Fire risk arising from ventilation systems sits in three main areas: kitchen extract grease accumulation, combustible particulate within supply and extract ductwork, and uncontrolled propagation paths through the building.
Kitchen extract grease
Grease accumulation within canopies, filters, plenums, ductwork runs and fans is one of the most common causes of commercial kitchen fires. TR19 Grease requires deposits to be managed below a 200 micron threshold.
Combustible particulate
Dust, lint, fibre and other particulate within ductwork creates a combustible load that, in the event of an ignition source, can propagate fire through the building fabric.
Mitigation
- Risk-based TR19 / TR19 Grease inspection cycles
- Programmed hygiene management with evidence capture
- Adequate access provision throughout each system
- Fire damper inspection coordination where applicable
- Integration with the building fire risk assessment