Subparts I–K: Tools, Welding, and Electrical
Subpart I: tools
1926.300 requires tools to be guarded and in safe condition. Hand tools must be maintained (1926.301); power tools need proper switches and guards (1926.302); abrasive wheel guards, work rests, and tongue guards are specified in 1926.303. Jacks must be rated and stable (1926.305).
Subpart J: welding and cutting
1926.350 covers gas cylinders: secure them upright, keep caps on when not in use, and keep fuel gas and oxygen separated. 1926.351 covers arc welding; 1926.352 requires fire prevention, including removing combustibles and using a fire watch where needed. 1926.353 requires ventilation and protection from fumes; 1926.354 covers confined spaces.
Subpart K: electrical
1926.400–1926.449 cover wiring, grounding, temporary power, and lockout/tagout. Temporary receptacles must have GFCI protection or an assured equipment grounding conductor program (1926.404(b)(1)). 1926.416 requires protection from electrical hazards; 1926.417 requires lockout/tagout of circuits and equipment. Maintain 10 feet of clearance from unguarded power lines up to 50 kV, with greater distance at higher voltage.
Worked example
A crew sets up a temporary 120-volt receptacle for a circular saw. The receptacle lacks GFCI protection, so the employer must either install a GFCI or use an assured equipment grounding conductor program with recorded inspections and tests. A damaged extension cord must be removed from service.
Traps
A GFCI is not the only compliant option for temporary power-the assured grounding program is an alternative. Welding fire watches are required when combustibles cannot be removed and can be ignited. Lockout/tagout is not just a tag; energy must be isolated and verified.