Fire and Smoke Revision Questions And Answers With Verified Study Solutions

What are PDIs on the smoke detector? - Answer-Green indicator light illuminated Nothing is blocking detector How do you don a PBE? *SPI* - Answer-Open storage case Tear off red pull strip Remove device from bag Pull off "pull to ACTUATE" ring in direction indicated to start flow of oxygen Remove face mask Hold device with life support pack away from user Grasp hole in neck seal and widen with thumbs Bend forward from waist, insert chin into hole & pull across face and over head While standing upright, pull hood down until headband is fitted to forehead Check neck seal for secure fit How would you remove PBE? - Answer-Move away from fire Grasp top of hood and pull forward over face Place PBE in metal tray or bar box Shake hair to remove excess O2 How would you start the flow of oxygen in PBE? - Answer-Pull off 'pull to actuate' ring in direction indicated What are the PDIs on PBE? - Answer-Stowage Quantity Green storage case intact Indicator BLUE (not pink or any other colour)What is the duration of the PBE? - Answer-15 minutes Who moves passengers and anything that could fuel a fire in the cabin? - Answer-2nd communicator How is the water glycol fire extinguisher discharged? - Answer-Twist handle clockwise as far as possible Hold bottle upright Press the trigger Test squirt Direct at base of fire Use in one continuous motion PDI for water glycol extinguisher - Answer-Stowage Quantity Wire seal on handle intact Cartridge visible in handle Duration and range of water glycol extinguisher - Answer-Range: 15 feet (approx. 5 metres) Duration: 15-30 seconds Precautions on water glycol extinguisher - Answer-Force of extinguisher may scatter burning loose material on initial discharge NEVER use on electrical fires How is the halon fire extinguisher discharged? - Answer-Remove pin Hold extinguisher upright Hand under handle and thumb on top of lever, squeeze the lever downward with thumb Test squirt Direct at base of fire Use in short, sharp burstsPDI for halon fire extinguisher - Answer-Stowage Quantity Pressure gauge must be in serviceable band Pin is secure in handle Range and duration of halon extinguisher - Answer-Range: 6-10 feet (approx. 2-3 metres) Duration: 12-14 seconds What does PBE stand for? - Answer-Portable Breathing Equipment How would you identify/locate the source of a fire? - Answer-Feel for heat using back of hand Be vigilant of unusual noises/smells Check for circuit breakers Visual sighting - smoke Abnormal operation or dissociated component failures