Fire Watch Procedures Toolbox Talk

Fire watch is required when hot work creates sparks, heat, slag, flame, or other ignition hazards. Welding, cutting, grinding, torch work, soldering, roofing, and heat-producing tools can start fires in trash, dust, insulation, packaging, wood, plastic, wall cavities, or nearby materials.

This talk focuses on what a fire watch does before, during, and after hot work, how to control ignition risks, and when to stop work because fire protection is not ready.

Why This Matters

• Sparks and slag can travel farther than expected and land in cracks, gaps, lower levels, or hidden spaces.
• Fires can start after hot work is finished if smoldering material is missed.
• A trained fire watch can catch smoke, heat, or small fires before they spread.
• Combustible materials, flammable vapors, dust, and temporary protection can ignite quickly.
• Clear communication and emergency access help protect workers, property, and nearby trades.

Common Hazards

• Starting hot work without a permit, fire watch, extinguisher, or area inspection.
• Welding, grinding, cutting, or torch work near cardboard, plastic, insulation, wood, trash, dust, or chemical storage.
• Sparks falling through floor openings, wall gaps, pipe penetrations, drains, grates, or shaft openings.
• Fire extinguishers blocked, discharged, missing, damaged, or not matched to the fire hazard.
• Fire watch leaving the area too soon after hot work is complete.
• Heat or sparks entering a wall, ceiling, roof, duct, or pipe chase where smoldering cannot be seen right away.

Safety Checklist

Before Work Begins

• Review the hot work permit, fire watch assignment, emergency plan, and required watch time after work ends.
• Remove combustible materials from the work area where possible.
• Cover or shield materials that cannot be moved using approved fire-resistant protection.
• Check both sides of walls, floors, ceilings, roofs, shafts, and openings where sparks or heat may travel.
• Make sure fire extinguishers are inspected, accessible, charged, and appropriate for the hazard.
• Confirm the fire watch knows how to stop the work, alert the crew, use the extinguisher if trained, and call emergency help.

During Work

• Stay in the assigned fire watch position and keep the hot work area in view.
• Watch for sparks, smoke, flame, hot slag, burning smells, heat buildup, and smoldering materials.
• Keep workers and materials out of the spark path and drop zone.
• Do not perform other tasks that distract from fire watch duties.
• Stop hot work if conditions change, combustibles move into the area, or fire protection is no longer ready.
• Continue the fire watch after hot work ends for the time required by the permit or site plan.

Crew Talking Points

• What hot work is being done today, and where could sparks or heat travel?
• Who is assigned as the fire watch, and do they understand their duties?
• What combustibles need to be moved, covered, or shielded before work starts?
• Where are the fire extinguishers, alarms, exits, and emergency contacts?
• How long must the fire watch remain after hot work is complete?
• Speak up if you see smoke, sparks reaching unsafe areas, missing extinguishers, hidden openings, or combustibles near hot work.

Stop Work If

• The hot work permit, fire watch, extinguisher, or area inspection is missing.
• Combustible materials cannot be removed, covered, or shielded from sparks and heat.
• Sparks, slag, or heat can reach hidden spaces, lower levels, shafts, ducts, or wall cavities without control.
• Flammable vapors, dust, chemicals, fuel, or pressurized containers are present near the hot work area.
• The fire watch must leave, becomes distracted, or cannot see the hazard area.
• Smoke, flame, burning smells, heat buildup, or smoldering material is found.

Final Reminder

Fire watch is not a side task. Stay alert, control sparks, keep extinguishers ready, and watch the area until the fire risk is fully clear.