Grade "A" Pasteurized Milk Ordinance (2003 Revision)
Standards For Grade "A" Pasteurized, Ultra-Pasteurized and
Aseptically Processed Milk and Milk Products
(Table of Contents)
Milk plants shall comply with all Items of this Section.
A receiving station shall comply with Items 1p to 15p, inclusive, and 17p, 20p and 22p,
except that the partitioning requirement of Item 5p shall not apply.
A transfer station shall comply with Items 1p, 4p, 6p, 7p, 8p, 9p, 10p, 11p, 12p, 14p,
15p, 17p, 20p and 22p and as climatic and operating conditions require the applicable
provisions of Items 2p and 3p.Provided, that in every case, overhead protection shall
be provided.
Facilities for the cleaning and sanitizing of milk tank trucks shall comply with Items
1p, 4p, 6p, 7p, 8p, 9p, 10p, 11p, 12p, 14p, 15p, 20p and 22p and as climatic and operating
conditions require, the applicable provisions of Items 2p and 3p. Provided, that in every
case, overhead protection shall be provided.
In the case of milk plants, receiving stations and transfer stations, which have HACCP
Systems regulated under Appendix K. of this Ordinance, the HACCP System shall
address the public health concerns described in this Section in a manner that provides
protection equivalent to the requirements in this Section.
Milk plants that have HACCP Systems, which are regulated under the NCIMS HACCP Program,
shall comply with all of the requirements of Item 16p. Pasteurization and Aseptic Processing
of this Ordinance, and pasteurization shall be managed as a CCP as described in
Appendix H. MILK AND MILK PRODUCT CONTINUOUS-FLOW (HTST AND HHST) PASTEURIZATION---CCP
MODEL HACCP PLAN SUMMARY; and MILK AND MILK PRODUCT VAT (BATCH) PASTEURIZATION---CCP
MODEL HACCP PLAN SUMMARY.
ITEM 1p. FLOORS - CONSTRUCTION
The floors of all rooms in which milk or milk products are handled, processed, packaged,
or stored; or in which milk containers, utensils and/or equipment are washed, shall
be constructed of concrete or other equally impervious and easily cleanable material;
and shall be smooth, properly sloped, provided with trapped drains and kept in good
repair. Provided, that cold-storage rooms used for storing milk and milk products need
not be provided with floor drains when the floors are sloped to drain to one (1) or more
exits. Provided further, that storage rooms for storing dry ingredients, packaged dry
ingredients, packaged dry milk or milk products, and/or packaging materials need not
be provided with drains and the floors may be constructed of tightly joined wood.
PUBLIC HEALTH REASON
Floors constructed of concrete or other similarly impervious material can be kept
clean more easily than floors constructed of wood or other pervious or easily disintegrating
material. They will not absorb organic matter and are; therefore, more apt to be kept clean
and free of odors. Properly sloped floors facilitate flushing and help to avoid undesirable
conditions. Trapping of drains prevents sewer gas from entering the milk plant.
ADMINISTRATIVE PROCEDURES
This Item is deemed to be satisfied when:
- The floors of all rooms in which milk or milk products are handled, processed, packaged,
or stored; or in which milk containers, utensils, and/or equipment are washed, are constructed
of good quality concrete, or equally impervious tile or brick laid closely with impervious joint
material, or metal surfacing with impervious joints, or other material which is the equivalent
of good quality concrete. The floors of storage rooms for dry ingredients and/or packaging
material may be constructed of tightly joined wood.
- The floor surface is smooth and sloped, so that there are no pools of standing water after
flushing, and the joints between the floor and the walls are impervious.
- The floors are provided with trapped drains. Cold-storage rooms used for storing milk and
milk products need not be provided with floor drains when the floors are sloped to drain to
one or more exits. Storage rooms for dry ingredients, dry packaged milk or milk products,
and/or packaging materials need not be provided with drains.
NOTE: Refer to Item 11p for requirements for floors of drying chambers.
ITEM 2p.WALLS AND CEILINGS - CONSTRUCTION
Walls and ceilings of rooms in which milk or milk products are handled, processed, packaged,
or stored; or in which milk containers, utensils and/or equipment are washed, shall have a
smooth, washable, light-colored surface and be in good repair.
PUBLIC HEALTH REASON
Properly finished walls and ceilings are more easily kept clean and are; therefore, more apt
to be kept clean. A light-colored finish aids in the even distribution of light and the
detection of unclean conditions.
ADMINISTRATIVE PROCEDURES
This Item is deemed to be satisfied when:
- Walls and ceilings are finished with smooth, washable, light-colored impervious materials.
- Walls, partitions, windows and ceilings are kept in good repair.
NOTE: Refer to Item 11p for requirements for walls for drying chambers.
Storage rooms used for the storage of packaged dry milk or milk products are exempt from
the ceiling requirements of this Item.
ITEM 3p. DOORS AND WINDOWS
Effective means shall be provided to prevent the access of insects and rodents. All openings
to the outside shall have solid doors or glazed windows, which shall be closed during dusty weather.
PUBLIC HEALTH REASON
Freedom from insects in the milk plant reduces the likelihood of contamination of the milk
or milk product. (Refer to Item 7r-Public Health Reason for information on disease transmission
by flies.)
ADMINISTRATIVE PROCEDURES
This item is deemed to be satisfied when:
- All openings to the outer air are effectively protected by:
- Screening; or
- Effective electric screen panels; or
- Fans or air curtains which provide sufficient air velocity so as to prevent the
entrance of insects; or
- Properly constructed flaps where it is impractical to use self-closing doors or
air curtains; or
- Any effective combination of a, b, c, or d or by any other method which prevents
the entrance of insects.
- All outer doors are tight and self-closing. Screen doors shall open outward.
- All outer openings are rodent-proofed to the extent necessary to prevent the entry
of rodents.
NOTE: The evidence of insects and/or rodents in the milk plant shall be
considered under Item 9p.
ITEM 4p.LIGHTING AND VENTILATION
All rooms in which milk or milk products are handled, processed, packaged, or stored;
or in which milk containers, utensils and/or equipment are washed shall be well lighted
and well ventilated.
PUBLIC HEALTH REASON
Ample light promotes cleanliness. Proper ventilation reduces odors and prevents
condensation upon interior surfaces.
ADMINISTRATIVE PROCEDURES
This Item is deemed to be satisfied when:
- Adequate light sources are provided (natural, artificial or a combination of both) which
furnish at least twenty (20) foot-candles (220 lux) of light in all working areas. This shall
apply to all rooms where milk or milk products are handled, processed, packaged, or stored;
or where containers, utensils and/or equipment are washed. Dry storage and cold storage rooms
shall be provided with at least five (5) foot-candles (55 lux) of light.
- Ventilation in all rooms is sufficient to keep them reasonably free of odors and excessive
condensation on equipment, walls and ceilings.
- Pressurized ventilating systems, if used, have a filtered air intake.
- For milk plants that condense and/or dry milk or milk products, ventilating systems in
packaging rooms, where used, are separate systems and where possible have the ducts installed
in a vertical position.
ITEM 5p. SEPARATE ROOMS
There shall be separate rooms for:
- The pasteurizing, processing, cooling, reconstitution, condensing, drying and packaging
of milk and milk products.
- Packaging of dry milk or milk products.
- The cleaning of milk cans and containers, bottles, cases and dry milk or milk product
containers.
- The fabrication of containers and closures for milk and milk products.
- Cleaning and sanitizing facilities for milk tank trucks in milk plants receiving milk
or whey in such tanks.
- Receiving cans of milk and milk products in milk plants receiving such cans.
Rooms in which milk or milk products are handled, processed, stored, condensed, dried and
packaged, or in which containers, utensils and/or equipment are washed or stored, shall not
open directly into any stable or any room used for domestic purposes. All rooms shall be of
sufficient size for their intended purposes.
Designated areas or rooms shall be provided for the receiving, handling and storage of
returned packaged milk and milk products.
PUBLIC HEALTH REASON
If the washing and sanitization of containers are conducted in the same room in which the
pasteurizing, processing, cooling, condensing, drying or packaging is done, there is
opportunity for the pasteurized product to become contaminated. For this reason, separate
rooms are required as indicated. The unloading of cans of raw milk directly into the pasteurizing
room is apt to increase the prevalence of insects therein, as well as to render it too public.
ADMINISTRATIVE PROCEDURES7
This Item is deemed to be satisfied when:
- Pasteurizing, processing, reconstitution, cooling, condensing, drying and packaging of
milk and milk products are conducted in a single room(s), but not in the same room(s) used
for the cleaning of milk cans, portable storage bins, bottles and cases, or the unloading
and/or cleaning and sanitizing of milk tank trucks, provided that these rooms may be separated
by solid partitioning doors that are kept closed. Provided further, that cooling, plate or
tubular, may be done in the room where milk tank trucks are unloaded and/or cleaned and sanitized.
Separation/clarification of raw milk may be done in an enclosed room where milk tank trucks
are unloaded and/or cleaned and sanitized.
NOTE: Packaging of dry milk or milk products shall be conducted in a separate room.
- All returned packaged milk and milk products, which have physically left the premises of
the processing milk plant, shall be received, handled and stored in separate areas or rooms
isolated from the Grade "A" dairy operations. Such separate areas or rooms shall be clearly
defined and marked for such use.
- All bulk milk and milk product storage tanks are vented into a room used for pasteurization,
processing, cooling or packaging operations or into a storage tank gallery room. Provided,
that vents located elsewhere, which are adequately equipped with air filters so as to preclude
the contamination of the milk or milk product shall be considered satisfactory.
- Facilities for the cleaning and sanitizing of milk tank trucks are properly equipped for
manual and/or mechanical operations. When such facilities are not provided on the milk plant
premises, these operations shall be performed at a receiving station, transfer station or separate
milk tank truck cleaning facility. Items relating to facilities for cleaning and sanitizing milk
tank trucks are listed at the beginning of this Section.
- Rooms in which milk or milk products are handled, processed or stored; or in which milk containers,
utensils and/or equipment are washed or stored, do not open directly into any stable or any room used
for domestic purposes.
- All rooms shall be of sufficient size for their intended purposes.
ITEM 6p. TOILET-SEWAGE DISPOSAL FACILITIES
Every milk plant shall be provided with toilet facilities conforming to the regulations of the ... of
...1 Toilet rooms shall not open directly into any room in which milk and/or milk products
are processed. Toilet rooms shall be completely enclosed and shall have tight-fitting, self-closing
doors. Dressing rooms, toilet rooms and fixtures shall be kept in a clean condition, in good repair and
shall be well ventilated and well lighted. Sewage and other liquid wastes shall be disposed of in a
sanitary manner.
PUBLIC HEALTH REASON
Human excreta are potentially dangerous and must be disposed of in a sanitary manner. The organisms
causing typhoid fever, para-typhoid fever and dysentery may be present in the body discharges of active
cases or carriers. Sanitary toilet facilities are necessary to protect the milk or milk product,
containers, utensils and equipment from fecal contamination, which may be carried by insects, hands
or clothing. When the toilet facilities are of a satisfactory type, are kept clean and are in good
repair, the opportunities for the spread of contamination by the above means are minimized. The
provision of an intervening room or vestibule between the toilet room and any room in which milk
or milk products are processed, condensed or dried makes it less likely that contaminated insects
will enter these rooms. It will also minimize the spread of odors.
The wastes resulting from the cleaning and rinsing of containers, utensils, equipment and floors,
from flush toilets, and from washing facilities, should be properly disposed of so as not to
contaminate the milk containers, utensils or equipment, or to create a nuisance or a public
health hazard.
ADMINISTRATIVE PROCEDURES
This Item is deemed to be satisfied when:
- The milk plant is provided with toilet facilities conforming to the regulations of
the ... of ...1
- Toilet rooms do not open directly into any room in which milk and/or milk products
are processed, condensed or dried.
- Toilet rooms are completely enclosed and have tight-fitting, self-closing doors.
- Dressing rooms, toilet rooms and fixtures are kept in a clean condition, in good repair
and are well ventilated and well lighted.
- Toilet tissue and easily cleanable covered waste receptacles are provided in toilet rooms.
- All plumbing is installed to meet the applicable provisions of the State or local plumbing code.
- Sewage and other liquid wastes are disposed of in a sanitary manner.
- Non-water-carried sewage disposal facilities are not used.
ITEM 7p.WATER SUPPLY
Water for milk plant purposes shall be from a supply properly located, protected and
operated and shall be easily accessible, adequate and of a safe, sanitary quality.
PUBLIC HEALTH REASON
The water supply should be accessible in order to encourage its use in cleaning
operations; it should be adequate so that cleaning and rinsing may be thorough;
and it should be of a safe, sanitary quality in order to avoid the contamination
of containers, utensils and equipment.
ADMINISTRATIVE PROCEDURES8
This Item is deemed to be satisfied when:
- Water for milk plant purposes is from an adequate supply, properly located,
protected and operated. It shall be easily accessible and of a safe, sanitary quality.
- The water supply is approved as safe by the State Water Control Authority and,
in the case of individual water systems, complies with the specification outlined
in Appendix D. and the Bacteriological Standards outlined in Appendix G.
- There is no cross-connection between the safe water supply and any unsafe or
questionable water supply, or any source of pollution through which the safe water
supply might become contaminated. A connection between the water supply piping and
a make-up tank, such as for cooling or condensing, unless protected by an air gap
or effective backflow preventer, constitutes a violation of this requirement. An
approved air gap is defined as the unobstructed vertical distance through the free
atmosphere of at least twice the diameter of the largest incoming water supply pipe
or faucet to the flood level of the vessel or receptacle. The distance of the air
gap is to be measured from the bottom of the potable inlet supply pipe or faucet
to the top of the effective overflow, i.e., flood level rim or internal overflow,
of the vessel. In no case, may the effective air gap be less than one (1) inch
(2.54 cm).
- Condensing water for milk or milk product evaporators, and water used to produce
vacuum and/or to condense vapors in vacuum heat processing equipment, is from a
source complying with Item 2 above. Provided, that when approved by the Regulatory
Agency, water from sources not complying with Item 2 above, may be used when the
evaporator or vacuum heat equipment is constructed and operated to preclude
contamination of such equipment, or its contents, by condensing water or by water
used to produce vacuum. Means of preventing such contamination are:
- Use of a surface type condenser in which the condensing water is physically
separated from the vapors and condensate; or
- Use of reliable safeguards to prevent the overflow of condensing water from
the condenser into the evaporator. Such safeguards include a barometric leg extending
at least thirty-five (35) feet vertically from the invert of the outgoing condensing
water line to the free level at which the leg discharges, or a safety shutoff valve,
located on the water feed line to the condenser, automatically actuated by a control
which will shut off the in-flowing water when the water level rises above a predetermined
point in the condenser. This valve may be actuated by water, air or electricity, and
shall be designed so that failure of the primary motivating power will automatically
stop the flow of water into the condenser.
- Condensing water for milk or milk product evaporators, complying with Item 2 above,
and water reclaimed from milk or milk products may be reused when all necessary means
of protection are afforded and it complies with the procedures outlined in Appendix D.,
Part V.
- New individual water supplies and water supply systems, which have been repaired or
otherwise become contaminated, are disinfected before being placed in use. (Refer to
Appendix D.) The supply shall be made free of the disinfectant by pumping to waste
before any sample for bacteriological testing shall be collected.
- Samples for bacteriological testing of individual water supplies are taken upon the
initial approval of the physical structure; each six (6) months thereafter; and when
any repair or alteration of the water supply system has been made. Samples shall be
taken by the Regulatory Agency and examinations shall be conducted in an official
laboratory. To determine if water samples have been taken at the frequency established
in this Section, the interval shall include the designated six (6) month period plus
the remaining days of the month in which the sample is due.
- Current records of water test results are retained on file with the Regulatory Agency
or as the Regulatory Agency directs.
- A potable water supply, which meets the criteria of this Section, may be connected to
the product feed line of a steam vacuum evaporator, provided that the water supply is
protected at the point of connection by an approved backflow prevention device.
ITEM 8p. HANDWASHING FACILITIES
Convenient handwashing facilities shall be provided, including hot and cold and/or
warm running water, soap and individual sanitary towels or other approved hand-drying
devices. Handwashing facilities shall be kept in a clean condition and in good repair.
PUBLIC HEALTH REASON
Proper use of handwashing facilities is essential to personal cleanliness and reduces
the likelihood of contamination of milk and milk products.
ADMINISTRATIVE PROCEDURES
This Item is deemed to be satisfied when:
- Convenient handwashing facilities are provided, including hot and cold and/or warm
running water, soap and individual sanitary towels or other approved hand-drying devices.
- Handwashing facilities are convenient to all toilets and to all rooms in which milk
plant operations are conducted.
- Handwashing facilities are kept in a clean condition and in good repair.
- Steam-water mixing valves and vats for washing bottles, cans and similar equipment
are not used as handwashing facilities.
ITEM 9p. MILK PLANT CLEANLINESS
All rooms in which milk and milk products are handled, processed or stored; or in which
containers, utensils and/or equipment are washed or stored, shall be kept clean, neat
and free of evidence of insects and rodents. Only equipment directly related to
processing operations or the handling of containers, utensils and equipment shall
be permitted in the pasteurizing, processing, cooling, condensing, drying, packaging,
and bulk milk or milk product storage rooms.
PUBLIC HEALTH REASON
Clean floors, free of litter, clean walls, ceilings and all other areas of the milk
plant are conducive to clean milk and milk product handling operations. Cleanliness
and freedom from insects and rodents reduces the likelihood of contamination of the
milk or milk product. Excess or unused equipment or equipment not directly related
to the milk plant operations can be detrimental to the cleanliness of the milk plant.
ADMINISTRATIVE PROCEDURES
This Item is deemed to be satisfied when:
- Only equipment directly related to processing operations or the handling of containers,
utensils and equipment is permitted in the pasteurizing, processing, cooling, condensing,
drying, packaging, and bulk milk or milk product storage rooms.
