AirisQ Ltd.
image: Conditions found in kitchen extract ductwork during a recent assessment survey.

Fire safety through kitchen extract ventilation audits

Kitchen extract survey - monitoring of these potential fire hazards with grease thickness readings on a regular basis will minimise fire risk by identifying any necessary safety cleaning. AirisQ's experience in this critical area provides clients with a scored and weighted risk analysis giving both reassurance and compliance with TR/19 and the Loss Prevention Councils guidance notes.

image: internal grease thickness graph

Fire safety through fire damper audits. To provide compliance with BS 5588: Part 9: 1989 Fire Precautions in the design and construction of buildings Part 9 Code of Practice for ventilation and air conditioning ductwork.

"All fire dampers should be tested by competent persons at regular intervals not exceeding two years"
"Spring operated fire dampers should be tested annually and fire dampers in dust laden atmospheres should be tested much more frequently to suit the degree of pollution"

HTM 2025 FOR FIRE DAMPERS STATES THE FOLLOWING GUIDANCE:

photo: fire ventilation duct.

AirisQ Limited performs these fire damper compliance services. Included in our service is digital photo documentation, hard and e-copy database, ceiling and duct locator labels to identify locations, colour coded; entry of damper location on to customer drawings, damper drop tests/ re-set, minor damper operational adjustment and/or repair, notification of more major repair recommendations if necessary. The service and inspection can be performed as a "stand alone" performance or as part of our regular ventilation and air hygiene monitoring agreement.

 

Fire Dampers

Diagram of a fire damper.

Fire Dampers are typically intended to be used as part of the HVAC duct system when passing through a fire rated barrier (walls, partitions, floors). The trigger mechanism is a heat fusible link that when activated, impedes the migration of high temperatures into and through the duct system.

UL, AMCA and Damper Manufacturers Require "once every 6 months" Damper/Actuator cycling to ensure proper operation of fire/smoke and smoke rated Dampers during a Fire event.

 

Fusible links

Diagram of a fusible link.

Fusible links are temperature sensitive fire protection devices designed to be part of a fire protection system. The system is activated when the ambient temperature increases to the point that causes the fusible link to "break-apart". At the point of breakage, it releases the pre-loaded fire protection device, thus restricting the spread of fire.

 

 

 

 

AirisQ Limited. Institute of Healthcare Engineering & Estate Mangement. Construction Online. Safe Contractor approved.