MIL-HDBK-1025/10
to be Used in Live-Line Working covers the live-line tools used to hold, move, operate, and test
equipment. Tools are only as safe as their continued care and inspection make them. Try to
always use a fiberglass tool as it is impervious to oil-borne materials and solvents, is stronger, and
is a better insulator than wood. Live-line tools should be wiped clean and visually inspected
before use each day. Do not use tools in rain or heavy fog, except in an emergency where
directed by your foreman/lead electrician. In any case, never use tools when weather conditions
allow formation of rivulets of water along the tool. Hang tools on hand lines or approved tool
hangers, never on conductors or ground (bond) wires.
4.4.2.4 Other Safety Requirements. Use of energy hazard detection devices,
equipment for positioning workers safely (aerial lift bucket trucks and fall protection), and
temporary grounding cables are covered in later sections. Always use fiberglass ladders around
electrical lines.
General Safety Observances. Observing presite job requirements, avoiding
4.5
prohibited actions, and reporting unsafe worker indications as given in Table 4 will prevent
personnel injury and equipment damage. Table 5 summarizes significant unsafe actions and
conditions.
Worker/Crew Responsibilities. All personnel are responsible for safety at all
4.6
times, for prompt mishap handling, and conducting before each job a program in accordance with
OSHA standard 29 CFR 1910.269(c), Job Briefing.
4.6.1 Levels of Responsibility. Operation and maintenance of electrical distribution
systems are a single group responsibility. The same personnel will frequently perform both
functions. Safety accountability duties are given in Table 6.
4.6.2 Qualifications. Qualifications for electrical workers are normally established
locally. Workers are classified as Qualified or Unqualified.
4.6.2.1 Qualified Workers. Persons who by training and demonstration are familiar with
the skills and techniques for: (1) distinguishing exposed live parts from other parts of electric
equipment; (2) determining the nominal voltage of exposed live parts; and (3) maintaining
minimum clearance distances corresponding to the voltages to which that person will be exposed.
4.6.2.2 Unqualified Workers. Persons not meeting the requirements for Qualified
Worker. However, to be on the job these persons should be trained in all electrically related
practices that are necessary for their safety.
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