F-03 Hot Work Permits and Fire Watch 2 — Questions and Answers
Question 1: Before issuing a hot work permit, the permit authority must verify which of the following?
- The worker holds a union card
- Combustibles have been cleared 35 feet from the work area (Correct answer)
- The site owner has approved overtime
- Rain is not forecast for the day
Correct answer: Combustibles have been cleared 35 feet from the work area
The permit authority must confirm that combustibles are cleared or shielded within 35 feet before hot work begins.
A hot work permit is only valid when the permit authority has physically inspected the work area and confirmed: combustible materials removed or shielded within 35 feet; fire watch personnel assigned; appropriate extinguishers present; fire alarm and sprinkler systems are operational or fire watches cover impaired areas; and all openings in walls/floors near the work area are covered to prevent spark migration. Worker credentials and weather conditions are not part of the fire code permit checklist.
Question 2: Hot work permits are generally valid for what maximum time period?
- One shift (up to 12 hours) (Correct answer)
- One week
- One month
- The duration of the construction project
Correct answer: One shift (up to 12 hours)
Hot work permits are typically issued for a single shift or specific work period, not extended durations.
Hot work permits are issued for a specific location, specific operation, and specific time period — generally one shift or one working day. This is because site conditions change: different crews arrive, materials are moved, weather changes, and fire watch personnel rotate. Issuing a permit for a week or month would mean the permit conditions might no longer be valid. Each day of hot work typically requires a fresh inspection and new permit.
Question 3: Which condition would immediately void a hot work permit?
- Wind speed above 10 mph outdoors
- Fire watch personnel leaving the area before the 1-hour post-work period ends (Correct answer)
- The hot work taking longer than estimated
- A different worker completing the hot work than the one originally listed
Correct answer: Fire watch personnel leaving the area before the 1-hour post-work period ends
Abandoning the mandatory 1-hour post-work fire watch immediately voids the permit conditions and creates an unprotected hazard.
Fire watch is a required condition of any hot work permit. If fire watch personnel leave before the mandatory 1-hour post-work monitoring period is complete, the safety conditions of the permit are violated. The area is now unmonitored for delayed ignition. All hot work in the area must stop and the area must be re-evaluated before work resumes. The other options (wind speed, duration, worker identity) may require permit modifications but do not by themselves void the permit in the same way abandoning fire watch does.
Question 4: What is the role of the fire watch person during active hot work operations?
- Assist the welder by holding materials in place
- Monitor the work area continuously for fires, smoke, or sparks (Correct answer)
- Complete paperwork and log the work for FDNY records
- Test sprinkler heads near the work area
Correct answer: Monitor the work area continuously for fires, smoke, or sparks
During hot work, the fire watch person must continuously monitor the area for signs of fire, smoke, or stray sparks — not assist with the work itself.
A fire watch person must: stay alert and continuously scan the work area and adjacent areas for sparks, smoke, or fire; keep a charged extinguisher immediately available; know how to activate the fire alarm; and be prepared to call 911. They must not be assigned any other duties while serving as fire watch. If the work area includes multiple floors or inaccessible spaces where sparks could travel, additional fire watch personnel must be posted in those areas.
Question 5: What type of hot work requires a permit under NYC Fire Code?
- Painting with oil-based paint
- Welding, cutting, brazing, or grinding that produces sparks or open flame (Correct answer)
- Using power tools that generate heat
- Operating a generator
Correct answer: Welding, cutting, brazing, or grinding that produces sparks or open flame
Hot work permits are required for operations that produce sparks, open flames, or heat sufficient to ignite combustibles — primarily welding, cutting, brazing, and grinding.
Under NYC Fire Code Chapter 35, hot work includes any operation that uses open flames or produces heat and/or sparks. This specifically includes: arc welding and cutting, gas welding and cutting, brazing and soldering, grinding that produces sparks, and torch-applied roofing. Power tools that generate heat through friction but not sparks (like drills or saws) are generally not classified as hot work unless used near flammables. Generator operation is not hot work.
Question 6: Where must the completed hot work permit be kept during hot work operations?
- Filed in the site office only
- At the hot work location and readily available for inspection (Correct answer)
- Mailed to FDNY at the start of each job
- Posted on the building exterior
Correct answer: At the hot work location and readily available for inspection
The hot work permit must be kept at the work location so FDNY inspectors can verify it during unannounced inspections.
The hot work permit must be available at the actual location where hot work is being performed. FDNY fire prevention inspectors conduct unannounced inspections of construction sites and will check that a valid hot work permit is present, that fire watch is in place, that combustibles are cleared, and that extinguishers are available. A permit kept only in the site office is not accessible for inspection at the work area and does not satisfy the requirement.
F-03 Hot Work Permits and Fire Watch 2
Before issuing a hot work permit, the permit authority must verify which of the following?