Fire Systems Flashcards
Define hazard
Potential damage/ harm
Define risk
The chance or probability that a person will be harmed or experience and adverse health effect if exposed to a hazard
Water fire extinguisher
Do not use on liquid, electrical or metal fires
2 white stripes
Powder fire extinguisher
Do not use on metal fires
1 blue line
Foam fire extinguisher
Do not use on electrical or metal fires
1 white/yellow line
Carbon dioxide fire extinguisher
Do not use on metal fires
1 black line
Double-knock system
Gives 10 minutes delay from detection from one detector before evacuating the building, giving security a chance to check out the fire
Where should detectors be placed?
At the top of the shaft or flue like structure
Within 1.5 m of penetration on each floor
Smoke detector
7.5 m from all points of the ceiling
Heat detectors
5.3 m from any points
Flow time
Time taken to get the non trained occupants out of the building
How wide should a fire escalate be?
At least 1 metre
