757_Fire_Protection.docx - ®n mm“ 3-757:11 System...

Info icon This preview shows pages 1–14. Sign up to view the full content.

View Full Document Right Arrow Icon
Image of page 1

Info icon This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
Image of page 2
Image of page 3

Info icon This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
Image of page 4
Image of page 5

Info icon This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
Image of page 6
Image of page 7

Info icon This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
Image of page 8
Image of page 9

Info icon This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
Image of page 10
Image of page 11

Info icon This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
Image of page 12
Image of page 13

Info icon This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
Image of page 14
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: ®n mm“ 3-757 :11 System Description Location of Components Introduction Thor's are a numbsrofccmponsnts associated wiflrths firs protection systems. This diagram ilhstrstosfl'ls Iocsfion of rnsJor components. M'U DEFEB‘TIDHIIID EITHEUBHIHG JFHHHI lIHEEI.'II'E|.I. IF'I' canon (“MINT DUCTLEIK Il'l'lmlllflfl ”WINNIE-II"! WET LEAK DEI'EG‘TIDM EHHHE DETEG'IIDII AND amour-mo arm-II rh- -HA¢EI.I.I MHHIA'I' FUD EAHW GEIFIFKTHEIIT DETECTION AMI EmHWBHIHG FIJIIHTIIEEK “WHY “DIE DEFEG’T‘JII CONTROLSMDIHDIL‘ITDBS FIIEEI'I'IM'EILIBIIEII mm lICIIHrrIEIFI'IEIstrzluertocfion systomssro instalod 1hr: - both onginss t shirts and pnsurnsfics ducts 'n fl'fl wing and trod“;r arcs IFIafarto firs Pmunafics chapter 35 foradd'rfima] irrfomrafion on wing and body duct look.) F'ro dstocfim and oxt'l'rgu'shirrg systoms arc 'nstsllsd for: - both onginss - firs APU I boflrcsrgomnpsrhnonts - Isvstu'iss F'ro dstocfim onryis providsdfu': r firs rr'a'ngssrwhoslvdls @ua FIRE PRDT ECTIDH 3-757 :2: Engine and AH] Firelflverheat Detection Detection Loops Loop Fa ul‘t Dull Loop Faults Dual the detector loopsare 'nstalled: I in each engine naoele I inthe APU om1partment Dual overheat detector loops are 'nstalled: I in each engine naoele In normal operation, bofl'l loops must sense the fire or merheatto activate the f're mamhgormerheatoaufions. Theengine fireroverheat loopsand APU fireloopsare oonfinuouslg.r monitored forfaults: I whena fault isdeteoted in oneoffl'le loopslthe system reoonfiguresitselfforsirgle loopoperafion I Whm the good loop senses a fi'el'mremeat oondifion: I tl'lfl appropriate f're warn'ng or merheat oaufion aofiuates Dual loop faults offi'eroverheat detectors are hdirated: I bythe EIGAS advisory message FIREJI DUI-fl" SYS I iluminationoffl'le system FAIL light I EIGE status messages ind'oat'ngthe imperative loops I The system FNL light and advisory message are resettable toalow rronitorirg of tl'lfl rema'ning systerrs. Q'm B -757 :7: Engine-IAPU Fire Switches Introduction The eng'ne and APUfiresw'rtchee are located on file center muscle. The mltdleeere mechanically locked in file IN pneifien. When a fi'e occurs: I a fight in file fire switch handle ilhn'l'netee {red} I file respective switch Belem-belly unlucluedarlzl rrneyfl'len be pulled out I In file event elect-ice] unlocking does not DCCUFI I menLrel unluck'ng leemompished by pueh'ng the WEI'I'HB switch ”fifi %/ F'll men FEE a'l‘l‘l'cIl FIIE I'I'ITI'.‘H "Dill-LIME“! uHLn-cxen Emu? umuunmmr 1W FIRE ML HEEL cum Engine and AF” Fire Extinguishing Introduction This diagram ihstratas the engine fire aflhguishing system. @ua FIRE PRDT ECTIDH 3-757 :2: Engine and APU Fire Extinguishing [Continued] Engine Fire Extimuis him APLI Fir- Extimuia him APLI Automatic Fire Extimuia him T'wofireext'nguisherbotflesareinstalledforenginef'recontrol.Whenafi'e isdetected, pulingthe Fire switch arrnsonedischargesquboneadlenghe fi'eext'nguisherbottle. Rotating the LEFT or RIGHT Eng'ne F're switch in eifl'ler d'I'eclJ'on selectsfl'le des'l'ed f're exb'nguisher to be used and discharges it into ‘lZl'Ifl assoc'ated engine. I One or both botfies may be discharged 'I1to eifl'lerengine. When a fire arb'nguisher has been used: I an Eng'ne F're Botlie Discharged light ihn‘r'nates I an EIGI-‘G advisory message ENG BTL 1 or2appears