How many times is a fire alarm system verified (or how many times can a fire alarm system be verified)?
A fire alarm verification inspection is normally conducted when a newly installed fire alarm system is commissioned. There are some additional provisions within CAN/ULC-S537 (Verification Standard for Fire Alarm Systems) and Provincial Fire Codes that will trigger the requirement for a verification or special audit however. These can include additions or modifications to an existing fire alarm system, replacement of components such as booster power supplies, the common control’s motherboard, zone expansion modules, control circuits, annunciators, and initiating or indicating appliance modules. Replacement or repair of any system wiring will also trigger a verification but this is usually limited to the affected devices on that zone or circuit. On rare occasions an order by the Authority Having Jurisdiction may require the building owner to have the fire alarm system verified (a recent incident involving several grow-ops in an apartment building comes to mind). 29. CAN/ULC-S536-04 (Insp
