Fire Sprinkler Fitters

Sprinkler fitters spend most of the day on lifts and ladders, hanging pipe overhead and drilling into concrete and steel.

• Construction

Top hazards

• Falls from scissor lifts, boom lifts and ladders
• Crushed between a lift and overhead structure
• Shoulder and neck strains from overhead work
• Silica from drilling concrete for hangers
• Pipe threaders and roll groovers catching hands or clothing
• Pressure test failures

Key practices

• Follow lift rules; watch overhead clearance. See Scissor Lifts.
• Use pipe lifts and hoists for heavy mains.
• Use drills with dust extraction overhead. See Rotary Hammers.
• Keep hands clear on threaders and groovers; use foot switches.
• Clear the area and follow procedures for hydrostatic tests; never pneumatically test without approval.

Overhead work and your body

Sprinkler fitters spend hours with arms raised, which strains shoulders and necks over time. Use pipe jacks and lifts to hold pipe, position the lift so work is at chest height, use drills with extension handles or overhead drilling rigs, and stretch during the day. See Lifting & Ergonomics.

Working from lifts

• Pipe often sticks out past the lift basket. Watch for coworkers and obstacles when moving.
• Keep pipe and fittings secured in the basket so they can’t roll out.
• Look up before raising; crushing between the lift and structure is a leading cause of lift deaths. See Aerial Lifts.

Systems in occupied buildings

When working on existing systems, the building’s fire protection may be out of service. Follow the owner’s impairment procedure: notify the fire department and alarm company, post a fire watch if required, and restore the system as soon as possible. See NFPA 241.

Draining and filling

• Make sure the system is drained and isolated before cutting in. Old pipe may contain black, corrosive water.
• Dry systems and fire pumps can have stored air pressure. Bleed it down.
• Antifreeze systems contain chemicals; follow the SDS and disposal rules.

Job checklist

• Lift inspected; overhead obstructions noted
• Dust extraction on hammer drills
• Threader and groover guards and foot switches working
• System drained, isolated and impairment notices given
• Test area cleared before hydrostatic tests

Last updated: October 1, 2026