- All piping, floors, walls, ceilings, fans, shelves, tables and the non-product-contact
surfaces of other facilities and equipment are clean.
- No trash, solid waste or waste dry product is stored within the milk plant, except in
covered containers. Waste containers at the packaging machine or bottle washer may be
uncovered during the operation of such equipment.
- All rooms in which milk and milk products are handled, processed or stored; or in
which containers, utensils, and/or equipment are washed or stored, are kept clean, neat
and free of evidence of insects and rodents.
- Excessive product dust shall be kept under effective control by the use of exhaust
and collective systems designed for in-plant dust control. Tailings and materials collected
from exhaust collective systems shall not be used for human consumption.
ITEM 10p. SANITARY PIPING
All sanitary piping, fittings and connections which are exposed to milk and milk products
or from which liquids may drip, drain or be drawn into milk and milk products shall consist
of smooth, impervious, corrosion-resistant, non-toxic, easily cleanable material, which is
approved for milk product-contact surfaces. All piping shall be in good repair. Pasteurized
milk and milk products shall be conducted from one piece of equipment to another only through
sanitary piping.9
PUBLIC HEALTH REASON
Milk piping and fittings are sometimes so designed as to be difficult to clean, or they
may be constructed of metal, which corrodes easily. In either case, it is unlikely that
they will be kept clean. Sanitary milk piping is a term, which applies to properly designed
and properly constructed piping. The purpose of the third sentence is to prevent exposure of
the pasteurized milk or milk product to contamination.
ADMINISTRATIVE PROCEDURES
This Item is deemed to be satisfied when:
- All sanitary piping, fittings and connections, which are exposed to milk or milk products
or from which liquids may drip, drain or be drawn into milk or milk products, consist of smooth,
impervious, corrosion-resistant, non-toxic, easily cleanable material.
- All sanitary piping, connections and fittings consist of:
- Stainless steel of the AISI 300 series; or
- Equally corrosion-resistant metal which is non-toxic and nonabsorbent; or
- Heat resistant glass; or
- Plastic, or rubber and rubber-like materials which are relatively inert, resistant to
scratching, scoring, decomposition, crazing, chipping and distortion under normal use
conditions; are non-toxic, fat resistant, relatively nonabsorbent; which do not impart
flavor or odor to the milk or milk product; and which maintain their original properties
under repeated use conditions, may be used for gaskets, sealing applications and for short
flexible takedown jumpers or connections where flexibility is required for essential or
functional reasons.
- Sanitary piping, fittings and connections are designed to permit easy cleaning; kept
in good repair; free of breaks or corrosion; and contain no dead ends of piping in which
milk or milk product may collect.
- All interior surfaces of demountable piping, including valves, fittings and connections
are designed, constructed and installed to permit inspection and drainage.
- All mechanically cleaned milk pipelines and return-solution lines are rigid,
self-draining and so supported to maintain uniform slope and alignment. Return solution
lines shall be constructed of material meeting the specifications of Item 2 above.
If gaskets are used, they shall be self-positioning, of material meeting the specifications
outlined in Item 2 above and designed, finished and applied to form a smooth, flush interior
surface. If gaskets are not used, all fittings shall have self-positioning faces designed
to form a smooth, flush interior surface. All interior surfaces of welded joints in
pipelines shall be smooth and free from pits, cracks or inclusions.
In the case of welded lines, all welds shall be inspected as they are made and such welds
shall be approved by the Regulatory Agency.
Each cleaning circuit shall have access points for inspection in addition to the entrances
and exits. These may be valves, removable sections, fittings or other means or combinations
that are adequate for the inspection of the interior of the line. These access points shall
be located at sufficient intervals to determine the general condition of the interior surfaces
of the pipeline.
Detailed plans for welded pipeline systems shall be submitted to the Regulatory Agency for
written approval prior to installation. No alteration or addition shall be made to any
welded milk pipeline system without prior written approval from the Regulatory Agency.
- Pasteurized milk and milk products are conducted from one piece of equipment to another
only through sanitary milk piping.
- For milk plants that dry milk or milk products, because of the high pressure required to
obtain proper dispersal of the product in the drying chamber, the pipeline between the high
pressure pump and the dryer nozzle may be connected with pressure-tight threaded fittings,
or may be welded.
ITEM 11p. CONSTRUCTION AND REPAIR OF CONTAINERS AND EQUIPMENT
All multi-use containers and equipment that milk and milk products come into contact with
shall be of smooth, impervious, corrosion-resistant, non-toxic material; shall be constructed
for ease of cleaning; and shall be kept in good repair. All single-service containers,
closures, gaskets and other articles that milk and milk products come in contact with shall
be non-toxic and shall have been manufactured, packaged, transported and handled in a sanitary
manner. Articles intended for single-service use shall not be reused.
PUBLIC HEALTH REASON
When equipment is not constructed and located so that it can be cleaned easily, and is not
kept in good repair, it is unlikely that it will be properly cleaned.
Single-service articles, which have not been manufactured and handled in a sanitary manner,
may contaminate the milk or milk product.
ADMINISTRATIVE PROCEDURES
This Item is deemed to be satisfied when:
- All multi-use containers and equipment that milk and milk products come into contact
with are of smooth, impervious, corrosion-resistant and non-toxic material.
- All milk and milk product-contact surfaces of multi-use containers and equipment consist of:
- Stainless steel of the AISI 300 series; or
- Equally corrosion-resistant metal which is non-toxic and nonabsorbent; or
- Heat resistant glass; or
- Plastic or rubber and rubber-like materials which are relatively inert, resistant to
scratching, scoring, decomposition, crazing, chipping and distortion under normal use
conditions; which are non-toxic, fat resistant, relatively nonabsorbent and do not impart
flavor or odor to the milk or milk product; and which maintain their original properties
under repeated use conditions.
- All joints in containers, utensils and equipment are flush and finished as smooth as
adjoining surfaces, or if the surface is vitreous, it must be continuous. Tile floors are
not acceptable in dryers. Joints on equipment coming in contact with dry milk or milk
products only or used for hot air piping may be sealed by other acceptable means. Where a
rotating shaft is inserted through a surface with which milk or milk products come into
contact, the joint between the moving and stationary surfaces shall be close-fitting.
Grease and oil from gears, bearings, and cables shall be kept out of the milk and milk
products. Where a thermometer or temperature-sensing element is inserted through a
surface, with which milk or milk products come into contact, a pressure-tight seal
shall be provided ahead of all threads and crevices.
- All openings in covers of tanks, vats, separators, etc. are protected by raised
edges, or otherwise, to prevent the entrance of surface drainage. Condensation-diverting
aprons shall be provided as close to the tank or vat as possible on all pipes, thermometers,
or temperature sensing elements and other equipment extending into a tank, bowl, vat or
similar equipment, unless a watertight joint is provided.
- All surfaces with which milk or milk products come into contact, except pneumatic ducts
and cyclonic or air separator collectors, are easily accessible or demountable for manual
cleaning or are designed for mechanical cleaning. Provided, that flexible plastic or rubber
tanker loading and unloading hoses with screw-type hose clamps shall be considered in
compliance, if an appropriate screwdriver or tool is readily available for disassembly.
All product-contact surfaces shall be readily accessible for inspection and shall be
self-draining.
- There are no threads used in contact with milk or milk products except where needed for
functional and safety reasons, such as in clarifiers, pumps and separators. Such threads
shall be of a sanitary type, except those used on high-pressure lines between the high
pressure pump and the dryer nozzle.
- All multi-use containers and other equipment have rounded corners; are in good repair;
and free from breaks, crevices and corrosion. Milk cans shall have umbrella-type covers.
- Strainers, if used, are of perforated metal design and so constructed as to utilize
single-service strainer media. Multiple-use, woven material shall not be used for straining
milk. Provided, that when required for functional reasons inherent to the production of
certain milk products, such as buttermilk, whey, dry whey, and dry milk products, woven
material may be used where it is impractical to use perforated metal. However, woven
material parts shall be mechanically cleaned by such methods that thoroughly clean the
woven material and do not contaminate the product.
- Sifters for dry milk products are so constructed as to utilize single-service or
multi-service use strainer media conforming with:
- Plastic materials listed in 2.d. above; or
- Woven stainless steel wire conforming to 2.a. above; or
- Cotton, linen, silk, or synthetic fibers which are non-toxic, relatively insoluble,
easily cleanable and do not impart a flavor to the product.
Tailings shall be continuously discharged from sifters through dust-tight connections
to an enclosed container and shall not be used for human consumption.
- All single-service containers, closures, gaskets and other articles that milk or
milk products come in contact with are non-toxic.
- The manufacture, packing, transportation and handling of single-service containers,
closures, caps, gaskets and similar articles comply with the requirements of Appendix J.
Standards for the Fabrication of Single-Service Containers and Closures for Milk and Milk
Products. Provided, that all paper, plastics, foil, adhesives, and other components of
containers used in the packaging of milk or milk products that have been condensed and/or
dried shall be free from deleterious substances and comply with the requirements of the
FFD&C Act.
Inspections and tests shall be made by the Regulatory Agency or any Agency authorized by them.
NOTE: 3-A Sanitary Standards for dairy equipment are promulgated jointly by
the Sanitary Standards Subcommittee of the Dairy Industry Committee, the Committee on
Sanitary Procedure of the International Association for Food Protection and the Milk
Safety Branch, Center for Food Safety and Applied Nutrition, Food and Drug Administration,
Public Health Service, Department of Health and Human Services. Equipment manufactured in
conformity with 3-A Sanitary Standards complies with the sanitary design and construction
standards of this Ordinance.
ITEM 12p. CLEANING AND SANITIZING OF CONTAINERS AND EQUIPMENT
The product-contact surfaces of all multi-use containers, utensils and equipment used in the
transportation, processing, condensing, drying, packaging, handling, and storage of milk or
milk products shall be effectively cleaned and shall be sanitized before each use.
Provided, that cloth-collector systems used on dryers shall be cleaned and sanitized or purged
at intervals and by methods recommended by the manufacturer and approved by the Regulatory Agency.
Provided further, that piping, equipment and containers used to process, conduct or package
aseptically processed milk and milk products, beyond the final heat treatment process, shall be
sterilized before any aseptically processed milk or milk product is packaged and shall be re-sterilized
whenever any nonsterile product has contaminated it.
PUBLIC HEALTH REASON
Milk and milk products cannot be kept clean and safe, if permitted to come into contact with
containers, utensils and equipment that have not been properly cleaned and sanitized.
ADMINISTRATIVE PROCEDURES
This Item is deemed to be satisfied when:
- All multi-use containers and utensils are thoroughly cleaned after each use and all equipment
is thoroughly cleaned at least once each day used, unless the Regulatory Agency has reviewed and
accepted information, in consultation with FDA, supporting the cleaning of multi-use containers
and utensils at frequencies extending beyond one (1) day or seventy-two (72) hours in the case
of storage tanks, or 44 hours in the case of evaporators, which are continuously operated.
Supporting information shall be submitted to and approved by the Regulatory Agency prior to
initiating the qualification period if required. Finished product produced during an extended
run must meet all applicable requirements of Section 7 of this Ordinance. Any significant
equipment or processing changes shall be communicated to the Regulatory Agency.
The supporting information may include but is not limited to:
- Statement of proposal, including desired cleaning frequency.
- Product and equipment description.
- Intended use and consumers.
- Distribution and storage temperatures of product.
- Diagram of process of interest.
- Process parameters, including temperature and times.
- Hazard evaluation and safety assessment.
- Review of equipment for sanitary design.
- When indicated by a hazard evaluation and safety assessment, a plan for initial qualification
shall be developed to address identified critical process parameters.
Otherwise, storage tanks shall be cleaned when emptied and shall be emptied at least every seventy-two
(72) hours. Records must be available to verify that milk storage in these tanks does not exceed
seventy-two (72) hours. These records shall be available for at least the previous three (3) months
or from the time of the last regulatory inspection, whichever is longer. In the case of pasteurized
storage tanks, which are mechanically cleaned at intervals of less than seventy-two (72) hours, the
mechanical cleaning records required under Item 2.b. of this Section shall be considered adequate.
Storage tanks, which are used to store raw milk or milk products or heat-treated milk products longer
than twenty-four (24) hours and silo tanks used for the storage of raw milk or milk products or
heat-treated milk products shall be equipped with a seven (7) day temperature recording device complying
with the specifications of Appendix H. Otherwise provided, evaporators shall be cleaned at the end of a
continuous operation, not to exceed forty-four (44) hours, and records must be available to verify that
the operation time does not exceed forty-four (44) hours.
Drying equipment, cloth-collector systems, packaging equipment and multi-use dry milk products and dry
whey storage containers are cleaned at intervals and by methods recommended by the manufacturer and
approved by the Regulatory Agency. Such methods may include cleaning without water by use of vacuum
cleaners, brushes, or scrapers. After cleaning, such equipment is sanitized by a method approved by
the Regulatory Agency. Cloth collector systems and all dry product-contact surfaces downstream from
the dryer shall be sanitized or purged at intervals and by methods recommended by the manufacturer
and approved by the Regulatory Agency. Storage bins used to transport dry milk or milk products shall
be dry cleaned after each usage and washed and sanitized at regular intervals.
NOTE: Appendix F. contains additional information on dry cleaning of drying equipment,
packaging equipment, and dry milk product and dry whey storage containers.
All milk tank trucks that transport Grade "A" milk and milk products, shall be washed and sanitized
at a permitted milk plant, receiving station, transfer station, or milk tank truck cleaning facility.
Whenever a milk tank truck has been cleaned and sanitized, as required by the Regulatory Agency, it
shall bear a tag or a record shall be made showing the date, time, place and signature or initials
of the employee or contract operator doing the work, unless the milk tank truck delivers to only one
receiving facility where responsibility for cleaning and sanitizing can be definitely established
without tagging. The tag shall be removed at the location where the milk tank truck is next washed
and sanitized and kept on file for fifteen (15) days as directed by the Regulatory Agency.
- Pipelines and/or equipment designed for mechanical cleaning meet the following requirements:
- An effective cleaning and sanitizing regimen for each separate cleaning circuit shall be followed.
- A temperature recording device, complying with the specifications in Appendix H., or a recording
device which provides sufficient information to adequately evaluate the cleaning and sanitizing
regimen and which is approved by the Regulatory Agency, shall be installed in the return solution
line or other appropriate area to record the temperature and time which the line or equipment is
exposed to cleaning and sanitizing solutions. For purposes of this Section, recording devices
which produce records not meeting the specifications of Appendix H. may be acceptable if:
- (1) The device provides a continuous record of the monitoring of the cleaning cycle time and
temperature, cleaning solution velocity or cleaning pump operation and the presence or strength
of cleaning chemicals for each cleaning cycle.
- (2) The record shows a typical pattern of each circuit cleaned, so that changes in the cleaning
regimen may be readily detected.
- (3) Electronic storage of required cleaning records, with or without hard copy printouts, may be
acceptable, provided, the electronically generated records are readily available. Electronic
records must meet the criteria of this Section and those provisions of Appendix H., which are
determined to be applicable by the Regulatory Agency and FDA. Except that, electronic storage
of required cleaning records, with or without hard copy, shall be acceptable, provided the
computer and computer generated records are readily available and meet the criteria of this
Section and the 21 CFR Part 11.
- Cleaning charts and electronically stored records required by this Section shall be
identified, dated and retained for three (3) months or until the next regulatory inspection,
whichever is longer.
- During each official inspection, the Regulatory Agency shall examine charts and records
to verify the cleaning regimens.
- Milk plants in which containers are washed manually are equipped with a two (2)-compartment
wash-and-rinse vat for this purpose. Such milk plants shall also provide a steam cabinet or
individual steam-jet plate with hood for sanitizing of cleaned containers, or if sanitizing is
done with chemicals, a third treatment vat.
- In milk plants utilizing automatic bottle washers, such washers must provide for bactericidal
treatment by means of steam, hot water or chemical treatment. In soaker-type bottle washers,
in which bactericidal treatment depends upon the causticity of the washing solution, the caustic
strength for a given soaking time and temperature shall be as specified in the following table,
which lists the combinations of causticity, time and temperature, of equal bactericidal value,
for the soaker tank of soaker-type bottle washers:
Table 2. Combinations of Causticity, Time and Temperature, of Equal Bactericidal Value,
for the Soaker Tank of Soaker-Type Bottle Washers
(Based on NSDA Specifications for beverage bottles)
Time in Minutes |
Temperature, Degrees C (F) |
77 (170) |
71 (160) |
66 (150) |
60 (140) |
54 (130) |
49 (120) |
43 (110) |
Concentration of NaOH (percent) |
3 min. | 0.57 | 0.86 | 1.28 | 1.91 | 2.86 | 4.27 |
6.39 |
5 min. | 0.43 | 0.64 | 0.96 | 1.43 | 2.16 | 3.22 |
4.80 |
7 min. | 0.36 | 0.53 | 0.80 | 1.19 | 1.78 | 2.66 |
3.98 |
NOTE: The National Soft Drink Association (NSDA), Washington, D.C.
20036 alkali test, the NSDA caustic test, or other suitable test may be used to determine
the strength of the soaker solution. The caustic strength shall be tested monthly by the
Regulatory Agency. |
When caustic is so used, subsequent final rinsing of the bottles shall be with water,
which has been treated with heat or chemicals to assure freedom from viable pathogenic or
otherwise harmful organisms, to prevent recontamination of the treated bottle during the
rinsing operation.
- All multi-use containers, utensils and equipment are sanitized before use, employing one
or a combination of the methods prescribed under Item 11r. Additionally, for milk plants that
condense or dry milk or milk products the following methods are acceptable, or any other method,
which has been demonstrated to be equally efficient:
- Exposure to an enclosed jet of steam for not less than 1 minute.
