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3320
Temporary Work Permits |
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1.0
Purpose
Certain hazardous, recurring
activities performed at Jefferson Lab are restricted and only undertaken when
authorized by a temporary work permit.
These work permits ensures that all hazards have been considered and
associated risks have been acknowledged and mitigated.
The following activities have
been identified as requiring a temporary work permit prior to execution:
·
Permit-Required Confined Space Entry
· Energized Electrical Work
·
Fire Hazardous Work
· Radiological Work
· Dig/Blind Penetration
2.0
Scope
Because of the severe consequences which could occur during the above noted activities, they have been provided for in separate documents as noted above. These procedures, as outlined, provide for a thorough hazard evaluation.
3.0
Responsibilities
Responsibilities are outlined
within the associated documents.
4.0
Referenced Documents
4.1
Confined Space
Entry Permit (See
ES&H Manual Chapter 6160 Confined Space Entry)
According to OSHA a permit-required
confined space (PRCS) has the
following characteristics:
· Sufficient space for a person to enter and perform work;
· Limited/restricted means for entering/exiting;
· Not designed for continuous occupancy.
And one or more of the following criteria:
· Contains, or has the potential to contain, a hazardous atmosphere;
· Contains a material with the potential for engulfing a person or hindering quick escape;
· Internal configuration can trap a person or lead to asphyxiation;
·
Entails a safety or health risk that has
been determined to be RC >2 and requires a formal Task Hazard Analysis and associated work
control document.
At
Jefferson Lab these areas require a Confined-Space
Entry Permit prior to entry.
See ES&H Manual
Chapter 6160 Confined Space Entry for
guidance.
4.2
Energized Electrical
Work (See ES&H Manual Chapter 6220 AC Electrical Equipment Safe Work Policy)
Service
work performed on AC electrical power distribution system at Jefferson Lab with
equipment in an energized state requires an approved Energized Electrical
Work Permit as described in ES&H Manual Chapter 6220 AC Electrical Equipment Safe Work Policy. The permit establishes the justification for
working on “live” equipment, the required training qualifications of the
workers, and any unusual aspects of the work.
See ES&H
Manual Chapter 6220 Appendix T1
Energized Electrical Work Permit (EEWP). Note: Mode 3 work on Class II or above
electrical power distribution equipment requires the approval of the Laboratory
Director.
4.3
Hot Work Permit
(See ES&H Manual Chapter
6900 Appendix T1 Fire Protection: Hot Work Permit)
Work that presents an inherent risk
of creating a fire is restricted at Jefferson Lab. Open-flame and spark-producing activities such
as welding or soldering, are authorized by a Hot Work
Permit. See ES&H Manual Chapter 6900 Appendix T1 Fire Protection: Hot Work
Permit.
4.4
Radiological Work (See Jefferson Lab Radiological Control Supplement)
Activities which present the
possibility of significant exposure to ionizing radiation are restricted at
Jefferson Lab. Such activities are
allowed only after careful analysis and planning to minimizing personnel exposure. Exposure must be As Low As Reasonably Achievable (ALARA).
Jefferson Lab’s Radiation Control
Group initiates and authorizes Radiological Work
Permits. It informs workers
of entry requirements and radiological conditions in the work area, and
provides mechanisms to reduce worker exposure.
A Radiological Work
Permit is required for any of the following
situations:
·
The
anticipated radiation dose rate to the trunk of a worker's body – usually
measured 30 cm (1 ft) from the work piece – is greater than 25 mR/hr
·
The
total estimated dose to a worker exceeds 25 mrem
·
The
workpiece measures 250 mR/hr
or greater on contact
·
Entry
into a posted contamination, High Radiation
Area, or Airborne Radioactivity Area is necessary
Contact Radiation Control at
x7551 (876-1743 cell phone) to initiate a Radiological Work Permit.
4.5
Dig/Blind Penetration Permit
(See
Facilities Management’s Excavations and Blind Penetrations into
Walls & Floors)
Excavation, digging, boring into soil; drilling or cutting blind penetrations into floors and wall; and demolition at Jefferson Lab is performed only after utilities have been located and marked by a competent person.
If
you have work that requires digging or drilling into soil or blind penetration
into walls or floors with tools or fasteners, contact Facilities Management
(x7400) to complete a Dig/Blind
Penetration Permit.
5.0
Revision Summary
Revision 0.1 – 03/23/12 – Update to Web Chapter format.
Revision 0 – 10/05/09 – Update to reflect current laboratory operations.
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ISSUING
AUTHORITY |
TECHNICAL POINT-OF-CONTACT |
APPROVAL
DATE |
EXPIRATION
DATE |
REV. |
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ESH&Q Division |
10/05/09 |
10/05/12 |
0.1 |
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