When Your Fire Alarm or Sprinkler System Goes Down: Fire Watch Requirements in Ontario

A fire alarm panel goes into trouble mode on a Tuesday afternoon. A sprinkler riser has to be drained for a repair. A contractor needs to take a zone offline to swap a faulty detector. In each case, the building's fire protection is, for some period of time, not fully functional — and that's the moment most property managers don't realize they have a separate, immediate compliance obligation that has nothing to do with getting the system fixed quickly.

What a Fire Watch Actually Is

A fire watch is a temporary, hands-on safety measure used whenever a building's fire alarm or sprinkler system is impaired, shut down for testing or repair, or otherwise not providing its normal level of protection.

Instead of relying on automatic detection or suppression, a designated person physically patrols the affected area on a set schedule, watching for smoke, fire, or other hazards, and is prepared to call 911 and begin evacuation procedures immediately if something is found. It's a stopgap — a way of keeping people safe during the window where the building's normal protection can't.

When It's Triggered

The Ontario Fire Code is direct about this: when a fire alarm, sprinkler, or standpipe system is taken out of service for any reason — a repair, a planned upgrade, a power outage, even routine maintenance — a notification procedure has to be in place, and a fire watch may be required as one of the protective measures while the system is down.

In practice, the exact threshold for when a fire watch becomes mandatory (as opposed to optional) is something your local fire department — the Authority Having Jurisdiction (AHJ) — decides based on a few factors:

• How much of the system is affected — a single device offline is very different from an entire floor's sprinkler zone shut down
• How long the impairment is expected to last
• Whether the building is occupied during the impairment
• The occupancy type — a retirement home or hospital is held to a tighter standard than an empty warehouse

As a general guideline drawn from national fire protection standards, a fire alarm system out of service for more than a few hours in a 24-hour period, or a sprinkler system impaired for an extended stretch, is squarely in fire watch territory — but the AHJ's call is what governs, and it's always safer to ask before assuming a short repair window doesn't count.

What's Actually Required During a Fire Watch

A fire watch isn't a security guard glancing around once in a while. It has specific, enforceable requirements:

• Patrols of the affected area at least once every hour, covering occupied and unoccupied spaces alike — storage rooms, mechanical rooms, and other places people tend to forget
• A written log of each patrol, with the time recorded and signed or initialled by the person conducting it
• A reliable means of communication on hand at all times — a cell phone or radio — so 911 can be called immediately from a safe location
• Personnel who are doing the fire watch and nothing else — it cannot be a side task layered onto someone's regular job during their shift

That last point trips up a lot of buildings. Asking the superintendent or a front desk attendant to "keep an eye on things" while they continue their normal duties does not meet the standard — if it's ever tested after an incident, it won't hold up.

Who Needs to Be Notified

Whenever tests, repairs, or alterations are being made to a fire protection system — including sprinkler and standpipe systems — the Ontario Fire Code requires a notification procedure to be in place. That generally means notifying:

• The fire department, where necessary for safety
• Building occupants, particularly where the impairment affects their safety or means of egress
• Your monitoring company, so they know not to treat the outage itself as a fault condition

When the system is restored, the same loop needs to close: confirm the system is fully operational, notify everyone who was told about the impairment that it's resolved, document the date and time of restoration, and remove any impairment tags or signage. Skipping that last step is a common, easily avoidable paper trail gap.

Why This Gets Overlooked — and Why That's Risky

Most property managers think about fire protection compliance in terms of scheduled inspections — annual testing, quarterly checks, the things that show up on a calendar. A fire watch obligation doesn't show up on a calendar. It shows up the moment something breaks or the moment a contractor needs the system shut down to work on it, and it's easy to assume the repair itself is the only thing that matters.

The risk isn't hypothetical. A building is statistically at its most vulnerable to a serious loss during exactly the window when its protection is impaired — not because impairments are common, but because there's no automatic backstop if something does go wrong during one. If an incident occurs during an unmanaged impairment and no fire watch was in place, the building owner is exposed on two fronts at once: a Fire Code violation, and a much harder conversation with the insurer about whether coverage applies at all.

What to Do When Your System Goes Down

• Confirm the scope and expected duration of the impairment with whoever is doing the repair
• Contact your local fire department or fire protection provider to confirm whether a fire watch is required for the specific impairment
• If required, arrange dedicated personnel — not a multitasking staff member — and start hourly logged patrols immediately
• Notify your monitoring company and any other parties who need to know the system is offline
• Once restored, document the restoration, notify everyone again, and remove any impairment signage

If you're not sure whether a specific repair or planned shutdown crosses the threshold, the safest move is to ask before the work starts — not after.

How First National Fire Protection Helps

When we take a fire alarm or sprinkler system offline for repair or maintenance, we tell you up front whether the work is likely to trigger a fire watch requirement — before the system goes down, not after. We coordinate the notification procedure with your monitoring provider and document the restoration once work is complete, so the compliance paper trail is handled alongside the repair itself, not left for you to piece together afterward. Our annual inspection packages bundle this kind of proactive coordination into a single scheduled visit per building.

If you're planning a system shutdown, an upgrade, or you've had a recent impairment and aren't sure whether it was handled correctly, contact First National Fire Protection and we'll walk through what's required for your specific building and occupancy type.