- Exposure to hot air at a temperature of at least 83°C (180°F) for at
least twenty (20) minutes as measured by an acceptable indicating thermometer located in the
coldest zone.
Assembled equipment must be sanitized prior to each day's run, unless FDA and the Regulatory
Agency have reviewed and accepted information supporting the sanitizing of multi-use containers,
utensils and equipment at frequencies extending beyond one (1) day. Tests to determine the
efficiency of sanitization should be made by the Regulatory Agency at intervals sufficient to
satisfy the Regulatory Agency that the sanitization process is effective. Provided, that all
piping, equipment and containers used to conduct, process or package aseptically processed
milk and milk products, beyond the final heat treatment process, shall be sterilized by heat,
chemical sterilant(s) or other appropriate treatment before use and resterilized whenever it
has been contaminated by nonsterile product.
For milk plants that dry milk or milk products, higher temperatures and longer periods may be
necessary for the sanitization of high-pressure lines. It has been demonstrated that alkaline
cleaners at 72°C (160°F) for thirty (30) minutes, followed by an acid cleaner for thirty (30)
minutes at the same temperature, produce satisfactory results. Studies have indicated that
effective sanitization of the dryer may be accomplished by the following procedure:
- Operate the spray nozzles with water at a temperature and rates at least as high as those
employed during the drying operation.
- Adjust airflow to give at least 0.5 inch (water) pressure in the drying chamber.
- Continue the operation for twenty (20) minutes while a temperature of not less than 85°C
(185°F) is being registered at the discharge from the dryer.
Portions of the drying system not reached by this treatment or dryers in which this procedure
is not practical shall be treated by one of the methods prescribed above, or by other methods
of demonstrated effectiveness.
- The residual bacteria count of multi-use containers and closures shall be conducted as
outlined in Appendix J. The residual bacteria count of multi-use containers, used for packaging
pasteurized milk and milk products, shall not exceed one (1) colony per milliliter (1/mL) of
capacity, when the rinse test is used, or fifty (50) colonies per fifty (50) square centimeters
(one (1) colony per square centimeter) of product-contact surface, when the swab test is used,
in three (3) out of four (4) samples taken at random on a given day. Coliform organisms shall be
undetectable in all multi-use containers.
- The residual bacteria count of single-service containers and closures, used for packaging
pasteurized milk and milk products, shall not exceed fifty (50) colonies per container, or in
the case of dry product packaging, shall not exceed one (1) colony per milliliter (1/mL) of
capacity when the rinse test is used, except that in containers less than 100 mL the count
shall not exceed ten (10) colonies or fifty (50) colonies per eight (8) square inches (one (1)
colony per square centimeter) of product-contact surface, when the swab test is used, in three
(3) out of four (4) samples taken at random on a given day. Coliform organisms shall be
undetectable in all single-service containers.
- When single-service containers or closures are fabricated in another plant that conforms
to the Standards of Appendix J. and the Regulatory Agency has information that they do comply,
the Regulatory Agency may accept the containers as being in conformance without additional
testing. If there is reason to believe that containers do not conform to the bacteriological
standards, additional testing may be required. If containers are fabricated in the milk plant,
the Regulatory Agency shall collect, during any consecutive six (6) months, at least four (4)
sample sets of containers, as defined in Appendix J., from each manufacturing line, as defined
in Appendix J., in at least four (4) separate months, except when three (3) months show a
month containing two (2) sampling dates separated by at least twenty (20) days, and analyze
the sample sets at an Official, Commercial or Industry Laboratory, approved by the State Milk
Laboratory Certifying Agency specifically for the examinations required under Appendix J.
- Milk plants that utilize multi-use plastic containers, for pasteurized milk and milk products,
shall comply with the following criteria:
- All containers shall be identified as to plant of manufacture, date of manufacture and type
and class of plastic material used. This information may be by code. Provided, that the code
is revealed to the Regulatory Agency.
- A device shall be installed in the filling line capable of detecting, in each container
before it is filled, volatile organic contaminants in amounts that are of public health
significance. Such device must be constructed so that it may be sealed by the Regulatory
Agency to prevent the changing of its sensitivity functioning level. Models using an air
injection system and with a testing device built into the detection equipment do not have
to be sealed. To assure proper functioning of the system the operator needs to be able to
adjust the sensitivity. However, those models utilizing an external testing device must be
sealed. Any container detected by the device, as being unsatisfactory must be automatically
made unusable to prevent refilling. In addition, the device must be interconnected so that
the system will not operate unless the detecting device is in proper operating condition.
Provided, that any other system so designed and operated that will provide equal assurance
of freedom from contamination and recognized by FDA to be equally efficient may be accepted
by the Regulatory Agency.
When other systems are used in place of a device for the detection of volatile organic
contaminants, the following criteria has been developed to determine what constitutes
equal assurance:
- (1) A soaker-type washer shall be used for cleaning and sanitizing the containers and shall
conform with the following criteria:
- i) If caustic is used, the caustic strength for a given washing time and temperature shall
be as specified in Table 2 of this Item; or
- ii) If a cleaning compound, other than caustic is used, the compound shall be a mild or
moderately alkaline, granular composition formulated from a blend of sodium phosphate and
anionic synthetic detergents and conform to the following:
- A) The used solution shall have at least a three percent (3%) concentration with a pH of
at least 11.9 and an alkalinity expressed as sodium oxide of at least 2.5 percent;
- B) There shall be at least a two (2) minute soak time in the soaker tank;
- C) The temperature of the soaker tank shall be at least 69°C (155°F); and
- D) The final rinse subsequent to the soaking tank shall be with a sanitizing solution.
- iii) The soaker-type washer system shall be so designed and operated that unless the time,
temperature and concentration, as specified for the soaker solutions, are met, the containers
cannot be discharged from the washer. The mechanism for control of the time, temperature and
concentration of the use solution shall be sealed.
- (2) A thorough inspection procedure shall be in effect to remove any containers, which show
stress cracks, splitting, pitting, discoloration, or cloudiness, as well as any unremoved
soil. This must be carried out with adequate light and be much more thorough than the
customary cursory inspection given to glass bottles.
- A standard must be available for use by the Regulatory Agency for testing the proper
sensitivity functioning levels of the detection device.
- The containers shall comply with the applicable construction requirements of Item 11p
of this Ordinance. The closure for the container shall be single-service.
Screw-type closures shall not be used.
- The container shall not impart, into the product, pesticide residual levels or other
chemical contaminants in excess of those considered acceptable under the FFD&CA and
regulations issued there under.
- The phrase "Use only for food" shall appear on all containers.
ITEM 13p. STORAGE OF CLEANED CONTAINERS AND EQUIPMENT
After cleaning, all multi-use milk or milk product containers, utensils and equipment shall be
transported and stored to assure complete drainage and shall be protected from contamination before use.
PUBLIC HEALTH REASON
If containers and equipment are not protected from contamination, the value of sanitization may be
partly or entirely nullified.
ADMINISTRATIVE PROCEDURES
This Item is deemed to be satisfied when:
All multi-use containers, utensils and equipment, after cleaning, are transported and/or stored
on racks made of impervious food grade materials, or in clean cases elevated above the floor.
Containers shall be stored inverted, if practicable, on racks or in cases constructed of relatively
nonabsorbent, impervious, food-grade, corrosion-resistant, non-toxic materials, or otherwise
protected from contamination.
ITEM 14p. STORAGE OF SINGLE-SERVICE CONTAINERS, UTENSILS AND MATERIALS
Single-service caps, cap stock, parchment paper, containers, gaskets, liners, bags and other
single-service articles for use in contact with milk and milk products shall be purchased and
stored in sanitary tubes, wrappings or cartons; shall be kept therein in a clean, dry place until
used; and shall be handled in a sanitary manner.
PUBLIC HEALTH REASON
Soiled or contaminated caps, parchment paper, gaskets and single-service containers nullify the
benefits of the safeguards prescribed throughout this Ordinance. Packing the caps in tubes,
which remain unbroken until they are placed in the bottling machine, is the best method of assuring
cap cleanliness.
ADMINISTRATIVE PROCEDURES
This Item is deemed to be satisfied when:
- Single-service caps, cap stock, parchment paper, containers, gaskets, liners, bags and other
single-service articles for use in contact with milk and milk products are purchased and stored
in sanitary tubes, wrappings or cartons; are kept in a clean, dry place until used; and are handled
in a sanitary manner.
- Paperboard shipping containers used to enclose plastic bags or unfilled containers are used only
once, unless other methods are employed to protect the containers from contamination.
- Tubes or cartons are not refilled with spilled caps, gaskets or parchment papers.
- Cartons or boxes from which contents have been partially removed are kept closed.
- Suitable cabinets are provided for storage of tubes after removal from the large outer box,
and for storage of opened cartons, unless other satisfactory means are employed to protect the caps,
closures or containers.
ITEM 15p. PROTECTION FROM CONTAMINATION
Milk plant operations, equipment and facilities shall be located and conducted to prevent any contamination
of milk or milk products, ingredients, containers, utensils and equipment. All milk or milk products or
ingredients that have been spilled, overflowed or leaked shall be discarded. The processing or handling
of products other than Grade "A" milk or milk products in the milk plant shall be performed to preclude
the contamination of such Grade "A" milk and milk products. The storage, handling and use of poisonous
or toxic materials shall be performed to preclude the contamination of milk and milk products, or
ingredients of such milk and milk products, or the product-contact surfaces of all containers, utensils
and equipment.
PUBLIC HEALTH REASON
Because of the nature of milk and milk products and their susceptibility to contamination by bacteria,
chemicals and other adulterants, every effort should be made to provide adequate protection for the
milk and milk products at all times. Misuse of pesticides and other harmful chemicals can provide
opportunities for contamination of the milk and milk product or equipment with which the milk or
milk product comes in contact.
ADMINISTRATIVE PROCEDURES
This Item is deemed to be satisfied when:
15p. (A)
- Equipment and operations are so located within the milk plant as to prevent overcrowding and
contamination of cleaned and sanitized containers, utensils and equipment by splash, condensation
or manual contact.
- Packaged milk and milk products, which have physically left the premises or the processing milk
plant are not re-pasteurized for Grade "A" use. The Regulatory Agency may, on a specific individual
request, authorize reprocessing of packaged milk and milk products, provided all other aspects of
this Item, including proper storage temperature and container integrity are complied with. Provided,
that the re-pasteurization of milk and milk products shipped in milk tank trucks, which have been
pasteurized at another Grade "A" milk plant and have been handled in a sanitary manner and maintained
at 7°C (45°F) or less is permitted. Equipment, designated areas or rooms utilized for handling,
processing and storage of returned packaged milk or milk products are maintained, operated, cleaned
and sanitized so as to preclude the contamination of Grade "A" products and equipment and the Grade
"A" operations.
- All product-contact surfaces of containers, utensils and equipment are covered or otherwise
protected to prevent the access of insects, dust, condensation and other contamination. All openings,
including valves and piping attached to milk and milk product storage tanks and milk tank trucks, pumps,
vats, etc., shall be capped or otherwise properly protected. While unloading at a milk plant, receiving
station or transfer station, one of the following conditions shall be met:
- If the area is completely enclosed, walls and ceiling, with doors closed during the unloading process
and the dust-cover or dome and the manhole cover is opened slightly and held in this position by the
metal clamps used to close the cover, then a filter is not required. However, if the dust cover and/or
manhole cover(s) are opened in excess of that provided by the metal clamps or the covers have been
removed, then a suitable filter is required for the manhole.
- If the area is not completely enclosed or doors of the unloading area are open during unloading,
a suitable filter is required for the manhole or air inlet vent and suitable protection must be
provided over the filter material either by design of the filter holding apparatus or a roof or
ceiling over the area. When weather and environmental conditions permit, manhole openings and covers
of milk tank trucks may be opened outdoors for the short period of time necessary for the collection
of samples for animal drug residue screening. Direct connections from milk tank truck to milk tank
truck must be made from valve-to-valve or through the manhole lid. Provided, that all connections
are made ferrule-to-ferrule and adequate protection is provided for the air vent.
Receiving and dump vats shall be completely covered, except during washing and sanitizing, and when
milk is being dumped. Where strainers are used, the cover for the vat opening shall be designed to
cover the opening with the strainer in place.
- Ingredients added to milk and milk products are handled in such a manner as to avoid contamination.
- Whenever air under pressure is used for the agitation or movement of milk or milk products, or is
directed at a milk or milk product-contact surface, it is free of oil, dust, rust, excessive moisture,
extraneous materials and odor, and shall otherwise comply with the applicable standards of Appendix H.
Air intakes for drying equipment shall be located so as to minimize the amount of atmospheric contamination
and shall be equipped with suitable single-service filters, multi-use filters, or continuous air
filter systems. (Refer to Appendix H.) The use of steam containing toxic substances is expressly
prohibited. Whenever steam is used in contact with milk or milk products it shall be of culinary
quality and shall comply with the applicable standards of Appendix H.
- Air exhausts from dryer systems are covered when dryers are not in operation.
- Standardization of Grade "A" milk and milk products with other than Grade "A" milk and milk
products is prohibited. This Ordinance permits standardization as a process of adjusting
the milk fat of milk in a milk plant by the addition or removal of cream or non-fat (skim) milk.
- All multi-use cases used to encase packaged milk and milk product containers are cleaned prior
to their use.
- All ingredients and non-product-contact materials used in the preparation or packaging of milk
and milk products are stored in a clean place and are so handled as to prevent their contamination.
- Pasteurized milk and milk products are not strained or filtered, except through a perforated
metal strainer.
- Only those poisonous or toxic materials, including but not limited to insecticide, rodenticides,
detergents, sanitizers, caustics, acids, related cleaning compounds and medicinal agents necessary
for the maintenance of the milk plant are present in the milk plant.
- Those poisonous or toxic materials that are necessary are not stored in any room where milk or
milk products are received, processed, pasteurized, condensed, dried or stored; or where containers,
utensils or equipment are washed; or where single-service containers, closures, bags, or caps are stored.
- Those poisonous or toxic materials that are necessary are stored in a separate area of the milk
plant in prominently and distinctly labeled containers. Provided that, this does not preclude the
convenient availability of detergents or sanitizers to areas where containers, utensils and equipment
are washed and sanitized.
- Only insecticides and rodenticides approved by the Regulatory Agency and/or registered with the
EPA shall be used for insect and rodent control. Such insecticides and rodenticides shall be used
only in accordance with the manufacturer's label directions and shall be prevented from contaminating
milk and milk products, containers, utensils and equipment.
- In the case of separating non-Grade "A" and Grade "A" milk or milk products, a water rinse after
processing non-Grade "A" and prior to Grade "A" is adequate separation, provided both are processed as
Grade "A", and raw and pasteurized milk or milk products are kept physically separated.
- Grade "A" raw milk or milk products and non-Grade "A" raw products, dairy or non-dairy, shall be
separated by one (1) valve.
- Grade "A" pasteurized milk or milk products and non-Grade "A" pasteurized products, dairy or
non-dairy, shall be separated by one (1) valve.
- Provided, that during the actual flushing of raw milk or milk product lines and vessels with
water, there shall be a sufficient separation between water piping and unpasteurized milk or
milk products, or lines used to conduct unpasteurized milk or milk products, to prevent the
accidental addition of water.
- When two (2) grades of milk or milk products are received in the same milk plant in dual
receiving equipment, a swing type dump grill is not permitted. When two (2) grades of milk or
milk products are received in the milk plant by milk tank trucks, separate receiving equipment
and unloading pumps shall be provided.
15p.(B)
- During processing, pipelines and equipment used to contain or conduct milk and milk products
shall be effectively separated from tanks or circuits containing cleaning and/or sanitizing
solutions. This can be accomplished by:
- Physically disconnecting all connection points between tanks or circuits containing cleaning
and/or sanitizing solutions from pipelines and equipment used to contain or conduct milk or milk
products; or
- Separation of all connection points between such circuits by at least two (2) automatically
controlled valves with a drainable opening to the atmosphere between the valves; or by a
single-bodied double seat valve, with a drainable opening to the atmosphere between the seats, if:
- (1) The opening to the atmosphere (vent) is equal to the largest pipeline feeding the valve(s).
- (2) Both valves, and valve seats in the case of single-bodied double seat valves, are position
detectable and capable of providing an electronic signal when not properly seated in the blocked
position.
- (3) These valves, or valve seats in the case of single-bodied double seat valves, are part of an
automatic fail-safe system that will prevent contamination of product with cleaning or sanitizing
solutions. Automatic fail-safe systems will be unique to each particular installation but are
normally based on the premise that both blocking valve seats are properly seated in the blocked
position before the mechanical cleaning system can be activated for the cleaning circuit containing
this valve arrangement.
- (4) The system does not have any manual overrides.
- (5) Controls for the fail-safe system are secured as directed by the Regulatory Agency in order to
prevent unauthorized changes.
- (6) The vent is not cleaned until milk and milk products have been removed or isolated.
- (7) Variations from the above specifications may be individually evaluated and found to also be
acceptable if the level of protection is not compromised.
For Example: In low pressure, gravity drain applications where the product line is the
same size or larger than the cleaning or sanitizing solution line, the vent may be the size of
the solution line and the valves or valve seats need not be position detectable. If a common
drain line is used to connect vent lines from more than one (1) block-and-bleed vent, such as
in the case of drain lines from a series of cheese vats with a common drain for the block-and-bleed
vent lines, the cross sectional area of the common drain line must be at least equal to the total
cross sectional area of the lines connected to the header. Or, a common drain line of the same
size as the vent may be used, if provisions are included in a fail-safe control system to
sequence the use and cleaning of the vats to assure that no more than one (1) vat attached
to that drain can be washed at the same time. All other criteria still apply. In order to
accept this variation, the valve(s) must fail to the blocked position upon loss of air or
power, and there must be no pumps capable of pushing milk or milk product, cleaning solutions,
or sanitizing solutions into this valve arrangement.
