By Alan Reti, Founder & Lead Inspector, Activate Fire Safety | 20+ Years Serving Calgary and Edmonton
Ontario’s Office of the Fire Marshal reviewed fatal residential fires over ten years and found that in 21% of cases, a smoke alarm existed in the building but failed to operate. These were not buildings where someone had neglected to install fire protection. The systems were there. They just did not work when a fire broke out. Alberta does not publish equivalent provincial data, but the failure modes behind that number — aging detectors, untested batteries, skipped device-level verification — are not unique to Ontario. They show up in commercial buildings across Calgary and Edmonton regularly.
That figure informs every inspection Activate Fire Safety conducts. A system can show no faults on the panel, carry a service tag from last year, and still fail to perform when conditions require it. Device-level fire alarm testing is the only way to establish whether a system will actually function, and across a lot of commercial buildings in Calgary and Edmonton, that verification has never happened to the standard the Alberta Fire Code requires.
The four building types below each carry a different version of that risk, and the people inside each one experience the consequences differently.
Residential Apartment Buildings
Tenants living in a multi-residential building have no practical way to verify whether the fire alarm system protecting them meets the standard it should. They trust the building owner to arrange that, and building owners trust a fire alarm inspection company to conduct the work in conformance with CAN/ULC-S536, the standard governing inspection and testing of fire alarm systems across Canada.
When an inspection company cuts corners, the gaps rarely show. CAN/ULC-S536 requires actual load testing of battery backups — not just a voltage check. A battery that hasn’t been load-tested can read as healthy on the panel while lacking the capacity to sustain a full alarm event. CAN/ULC-S536 requires periodic sensitivity testing of smoke detectors throughout their service life, and detectors that have been in service for ten or more years face increased drift risk that makes this testing especially critical. Notification devices need confirmation of actual output levels, not just a power-on check. None of these failures announce themselves on a panel that reads normal, and the tenants sleeping on the upper floors have no way to know any of it is happening.
Warehouses and Distribution Facilities
Industrial environments create conditions that degrade fire alarm equipment in ways that an office building does not. Forklifts displace pull stations during a busy shift. Dust works its way into detector housings in dry storage areas over a season. Refrigerated zones expose device components to condensation cycles that compound over months. High ambient noise from cooling and processing equipment means that a horn operating at reduced output may not reach a worker who needs to hear it.
These problems accumulate gradually and do not necessarily trigger panel faults. Individual devices drift outside their rated sensitivity range, collect contamination that slows their response, or sustain physical damage that reduces their reliability, none of which a panel status of normal reflects. Industry data consistently shows that documented, device-level testing programs produce significantly lower failure rates — where well-maintained means documented, individual device testing on a defined schedule. A commercial fire alarm testing program that skips device-level verification misses exactly the failure modes most likely to affect a working industrial environment.
Self-Storage Facilities
Self-storage operations run with minimal staff outside business hours. Customers access their units independently. When a troublesome condition develops on the panel on a Saturday evening, it can sit there unnoticed until Monday morning or longer, depending on how the building owner monitors the system.
In that operating environment, the fire alarm maintenance record carries more weight than it does in a staffed building. When a fire occurs, or when an insurer reviews the property’s compliance history, or when a fire authority examines records after an incident, those inspection reports need to establish that the building owner met their obligations under the Alberta Fire Code. CAN/ULC-S536 specifies required report formats, individual device records, deficiency classification, and documentation of corrective action. A contractor who issues reports that do not follow those requirements leaves the building owner holding a paper record that will not survive scrutiny. Building owners generally do not discover this until someone with authority sits down with the file.
Multi-Tenant Commercial Buildings
Office buildings with multiple tenants change constantly. Tenants build out their spaces, add server rooms, install kitchenettes, and reconfigure ceilings. Each of those changes can affect detector coverage, alter zone assignments, or change how the fire alarm control unit sequences its response to an alarm event.
Annual fire alarm system inspection verifies the system as it exists on the day of the visit. It does not account for changes that tenants made in the twelve months before that visit. CAN/ULC-S537 requires verification before any alteration affecting system performance goes live. Building managers and tenant contractors routinely skip this step — often because neither party realizes the renovation triggered a fire alarm requirement. The result is a building that stays current on its inspection cycle while operating a system that no longer fully reflects the building it covers. The occupants on every floor rely on that system without knowing the discrepancy exists.
The Common Thread
Every building type carries its own version of the risk, and its own version of what inadequate fire alarm testing services produce. The common thread is accountability. Under the Alberta Fire Code, the building owner bears responsibility for ensuring inspection and testing conform to CAN/ULC-S536. Hiring a contractor does not satisfy that obligation. Conducting the inspection to the standard does.
At Activate Fire Safety, our certified technicians conduct every fire alarm system inspection to the full requirements of CAN/ULC-S536. We barcode every device, test each one individually, and document the results in the format the standard specifies. We resolve the majority of deficiencies on the same visit, carrying the parts to do so on every service vehicle. The inspection record we leave behind is complete, current, and ready for review by any authority having jurisdiction or insurer who requests it.
That 21% figure from Ontario’s fire data reflects what happens when building owners assume a system works rather than verifying that it does. ULC fire alarm inspection is how building owners in Calgary and Edmonton close that gap.
If your last inspection report doesn’t include individual device test results for every detector, pull station, and notification appliance in your building, the inspection didn’t meet the standard. Contact Activate Fire Safety to find out where your building actually stands.
