f. Insufficient testing equipment, protective apparel and equipment, and safety
forms and tags.
6.2.5 Installation Precautions. All apparatus and lines should be legibly
marked for identification and to match diagrams and schematics before any work is done.
Markings should not be placed on removable parts. Where permanent markings are not
provided, temporary markings may be utilized on the understanding that follow-up
permanent markings will be provided for all devices and circuits operating at voltage levels
Checklist for Safety
The following minimum requirements are mandatory to ensure
worker or equipment safety.
6.3.1 Communication Channel Availability. Some method of
communication to summon emergency personnel or medical assistance should be provided
and should be functional through the period during which work is performed.
6.3.2 Lighting Level. The lighting level will be sufficient for safe work.
Temporary self-contained lighting systems will be provided where normal natural or
installed lighting is not sufficient, available, or safe.
6.3.3 Working Period. Normally no worker will work more than a standard 8-
hour period with suitable breaks. Under emergency conditions a maximum of 12 hours
may be necessary but the work period will be preceded and followed by a minimum of 8
6.3.4 Personnel Requirements. On all cases of specialized work a qualified
person will provide technical direction. No one should work alone. Workers should be
qualified to do the work in question; should be fully cognizant of all safety procedures and
equipment conditions; and should be alert and in good health.
6.3.5 Equipment Preparation. Check that all control power has been de-
energized and all stored-energy mechanisms have been discharged. All stationary (bolted
or plug-in) nondrawout type circuit breakers should be de-energized on both the line and
load side. All drawout circuit breakers should be checked to be sure that interlocks
(which prevent the circuit breaker from being withdrawn in the closed position) have not
been defeated or bypassed.
Testing Safety. Comply with the requirements of OSHA standard 29
CFR 1926.269(o), Testing and Test Facilities. When performing electrical tests at any