- In the case of aseptically processed and higher-heat-shorter-time (HHST) pasteurized milk
and milk products that are processed and the equipment cleaned and/or chemically sanitized
above the atmospheric boiling point of the milk or milk product or cleaning and/or sanitizing
solutions, the required separation between pipe lines and equipment, used to contain or conduct
milk and milk products, and tanks or circuits containing cleaning and/or chemical sanitizing
solutions, may be accomplished using an alarmed steam block(s), located between the milk and
milk product and cleaning and/or chemical sanitizing solutions if:
- (1) The steam block is equipped with a visible steam trace that exits at the bottom of the
steam block;
- (2) The steam trace is equipped with a temperature sensor that is capable of differentiating
between those temperatures that indicate steam exiting the steam trace has not been exposed
to liquid in the steam block and temperatures that will occur when liquid is present in the
steam block;
- (3) This steam trace shall be physically isolated from other steam lines or traces such that
the temperature sensor measures the steam temperature only from that single trace;
- (4) The temperature sensor is integrated with automatic controls, such that when there is
milk or milk products on one (1) side of the steam block and cleaning and/or chemical
sanitizing solutions on the other side of the steam block, and the temperature sensor in
the steam trace detects a temperature that indicates that liquid, rather than steam, is
present in the steam trace, the cleaning pump will be de-energized, and when needed to prevent
solution pressure on the steam block, the cleaning and/or chemical sanitizing solution are
automatically drained away from the steam block. Except that:
- i) In systems where the cleaning and/or sanitizing solution is circulated by the timing pump,
that pump may continue to operate during an alarmed condition, provided a legal flow-diversion
device (FDD) is used to divert the cleaning and/or chemical sanitizing solution flow away from
the steam block.
- ii) In aseptic processing systems that are not equipped with a legal FDD and where the cleaning
and/or sanitizing solution is circulated by the timing pump of the aseptic processing system,
that pump may continue to operate during an alarmed condition, provided there are at least two
(2) instrumented steam blocks between the milk and milk product and the cleaning and/or chemical
sanitizing solutions and at least one (1) of the blocks remains uncompromised.
- (5) During times when a steam block(s) is used as described in this Section to provide separation
between pipe lines and equipment, used to contain or conduct milk and milk products, and tanks or
circuits containing cleaning and/or chemical sanitizing solutions, there shall be no time delays
or other means that delay an immediate automatic response to liquid exiting the steam trace; and
- (6) Although the automatic control system is not required to comply with Appendix H. V., Criteria
for the Evaluation of Computerized Systems for Grade "A" Public Health Controls, there shall be
means provided to test and verify the accuracy of the sensor and the operation of the control system.
In order to facilitate testing, the temperature set point that will activate the automatic controls,
described in this Section, will be identified for each steam block used for this purpose. Means
shall be provided to verify that lowering the temperature below this set point will activate the
control system when a steam block(s) is used, as described in this Section, to provide separation
between pipe lines and equipment, used to contain or conduct milk and milk products, and tanks or
circuits containing cleaning and/or chemical sanitizing solutions.
NOTE: The valve arrangement(s) described in this Section shall not be used to separate
raw products, dairy, non-dairy or water, from pasteurized milk or milk products. Provided that,
nothing in this Section shall be construed as barring any other means to separate milk and milk
product from cleaning/sanitizing solution in HHST and Aseptic Processing Systems, which have been
recognized by FDA and in the case of aseptic processing equipment, by the Processing Authority, to
be equally effective and which are approved by the Regulatory Agency.
- Except as permitted in Item 16p, there shall be no physical connection between unpasteurized
products, dairy, non-dairy, or water, and pasteurized milk or milk products. Pasteurized non-dairy
products or water not completely separated from pasteurized milk and milk products, shall be
pasteurized at times and temperatures which meet at least the minimum times and temperatures
provided for in Definition EE or in the case of water have undergone an equivalent process found
acceptable by FDA and the Regulatory Agency or has undergone a hazard evaluation and safety
assessment of the specific water supply and application involved and has been treated, as necessary,
following a protocol acceptable to the Regulatory Agency, in consultation with FDA, to ensure the
water will not compromise the safety of the milk or milk product.
This Section does not require separate raw and pasteurized mechanical cleaning systems.
- Pasteurized re-circulation lines, divert lines, and leak-detect lines connecting to the
constant-level tank shall be designed so that there is an air gap between the termination of
these pipelines and the raw milk or milk product overflow level. This air gap must be equivalent
to at least two (2) times the diameter of the largest of these pipelines. For purposes of this
Section, an overflow is defined as the flood rim of the constant-level tank or any unrestricted
opening below the flood rim of the constant-level tank which is large enough that it is at least
equivalent to two (2) times the diameter of the largest of these pipelines.
- All milk and milk products that have overflowed, leaked, been spilled or improperly handled are
discarded. Milk and milk products drained from processing equipment at the end of a run, collected
from a defoamer system, and milk or milk product solids rinsed from equipment, containers or pipelines
shall be repasteurized only if such milk or milk products are handled in a sanitary manner and
maintained at 7°C (45°F) or less. When the handling and/or cooling of such milk and milk products
are not in compliance with this requirement, they shall be discarded. Milk and milk products from
damaged, punctured or otherwise contaminated containers or product from out-of-code containers shall
not be repasteurized for Grade "A" use.
- Means are provided to prevent contamination of milk and milk products, containers, utensils and
equipment by drippings, spillage and splash from overhead piping, platforms or mezzanines.
- The processing of foods and/or drinks other than Grade "A" milk and milk products are performed
to preclude the contamination of such milk and milk products.
- No product is handled in the milk plant that may create a public health hazard. Permission to
handle products other than those defined in Section 1 or to conduct operations in equipment or rooms,
other than those for which they are designated, should be provisional and subject to revocation if
found objectionable.
- In no case shall pasteurized milk or milk products, be standardized with unpasteurized milk or
milk products, unless the standardized milk or milk product is subsequently pasteurized.
- Reconstituted or recombined milk and milk products shall be pasteurized after reconstitution or
recombining of all ingredients.
ITEM 16p. PASTEURIZATION AND ASEPTIC PROCESSING
Pasteurization shall be performed as defined in Section 1, Definition EE of this Ordinance.
Aseptic processing shall be performed in accordance with 21 CFR 113, 21 CFR 108 and the Administrative
Procedures of Item 16p, sub-items (C), (D) and (E) of this Section. (Refer to Appendix L.)
In all cases, except for the specific exemptions provided for in ADMINISTRATIVE PROCEDURES,
#2, pasteurization of raw milk or milk product shall be performed before the raw milk or milk
product enters the reverse osmosis (RO), ultra-filtration (UF), evaporator or condensing equipment
and shall be performed in the milk plant where the processing is done. All condensed milk and milk
products transported to a milk plant for drying shall be re-pasteurized at the milk plant at which
it is dried. If condensed whey containing at least forty percent (40%) total solids, has been
partially crystallized by cooling, it may be transported to a separate milk plant for drying
without re-pasteurization, provided the following conditions are complied with:
- The condensed, partially crystallized whey is cooled and maintained at 7°C (45°F) or less.
- Milk tank trucks, dedicated to hauling pasteurized product, shall be used to transport the condensed,
partially crystallized whey and shall be washed and sanitized immediately prior to filling and then
sealed after filling until unloading.
- Separate unloading pumps and pipelines shall be provided and used only for the unloading of the
condensed, partially crystallized whey. Such pumps and pipelines shall be cleaned and sanitized
as a separate cleaning circuit.
PUBLIC HEALTH REASON
Health officials unanimously agree upon the public health value of pasteurization. Long experience
conclusively shows its value in the prevention of disease that may be transmitted through milk.
Pasteurization is the only practical, commercial measure, which if properly applied to all milk,
will destroy all milkborne disease organisms. Examination of lactating animals and milk handlers,
while desirable and of great value, can be done only at intervals and; therefore, it is possible
for pathogenic bacteria to enter the milk for varying periods before the disease condition is
discovered. Disease bacteria may also enter milk accidentally from other sources, such as flies,
contaminated water, utensils, etc. It has been demonstrated that the time-temperature combinations
specified by this Ordinance, if applied to every particle of milk or milk product will
devitalize all milkborne pathogens. Compilations of outbreaks of milkborne disease by the USPHS/FDA,
over many years, indicate that the risk of contracting disease from raw milk is approximately fifty
(50) times as great as from milk that has been "pasteurized".
A note of caution is in order. Although pasteurization destroys the organisms, it does not destroy
the toxins that may be formed in milk and milk products when certain staphylococci are present,
as from udder infections, and when the milk or milk product is not properly refrigerated before
pasteurization. Such toxins may cause severe illness. Aseptic processing has also been conclusively
demonstrated to be effective in preventing outbreaks from milkborne pathogens. Numerous studies and
observations clearly prove that the food value of milk is not significantly impaired by pasteurization.
ADMINISTRATIVE PROCEDURES
The pasteurization portion of this Item is deemed to be satisfied when:
- Every particle of milk or milk product is heated in properly designed and operated equipment that
meets the requirements of this Item and Appendix H., to one of the temperatures specified in the
following table and held continuously at or above that temperature for at least the time specified:
Table 3. Pasteurization Temperature vs. Time
Temperature |
Time |
63°C (145°F) * |
30 minutes |
72°C (161°F) * |
15 seconds |
89°C (191°F) |
1.0 second |
90°C (194°F) |
0.5 seconds |
94°C (201°F) |
0.1 seconds |
96°C (204°F) |
0.05 seconds |
100°C (212°F) |
0.01 seconds |
*If the fat content of the milk product is 10 percent (10%) or more, or if it contains added sweeteners,
or is concentrated (condensed), the specified temperature shall be increased by 3°C (5°F).
Provided, that eggnog shall be heated to at least the following temperature and time specifications:
Table 3. Pasteurization Temperature vs. Time (continued)
Temperature |
Time |
69°C (155°F) |
30 minutes |
80°C (175°F) |
25 seconds |
83°C (180°F) |
15 seconds |
Provided further, that nothing shall be construed as barring any other pasteurization process,
which has been recognized by FDA to be equally efficient and which is approved by the Regulatory
Agency.
- All milk and milk products shall be pasteurized, prior to the entrance into RO, UF, evaporator
or condensing equipment, and shall be performed in the milk plant where the processing is done,
except that:
- If the product is whey, pasteurization is not required, provided:
- (1) The product is acid whey (pH less than 4.7); or
- (2) It is processed in RO or UF equipment at temperatures at or below 7°C (45°F).
- If the product is raw milk for pasteurization, the product may be concentrated by the use
of RO or UF membrane filtration without pasteurization, prior to entrance into the equipment,
provided the following sampling, testing, design, installation and operational criteria are met:
- (1) Prior to processing, all raw milk supplies are sampled and tested for antibiotic residues
in accordance with the provisions of Appendix N.;
- (2) The RO or UF filtration system is designed and operated to assure that milk or milk product
temperature is maintained at or below 7°C (45°F) throughout the process;
- (3) The RO or UF system must be equipped with temperature monitoring and recording devices that
comply with the applicable specifications outlined in Appendix E. of this Ordinance.
At a minimum, milk or milk product temperature shall be monitored and recorded prior to entering
the system, prior to entering each stage of the modules in series that contains cooling, and
prior to any final cooler; and
- (4) If the RO or UF system is not designed, installed and operated in accordance with the
above noted criteria, the raw milk or milk product must be pasteurized prior to entering the
RO or UF system.
- All condensed milk and milk products transported to a milk plant for drying shall be
re-pasteurized at the milk plant where it is dried.
- If condensed whey containing at least forty percent (40%) total solids, has been partially
crystallized by cooling, it may be transported to a separate milk plant for drying without
re-pasteurization, provided the following conditions are complied with:
- The condensed, partially crystallized whey is cooled and maintained at 7°C (45°F)
or less.
- b. Milk tank trucks used to transport the condensed, partially crystallized whey, shall be
washed and sanitized immediately prior to filling and are sealed after filling until unloading.
- Separate unloading pumps and pipelines shall be provided and used only for the unloading
of the condensed, partially crystallized whey. Such pumps and pipelines shall be cleaned and
sanitized as a separate cleaning circuit.
- The design and operation of pasteurization equipment and all appurtenances thereto shall
comply with the applicable specifications and operational procedures of Subitems (A), (B),
(D) and (E).
ITEM 16p.(A) BATCH PASTEURIZATION
All indicating and recording thermometers used in connection with the batch pasteurization
of milk or milk products shall comply with the applicable specifications set forth in
Appendix H. Specifications for test thermometers and other test equipment appear in Appendix I.
PUBLIC HEALTH REASON
Unless the temperature-control instruments and devices used on pasteurization equipment
are accurate within known limits, there can be no assurance that the proper pasteurization
temperature is being applied. Pasteurization must be performed in equipment, which is
properly designed and operated and which insures that every particle of milk or milk product
will be held continuously at the proper temperature for the specified period of time.
Recording thermometers are the only known means for furnishing the Regulatory Agency with
a record of the time and temperature of pasteurization. Experience has shown that recording
thermometers, due to their mechanical complexity, are not entirely reliable. Therefore,
mercury indicating thermometers or equivalent, which are much more reliable, are needed to
provide a check on the recording thermometer and assurance that proper temperatures are
being applied.
The recording thermometer shows the temperature of the milk or milk product immediately
surrounding its bulb, but cannot indicate the temperature of the milk or milk product in
other portions of the batch pasteurizer. Similarly, it shows the holding time in
manual-discharge vats, but not in automatic-discharge systems. The pasteurizer must;
therefore, be so designed and so operated and, where necessary, provided with such
automatic controls, as to assure that every portion of the milk or milk product will be
subjected to the proper temperature for the required length of time.
Unless the outlet valve and connections to the vats are properly designed and operated,
cold pockets of milk or milk product may be held in the outlet valve or pipeline and raw
or incompletely pasteurized milk or milk product may leak into the outlet line during the
filling, heating or holding period.
Tests have shown that when foam is present on milk or milk product in vats or pockets
during pasteurization, the temperature of the foam may be well below the pasteurization
temperature. In such cases, pathogenic organisms that may be in the foam will not be
killed. Experience indicates that some foam is present at some time in all vats,
particularly at certain seasons. Furthermore, in filling vats, milk or milk product
frequently is splashed on the surfaces and fixtures above the milk or milk product level,
as well as on the underside of the vat cover. Droplets of this splash may drop back into
the body of the milk or milk product, and since they may not have been at pasteurization
temperature for the required time, they may contain pathogenic organisms. Heating the air
above the milk or milk product, above pasteurization temperature, remedies these conditions.
When air heating is not provided, its need may frequently be demonstrated by swabbing milk
or milk product from the upper vat walls and from the underside of the cover, at the end
of the holding period, and running phosphatase tests on the swab samples.
Many milk plant operators have reported that the use of airspace heaters, especially with
partly filled vats with un-insulated lids, makes it easier to maintain the milk or milk
product at a uniform and sufficiently high temperature. It also helps to prevent the growth
of thermophilic organisms and promotes easier cleaning.
Obviously, if the design and construction of pasteurization vats and pocket covers do not
prevent leakage, condensation and the entrance of water and dust, the milk or milk product
may become contaminated with material containing disease bacteria. Keeping the covers
closed during operation will decrease the chance of contaminants such as dust, insects,
drip and splash from entering the milk or milk product.
ADMINISTRATIVE PROCEDURES
This Item is deemed to be satisfied when:
- TIME AND TEMPERATURE CONTROLS FOR BATCH PASTEURIZERS:
- Temperature Difference: The pasteurizer shall be so designed that the simultaneous
temperature difference between the milk or milk product, at the center of the coldest milk or
milk product in the vat, will not exceed 0.5°C (1°F) at any time during the holding
period.
The vat shall be provided with adequate agitation, operating throughout the holding period.
No batch of milk or milk product shall be pasteurized unless it covers a sufficient area of
the agitator to insure adequate agitation.
- Location and Required Readings of Indicating and Recording Thermometers: Each batch
pasteurizer shall be equipped with both an indicating and a recording thermometer.
The thermometers shall not read less than the required pasteurization temperature throughout
the required holding period. The milk plant operator shall check the temperature shown by the
recording thermometer against the temperature shown by the indicating thermometer at the start
of the holding period. This comparison shall be noted on the recording thermometer chart. The
recording thermometer shall not read higher than the indicating thermometer. No batch of milk
or milk product shall be pasteurized unless it is sufficient to cover the bulbs of both the
indicating and the recording thermometer.
- Assurance of Minimum Holding Periods: Batch pasteurizers shall be so operated that
every particle of milk or milk product will be held at not less than the minimum pasteurization
temperature continuously for at least thirty (30) minutes. When milk or milk products are raised
to pasteurization temperature in the vat, and cooling is begun in the vat simultaneously with or
before the opening of the outlet valve, the recording chart shall show at least thirty (30) minutes,
at not less than minimum pasteurization temperature. When milk or milk products are preheated to
pasteurization temperature before entering the vat, the recording chart shall show a holding period
of at least thirty (30) minutes, at not less than the minimum pasteurization temperature plus the
time of filling from the level of the recording thermometer bulb. When cooling is begun in the batch
pasteurizer, after opening the outlet valve, or is done entirely outside the batch pasteurizer, the
recording chart shall show at least thirty (30) minutes at not less than the minimum pasteurization
temperature plus the time of emptying to the level of the recording thermometer bulb.
When the recording time interval on the recording chart at the pasteurization temperature includes
filling and/or emptying time, such intervals shall be indicated on the recording chart, by the
operator, by removing the recording thermometer bulb from the milk or milk product for a sufficient
time to depress the pen; or by turning cold water into the vat jacket at the end of the holding period;
or by inscribing the holding time on the recording chart. The filling time and the emptying time for
each batch pasteurizer, so operated, shall be determined by the Regulatory Agency, initially and after
any change, which may affect these times.
No milk or milk product shall be added to the batch pasteurizer after the start of the holding
period.
