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CHAPTER 26 Fire Protection
26-CONTENTS Page 7 D633W101-BEJ Jan 05/2002
FIRE PROTECTION -INTRODUCTION
Purpose The fire protection systems monitor the airplane for these conditions: * Fire
* Pneumatic duct leak.
The fire protection systems also include fire extinguishers. Fire/Overheat Detection The airplane has these fire/overheat detection systems: * Engine fire detection
* Lavatory smoke detection
* Lower cargo compartment smoke detection
* Wheel well fire detection
* Duct leak and overheat detection
* Electrical and electronic (E/E) cooling smoke detection.
Extinguishing The airplane has these fire extinguishing systems: * Engine fire extinguishing
* Lavatory waste compartment fire extinguishing
* APU fire extinguishing
* Lower cargo fire extinguishing
* Portable fire extinguishers. Abbreviations and Acronyms * ACIPS -airfoil and cowl ice protection system
* ACMF -airplane conditioning monitoring function
* ACMS -airplane conditioning monitoring system
* AGS -air ground system
* AIMS -airplane information management system
* APU -auxiliary power unit
* APUC -auxiliary power unit controller
* ARINC -Aeronautical Radio, Inc.
* ASCPC -air supply and cabin pressure controller
* ASG -ARINC signal gateway
* BITE -built-in-test-equipment
* CACP -cabin area control panel
* CMCS -central maintenance computing system
* CSS -cabin services system
* CSCP -cabin system control panel
* DLODS -duct leak and overheat detection system
* ECS -environmental control system
* EDP -engine-driven pump
* EEU -ELMS electronic unit
* EICAS -engine indicating and crew alerting system
* ELMS -electrical load monitoring system
26-00-00 Page 1 D633W101-BEJ Sep 05/2002
FIRE PROTECTION -INTRODUCTION
* FCR -flight crew rest
* LED -light emitting diode
* LRU -line replaceable unit
* MAT -maintenance access terminal
* MD&T -master dim and test
* MEC -main equipment center
* MFD -multi-function display
* OEU -overhead electronics unit
* OPAS -overhead panel ARINC 629 system * ovht -overheat * ovrd -override
* PSEU -proximity switch electronics unit
* WEU -warning electronic unit
* WES -warning electronic system
* WOW -weight-on-wheels
EFFECTIVITY BEJ ALL 26-00-00 Page 2 D633W101-BEJ Sep 05/2002
777 AIRCRAFT MAINTENANCE MANUAL
FIRE PROTECTION -INTRODUCTION
EFFECTIVITY BEJ ALL 26-00-00 Page 3 D633W101-BEJ Jan 05/2002
FIRE PROTECTION -SYSTEM TESTS
General These are the system tests for the fire extinguishing system: * Cargo squibs
* Engine and APU squibs.
Cargo Squibs WARNING: KEEP PERSONS AWAY FROM THE CARGO COMPARTMENT DURING THIS TEST. IF A SQUIB FIRES ACCIDENTALLY, THE FIRE BOTTLE CAN RELEASE ITS CONTENTS AND CAUSE INJURIES. This test supplies a small current to these squibs: * Cargo compartment fire extinguishing bottles
* Cargo compartment fire extinguishing flow valves
* Engine fire extinguishing bottles
* APU fire extinguishing bottle.
The test makes sure that there are no open circuits in the cargo compartment fire extinguishing squibs and their related wiring. Engine and APU Squibs WARNING: KEEP PERSONS AWAY FROM THE ENGINE AND APU DURING THIS TEST. IF A SQUIB FIRES ACCIDENTALLY, THE FIRE BOTTLE CAN RELEASE ITS CONTENTS AND CAUSE INJURIES. www.aero.cn 航空翻译 www.aviation.cn 本文链接地址：777 AMM 飞机维护手册 防火 Fire Protection
