Fire Protection Flashcards
Each engine and APU have two
Continuous fire and overheat gas detection loops
If one continuous engine fire and overheat detection loop is inoperative
the other loop will continue to operate
When a break in both loops within a 5 second period,
a fire warning will be triggered
The fire extinguishing system bottles for each engine have
two squibs to discharge the agent. Each squib has dual electrical supply.
Lifting the guard and pressing an engine FIRE pb releases it to the out position. This action causes:
Silences the CRC and arms the fire extinguisher squibs; closes the low-pressure fuel, hydraulic fire shut off, engine bleed and pack flow control valves; removes power to the FADEC and deactivates the Integrated Drive Generator.
There is no fire suppression for avionics bay. Avionics has only:
A smoke detection system.
When avionics bay smoke is detected, the ECAM SMOKE AVNCS VENT SMOKE Warning is triggered and:
The CRC sounds, MASTER WARN light flashes, SMOKE light illuminates red on the overhead VENTILATION panel.
Lavatory smoke warnings are sent to the flight crew via
ECAM warning, and to the cabin crew via CIDS.
Lavatory waste bin fires are automatically extinguished by
halon from individual, adjacent extinguisher bottles.
Bottle 2 for cargo extinguisher lasts
260 min
Cargo compartment smoke detection system has two
Ionization-type smoke detectors on a dual loop system.
Cargo compartment is monitored for smoke
By Smoke Detection Control Unit
Fire bottle discharge for the cargo compartment is manually
controlled by crew.
