Sprinkler Impairment in an Occupied Office Tower
During a routine annual inspection of a six-story, 180,000-square-foot office building, you find the wet-pipe sprinkler system has been drained to repair a cracked four-inch riser. The contractor's main drain test showed a 30 psi drop before the shutdown, and parts are estimated to arrive in 36 hours. About 650 tenants are working in the building. The property manager has not notified the fire department and asks whether the building can stay open without a fire watch; she says the cost is $4,000 and points out that smoke detectors and a fire alarm are still operating. You also see a hot-work permit posted for the third floor for the same day. The contractor has posted a handwritten 'system down' sign at the riser room door.
1. What immediate actions must occur before the riser repair begins, and who must be notified? Explain the basis for each action.
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The system is impaired, so NFPA 25 impairment procedures apply. Before work starts, the owner must notify the AHJ, the fire department, and building occupants; the notice should identify the affected area, expected duration, and reconnection plan. A fire watch is likely required because 650 occupants are in a six-story building without sprinkler protection. I would require the watch unless the AHJ documents why the risk is acceptable. The hot-work permit must be suspended: open flame or sparks near a drained system compound the hazard. The contractor should post impairment tags, keep the riser room secured, and provide a written repair schedule. The property manager must confirm the fire alarm remains in service and exits stay clear. I would document the 30 psi main drain result and the 36-hour estimate because duration affects whether a fire watch is practical or whether occupancy should be limited. The key is not merely 'system down'-it is a supervised, notified, and monitored impairment.
2. The owner refuses the fire watch because of cost. What enforcement options do you have, and can the building remain occupied?
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Refusal of a required fire watch does not make the hazard disappear. I would issue a written notice or order citing the adopted fire code and NFPA 25 impairment requirements, with a deadline before the repair begins. If the owner still refuses, options include ordering the affected floors or building evacuated until protection is restored, approving a limited occupancy plan only if the AHJ can justify it, or pursuing a stop-work or stop-use action. Cost is not a defense. I would also suspend the hot-work permit and verify the fire department has been notified. The enforcement file should include photos, the contractor's estimate, the main drain result, the owner's refusal, and the notice. If any occupancy continues, I would require a documented fire watch with trained personnel, recorded rounds, and a means to notify the fire department. The decision must rest on occupant risk, not on the owner's budget.
3. What closeout steps are required after the repair is complete?
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After the riser is repaired, the system must be restored and tested before the impairment is closed. That includes an appropriate leak or hydrostatic test, main drain test, alarm and valve tests, and verification that all valves are open and supervised. The contractor must notify the AHJ, fire department, and occupants that protection is restored. The impairment tag and log entry should be updated with time, date, and test results. I would confirm the fire watch is discontinued only after a successful test and that the hot-work permit is not reactivated without a new permit. The record should include the contractor's test report, photos, and the original notice. I would also check whether any unprotected area remains and whether the alarm panel shows normal. Closeout is not just 'system back on'-it is documented restoration and notification.