- AIRSPACE HEATING:
- Means shall be provided and used in batch pasteurizers to keep the atmosphere above the milk or
milk product at a temperature not less than 3°C (5°F) higher than the minimum required
temperature of pasteurization, during the holding period. (Refer to Appendix H.)
- Each batch pasteurizer shall be equipped with an airspace thermometer. The surface of the milk
or milk product shall be at least 25 millimeters (1 inch) below the bottom of the thermometer bulb
when the vat is in operation.
- The temperature shown by the airspace thermometer shall be recorded on the recording thermometer
chart at the start of the holding period and at the end of the holding period, at a given time or
reference point as indicated on the recording chart.
- INLET AND OUTLET VALVES AND CONNECTIONS:
The following definitions shall apply to inlet and outlet valves and connections:
- "Valve Stop" shall mean a guide which permits turning the valve plug to, but not beyond,
the fully closed position.
- "The Fully Open Position" shall mean that position of the valve seat that permits the
maximum flow into or out of the pasteurizer.
- "The Closed Position" shall mean any position of the valve seat that stops the flow of
milk into or out of the pasteurizer.
- "The Fully Closed Position" shall mean that closed position of the valve seat which
requires the maximum movement of the valve to reach the fully open position.
- "The Just-Closed Position" shall mean that closed position of a plug-type valve in which
the flow into or out of the holder is barely stopped, or any position within 2 millimeters
(0.078 inches) thereof as measured along the maximum circumference of the valve seat.
- "Leakage" shall mean the entrance of unpasteurized milk or milk product into a batch
pasteurizer during the holding or emptying period, or the entrance of unpasteurized milk or
milk product into any pasteurized milk or milk product line at any time.
- "Leak-Protector Valve" shall mean a valve provided with a leak-diverting device,
which when the valve is in any closed position, will prevent leakage of milk or milk product
past the valve.
- "Close-Coupled Valve" shall mean a valve, the seat of which is either flush with the
inner wall of the pasteurizer or so closely coupled that no milk or milk product in the valve
is more than 0.5°C (1°F) colder than the milk or milk product at the center of the
pasteurizer at any time during the holding period.
A close-coupled valve, which is not truly flush, shall be considered as satisfying this
requirement when:
- (1) The vat outlet is so flared that the smallest diameter of the large end of the flare
is not less than the diameter of the outlet line, plus the depth of the flare; and
- (2) The greatest distance from the valve seat to the small end of the flare is not greater
than the diameter of the outlet line; and
- (3) In the case of batch pasteurizers, the outlet and the agitator are so placed as to
insure that milk or milk product currents will be swept into the outlet.
- DESIGN AND INSTALLATION OF VALVES AND CONNECTIONS:
All valves and connections shall comply with the following requirements:
- Valves and pipeline connections shall meet the requirements of Item 10p.
- All pipelines and fittings shall be so constructed and so located that leakage will
not occur.
- To prevent clogging, and to promote drainage, all leak-protection grooves in plug-type
outlet valves shall be at least 5 millimeters (0.187 inches wide) and at least 2.3 millimeters
(0.094 inches) deep at the center. Mating grooves shall provide these dimensions throughout
their combined length, whenever the valve is in, or approximately in, the fully closed position.
All single leak grooves, and all mating leak grooves when mated, shall extend throughout the
entire depth of the seat, so as to divert leakage occurring at all points throughout the
depth of the seat and so as to prevent air binding. Washers or other parts shall not obstruct
leak-protector grooves.
- A stop shall be provided on all plug-type outlet valves in order to guide the operator
in closing the valve so that unpasteurized milk or milk product may not inadvertently be
permitted to enter the outlet line. The stop shall be so designed that the plug will be
irreversible when the plug is provided with any grooves or their equivalent, unless duplicate,
diametrically opposite grooves are also provided. Stops shall be so designed that the operator
cannot turn the valve beyond the stop position, either by raising the plug or by any other means.
- Outlet valves, in addition to the requirements listed above, shall be so designed as to
prevent the accumulation of unpasteurized milk or milk product in the milk or milk product
passages of the valve when the valve is in any closed position.
- All outlets from vat pasteurizers shall be equipped with close-coupled leak-protector
valves or be otherwise similarly protected during filling, holding and emptying periods.
- All leak-protector grooved outlet valves shall be installed in the proper position to
insure the function of the leak-protector groves and the drainage of the leak-detector valve.
- All outlet valves shall be kept fully closed during filling, heating, and holding periods.
- Close-coupled vat pasteurizer outlet valve bodies and plugs shall be made of stainless
steel or of other materials that have heat transfer properties at least equal to stainless steel.
- All inlet pipelines are disconnected during the holding and emptying periods.
- RECORDING CHARTS:
All recording thermometer charts shall comply with all the applicable requirements of Item 16p(E)1.a.
ITEM 16p.(B) HIGH-TEMPERATURE-SHORT-TIME (HTST) CONTINUOUS-FLOW PASTEURIZATION
PUBLIC HEALTH REASON
(Refer to the Public Health Reason under Item 16p and 16p(A))
ADMINISTRATIVE PROCEDURES
This Item is deemed to be satisfied when:
- INDICATING THERMOMETERS AND RECORDER/CONTROLLER INSTRUMENTS:
All indicating thermometers and recorder/controller instruments and devices used in
connection with the HTST, continuous-flow pasteurization of milk or milk products shall
comply with the applicable specifications set forth in Appendix H.
- AUTOMATIC MILK CONTROLLER:
Each HTST, continuous-flow pasteurization system shall be equipped with an automatic
milk-flow control of the diversion type, which complies with the following definition,
specifications and performance requirements:
- Automatic Milk or Milk Product-Flow Controls: The term "automatic milk or milk
product-flow controls" shall mean those safety devices which control the flow of milk or
milk product in relation to the temperature of the milk or milk product or heating medium
and/or pressure, vacuum or other auxiliary equipment. Milk or milk product-flow controls
shall not be considered as part of the temperature control equipment. Milk or milk
product-flow controls shall be of the flow-diversion type, which automatically cause the
diversion of the milk or milk product in response to a sub-legal pasteurization temperature.
At sub-legal temperatures, FDDs return the milk or milk product to the raw milk or milk
product side of the heating system continuously until legal pasteurization temperatures
are obtained, at which time, the device restores forward-flow through the pasteurizer.
- FDDs: All FDDs used in continuous pasteurizers shall comply with the following
or equally satisfactory specifications:
- (1)The forward-flow of milk or milk product below the minimum pasteurization temperature
shall be prevented by requiring the timing pump to be de-energized when the milk or milk
product is below the pasteurization temperature and the valve is not in the fully diverted
position; or by any other equally satisfactory means.
- (2) When a packing gland is used to prevent leakage around the actuating stem, it shall
be impossible to tighten the stem-packing nut to such an extent as to prevent the valve
from assuming the fully diverted position.
- (3) A leak-escape shall be installed on the forward-flow side of the valve seat. However,
when backpressure is exerted on the forward-flow side of the valve seat, while the milk
or milk product-flow is being diverted, the leak-escape should lie between two valve seats
or between two portions of the same seat, one upstream and the other downstream from the
leak-escape. The leak-escape shall be designed and installed to discharge all leakage to
the outside, or to the constant-level tank through a line separate from the diversion line.
Provided, that when leakage is discharged to the constant-level tank, a sight glass shall be
installed in the leak-escape line to provide a visual means of leak detection.
- (4) The closure of the forward-flow seat shall be sufficiently tight so that leakage past
it will not exceed the capacity of the leak-escape device, as evidenced when the forward-flow
line is disconnected; and, in order that proper seating may not be disturbed, the length of
the connecting rod shall not be adjustable by the user.
- (5) The FDD shall be so designed and installed that failure of the primary motivating power
shall automatically divert the flow of milk or milk product.
- (6) The FDD shall be located downstream from the holder. The flow-control sensor shall be
located in the milk or milk product line not more than 46 centimeters (18 inches) upstream
from the FDD.
- (7) The FDD may be located downstream from the regenerator and/or cooler section, provided,
that when the FDD is located downstream from the regenerator and/or cooler section, the FDD s
hall be automatically prevented from assuming the forward-flow position until all
product-contact surfaces between the holding tube and FDD have been held at or above the
required pasteurization temperature continuously and simultaneously for at least the required
pasteurization time as defined in Definition EE of this Ordinance.
- (8) The pipeline from the diversion port of the FDD shall be self-draining and shall be free
of restrictions or valves; unless such restrictions are noticeable and valves are so designed
that stoppage of the diversion line cannot occur. In the case of HHST systems, which have the
FDD located downstream from the regenerator and/or cooler and are inter-wired or are computer
controlled to thoroughly clean the system, including the divert pipeline before the re-starting
of production, a cooling section, which is not self-draining, may be present in the divert pipeline.
- (9) When it is used, the pipeline from the leak-detector port of the FDD shall be self-draining and
shall be free of restrictions or valves.
- (10) For the timing pump, a one (1) second maximum "off" time delay is allowed to maintain the
flow-promoting device in the "on" position through the travel time of the FDD.
- (11) If the area between the divert and leak-detect valve seats is not self-draining when the
FDD is in the diverted position, a delay of at least one (1) second and not more than five
(5) seconds is required between the movement of the divert and leak-detect valves when the
FDD assumes the forward-flow position. Except that, the delay may be longer than five (5)
seconds if: the timing system is a magnetic flow meter based timing system; or if the holding
time in diverted-flow through an unrestricted divert valve line is longer than the required
pasteurization time as specified in Definition EE of this Ordinance; and except that,
no time delay is required in pasteurization systems in which the FDD is located downstream
from the pasteurized regenerator and in which all forward-flow product-contact surfaces of
the FDD are sanitized, or sterilized during the normal start-up process.
- (12) In the case of HHST pasteurizing systems utilizing temperatures and holding times to
meet the UP definition of this Ordinance, the FDD may be located downstream of the
regenerator and/or cooler section. Said FDD may alternatively be a system of the "Steam-Block Type"
as described in Appendix H. This FDD system shall allow for the flow of water and/or milk or milk
product to the constant-level tank through appropriate valves and coolers during sterilization
and when diverted.
- Milk or Milk Product-Flow Controller Instrumentation: The following requirements shall
be met with respect to the instrumentation of the milk or milk product-flow controller:
- (1) The thermal-limit-controller shall be set and sealed so that forward-flow of milk or milk
product cannot start unless the temperature at the controller sensor is above the required
pasteurization temperature as defined in Definition EE of this Ordinance for the milk
or milk product, and the process used, nor continue during descending temperatures when the
temperature is below the required pasteurization temperature. The seal shall be applied by
the Regulatory Agency after testing, and shall not be removed without immediately notifying
the Regulatory Agency. The system shall be so designed that no milk or milk product can be
bypassed around the controller sensor that shall not be removed from its proper position
during the pasteurization process. The cut-in and cut-out milk or milk product temperatures,
as shown by the indicating thermometer, shall be determined at the beginning of each day's
operation and entered upon the recorder chart daily by the milk plant operator.
- (2) In the case of pasteurization systems, with the FDD located downstream from the
regenerator and/or cooler section, additional temperature controllers and timers shall
be inter-wired with the thermal-limit-controller, and the control system shall be set
and sealed so that forward-flow of milk or milk product cannot start until all product-contact
surfaces between the holding tube and FDD have been held at or above the required pasteurization
temperature, continuously and simultaneously for at least the required pasteurization time as
defined in Definition EE of this Ordinance. The control system shall also be set and
sealed so that forward-flow cannot continue when the temperature of the milk or milk product
in the holding tube is below the required pasteurization temperature. Provided, that for
systems used for the processing of milk or milk products labeled as UP, it is not necessary
to set and seal the thermal-limit-controller at or above 138°C (280°F). Also, provided
that these systems shall meet all the public health control requirements for HHST systems,
and that the recorder-controller chart shows that the UP milk or milk product has been
processed at a minimum temperature of 138°C (280°F), and has been verified by the
Regulatory Agency to have a calculated holding time of at least two (2) seconds. The seal,
if required, shall be applied by the Regulatory Agency after the equipment has been tested,
and shall not be removed without immediately notifying the Regulatory Agency. The system
shall be so designed that no milk or milk product can be bypassed around the control sensors,
which shall not be removed from their proper position during the pasteurization process.
For these pasteurization systems, daily measurement by the operator of the cut-in and cut-out
temperatures is not required.
- (3) Manual switches for the control of pumps, homogenizers or other devices, which produce
flow through the holder, shall be wired so that the circuit is completed only when milk or
milk product is above the required pasteurization temperature as defined in Definition EE
of this Ordinance for the milk or milk product and the process used, or when the FDD
is in the fully-diverted position.
- Holding Tube:
- (1) Holding tubes shall be designed to provide for the holding of every particle of the milk
or milk product for at least the time required in Definition EE of this Ordinance for
the milk or milk product and the process used.
- (2)The holding tube shall be so designed that the simultaneous temperature difference between
the hottest and coldest milk or milk product, in any cross section of flow, at any time during
the holding period, will not be greater than 0.5°C (1°F).This requirement may be assumed
to have been satisfied, without testing, in tubular holders of 17.8 centimeters (7 inches) or
smaller diameter that are free of any fittings through which the milk or milk product may not
be thoroughly swept.
- (3) No device shall be permitted for short-circuiting a portion of the holding tube to
compensate for changes in rate of milk or milk product-flow. Holding tubes shall be installed
so that sections of pipe cannot be left out, resulting in a shortened holding time.
- (4) The holding tube shall be arranged to have a continuously upward slope in the direction of
flow of not less than 2.1 centimeters per meter (0.25 inches per foot).
- (5) Supports for holding tubes shall be provided to maintain all parts of the holding tubes in
a fixed position, free from any lateral or vertical movement.
- (6) The holding tube shall be so designed that no portion between the inlet and the
recorder-controller temperature sensor is heated.
The following Items apply to HHST systems:
(7) The holding time for HHST systems must be determined from the pumping rate rather than
by the salt conductivity test, because of the short holding tube. The holding tube length
must be such that the fastest flowing particle, of any milk or milk product, will not
traverse the holding tube in less than the required holding time. Since laminar flow,
the fastest flowing particle travels twice as fast as the average flowing particle, can
occur in the holding tube during pasteurization of high-viscosity milk or milk products,
holding tube lengths are calculated as twice the length required to hold the average flow
for the time standard.
- (8) With the direct steam heating processes, the holding time is reduced because the milk
or milk product volume increases as the steam condenses to water during heating in the
injector. This surplus water is evaporated as the pasteurized milk or milk product is
cooled in the vacuum chamber. For example, with a 66°C (120°F) increase by steam
injection, which is probably the maximum temperature rise that will be used, a volume
increase of twelve percent (12%) will occur in the holding tube. The measurement of the
average flow rate, at the discharge of the pasteurizer, does not reflect this volume
increase in the holding tube. However, this volume increase, i.e., holding time decrease,
must be considered in the calculations.
- (9) For those HHST systems capable of operating with less that 518 kPa (75 psig) pressure
in the holding tube, a pressure limit indicator/pressure switch must be interwired so that
the FDD will move to the divert position if the milk or milk product pressure falls below
a prescribed value. For operating temperatures between 89°C (191°F) and 100°C
(212°F) the instrument must be set at 69 kPa (10 psi). To prevent vaporization in
the holding tube, which may substantially reduce residence times, HHST systems operating above 100°C
(212°F), the instrument must be set at 69 kPa (10 psi) above the boiling pressure of the product,
at its maximum temperature in the holding tube.
- (10) With the steam injection process, a differential pressure limit indicator across the injector
is needed to keep the heated milk or milk product in the liquid phase and to ensure adequate
isolation of the injection chamber. The instrument must have a differential pressure switch so
that the FDD will move to the divert position if the pressure drop across the injector falls below
69 kPa (10 psi).
- Indicating and Recording Thermometers:
- (1) An indicating thermometer shall be located as near as practicable to the temperature
sensor of the recorder/controller, but may be located a short distance upstream from the
latter where milk or milk product between the two thermometers does not differ significantly
in temperature.
- (2) The temperature shown by the recorder/controller shall be checked daily by the milk plant
operator against the temperature shown by the indicating thermometer. Readings shall be recorded
on the chart. The recorder/controller shall be adjusted to read no higher than the indicating
thermometer.
- (3) The recorder/controller charts shall comply with the applicable provisions of Item 16p(E)1.a.
- Flow-Promoting Devices:
- (1) The pump or pumps and other equipment which may produce flow through the holding tube
shall be located upstream from the holding tube, provided that pumps and other flow-promoting
devices may be located downstream from the holding tube, if means are provided to eliminate
negative pressure between the holding tube and the inlet to such equipment. When vacuum equipment
is located downstream from the holding tube, an effective vacuum breaker, plus an automatic means
of preventing a negative pressure in the line between the FDD and the vacuum chamber, shall be
acceptable.
- (2) The speed of pumps or other flow-promoting devices, governing the rate of flow through the
holding tube, shall be so controlled as to insure the holding of every particle of milk or milk
product for at least the time required as defined in Definition EE of this Ordinance for
the milk or milk product and the process used. In all cases, the motor shall be connected to the
timing pump by means of a common drive shaft, or by means of gears, pulleys, or a variable-speed
drive, with the gear box, the pulley box or the setting of the variable speed protected in such
a manner that the holding time cannot be shortened without detection by the Regulatory Agency.
This shall be accomplished by the application of a suitable seal(s) after being tested by the
Regulatory Agency and such seal(s) shall not be broken without immediately notifying the
Regulatory Agency. This provision shall also apply to all homogenizers used as timing pumps.
Variable speed drives, used in connection with the timing pump, shall be so constructed that
wearing or stretching of the belt results in a slowdown, rather than a speedup, of the pump.
