Fire & Smoke Damper Testing – Quick Reference (AS1851)
As per Australian Standard AS 1851 – Routine Service of Fire Protection Systems and Equipment, fire and smoke dampers must be inspected and tested as part of the building’s fire safety maintenance program.
Fire Dampers
What they are:Fire dampers are installed in ducts where they pass through fire-rated walls or floors. Their purpose is to prevent fire from spreading through the ductwork between fire compartments.
They normally contain a fusible link that melts when exposed to high temperature, causing the damper blades to close and stop the spread of fire.
Testing requirement:
Fire dampers are typically inspected and tested on a 5-year cycle.
20% of dampers are tested each year, ensuring all dampers are checked within five years.
Reference:AS 1851:2012 – Section 13 – Fire and Smoke Control Features
Smoke Dampers / Smoke Control Systems
What they are:Smoke dampers are motorised dampers installed in ductwork that are designed to close automatically when the fire alarm system is activated to prevent smoke spreading through the air-conditioning system.
They are commonly used in systems such as:
Stair pressurisation systems
Smoke exhaust systems
Return air duct smoke control
Testing requirement:
Operational testing: typically every 3 months during routine fire system testing.
Detailed inspection and servicing: annually.
Reference:AS 1851:2012 – Section 17 – Mechanical Air Handling Systems Used for Smoke Hazard Management
