Maintenance
Maintenance is the work of keeping a fire alarm system operational, principally the repair or replacement of inoperative devices and components, as distinct from inspection, which is visual, and testing, which is operational. Ontario's Fire Code does not carry a general maintenance article for fire alarm systems: repairs, replacements and alterations of components fall under Article 6.3.1.8, which sends the work back to CAN/ULC-S524, and Division C, Article 1.2.1.2 sets the qualification for the person doing it. Maintenance is also the one activity on that list that an unqualified person may perform, under on-site supervision, to a maximum of two supervised persons at a time.
What counts as maintenance
Alberta's code interpretation treats maintenance as its own activity, the removal or replacement of inoperative devices, sitting alongside inspection and testing rather than inside them. That is a useful line to hold. Inspection tells you something is wrong. Testing confirms it. Maintenance is the work that fixes it, plus the routine replacement of consumables such as batteries.
It is not verification, which is a one-time acceptance process for new or altered work under CAN/ULC-S537. Whether a piece of maintenance is large enough to re-trigger a verification is a separate question, dealt with below.
Which standard and which code provision
In Ontario there is no fire alarm maintenance article as such. The relevant provision is Fire Code Article 6.3.1.8, which requires repair, replacement and alterations of fire alarm system components to be in accordance with CAN/ULC-S524, the installation standard. That is the important structural point: fixing a device on an in-service system is governed by the installation standard, not by the inspection and testing standard.
CAN/ULC-S536 still governs the periodic inspection and testing that surrounds the maintenance, under Article 6.3.2.2. And where a building has integrated fire protection and life safety systems, Article 6.10.1.1 covers the testing and maintenance of the interconnections, in conformance with CAN/ULC-S1001.
Who is permitted to do it
Fire Code Division C, Article 1.2.1.1(c) catches every person who repairs, replaces or alters components of a fire alarm system, and Article 1.2.1.2.(1) requires a program or course acceptable to the Fire Marshal.
Then comes the exception, and it applies to maintenance work only. Article 1.2.1.2.(2) permits a person who has not completed the required program to perform clause (1)(c) work provided the work is done under the supervision of a qualified person, no more than two persons work under that supervisor at the same time, and the supervision is provided at the work site. Sentence (3) requires the supervisor to advise the owner in writing that the work has been completed.
Read the scope of that allowance carefully. It does not extend to annual tests and inspections, and it does not extend to interconnection testing. Those are clauses (a) and (b), and there is no supervision route into them. More in who can legally work on fire alarms in Ontario.
Separately, the electrical installation work itself is a compulsory trade in Ontario, so a 309A certificate is in play whenever you are pulling conductors or terminating in the panel.
How often
Maintenance has no interval. It is condition driven: you do it when an inspection, a test or a trouble condition tells you something is not working. What is calendar driven is the inspection and testing cycle that finds the fault.
What documentation it produces
The written advice to the owner under Division C 1.2.1.2.(3) where the work was done under supervision. Beyond that, the record of the repair usually lands in the system logbook and in the next S536 report, where the previously recorded deficiency is closed out. Fire Code Article 1.1.2.2.(1) retention of two years applies to records the Code requires.
What goes wrong
Assuming maintenance never triggers a verification. Calgary Regulation Bulletin RB06-064 defines alterations to include maintenance, repair, upgrading and replacement, and requires all of them to be verified to CAN/ULC-S537. That is one Alberta municipality and it does not bind an Ontario job, but it shows how far an AHJ can take the word. Ontario states no threshold at all, so ask.
Stretching the supervision allowance to cover the annual. It does not, and the report is signed by the person who did the work.
Replacing a device with a different model and assuming the building stays on its original code edition. Like for like generally holds. Non-equal replacement is where the argument starts.
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