Fire Alarm & Sprinkler Impairments

Renovation, tie-ins and repairs often require shutting down sprinklers or fire alarms. That’s exactly when a fire is most likely, from hot work, temporary power and construction debris. An impairment plan keeps the building protected while the system is down.

• Sprinkler fitters
• Electricians
• Facility managers
• General contractors

Before shutting a system down

• Get approval from the building owner or facility manager
• Notify the fire department, the alarm monitoring company and the insurance carrier, as required
• Tag the valve or panel to show it’s out of service
• Limit the shutdown to the smallest area and shortest time possible
• Have parts, tools and people ready so work goes quickly
• Set up a fire watch for the impaired area
• Stop or tightly control hot work and other fire risks in the area

Fire watch during the impairment

• Trained people patrol the impaired areas, with extinguishers and a way to call the fire department.
• Many fire codes require a fire watch whenever sprinklers or alarms are out for a set number of hours.
• Keep a log of patrols.

Restoring the system

1. Reopen valves fully and secure them.
2. Test the system as required (like a main drain test or alarm test).
3. Remove tags and notify everyone who was told about the shutdown.

Day-to-day protection

• Cover sprinkler heads during painting or dusty work only with approved covers, and remove them at the end of the shift.
• Keep storage at least 18 inches below sprinkler deflectors.
• Don’t hang anything from sprinkler pipes or heads.
• Keep smoke detector covers on only during dusty work, and coordinate with the alarm contractor.
• On buildings under construction, keep standpipes and fire department access working as the building rises. See NFPA 241.

Last updated: October 2, 2026