The metering or timing pump shall be of the positive-displacement type or shall comply with the
specifications for magnetic flow meter based timing systems as outlined in Appendix H. Timing
pumps and homogenizers, when used as a timing pump, shall not have by-pass lines connected from
their outlet pipelines to their inlet pipelines during processing if an additional flow-promoting
or vacuum producing device is located within the system. When a homogenizer is used in conjunction
with a timing pump it shall be either:
- i) Of larger capacity than the timing pump: In which case, an unrestricted, open, recirculation
line shall be used to connect the outlet pipeline from the homogenizer to its inlet line. The
recirculation line must be of at least the same or larger diameter than the inlet pipeline
feeding milk or milk product to the homogenizer. A check-valve, allowing flow from the outlet
line to the inlet line, may be used in the recirculating line, provided it is of the type which
provides a cross-sectional area at least as large as the recirculating line.
- ii) Of smaller capacity than the timing pump: In which case, a relief line and valve shall be
used. Such relief line shall be located after the timing pump and before the inlet to the
homogenizer and shall return milk or milk product to the constant-level tank or to the outlet
of the constant-level tank, upstream of any booster pump or other flow-promoting device.
For those systems that do not homogenize all milk or milk products and wish to utilize a by-pass
line to by-pass the homogenizer while processing such milk or milk product, the by-pass line
must be connected with valves that are so designed that both lines cannot be open at the same
time. This may be accomplished with three (3)-way plug valves with properly designed and operating
pins or other automatic, fail-safe valves that accomplish the same objective.
- (3)The holding time shall be taken to mean the flow time of the fastest particle of milk or milk
product at or above the required pasteurization temperature as defined in Definition EE of this
Ordinance for the milk or milk product and the process used, throughout the holding tube
section; i.e., that portion of the system that is outside of the influence of the heating medium,
slopes continuously upward in the downstream direction and is located upstream from the FDD. Tests
for the holding time shall be made when all equipment and devices are operated and adjusted to
provide for maximum flow. When a homogenizer is located upstream from the holding tube, the holding
time shall be determined with the homogenizer in operation with no pressure on the homogenizer valves.
For those systems which do not homogenize all milk or milk products and utilize by-pass lines as
outlined in f.(2)(i) above, the holding time shall be tested in both flow patterns and the fastest
time used. The holding time shall be tested during both forward and diverted-flow.If it is necessary
to lengthen the holding time during diverted-flow, an identifiable restriction may be placed in the
vertical portion of the diversion pipeline. When vacuum equipment is located downstream from the
holding tube, the holding time shall be tested with the timing pump operating at maximum flow and
the vacuum equipment adjusted to provide for the maximum vacuum.The holding time shall be tested in
both forward and diverted-flow by the Regulatory Agency initially; semiannually thereafter; after
any alteration or replacement that may affect the holding time; and whenever the seal of the speed
setting has been broken.
- Heating by Direct Addition of Steam: Steam injection is an inherently unstable process;
accordingly, when steam is injected into a fluid, condensation of the steam may not be completed
inside the injector unless the proper design criteria are used. Lack of complete condensation
inside the injector would cause temperature variations in the holding tube that could lead to
some milk or milk product particles being processed below pasteurization temperature. When
culinary steam is injected directly into milk or milk product, as the means of terminal heating
to achieve pasteurization temperature, the steam injector shall be designed, installed and operated
to comply with the following or equally satisfactory specifications:
- (1) The milk or milk product and steam flows must be isolated from pressure fluctuations inside
the injection chamber. One (1) method of isolation is to insert supplementary orifices on the milk
or milk product inlet and the heated milk or milk product outlet of each injector. The two (2)
supplementary orifices must be sized for at least a 69 kPa (10 psi) milk or milk product pressure
drop across the injector during a simulation of normal operations. Excessive vibrations, pressure
fluctuations or erratic noise levels indicate an unstable steam injection system and a need to
check the isolation of the injection chamber.
- (2) The process should be as free as possible of non-condensable gases that may evolve from the
product or be carried in the steam supply. Any two-phase flow caused by the non-condensable gases
would displace the product in the holding tube, resulting in reduced residence times. In addition,
these gases in the steam supply may also markedly alter the condensation mechanism at the point of
injection. Accordingly, the steam boiler shall be supplied with a de-aerator. The de-aerator will
aid in keeping the product in the holding tube as free as possible of non-condensable gases.
- Prevention of Milk or Milk Product Adulteration with Added Water:
- (1) When culinary steam is introduced directly into the milk or milk product, downstream from the
FDD, means shall be provided to preclude the addition of steam to the milk or milk product, unless
the FDD is in the forward-flow position. This provision may be satisfied by the use of an automatic
steam control valve with a temperature sensor located downstream from the steam inlet, or by the use
of an automatic solenoid valve installed in the steam line and so wired through the FDD controls, so
that steam cannot flow unless the FDD is in the forward-flow position.
- (2) When culinary steam is introduced directly into the milk or milk product, automatic means, i.e.,
stand-alone and/or PLC-based ratio control system, shall be provided to maintain a proper temperature
differential between incoming and outgoing milk or milk product to preclude dilution with water.
- (3) Where a water feed line is connected to a vacuum condenser and the vacuum condenser is not
separated from the vacuum chamber by a physical barrier, means shall be provided to preclude the
backup and overflow of water from the vacuum condenser to the vacuum chamber. This provision may
be satisfied by the use of a safety shutoff valve, located on the water feed line to the vacuum
condenser, which is automatically actuated by a control, which will shut off the in-flowing water,
if for example, the condensate pump stops and the water level rises above a predetermined point in
the vacuum condenser. This valve may be actuated by water, air or electricity and shall be so
designed that failure of the primary motivating power will automatically stop the flow of water
into the vacuum condenser.
ITEM 16p.(C) ASEPTIC PROCESSING SYSTEMS
PUBLIC HEALTH REASON
Aseptically processed milk and milk products are being packaged in hermetically sealed containers
and stored for long periods of time under non-refrigerated conditions. These conditions are favorable
to the growth of many types of bacteria, including pathogenic, toxin producing and spoilage organisms.
Because of this, every precaution must be taken to ensure that the chosen heat process, for the
particular milk or milk product, destroys all viable organisms and their spores. The subsequent
handling, packaging and storage processes do not provide an opportunity for recontamination of the
milk or milk product. The selected process must conform to the acceptable requirements for low acid
canned foods.
ADMINISTRATIVE PROCEDURES
This Item is deemed to be satisfied when:
The design and operation of aseptic processing systems comply with the applicable specifications
and operational procedures of Item 16p, sub-items (C), (D) and (E). Provided, that nothing shall
be construed as barring any other aseptic processing system which have been recognized by FDA to
be equally effective and which is approved by the Regulatory Agency.
INDICATING THERMOMETERS AND RECORDER/CONTROLLER INSTRUMENTS:
All indicating thermometers, recorder/controller instruments and devices, used in connection
with aseptic processing systems, used for the aseptic processing of milk or milk products
shall comply with the applicable specifications set forth in Appendix H.
- ASEPTIC PROCESSING EQUIPMENT:
- Temperature Indicating Device: Each aseptic processing system shall be equipped with at
least one (1) mercury-in-glass thermometer or an equivalent temperature-indicating device.
- Temperature Recorder/Controller: An accurate temperature recorder/controller shall be
installed in the milk or milk product at the holding tube outlet and before the inlet to the
cooler or regenerator. The following requirements shall be met with respect to the instrumentation
of the temperature recorder/controller:
- (1) The temperature recorder/controller shall be set and sealed so that during milk or milk product
processing the forward-flow of milk or milk product cannot start unless the temperature at the controller
sensor is above the required temperature for the milk or milk product and the process used, nor continue
during descending temperatures when the temperature is below the required temperature.
The seal shall be applied by the Regulatory Agency after testing and shall not be removed without
immediately notifying the Regulatory Agency. The system shall be so designed that no milk or milk
product can be bypassed around the controller sensor, which shall not be removed from its proper
position during the processing of aseptic milk and milk products.
- (2) Additional temperature-controllers and timers shall be interwired with the thermal-limit controller,
and the control system shall be set and sealed so that forward-flow of milk or milk product cannot start
until all product-contact surfaces between the holding tube and FDD have been held at or above the
required sterilization temperature, continuously and simultaneously for at least the required
sterilization time. The control system shall also be set and sealed so that forward-flow cannot
continue when the temperature of the milk or milk product in the holding tube is below the required
temperature. The seal shall be applied by the Regulatory Agency after being tested and shall not be
removed without immediately notifying the Regulatory Agency. The system shall be so designed that no
milk or milk product can be bypassed around the control sensors, which shall not be removed from their
proper position during the processing of aseptic milk and milk products.
- (3) Manual switches for the control of pumps, homogenizers or other devices that produce flow through
the holding tube, shall be wired so that the circuit is completed only when the milk or milk product
is above the required temperature for the milk or milk product and the process used, or when the FDD
is in the fully diverted position.
- Timing Pump:
- (1) A timing pump shall be located upstream from the holding tube and shall be operated to maintain
the required rate of milk or milk product flow. The motor shall be connected to the timing pump by
means of a common drive shaft, or by means of gears, pulleys or a variable-speed drive, with the
gear box, the pulley box or the setting of the variable speed protected in such a manner that the
hold time cannot be shortened without detection by the Regulatory Agency. This shall be
accomplished by the application of a suitable seal(s) after being tested by the Regulatory
Agency and such seal(s) shall not be broken without immediately notifying the Regulatory Agency.
This provision shall apply to all homogenizers used as timing pumps. Variable speed drives,
used in connection with the timing pump, shall be so constructed that wearing or stretching
of the belt results in a slowdown, rather than a speedup, of the pump. The metering or
timing pump shall be of the positive-displacement type or shall comply with the specifications
for magnetic flow meter based timing systems.
- (2) The holding time shall be taken to mean the flow time of the fastest particle of milk or
milk product throughout the holding tube section, i.e., that portion of the system that is
outside of the influence of the heating medium; and slopes continuously upward in the downstream
direction; and is located upstream from the FDD.
- Milk or Milk Product Holding Tube:
- (1) The milk or milk product holding tube shall be designed to give continuous holding of
every particle of milk or milk product for at least the minimum holding time specified in
the scheduled process. The holding tube shall be designed, so that no portion of the holding
tube between the milk or milk product inlet and the milk or milk product outlet can be heated.
In addition, it must be sloped upward at least 2.1 centimeters per meter (0.25 inches per foot).
Supports for holding tubes shall be provided to maintain all parts of the holding tubes in a
fixed position, free from any lateral or vertical movement.
- (2) No device shall be permitted for short-circuiting a portion of the holding tube to
compensate for changes in rate of milk or milk product flow. Holding tubes shall be
installed so that sections of pipe cannot be left out, resulting in a shortened holding
time. The holding time for the processes must be determined from the pumping rate,
rather than by the salt conductivity test.
- (3) The holding tube length must be such that the fastest flowing particle of any milk
or milk product will not traverse the holding tube in less than the required holding time.
NOTE: With the direct addition of steam, the holding time is reduced because
the milk or milk product volume increases as the steam condenses to water during heating.
This surplus water is evaporated as the aseptically processed milk or milk product is cooled
in the vacuum chamber. For example, with a 66°C (120°F) increase by steam injection,
which is probably the maximum temperature rise that will be used, a volume increase of twelve
percent (12%) will occur in the holding tube. The measurement of the average flow rate at the
discharge of the aseptic processor does not reflect this volume increase in the holding tube.
However, this volume increase, i.e., holding time decrease, must be considered in the
calculations.
- (4) An aseptic processing system which can operate with milk or milk product in forward-flow
mode, with less than 518 kPa (75 psig) pressure in the holding tube shall be equipped with a
pressure limit indicator/pressure switch in the holding tube to assure that the heated milk or
milk product remains in the liquid phase. In systems that do not have a vacuum chamber between
the holding tube and the aseptic milk or milk product side of the regenerator, this can be
established by verifying that the aseptic processing equipment cannot operate in forward-flow
with less than 518 kPa (75 psig) pressure on the aseptically processed side of the regenerator.
(Refer to Appendix I., Test 9). The pressure limit indicator/pressure switch must be interwired
so that the FDD, milk or milk product divert system, milk or milk product divert valve or other
acceptable control system will move to the divert position, if the milk or milk product pressure
falls below a prescribed value. The instrument must be set at a pressure 69 kPa (10 psi) above the
boiling pressure of the milk or milk product at its maximum temperature in the holding tube. If
this pressure is too low, the resultant vaporization in the holding tube will substantially reduce
residence times.
- (5) With the steam injection process, a differential pressure limit indicator, across the injector,
is needed to ensure adequate isolation of the injection chamber. The instrument must have a differential
pressure switch so that the FDD will move to the divert position if the pressure drop across the
injector falls below 69 kPa (10 psi).
- Heating by Direct Addition of Steam: Steam injection is an inherently unstable process;
accordingly, when steam is injected into a fluid, condensation of the steam may not be completed
inside the injector unless the proper design criteria are used. Lack of complete condensation inside
the injector would cause temperature variations in the holding tube, which could lead to some milk
or milk product particles being processed below filed process temperature. When culinary steam is
injected directly into milk or milk products, as the means of terminal heating to achieve aseptic
processing temperature, the steam injector shall be designed, installed and operated to comply with
the following or equally satisfactory specifications:
- (1) The milk or milk product and steam flows must be isolated from pressure fluctuations inside
the injection chamber. One (1) method of isolation is to insert supplementary orifices on the
milk or milk product inlet and the heated milk or milk product outlet of each injector. The
two (2) supplementary orifices must be sized for at least a 69 kPa (10 psi) milk or milk
product pressure drop across the injector during a simulation of normal operations. Excessive
vibrations, pressure fluctuations or erratic noise levels indicate an unstable steam injection
system and a need to check the isolation of the injection chamber.
- (2)The process should be as free as possible of non-condensable gases that may evolve from the
milk or milk product or be carried in the steam supply. Any two (2) phase flow, caused by the
non-condensable gases, would displace the milk or milk product in the holding tube, resulting in
reduced residence times. In addition, these gases in the steam supply may also markedly alter
the condensation mechanism at the point of injection. Accordingly, the steam boiler shall be
supplied with a de-aerator. The de-aerator will aid in keeping the milk or milk product in the
holding tube as free as possible of non-condensable gases.
- Prevention of Milk or Milk Product Adulteration with Added Water:
- (1) When culinary steam is introduced directly into the milk or milk product, automatic means, i.e.,
stand-alone and/or PLC-based ratio control system, shall be provided to maintain a proper temperature
differential between incoming and outgoing milk or milk products to preclude dilution with water.
- (2) Where a water feed line is connected to a vacuum condenser and the vacuum condenser is not
separated from the vacuum chamber by a physical barrier, means shall be provided to preclude the
back-up and overflow of water from the vacuum condenser into the vacuum chamber. This provision
may be satisfied by the use of a safety shutoff valve, located on the water feed line to the vacuum
condenser that is automatically actuated by a control that shuts off the in-flowing water. This valve
may be actuated by water, air or electricity and shall be so designed that failure of the primary
motivating power will automatically stop the flow of water into the vacuum condenser.
- FDD: All FDDs used in continuous aseptic process systems shall comply with Item 16p(B)2.b.
or equally satisfactory specifications.
ITEM 16p.(D) PASTEURIZERS AND ASEPTIC PROCESSING SYSTEMS EMPLOYING REGENERATIVE HEATING
PUBLIC HEALTH REASON
To prevent contamination of the pasteurized milk or milk product in regenerators, the raw milk or
milk product must always be under less pressure than the pasteurized milk or milk product or the
heat-transfer medium. In the case of milk or milk-to-milk or milk regenerators, this requirement
is necessary to prevent contamination of the pasteurized milk or milk product by the raw milk or
milk product if flaws should develop in the metal or joints separating the raw and pasteurized
milk or milk product.
ADMINISTRATIVE PROCEDURES
This Item is deemed satisfied when:
MILK OR MILK PRODUCT-TO-MILK OR MILK PRODUCT REGENERATIVE HEATING
Pasteurizers and aseptic processing systems employing milk or milk product-to-milk or milk
product regenerative heating with both sides closed to the atmosphere shall comply with the
following or equally satisfactory specifications:
- Regenerators shall be constructed, installed and operated so that pasteurized or aseptic
milk or milk product in the regenerator will automatically be under greater pressure than raw
milk or milk product in the regenerator at all times.
- The pasteurized or aseptic milk or milk product, between its outlet from the regenerator and
the nearest point downstream open to the atmosphere, shall rise to a vertical elevation of 30.5
centimeters (12 inches) above the highest raw milk or milk product level, downstream from the
constant-level tank, and shall be open to the atmosphere at this or a higher elevation.
- The overflow of the top rim of the constant-level tank shall always be lower than the lowest
milk or milk product level in the regenerator.
- No pump or flow-promoting device which can affect the proper pressure relationships within the
regenerator shall be located between the pasteurized or aseptic milk or milk product outlet from
the regenerator and the nearest downstream point open to the atmosphere.
- No pump shall be located between the raw milk or milk product inlet to the regenerator and the
constant-level tank, unless it is designed and installed to operate only when milk or milk product
is flowing through the pasteurized or aseptic milk or milk product side of the regenerator and when
the pressure of the pasteurized or aseptic milk or milk product is higher than the maximum pressure
produced by the pump. This may be accomplished by wiring the booster pump so that it cannot operate
unless:
- The timing pump is in operation;
- The FDD is in forward-flow position; and
- The pasteurized or aseptic milk or milk product pressure exceeds, by at least 6.9 kPa (1 psi),
the maximum pressure developed by the booster pump. Pressure gauges shall be installed at the raw
milk or milk product inlet to the regenerator and the pasteurized or aseptic milk or milk product
outlet of the regenerator or the outlet of the cooler. The accuracy of these required pressure
gauges shall be checked, by the Regulatory Agency, on installation; quarterly thereafter; and
following repair or adjustment.
