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2.12.9 SAFETY SHOES, HATS, AND GLASSES
Safety shoes, hard hats, and safety glasses worn by electrical workers shall meet the requirements
of ANSI Z41, ANSI Z89.1, and ANSI Z87.1 specifications, respectively.
2.13 WORK PRACTICES
The safe maintenance or repair of any electrical apparatus requires a thorough knowledge of
engineering, safety, and repair techniques, and personnel should be familiar with the particular
features of the apparatus involved. Only qualified workers should do such work and these workers
should refer to the manufacturer's testing procedures, warnings, and instructions on how to service
such equipment.
2.13.1 TRAINING
Qualified workers shall be knowledgeable and trained in safety-related work practices, safety
procedures, and other requirements that pertain to their respective job assignments. Employees shall
not be permitted to work in an area where they are likely to encounter an electrical hazard unless they
have been trained to recognize and avoid these hazards. (See Section 2.8.)
2.13.1.1 LIVE PARTS
Live parts that an employee may be exposed to shall be deenergized before the employee works on
or near them, unless it can be demonstrated that deenergizing introduces additional or increased
hazards or is infeasible because of equipment design or operational limitations. (See Section 2.1.1.)
Examples of infeasibility because of equipment design or operational limitations are as follows:
1. Tests
2. Adjustments
3. Troubleshooting
4. Interruption of life supports
5. Removal of lighting in an area
6. Deactivation of alarm systems
7. Shutdown of ventilation in hazardous locations
8. Shutdown of a process or system creating a greater hazard.
Live parts that operate at less than 50 volts to ground need not be deenergized if there will be no
increased exposure to electrical burns or to explosion due to electrical arcs [See 29 CFR 1910.333(a)(1)].
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