Safety, Occupational Health, and Jobsite Hazards
Start with the hazard, not the task
Sprinkler work is overhead work, hot work, and heavy-material work all at once. Build every task around the OSHA Focus Four: falls, struck-by, caught-in/between, and electrocution. Fall protection is required at 6 ft in construction (4 ft in general industry) - know which rule set applies before you answer. Extension ladders set at a 4:1 slope and extend 3 ft above the landing.
Hot work and energy control
Cutting, grinding, and brazing require a hot work permit, a fire watch during the operation and for at least 60 minutes after completion, and removal of combustibles from the area. Before working on a fire pump, jockey pump, or control panel, apply lockout/tagout and verify zero energy.
Health hazards the questions love
Coring concrete releases respirable silica - use water or vacuum attachment plus a respirator. Disturbing old paint or solder can expose you to lead. Solvent cements and fluxes need ventilation and SDS review under GHS. Excavations 5 ft or deeper need a protective system; confined spaces need an entry permit.
Traps
- Confusing the 4 ft and 6 ft fall thresholds.
- Assuming a fire watch ends when the torch is off.
- Skipping eye protection under a hard hat (both are required when either is).
- Treating housekeeping as optional; tripping hazards are the most common citation.
Worked example
A fitter sets a 20 ft extension ladder. Base distance = 20 ÷ 4 = 5 ft from the wall, with 3 ft of ladder above the landing. Separately, the crew must work near a 13.8 kV overhead line: OSHA minimum approach is 10 ft for lines up to 50 kV - if you cannot maintain it, the line must be de-energized and grounded.