- The motor, casing and impeller of the booster pump shall be identified for those systems
that rely on a pressure switch, located only on the pasteurized side, and such records maintained
as directed by the Regulatory Agency.
- All electric wiring interconnections for the booster pump should be in permanent conduit,
except that rubber covered cable may be used for final connections, with no electrical connections
to defeat the purpose of any provisions of this Ordinance.
- All raw milk or milk product in the regenerator will drain freely back into the constant-level
tank when the raw milk or milk product pump(s) are shut down and the raw milk or milk product
outlet from the regenerator is disconnected.
- When vacuum equipment is located downstream from the FDD, means shall be provided to prevent
the lowering of the pasteurized or aseptic milk or milk product level in the regenerator during
periods of diverted-flow or shutdown. An effective vacuum breaker, plus an automatic means of
preventing a negative pressure, shall be installed in the line between the vacuum chamber and
the pasteurized or aseptic milk or milk product inlet to the regenerator.
- In the case of pasteurization systems, with the FDD located downstream from the regenerator
and/or cooler section, the requirements of paragraphs (2), (3) and (8) of this Section may be
eliminated. Provided, that a differential pressure controller is used to monitor the highest
pressure in the raw milk or milk product side of the regenerator and the lowest pressure in
the pasteurized side of the regenerator, and the controller is interlocked with the FDD and is
set and sealed so that whenever improper pressures occur in the regenerator, forward-flow of milk
or milk product is automatically prevented and will not start again until all milk or milk product-contact
surfaces between the holding tube and FDD have been held at or above the required pasteurization
temperature, continuously and simultaneously for at least the required pasteurization time as defined
in Definition EE of this Ordinance.
In the case of aseptic processing systems used for producing aseptic milk and milk products, there
shall be an accurate differential pressure recorder-controller installed on the regenerator.
The scale divisions shall not exceed 13.8 kPa (2 psi) on the working scale of not more than 138 kPa
(20 psi) per 2.54 centimeters (1 inch). The controller shall be tested for accuracy against a known
accurate standard pressure indicator upon installation; at least once every three (3) months of
operation thereafter; or more frequently if necessary, to ensure its accuracy. One (1) pressure
sensor shall be installed at the aseptic milk or milk product regenerator outlet and the other
pressure sensor shall be installed at the raw milk or milk product regenerator inlet.
- When culinary steam is introduced directly into milk or milk product to achieve pasteurization
or aseptic processing temperature, and vacuum equipment is located downstream from the holding tube,
the requirement that a vacuum breaker be installed at the inlet to the pasteurized or aseptic side of
the regenerator may be eliminated. Provided, that the differential pressure controller is installed
and wired to control the FDD as described in Paragraph 10 of this Section.
- When the differential pressure controller is installed and wired to control the FDD as described
in Paragraph 10 of this Section, the raw milk or milk product booster pump may be permitted to run at
all times. Provided, that the timing pump is in operation.
MILK OR MILK PRODUCT-TO-WATER-TO-MILK OR MILK PRODUCT REGENERATIVE HEATING
Option 1. Milk or milk product-to-water-to-milk or milk product regenerators, with both the
milk or milk product and the heat-transfer water in the raw milk or milk product section, closed to
the atmosphere, shall comply with the following or equally satisfactory specifications:
- Regenerators of this type shall be so designed, installed and operated that the heat-transfer-medium
side of the regenerator, in the raw milk or milk product section, will automatically be under greater
pressure than the raw milk or milk product side at all times.
- The heat-transfer water shall be a safe water and the heat-transfer water shall be in a covered
tank, which is open to the atmosphere at an elevation higher, by at least 30.5 centimeters (12 inches),
than any raw milk or milk product level downstream from the constant-level tank. The heat-transfer
water between its outlet from the regenerator and the nearest point downstream open to the atmosphere
shall rise to a vertical elevation of at least 30.5 centimeters (12 inches) above any raw milk or milk
product in the system and shall be open to the atmosphere at this or a higher elevation.
- The heat-transfer water circuit shall be full of water at the beginning of the run and all loss
of water from the circuit shall be automatically and immediately replenished whenever raw milk or
milk product is present in the regenerator.
- The overflow of the top rim of the constant-level tank shall always be lower than the lowest
milk or milk product level in the raw milk or milk product section of the regenerator. The
regenerator shall be designed and installed so that all raw milk or milk product shall drain
freely back to the upstream supply tank when the raw milk or milk product pumps are shut down
and the raw milk or milk product line is disconnected from the regenerator outlet.
- No pump shall be located between the raw milk or milk product inlet to the regenerator
and the constant-level tank, unless it is designed and installed to operate only when water
is flowing through the heat-transfer section of the regenerator and when the pressure of the
heat-transfer water is higher than the pressure of the raw milk or milk product. This may be
accomplished by wiring the booster pump so that it cannot operate unless:
- (1) The heat-transfer water pump is in operation; and
- (2) The heat-transfer water pressure exceeds, by at least 6.9 kPa (1 psi), the raw milk or
milk product pressure in the regenerator. A differential pressure-controller shall be
installed at the raw milk or milk product inlet and the heat-transfer water outlet of the
regenerator. The raw milk or milk product booster pump must be wired so that it cannot operate
unless the differential pressure is met. The accuracy of the required differential
pressure-controller shall be checked by the Regulatory Agency on installation; quarterly
thereafter; and following repair or replacement.
Option 2. Milk or milk product-to-water-to-milk or milk product regenerators may
also be constructed, installed and operated such that the pasteurized or aseptic milk or
milk product in the regenerator will be under greater pressure than the heat-transfer-medium
in the pasteurized or aseptic milk or milk product side of the regenerator:
- A differential pressure controller shall be used to monitor pressures of the pasteurized
milk or milk product and the heat-transfer-medium.
- In the case of aseptic processing systems, a differential pressure-recorder shall be used
to monitor pressures of the aseptic milk or milk product and the heat-transfer-medium.
- In either case, one pressure sensor shall be installed at the pasteurized or aseptic milk
or milk product outlet of the regenerator and the other pressure sensor shall be installed
at the heat-transfer-medium inlet of the pasteurized or aseptic milk or milk product side
of the regenerator. This controller or recorder-controller shall divert the FDD whenever
the lowest pressure of pasteurized or aseptic milk or milk product in the regenerator fails
to exceed the highest pressure of the heat-transfer-medium in the pasteurized or aseptic milk
or milk product side of the regenerator by at least 6.9 kPa (1 psi). Forward-flow of milk
or milk product shall be automatically prevented until all milk or milk product-contact
surfaces between the holding tube and the FDD have been held at or above the required
pasteurization or sterilization temperature continuously and simultaneously for at least
the pasteurization or sterilization time.
- The heat-transfer-medium pump shall be wired so that it cannot operate unless the timing
pump is in operation.
NOTE: Refer to Appendix H. for further discussion concerning methods of
achieving the required pressure relationships within the regenerator.
ITEM 16p.(E) PASTEURIZATION AND ASEPTIC PROCESSING RECORDS, EQUIPMENT TESTS AND EXAMINATIONS
PASTEURIZATION AND ASEPTIC PROCESSING RECORDS:
All temperature and flow rate pasteurization recording charts or alternative records,
acceptable to FDA, in place of charts shall be preserved for a period of three (3) months.
Provided, that all records and recording charts for aseptic milk and milk product systems
shall be retained for a period of three (3) years. The use of such charts shall not exceed
the time limit for which they are designed. Overlapping of recorded data shall be a violation
of this Item. The following information shall be entered on the charts or other records
acceptable to FDA in place of charts as applicable:
- Batch Pasteurizers:
- (1) Date;
- (2) Number or location of recording thermometer when more than one is used;
- (3) A continuous record of the product temperature;
- (4) Extent of holding period, including filling and emptying times when required;
- (5) Reading of airspace thermometer, at the start of the holding period and at the end
of the holding period, at a given time or reference point as indicated on the chart;
- (6) Reading of indicating thermometer, at the start of the holding period, at a given
time or reference point as indicated on the chart;
- (7) Quarterly, the initials of the Regulatory Agency, or in the case of milk plants
regulated under the NCIMS HACCP Program, a qualified industry person acceptable to the
Regulatory Agency, opposite the required readings of the indicating thermometer and
airspace thermometer
- (8) Quarterly, the time accuracy of the recording thermometer, as determined by the
Regulatory Agency, or in the case of milk plants regulated under the NCIMS HACCP Program,
a qualified industry person acceptable to the Regulatory Agency;
- (9) Amount and name of the pasteurized milk or milk product, represented by each batch or
run on the chart;
- (10) Record of unusual occurrences;
- (11) Signature or initials of the operator; and
- (12) Name of the milk plant.
- HTST and HHST Pasteurizers: Recording thermometer charts shall contain all
the information specified in Subitem a. above, except (4), (5) and reference to the
airspace thermometer in (7), and in addition, shall include the following:
- (1) A record of the time during which the FDD is in the forward-flow position;
- (2) The cut-in and cut-out milk or milk product temperatures, recorded daily by the
operator, at the beginning of the run (HTST only), and initialed quarterly by the
Regulatory Agency, or in the case of milk plants regulated under the NCIMS HACCP Program,
a qualified industry person acceptable to the Regulatory Agency; and
- (3) Number (6) from above shall also be recorded immediately after a chart has been changed.
NOTE: The temperature shown on the recording thermometer chart shall be used
to determine that the required temperature for milk or milk products containing higher fat
and/or sweeteners has been achieved.
- Continuous-Flow Pasteurizers or Aseptic Processing Equipment with Magnetic Flow Meter
Based Timing Systems: Flow rate recording charts shall be capable of continuously
recording flow at the flow alarm set point and at least 19 liters (5 gallons) per minute
higher than the high flow alarm setting. Flow rate recording charts shall contain all the
information specified in Subitem a. above, except (3), (4), (5), (6), and (7),
- (1) A continuous record of the status of the high and low-flow/loss of signal alarms; and
- (2) A continuous record of the flow rate.
- Aseptic Processing Systems: Recording thermometer charts shall contain all the
information specified in Subitem a. above, except (4), (5) and reference to the airspace
thermometer in item (7). In addition these records shall include Subitem c. above, if
applicable, and the following:
- (1) A continuous record of the time during which the FDD, valve or system is in the
forward-flow position;
- (2) A continuous record of applicable regenerator pressures;
- (3) Not later than one (1) working day after the actual process, and before shipment
or release for distribution, a representative of the milk plant management, who is
qualified by suitable training or experience, shall review all processing and production
records for completeness and to ensure that the milk or milk product received the schedule
process. The records, including the recording thermometer chart(s), shall be signed or
initialed and dated by the reviewer; and
- (4) Number (6) from above shall also be recorded immediately after a chart has been changed.
- EQUIPMENT TESTS AND EXAMINATIONS:
The Regulatory Agency shall perform the indicated tests on the following instruments and
devices initially on installation; and at least once each three (3) months, including the
remaining days of the month in which the equipment tests are due; and whenever any alteration
or replacement is made which may affect the proper operation of the instrument or device.
Provided, that the holding time test shall be conducted at least every six (6) months,
including the remaining days of the month in which the equipment check is due.
On an emergency basis, pasteurization equipment may be tested and temporarily sealed by a
milk plant employee provided the following conditions are met:
- The individual applying the seal(s) is employed by the milk plant in which the seal was
removed;
- The individual has satisfactorily completed training, acceptable to the Regulatory Agency,
on test controls for pasteurization equipment;
- The individual has demonstrated the ability to satisfactorily conduct all pasteurization
control tests, in the presence of a regulatory official, within the past year;
- The individual is in possession of authorization from the Regulatory Agency to perform
these tests;
- The individual will immediately notify the Regulatory Agency of the time of the shutdown
that would necessitate the removal of the regulatory seal(s). Permission to test and seal
the equipment must be obtained for each specific incident. The individual will also notify
the Regulatory Agency of the identity of the controls affected, the cause, if known, of the
equipment failure, the repairs made and the results of testing. The individual will provide
the identity and volume of milk and milk products processed during the period that temporary
seals were applied to the Regulatory Agency;
- If regulatory tests reveal that equipment or controls are not in compliance with the
provisions of this Ordinance, all milk and milk products that were processed during
that period may be recalled;
- The Regulatory Agency or a properly trained regulatory official, commissioned by the
responsible State, of each participating non-U.S. country or political subdivision thereof,
will remove the temporary seal(s), retest the equipment and apply the regulatory seal(s)
within ten (10) working days of notification by industry; and
- No Grade "A" milk or milk products will be processed after ten (10) working days without
the affected equipment being tested and sealed by the Regulatory Agency or a properly trained
regulatory official, commissioned by the responsible State, of each participating non-U.S.
country or political subdivision thereof.
In the case of milk plants with HACCP Plans regulated under the NCIMS HACCP Program,
pasteurization and aseptic processing equipment may be tested and sealed by industry
personnel acceptable to the Regulatory Agency, if the following conditions are met:
- Test results for Pasteurization and Aseptic Processing Equipment Testing shall be
recorded on a similar document for all milk plants. (Refer to the reference in Appendix M.
for an example.)
- Industry personnel conducting the Pasteurization and Aseptic Processing Equipment Testing
must be adequately trained and must be able to demonstrate an acceptable understanding and
ability to conduct these tests to the Regulatory Agency.
- (1) Industry must physically demonstrate to the Regulatory Agency that they understand and
can perform the required equipment tests according to the requirements of this Ordinance.
- (2) The Regulatory Agency shall accept a field practical exercise, a written exam, formal
classroom training, on-the-job training or any combination of these except that, if industry
personnel do not physically demonstrate the appropriate capability to perform the tests to
the satisfaction of the Regulatory Agency, they are not acceptable for conducting such tests.
- (3) Continued training such as, but not limited to, on-the-job training with supervision or
an acceptable pasteurizer training course should be completed before they reapply for
pasteurizer equipment testing approval.
- Pasteurization and Aseptic Processing Equipment Tests shall be conducted at a frequency
not less than the requirements of this Ordinance. Industry shall have responsibility
for the performance of all required tests. At least each six (6) months the Regulatory Agency
shall physically supervise these tests. Regulatory supervised tests shall include the semi-annual
HTST and HHST tests. These six (6) month tests should be performed at a time that is mutually
convenient to all parties. Because these tests are required to support a CCP, the industry is
responsible for conducting these tests even in the absence of the regulatory official.
- Upon initial installation or extensive modification of any pasteurization and aseptic processing
equipment, tests shall be physically supervised or conducted by the Regulatory Agency.
- Sealing guidance for pasteurization equipment by industry is as follows:
- (1) All equipment that is required to be sealed within this Ordinance shall also be
sealed under the HACCP System. The sealing shall be done by a trained, qualified individual
who is acceptable to the milk plant and the Regulatory Agency; and
- (2) The Regulatory Agency may verify any equipment sealing and evaluate (accept or reject)
the skills and knowledge of the individual performing the sealing.
- During an audit, the auditor may conduct any or all of the Pasteurization or Aseptic
Processing Equipment Tests. The auditor should, through a combination of physical examination
of the equipment and a records review, satisfy themselves that the equipment is properly
installed and operated.
Table 4. Equipment Tests - Batch, HTST,
HHST and Aseptic Processing Systems (Refer to Appendix I.)
1. |
Vat, HTST, HHST, Aseptic indicating and airspace thermometers |
Temperature accuracy |
2. |
Vat, HTST, HHST, Aseptic recording thermometer |
Temperature accuracy |
3. |
Vat, HTST, HHST, Aseptic recording thermometer |
Time accuracy |
4. |
Vat, HTST, HHST, Aseptic indicating and recording thermometer |
Recording vs. Indicating thermometer |
5.1 |
HTST, HHST FDD |
Leakage pass FDD |
5.2 |
HTST, HHST FDD |
FDD freedom of movement |
5.3 |
HTST, HHST FDD |
Device assembly (single stem) |
5.4 |
HTST, HHST FDD |
Device assembly (dual stem) |
5.5 |
HTST FDD |
Manual diversion |
5.6 |
HTST, HHST FDD |
Response time |
5.7 |
HTST, HHST FDD |
Time delay (inspect) |
5.8 |
HTST, HHST FDD |
Time delay (CIP) |
5.9 |
HTST FDD |
Time delay (leak-detect flush) |
6. |
Vat leak-protector valve(s) |
Leakage |
7. |
HTST indicating thermometers |
Response time |
8. |
HTST recording thermometers |
Response time |
9.1 |
HTST pressure switches |
Regenerator pressures |
9.2.1 |
HTST, HHST, Aseptic differential pressure controllers |
Calibration |
9.2.2 |
HTST differential pressure controllers |
Regenerator pressure |
9.2.3 |
HHST and Aseptic differential pressure controllers |
Regenerator pressure |
9.3.1 |
HTST booster pump/FDD |
Inter-wiring check |
9.3.2 |
HTST booster pump/metering pump |
Inter-wiring check |
10.1 |
HTST FDD |
Temperature cut-in/cut-out |
10.2 |
HHST FDD, Aseptic divert system (indirect heat) |
Temperature cut-in/cut-out |
10.3 |
HHST FDD, Aseptic divert system (direct heat) |
Temperature cut-in/cut-out |
11.1 |
HTST holding tubes/timing pumps (except magnetic flow meter based timing systems) |
Holding time |
11.2.a |
HTST holding tubes/magnetic flow meter based timing systems |
Holding time |
11.2.b |
HTST, HHST Aseptic magnetic flow meter based timing systems |
Flow alarm |
11.2.c |
HTST, HHST, Aseptic magnetic flow meter based timing systems |
Loss of signal/low flow |
11.2.d |
HTST magnetic flow meter based timing systems |
Flow rate cut-in/cut-out |
11.2.e |
HTST magnetic flow meter based timing systems |
Time delay |
11.3 |
HHST holding tubes indirect heat |
Holding time |
11.4 |
HHST holding tubes direct injection heat |
Holding time |
11.5 |
HHST holding tubes direct infusion heat |
Holding time |
12.1 |
HHST, Aseptic systems indirect heating |
Sequence logic |
12.2 |
HHST, Aseptic systems direct heating |
Sequence logic |
13. |
HHST, Aseptic systems |
Pressure in the holding tube |
14. |
HHST, Aseptic systems using direct injection heating |
Pressure differential across injector |
15. |
Vat, HTST HHST Aseptic (all electronic controls) |
Electro-Magnetic Interference |
ITEM 17p. COOLING OF MILK AND MILK PRODUCTS
All raw milk and milk products shall be maintained at 7°C (45°F) or less until processed.
