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1、1,FIRE AND OVERHEAT PROTECTION,2,PROTECTED AREAS,CARGO BAY,LAVATORY,APU,ENGINE,WHEELWELLS,BLEED AIR,3,TYPES OF PROTECTION,4 Fire/Overheat Detection systems Engine Jetpipe and pylons APU Main Landing Gear Bleed Air 4 Fire Extinguishing systems - Engine - APU - Cargo - Lavatory 2 Smoke Detection Syste
2、ms Cargo Bay Lavatory,4,FIRE/OVERHEAT DETECTION How it works,Detection loops Continuous Loops or wires are strung throughout the protected area. Wires change in resistance when heat is applied. When the resistance reaches a specified amount, a warning is issued.,5,Pylon Sensors,6,Fixed Core Cowl Sen
3、sors,7,Engine Sensors,8,Jet Pipe Sensors,9,Pylon Sensors,Jet Pipe Sensors,Fixed Core Cowl Sensors,Engine Sensors,10,Pylon Sensors,Jet Pipe Sensors,Fixed Core Cowl Sensors,Engine Sensors,LOOP A SENSORY CIRCUIT,11,Pylon Sensors,Jet Pipe Sensors,Fixed Core Cowl Sensors,Engine Sensors,LOOP B SENSORY CIR
4、CUIT,12,Pylon Sensors,Jet Pipe Sensors,Fixed Core Cowl Sensors,Engine Sensors,LOOP A/B SENSORY CIRCUIT,Dual Detection Loops This guards against false detection Aircraft can be be dispatched with one one loop inop.,13,FDCU,Fire Detection Control Unit Monitors the loops Compares the resistance of Loop
5、 A and B Sends a FIRE/OVHT signal to the EICAS Discriminates between a real fire and a false fire,14,ENGINE FIRE INDICATIONS,MASTER WARNINGS,FIRE LIGHTS,EICAS MESSAGE,FIRE BELL,15,Engine Fire Extinguishers,2 Fire Bottles- located in the aft equipment bay. The Bottles are filled with Halon and Nitrog
6、en. 2 explosive squibs are installed on each bottle. If needed, both bottles can be fired into one engine.,16,RT ENGINE FIRE IN FLIGHT,RT ENG FIRE,MASTER CAUTION,FIRE BELL,17,ENGINE FIRE PROCEDURE,1. Master WarningPush (silences Fire Bell),FIRE BELL,18,ENGINE FIRE PROCEDURE,2. Thrust LeverIdle,19,EN
7、GINE FIRE PROCEDURE,3. Thrust LeverShutoff,20,ENGINE FIRE PROCEDURE,4. Engine Fire Switch-Push,21,What happens when you push a Fire Switch?,RH ENG FIRE PUSH,APU FIRE PUSH,BOTTLE ARMED PUSH TO DISCH,BOTTLE 2 ARMED PUSH TO DISCH,22,What happens when you push a Fire Switch?,RH ENG FIRE PUSH,APU FIRE PU
8、SH,BOTTLE ARMED PUSH TO DISCH,BOTTLE 2 ARMED PUSH TO DISCH,FIRE BELL,23,What happens when you push a Fire Switch?,RH ENG FIRE PUSH,APU FIRE PUSH,BOTTLE ARMED PUSH TO DISCH,BOTTLE 2 ARMED PUSH TO DISCH,FIRE BELL,24,What happens when you push a Fire Switch?,ENG FIRE SWITCH-PUSH- -Both fire bottle squi
9、bs are armed and bottle lights illuminate -Fuel Feed Shut Off Valve closes -Bleed Air Shut Off Valve closes -Hydraulic Shutoff Valve closes -Engine-driven Generator is tripped off,RH ENG FIRE PUSH,APU FIRE PUSH,BOTTLE ARMED PUSH TO DISCH,BOTTLE 2 ARMED PUSH TO DISCH,FIRE BELL,25,5. Fuel Boost Pump O
10、ff 6. Wait 10 seconds, if fire Indications persist 7. Fire one bottle 8. Wait 30 seconds, if fire persists-fire second bottle 9. Return To Check List (RTCL),ENGINE FIRE PROCEDURE (Cond),26,REVIEW,What prevents a false engine fire light? How many engine fire bottles are there and where are they locat
11、ed? What are the indications of an engine fire? What happens when you push an Engine Fire Switch?,27,APU FIRE,RH ENG FIRE PUSH,APU FIRE PUSH,BOTTLE ARMED PUSH TO DISCH,BOTTLE 2 ARMED PUSH TO DISCH,28,APU Fire Protection,2 Loop system 1 Halon fire bottle with 2 squibs In flight If a fire is detected
12、- the APU shuts down automatically. The crew must discharge the bottle. On the Ground If a fire is detected - the APU shuts down automatically. In 5 seconds the APU bottle fires and an external horn sounds,29,BOTTLE ARMED PUSH TO DISCH,BOTTLE 2 ARMED PUSH TO DISCH,RH ENG FIRE PUSH,APU FIRE PUSH,BOTT
13、LE 2 ARMED PUSH TO DISCH,BOTTLE ARMED PUSH TO DISCH,APU FIRE WARNING & CONTROL PANEL,White when armed,30,BOTTLE ARMED PUSH TO DISCH,BOTTLE 2 ARMED PUSH TO DISCH,RH ENG FIRE PUSH,APU FIRE PUSH,BOTTLE 2 ARMED PUSH TO DISCH,BOTTLE ARMED PUSH TO DISCH,APU FIRE WARNING & CONTROL PANEL,RED during FIRE WAR
14、N TST of fire detection system RED when fire is detected in APU compartment,31,BOTTLE ARMED PUSH TO DISCH,BOTTLE 2 ARMED PUSH TO DISCH,RH ENG FIRE PUSH,APU FIRE PUSH,BOTTLE 2 ARMED PUSH TO DISCH,BOTTLE ARMED PUSH TO DISCH,APU FIRE WARNING & CONTROL PANEL,When pushed *Arms the APU fire bottle squibs
15、*Closes the APU fuel shut-off valve *Shuts Down the APU *Closes the APU Load Control Valve,32,BOTTLE ARMED PUSH TO DISCH,BOTTLE 2 ARMED PUSH TO DISCH,RH ENG FIRE PUSH,APU FIRE PUSH,BOTTLE 2 ARMED PUSH TO DISCH,APU FIRE WARNING & CONTROL PANEL,Lights up when squibs on the APU fire bottle are operational,BOTTLE ARMED PUSH TO DISCH,33,BOTTLE ARMED PUSH TO DISCH,BOTTLE 2 ARMED PUSH TO DISCH,RH ENG FIRE PUSH,APU FIRE PUSH,BOTTLE 2 ARMED PUSH TO DISCH,BOTTLE ARMED PUSH TO DIS
