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Hazard Prevention and Control
After hazards are identified, how can they be prevented and controlled?
After detection, all current and potential hazards must be prevented, corrected or controlled. Systems used to prevent and control
hazards include:
 Engineering Controls
The first and best strategy is to control the hazard at its source. Engineering
controls do this, unlike other controls that generally focus on the employee
exposed to the hazard. The basic concept behind engineering controls is
that, to the extent feasible, the work environment and the job itself
should be designed to eliminate hazards or reduce exposure to hazards.
Engineering controls can be simple in some cases. They are based on the following
principles:
- If feasible, design the facility, equipment, or process to remove the hazard or substitute something that is not hazardous.
- If removal is not feasible, enclose the hazard to prevent exposure in normal operations.
- Where complete enclosure is not feasible, establish barriers or local ventilation to reduce exposure to the hazard in normal operations.
Safe Work Practices
Safe work practices include your company’s general workplace rules and other
operation-specific rules. For example, even when a hazard is enclosed,
exposure can occur when maintenance is necessary. Through established
safe work practices, employee exposure to hazards can be further reduced.
Depending on the type of industry and the operations, work practices for specific
OSHA standards or to recognized hazards may be required. Some of these
specific areas include:
- Respiratory Protection [1910.134].
- Lockout/Tagout [1910.147].
- Confined Space Entry [1910.146].
- Hazard Communication [1910.1200, 1926.59].
- Blood borne Pathogens [1910.1030].
- Hearing Conservation [1910.95].
- Laboratory Chemical Hygiene [1910.1450].
This list is not all-inclusive. Refer to the specific OSHA standard for information
and guidance on the required elements for these individual programs.
 Administrative Controls
While safe work practices can be considered forms of administrative controls, OSHA
uses the term administrative controls to mean other measures aimed at
reducing employee exposure to hazards. These measures include additional
relief workers, exercise breaks and rotation of workers. These types of
controls are normally used in conjunction with other controls that more
directly prevent or control exposure to the hazard.
Personal Protective Equipment (PPE)
When exposure to hazards cannot be engineered completely out of normal operations or
maintenance work, and when safe work practices and other forms of administrative
controls cannot provide sufficient additional protection, a supplementary
method of control is the use of protective clothing or equipment. This
is collectively called personal protective equipment, or PPE. PPE may
also be appropriate for controlling hazards while engineering and work
practice controls are being installed. For specific OSHA requirements
on personal protective equipment, see OSHA’s standard,
1910 Subpart I.
PPE Hazard Assessment and Training
The basic element of any management program for PPE should be an in depth evaluation
of the equipment needed to protect against the hazards at the workplace.
The evaluation should be used to set a standard operating procedure
for personnel, then train employees on the protective limitations of
the PPE, and on its proper use and maintenance.
Using PPE requires hazard awareness and training on the part of the user. Employees
must be aware that the equipment does not eliminate the hazard. If the
equipment fails, exposure will occur. To reduce the possibility of failure,
equipment must be properly fitted and maintained in a clean and serviceable
condition.
Systems to Track Hazard Correction
An essential part of any safety and health system is the correction of hazards that
occur despite the overall prevention and control program. For larger sites,
documentation is important so that management and employees have a record
of the correction.
Many companies use the form that documents the original discovery of a hazard to track
its correction. Hazard correction information can be noted on an inspection
report next to the hazard description. Employee reports of hazards and
reports of accident investigation should provide space for notations about
hazard correction.
Frequently, companies will computerize their hazard tracking system which can be as
simple as adding a few items to an existing database, such as work order
tracking.
 Preventive Maintenance Systems
Good preventive maintenance plays a major role in ensuring that hazard controls continue
to function effectively. It also keeps new hazards from arising due to
equipment malfunction.
Reliable scheduling and documentation of maintenance activity is necessary. The
scheduling depends on knowledge of what needs maintenance and how often.
The point of preventive maintenance is to get the work done before repairs
or replacement is needed. Documentation is not only a good idea, but
is a necessity in larger companies. Certain OSHA standards also require
that preventive maintenance be done. For example, a preventive maintenance
program is required for overhead and gantry cranes, [29 CFR 1910.179].
Emergency Preparation
During emergencies, hazards appear that normally are not found in the workplace. These may
be the result of natural causes (floods, tornadoes, etc.), events caused
by humans but beyond control (train or plane accidents, terrorist activities,
etc.), or within a firm’s own systems due to unforeseen circumstances
or events.
You must become aware of possible emergencies and plan the best way to control
or prevent the hazards they present. Some of the steps in emergency planning
include:
- Survey of possible emergencies;
- Planning actions to reduce impact on the workplace;
- Employee information and training;
- Emergency drills as needed.
Medical Programs
A company’s medical program is an important part of the safety and health system.
It can deliver services that prevent hazards that can cause illness and
injury, recognize and treat illness and injury, and limit the severity
of work-related injury and illness. The size and complexity of a medical
program will depend on many factors, including the:
- Type of processes and materials and the related hazards,
- Type of facilities,
- Number of workers,
- Characteristics of the workforce, and
- Location of each operation and its proximity to a health care facility.
Medical programs consist of everything from a basic first aid and CPR response for sophisticated
approaches for the diagnosis and resolution of ergonomic problems. Depending
on the size of the site, this may be in-house or through arrangements
made with a local medical clinic. Whatever the type of medical program,
it is important to use medical specialists with occupational health training.
[See OSHA standard 1910.151(b)
for first aid requirements. Also, the Blood borne Pathogens Standard, has
requirements to protect employees who administer first aid and CPR [1910.1030].]
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