Keeping Your Building Safe: Understanding the New CAN/ULC-S536-19 Fire Alarm Standards
The sixth edition of CAN/ULC-S536-19 Test & Inspection of Fire Alarm System brings several critical updates to the inspection and testing of fire alarm systems in Canada. This revision focuses on aligning standards, integrating new technologies, and enforcing stricter documentation protocols to enhance building safety.
Here is a focused look at the most significant changes you need to know:
1. Significant Alignment of Standards
One of the most foundational changes is the harmonization of the three major fire alarm standards. The standards for Installation (S524), Inspection (S536), and Verification (S537) were developed concurrently to ensure consistency across the entire lifecycle of a fire alarm system. This alignment is reinforced by the National Building Code 2020 and National Fire Code 2020, which now reference these 2019 editions.
2. Integration of New Technologies
The standard has expanded to cover modern fire safety equipment that was previously less defined:
Carbon Monoxide (CO) Detectors: New requirements now govern CO detectors connected to fire alarm systems. This includes specific placement rules, such as installing detectors inside or within 5 meters of every bedroom door in residential or care occupancies.
Wireless Devices: Specific subsections have been added for short-range radio frequency (wireless) devices.
Air Sampling Detectors: There are now additional requirements for air sampling type detectors to ensure they are tested effectively.
3. Strict Documentation & "No Rewording" Rule
Perhaps the most impactful change for facility managers and technicians is the new approach to record-keeping:
Standardized Tabular Format: All annual and monthly inspection records must now follow a strict tabular format provided in the standard. These forms cannot be reworded or revised in order or format, though companies may add their own logos.
Technician Attendance Log: A brand-new requirement (Section 20.4) is the Technician Attendance Log. This log must record the date, time, and the primary technician's certification number for every site visit.
On-Site Records: Buildings must now maintain comprehensive documentation on-site, including building diagrams for smoke-control equipment, a description of each field device, and even a copy of site-specific software.
4. Enhanced Technical Testing Procedures
The 2019 edition introduces more rigorous testing for critical system components:
Fire Signal Receiving Centres: New sections require testing the interconnection to receiving centres to confirm that alarm, supervisory, and trouble signals are transmitted correctly .
Circuit Fault Tolerance Test: Technicians must now perform fault tests for both DCL & Non DCL Circuit and verify that fault isolators correctly handle short circuits.
Waterflow Devices: Testing for waterflow detection (like paddle and pressure types) must now be done using an "appropriate waterflow means" (such as an inspector’s test valve), and the specific time delay setting must be recorded.
Control Units: Control units or transponders that indicate time are now required to display the current date and local time.
5. Expanded Glossary and Scope
To minimize ambiguity, the glossary has been significantly expanded from 63 to 86 definitions. Additionally, the overall document structure has been reorganized into 24 sections to make the standard more user-friendly for those performing the inspections.
By focusing on these new requirements, building owners and fire safety professionals can ensure their systems are not only compliant with the latest codes but are also maintained to the highest safety standard. For more details, contact us!