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Hot Work Fire Watch Checklist
Before, during and after welding, cutting or torch work: the 35-foot clearance, shielding, extinguishers, alarm method.
By Price Protection SecurityReviewed TX DPS Lic #B09430601

How to use this checklist
Print it and work through it with the permit authorizing individual before the torch is lit, tick the boxes as each item is done, and keep the completed sheet with the permit. The step-by-step version below the checklist explains each stage. The checklist follows OSHA’s 29 CFR 1910.252(a)(2)(iii) and NFPA 51B; where a site’s permit system adds requirements, the permit governs.
Before the work
- Hot work permit issued, read and posted at the work location
- Permit authorizing individual named and reachable
- Sprinklers and detection in service, or an impairment plan in place if they are bypassed for the work
- Combustibles moved at least 35 feet from the work in every direction
- Combustibles that cannot be moved shielded with fire-resistant covers
- Floor and wall openings within 35 feet closed or covered
- Areas below and behind the work checked, including the floor below an opening and the far side of a wall
- Ducts and conveyors that could carry sparks shut down or protected
- Extinguishers of the right type staged within reach, charged and inspected
- Charged hose line available where the site’s permit requires it
- Alarm method confirmed and the fire department’s number posted
- Fire watch assigned, trained in extinguisher use and alarm procedure, with no other duty
- Fire watch log opened with the permit number, location and start time
During the work
- Watch continuously in sight of the work and the spaces sparks can reach
- Shields and covers checked as the work moves
- Work stopped if wind, a moved shield or a new combustible changes the conditions
- Any small fire extinguished and reported; any fire beyond that, alarm raised and the area cleared
- Log entries for the start of work, stoppages and any event
After the work
- Post-work period held: at least 30 minutes under OSHA, at least one hour under NFPA 51B, or the longer period the permit sets
- Work area, floor below, far side of walls, roof drains and voids checked for smoke, heat or smoldering
- Further monitoring performed where the permit authorizing individual requires it
- End time, post-work period and final check recorded in the log
- Permit closed and signed by the fire watch and the permit authorizing individual
- Permit and log returned to the site file
Notes on filling it in
The clearance items are the ones most often skipped, and they are the ones a post-work fire usually traces back to: paper-faced insulation behind a wall, cardboard on the floor below, a duct that carried a spark forty feet. Walk the 35 feet with a flashlight and look down and through, not only around. The watch’s training box matters: an untrained watch cannot use the extinguisher it is standing next to. And the post-work period is not a waiting room; the checks in that period are the ones that find a fire that started an hour ago. The 35-foot rule answer and the OSHA rules article go through the regulation. Price Protection staffs hot work fire watch across Greater Houston, with the log and the equipment. This is a summary, not legal advice.
Step by step
Confirm the permit
Read the hot work permit before anything is lit: the work, the location, the permit authorizing individual, the start and end times and the post-work period the permit sets. No permit, no work.
Clear and shield the area
Walk 35 feet in every direction, including below floor openings and behind walls. Move combustibles out, and shield with fire-resistant covers what cannot be moved. Close or cover openings that could pass sparks.
Stage equipment and confirm the alarm
Extinguishers of the right type within reach, charged and inspected. Confirm how the alarm is raised and the fire department called, especially if a detection system is bypassed for the work.
Assign the fire watch
Name the watch, confirm training in extinguisher use and alarm procedure, and confirm the watch has no other duty during the work. Record the name on the permit and in the log.
Watch continuously during the work
Stay in sight of the work and the spaces sparks can reach. Stop the work if conditions change: wind, a moved shield, a new combustible, a lost extinguisher. Log the start and any stoppage.
Hold the post-work period
Stay at least 30 minutes after the work ends under OSHA, or the hour NFPA 51B requires where the permit follows it. Check the area and the far side of every opening for smoke or heat before leaving.
Close the permit and the log
Record the end time, the post-work period, the final check and the conditions found. Sign, have the permit authorizing individual sign, and return the permit and the log to the site file.
Questions
Using this checklist.
Is 30 minutes or an hour right?
OSHA's 29 CFR 1910.252(a)(2)(iii) requires at least 30 minutes. NFPA 51B requires at least an hour, with further monitoring the permit authorizing individual may require. The client's permit and the authority having jurisdiction decide; Price Protection staffs whichever window the permit sets.
Does a fire watch replace clearing the area?
No. Clearing and shielding come first; the watch covers what cannot be cleared and what nobody anticipated. A watch over an uncleared area is the wrong answer to the wrong question.
Who can be the fire watch?
Anyone trained in extinguisher use and the alarm procedure with no other duty during the work: a crew member, a building employee or a contracted officer trained for it. Many sites contract the watch so the crew can work.
What if the work moves?
The clearance, shielding and watch move with it. A new location is a new permit on most sites, and the log records the move.
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