All whey and whey products for condensing shall be maintained at a temperature of 7°C (45°F)
or less; or 63°C (145°F) or greater until processed, except that acid-type whey with a titratable
acidity of 0.40% or above, or a pH of 4.6 or below, is exempted from these temperature requirements.
All pasteurized milk and milk products, except those to be cultured, shall be cooled immediately prior to
filling or packaging, in approved equipment, to a temperature of 7°C (45°F) or less, unless
drying is commenced immediately after condensing. All condensed whey and whey products shall be cooled
during the crystallization process to 7°C (45°F) or less within 48 hours of condensing, including
the filling and emptying time, unless filling occurs above 57°C (135°F), in which case, the 48
hour time period begins when cooling is started.
All pasteurized milk and milk products shall be stored at a temperature of 7°C (45°F) or less
and maintained thereat until further processed.
Every refrigerated room or tank in which milk or milk products, whey and whey products, and condensed
milk and milk products are stored, shall be equipped with an accurate indicating thermometer.
On delivery vehicles, the temperature of milk and milk products shall not exceed 7°C (45°F).
Aseptically processed milk and milk products to be packaged in hermetically sealed containers shall be
exempt from the cooling requirements of this Item.
PUBLIC HEALTH REASON
When milk and milk products are not cooled within a reasonable time, after being received at the milk
plant, its bacterial content will be materially increased. The same reasoning applies to cooling the
milk and milk products after pasteurization, unless drying is commenced immediately after condensing.
ADMINISTRATIVE PROCEDURES
This Item is deemed to be satisfied when:
- All raw milk and milk products are maintained at 7°C (45°F) or less until processed,
except that acid-type whey with a titratable acidity of 0.40% or above, or a pH of 4.6 or below,
is exempt from these temperature requirements.
- All whey and whey products for condensing are maintained at a temperature of 7°C (45°F)
or less; or 63°C (145°F) or greater until processed, unless surge tanks are used and emptied,
cleaned and sanitized after each 4 hours of use or less.
- All pasteurized milk and milk products, except those to be cultured, are cooled immediately in
approved equipment prior to filling or packaging to a temperature of 7°C (45°F) or less,
unless drying is commenced immediately after condensing.
- All pasteurized milk and milk products shall be stored at a temperature of 7°C (45°F)
or less and be maintained thereat until further processed. If surge tanks or balance tanks are
used between the evaporator and the drier, such tanks shall hold the product at a temperature of
66°C (150°F) or more, or shall be completely emptied and cleaned after each 4 hours of
operation or less.
- All condensed whey and whey products are cooled during the crystallization process to 7°C
(45°F) or less, within 48 hours of condensing including the filling and emptying time,
unless filling occurs above 57°C (135°F), in which case, the 48 hour time period begins
when cooling is started.
- Each refrigerated room in which milk and milk products are stored, except aseptically
processed milk and milk products, is equipped with an indicating thermometer that complies with
the applicable specifications of Appendix H. Such thermometer shall be located in the warmest
zone of the refrigerated room.
- Each storage tank shall be equipped with an indicating thermometer, the sensor of which shall
be located to permit the registering of the temperature of the contents when the tank contains
no more than twenty percent (20%) of its calibrated capacity. Such thermometer shall comply with
the applicable specifications of Appendix H.
- On delivery vehicles, the temperature of milk and milk products shall not exceed 7°C (45°F).
- All surface coolers comply with the following specifications:
- The sections of open-surface coolers shall be so installed as to leave a gap of at least
6.4 millimeters (0.25 inches) between the header sections to permit easy cleaning.
- Where header ends are not completely enclosed within the cooler covers, condensation or
leakage from the headers shall be prevented from entering the milk or milk product by so
shaping the exposed header faces, above and below all gaps, that condensation is directed
away from the tubes, and by using deflectors at the bottom of the headers; or by shortening
the bottom of the headers; or by shortening the bottom trough; or by some other approved
method.
- The location of supports of cooler sections shall prevent condensation and leakage from
entering the milk or milk product.
- All open-surface coolers shall be provided with tight-fitting shields that protect the
milk and milk product from contamination by insects, dust, drip, splash or manual contact.
- Recirculated cooling water, which is used in coolers and heat exchangers, including
those systems in which a freezing point depressant is used, is from a safe source and
protected from contamination. Such water shall be tested semiannually and shall comply
with the Bacteriological Standards of Appendix G. Samples shall be taken by the Regulatory
Agency and examination shall be conducted in an Official Laboratory. Recirculated cooling
water systems, which become contaminated through repair work or otherwise, shall be properly
treated and tested before being returned to use. Freezing point depressants and other
chemical additives, when used in recirculating systems, shall be non-toxic under conditions of use.
Recirculated cooling water contained in corrosion resistant, continuous piping, with no
joints or welds, which fail to meet applicable ASME or equivalent standards in the
non-potable water contact areas, may be considered to be protected from contamination,
as required above, when cooled by non-potable water flowing over the exterior of the
piping, within open evaporative type cooling tower. In these systems, the recirculated
cooling water piping shall be properly maintained and shall be installed so that it is
at least two (2) pipe diameters above the flood rim of the cooling tower.
ITEM 18p. BOTTLING, PACKAGING AND CONTAINER FILLING
Bottling, packaging and container filling of milk and milk products shall be done at the
place of pasteurization in a sanitary manner by approved mechanical equipment.10
For milk plants that dry milk products, these dry milk products shall be packaged in new
containers, which protect the contents from contamination, and after packaging, shall be
stored in a sanitary manner.
For milk plants that condense and/or dry milk or milk products, these condensed and dry
milk products may be transported in sealed containers in a sanitary manner from one (1)
milk plant to another for further processing and/or packaging.
Condensed and dry milk product packaging containers shall be stored in a sanitary
manner.
PUBLIC HEALTH REASON
Manual bottling, packaging and container filling is very apt to result in the exposure
of the milk and milk products to contamination, which would nullify the effect of pasteurization.
The transfer of milk and milk products from the place of pasteurization to another milk plant for
bottling, packaging or container filling may subject the pasteurized milk or milk product to
unnecessary risks of contamination. Reuse of packages for dry milk products is likely to result
in contamination of the dry milk products.
ADMINISTRATIVE PROCEDURES11
This Item is deemed to be satisfied when:
- All milk and milk products, including concentrated (condensed) milk and milk products,
are bottled and packaged at the milk plant where final pasteurization is performed. Such
bottling and packaging shall be done without undue delay following final pasteurization.
- All bottling or packaging is done on approved mechanical equipment. The term "approved
mechanical equipment" shall not be interpreted to exclude manually operated machinery, but
is interpreted to exclude methods in which the bottling and capping devices are not integral
within the same system.
- All pipes, connections, defoaming devices and similar appurtenances shall comply with
Items 10p and 11p of this Section. Milk and milk products from continuous defoamers are not
returned directly to the filler bowl.
- Bottling or packaging machine supply tanks and bowls are equipped with covers that
are constructed to prevent any contamination from reaching the inside of the filler
tank or bowl. All covers shall be in place during operation.
- A drip deflector is installed on each filler valve. Drip deflectors shall be
designed and adjusted to divert condensation away from the open container.
- Container in-feed conveyors to automatic bottling or packaging machines have
overhead shields to protect the bottles or packages from contamination. These
shields shall extend from the bottle washer discharge to the bottle feed-star,
or in the case of single-service packaging machines, from the forming unit discharge
to the filling unit and from the filling unit to the closure unit. Overhead shields
shall be required on can in-feed conveyors when the cans are fed to the filler with
the covers off.
- Container coding/dating devices are designed, installed and operated such that
the coding/dating operations are performed in a manner that open containers are not
subjected to contamination. Shielding shall be properly designed and installed to
preclude the contamination of open containers.
- Container fabricating materials, such as paper stock, foil, wax, plastic, etc.,
are handled in a sanitary manner and protected against undue exposure during the
package assembly operation.
- Bottling and packaging machine floats are designed to be adjustable without
removing the cover.
- The filler pipe of all bottling and packaging machines have a diversion apron
or other acceptable device, as close to the filler bowl as possible, to prevent
condensation from entering the inside of the filler bowl.
- Filling cylinders on packaging machines are protected from contamination by
overhead shields. When lubricants are used on filler pistons, cylinders or other milk
or milk product-contact surfaces, the lubricant shall be food-grade and applied in a
sanitary manner.
- In the case of aseptic processing systems, the milk and milk product shall be
aseptically filled into sterilized containers and hermetically sealed in conformance
with the applicable requirements of 21 CFR 113.
For milk plants that condense and/or dry milk or milk products, the following shall apply:
- The filling of condensed and dry milk product containers is done by mechanical
equipment. The term "mechanical equipment" shall not be interpreted to exclude
manually operated equipment.
- All pipes, connections and similar appurtenances comply with Items 10p and 11p.
- Filling devices are constructed so as to prevent any contamination from reaching
the product. Covers of filling devices, if used, shall be in place during operation.
- Packaged dry milk and milk products are stored and arranged so as to be easily
accessible for inspection and to permit cleaning of the storage room.
- All condensed and dry milk product containers are filled in a sanitary manner by
methods which:
- Protect the product from airborne contamination;
- Prevent manual contact with condensed and dry milk product-contact surfaces; and
- Minimize manual contact with the product.
- All final containers for dry milk products shall be new and of the single-service
type and sufficiently substantial to protect the contents from impairment of quality
with respect to sanitation, contamination and moisture, under customary conditions of
handling, transportation, and storage.
- If portable storage bins are used, they comply with the applicable provisions of
Items 10p and 11p.
- Containers are closed immediately after being filled.
ITEM 19p. CAPPING, CONTAINER CLOSURE AND SEALING AND DRY MILK PRODUCT STORAGE
Capping, closing or sealing of milk and milk product containers shall be done in a sanitary
manner by approved mechanical capping, closing and/or sealing equipment. The cap or closure
shall be designed and applied in such a manner that the pouring lip is protected to at least
its largest diameter and, with regard to fluid product containers, removal cannot be made
without detection.
PUBLIC HEALTH REASON
Improper closing or sealing and hand capping exposes the milk or milk product to contamination.
A cover extending over the pouring lip of the container protects it from contamination during
subsequent handling, and prevents the sucking back into the bottle, by temperature contraction,
of any contaminated liquid on the cap, including milk or milk product that has been forced out
by temperature expansion and may have become contaminated. Caps or closures that are applied in
such a manner that they cannot be removed without detection help to assure the consumer that
the milk and milk products have not been contaminated after packaging.
ADMINISTRATIVE PROCEDURES12
This Item is deemed to be satisfied when:
- The capping, closing or sealing of milk and milk product containers is done in a sanitary
manner on approved mechanical capping, closing and/or sealing equipment. The term "approved
mechanical capping, closing and/or sealing equipment" shall not exclude manually operated
machinery. Hand capping shall be prohibited. Provided, that if suitable mechanical equipment,
for the capping or closing of container(s) of 12.8 liters (3 gallons) or more is not available,
other methods which eliminate all possibility of contamination may be approved by the Regulatory
Agency.
- All mechanical capping, closing or sealing mechanisms are designed to minimize the need for
adjustment during operation.
- Bottles and packages that have been imperfectly capped or closed are emptied immediately into
approved sanitary containers. Such milk or milk products shall be protected from contamination,
maintained at 7°C (45°F) or less, except dry milk products, and subsequently repasteurized
or discarded.
- All caps and closures are designed and applied in such a manner that the pouring lip is
protected to at least its largest diameter and, with respect to fluid milk and milk product
containers, removal cannot be made without detection. Single-service containers are so
constructed that the product and the pouring and opening areas are protected from
contamination during handling, storage and when the containers are initially opened.
- All caps and closures are handled in a sanitary manner. The first cap from each tube,
the first lap(s) from each roll of cap or cover stock and the first sheet of parchment
or cover paper shall be discarded. The subsequent use of loose caps that are left in the
cappers at the end of an operating period, after removal from the cap tubes, shall be a
violation of this Item, provided, that loose plastic caps and closures supplied by the
manufacturer in plastic bags may be returned to storage in a protective wrap if removed
from a hopper/descrambler immediately after a production run. Plastic caps and closures
remaining in the chute between the hopper and the capping device shall be discarded.
- All dry milk products are stored in a sanitary manner.
ITEM 20p. PERSONNEL - CLEANLINESS
Hands shall be thoroughly washed before commencing milk plant functions and as often as
may be required to remove soil and contamination. No employee shall resume work after
visiting the toilet room without thoroughly washing their hands. All persons, while engaged
in the handling, processing, pasteurization, storage, transportation, or packaging of milk
or milk products, containers, utensils and equipment shall wear clean outer garments. All
persons, while engaged in the processing of milk or milk products, shall wear adequate hair
coverings and shall not use tobacco.
PUBLIC HEALTH REASON
Clean clothing and clean hands, including clean fingernails, reduce the possibility of milk or
milk products, containers, utensils and equipment becoming contaminated.
ADMINISTRATIVE PROCEDURES
This Item is deemed to be satisfied when:
- Hands are thoroughly washed before commencing milk plant functions and as often as may be
required to remove soil and contamination.
- Each employee washes their hands following a visit to the toilet room and prior to resuming
work.
- All persons while engaged in the handling, processing, pasteurization, storage, transportation,
or packaging of milk or milk products containers, utensils, and equipment wear clean outer garments.
- The use of tobacco products is prohibited in all rooms in which milk and milk products are handled,
processed or stored, or in which milk or milk product containers, utensils and/or equipment are washed.
These rooms shall include, but are not limited to, the receiving, processing, packaging, milk and milk
product storage, cooling and dry storage ingredients, single-service article storage and container/utensil
wash-up areas. Any person engaged in the processing of milk or milk products wears adequate hair coverings.
- Specially provided clean rubbers or boot covers, clean coveralls, and white cap, clean cloth or paper,
are worn whenever it is necessary to enter the drying chambers. Such articles of clothing are stored in
such a manner as to be protected from contamination. Boot covers, which have come into contact with areas
other than those within the dryer, are not considered clean.
ITEM 21p. VEHICLES
All vehicles used for the transportation of pasteurized milk and milk products shall be constructed
and operated so that the milk and milk products are maintained at 7°C (45°F) or less and are
protected from contamination. Milk tank cars, milk tank trucks, and portable shipping bins shall not
be used to transport or contain any substances that may be toxic or harmful to humans.
PUBLIC HEALTH REASON
Milk and milk products, as well as empty containers, should be protected against contamination at all times.
ADMINISTRATIVE PROCEDURES
This Item is deemed to be satisfied when:
- All vehicles are kept clean.
- Material that is capable of contaminating milk or milk products is not transported with milk or milk
products.
- Milk and milk products, except dry milk products, are maintained at 7°C (45°F) or less.
- The operation of milk tank cars and shipping bins comply with the following provisions:
- Milk and milk products shall be conducted to and from tank cars or shipping bins only through sanitary
conveying equipment. Such equipment shall be capped or otherwise protected when not in use.
- Inlets and outlets of shipping bins shall be provided with tight-fitting dust caps or covers.
- Facilities shall be provided for the adequate washing and sanitizing of shipping bins, piping, and
accessories at all milk plants receiving or shipping milk or milk products in shipping bins.
- Shipping bins shall be cleaned at the receiving milk plant immediately after being emptied. The clean
shipping bins shall be sanitized at the shipping milk plant before loading. Milk tank trucks, which must
make more than one trip while unloading a tank car, need not be cleaned and sanitized after each time they
are emptied.
- Piping connections and pumps used with shipping bins shall be cleaned and sanitized after each use.
- The doors of tank cars and covers of shipping bins are sealed with a metal seal immediately after loading.
The seal shall remain unbroken until the contents are delivered to the consignee. Contents of the tank car or
shipping bin shall be labeled as prescribed in Section 4 by means of a tag attached to the tank car or shipping
bin.
- Vehicles have fully enclosed bodies with well-fitted, solid doors.
ITEM 22p. SURROUNDINGS
Milk plant surroundings shall be kept neat, clean and free from conditions which might attract or harbor
flies, other insects and rodents or which otherwise constitute a nuisance.
PUBLIC HEALTH REASON
The surroundings of a milk plant should be kept neat and clean to prevent attracting rodents, flies and
other insects, which may contaminate the milk or milk products. Insecticides and rodenticides, not approved
for use in milk plants, or approved insecticides and rodenticides, not used in accordance with label
recommendations, may contaminate the milk or milk products processed by the milk plant.
ADMINISTRATIVE PROCEDURES
This Item is deemed to be satisfied when:
- There is no accumulation of trash, garbage or similar waste in areas adjacent to the milk plant. Waste
material stored in suitable covered containers shall be considered in compliance.
- 2. Driveways, lanes and areas serving milk plant vehicular traffic are graded, drained and free from pools
of standing water.
- Outdoor areas for milk tank truck unloading are constructed of smooth concrete or equally impervious
material, properly sloped to drain and equipped with trapped drains of sufficient size.
- Only insecticides and rodenticides approved for use by the Regulatory Agency and/or registered with
EPA shall be used for insect and rodent control.
- Rooftops are kept clean of dry milk or milk products, which may accumulate and contribute to unsanitary
conditions.
NOTE: Appendix M. provides a source for milk plant, receiving station and transfer station
inspection forms, which summarize the applicable sanitation requirements of this Section.