Discharge squibs can betested for fir'ng continuity by file Squib test switch. Onefireexfinguisher botlie isinstaled forAF'UcornparbTrent fire control. Whenafire is detected, puling ‘lZl'Ifl AF'LI Fire switch arrnsa discharge squib on the APU fire exthguisher bottle. RotafimtheAF'U F're switch in either direction dischargesthe fi'eext'nguisher 'nto ‘lZl'Ifl AF'Uoorrparb'nmt. When the fire erb'ngu isher has been used: I ‘lIl'Ifl APU BTL DISCH Light ihn'l'nates I an EICAS advisory message AFU ETL appears Tile discharge squib can be tested fiJrf'ring oont'nuity byfl'le Squibtest switch. During ground operations, us'ngthe AF'U Ground lControl F'anel located in the nose wheel nelarea: I ‘lZl'Ifl APU [an be shut down I ‘lZl'Ifl fire exb'nguisher bottle fired An APU fire on the ground with both eng'nes shutdown isauton'raficallyext'nguished. Tile fire signalcausesautorrafic discharge offl'le AF‘Uexthguisher botliea few seconds afierautorraficAF'U shutdown. 93...... 3-757 .TZTTT Cargo Compartment Fire Detection Intmductinn This diagra n1 ilustratas fl'la cargo mparhnmt fire datacfinn system. FWD GAHGD GDMPAFI’TII EMT AFT “EGO COMPAHTIIEHT fi-E El-fi 0 0 fi-E a—fi HAHDB‘I' FAN STANDB‘I' FAN INDICATES H0 FLOW 0263301253 g... FIRE PROT ECTIOH 3-757 :3: Cargo Compartment Fire Detection [Continued] Fire Detection System Test Hanna] Detector Fault Dual Dehctor Faults Asmolta detector cu'lsistsofa photoelectric oeIl filat senses file presenoe ofsmolte. Bofil file forward and aft cargo oornparlmentsare equipped wifildualsmolte detectors which sample file a'r for srrolta parfides Two fans draw a'r from each offile oorroarbnentsfilroughthe srnolce detectors. Only orle fan operates at a firne, iffile operafirlg fanfais, file ofiler fan starts autorrafioaly. There is no flight dad: irldioafion ofs'nglefan fathre; Insular, ifbofilfarls fail,the EICAE status message CARGO DET AIR isdisptsyad. The system is tested 1hr smoke detector operation: I autorrafitaly, iffile battery bus is unpowered, filen repoalered I manme by pushing file ENGIAF'LIICARGO test button on file FIREI‘OVHT test parlel Iocatedonthe cerrterconsole {Refer to F'I'eflrerheat Test section 351(1) During rlorrnaloperafiorl, bofil detectorsforthe corroarb'nent must serlse smoke to acfiyate cargo fl'e warnings When srnolta is detected: I file assoc'sted Cargo F'I'e Wam'ng light ihn'l'rlates I an EICAS wamirlg message FWD orAFT CARGO FIRE appears Due to file absence ofoorlt'nuousselftesfirlg, a smoke detector fault may or rray rlot generate an EICFE message. Ifan urldatected fault exists, arld a f're occurs, file operafional detectoroan not generate a fire wamirlg, Installer, a STATUS level message {CARGO DET 1 or 211m” be dispblyad. Ifafireexists, itoan be I.rerified by perfonTI'rlg a FIREJ'O‘IJHT systemtest located on file aft oenteroonfiol stand. Ifthe CARGOFIRElnIamingoorlfinuesafier releasirlgfilesuitdl,af'reexists F'erfonTI'rlgfile FIREJ’OVHT system test I reoonfigures file system to a sthe detector system ifa fault is detected. I enables file operating srrolre detectorto generate a FIRE warning. The faihreofdualoargo smoke detectors during test'ng, is indicated by: I file ECAS advisory rnesflge FIRE.I'O"I.I'I-|T SYS I iIuminationoffile System FAIL light I an EICJ’IE status message 'nditafirlg file irloperafiye smoke detectors Tlle System FAIL fight and advisory rnesmge are resatlable to alow rronitorirlg offile rerrls'n'ng systems. Cargo Compartment Fire Extinguishing Intmductiun This diagram ihstatas fl'la cargo mparhnmt fire and 'ngu ishi rig system. 1-HTLDIBEH-2 mil-11 ODIN?“ cam @ua FIRE PRDT ECTIDH B-757 if: Cargo Compartment Fire Extinguishing [Continued] Extinguishing Bottles No.1 Bottle No.23o'l‘till Discharge Squib Testing Two fi'e extinguishhg botfiesare 'nstaiied fDi'fil'fl oonfiolofthe formrdand aft cargo oorrparimenis. When a he isdetected ine'rfiler cargo oorrparfinent I file associated lIiiargo F'I'e IIul'lnl'anl'llg light ihn'l'nates F'ush'ngthe cu'respond'ngcargo lIiIon'Ip-arfinentl|'-‘ILRii.IE|:iswitch: I anTisfile associated {Flnd orAfi1oorrparfinentsquib in both ext'nguisher botfies The No. 1 fi'e exfinguisi'ler botfie is discharged into file oorrparfinentf'rst I by push'ngthe No. 1 BTL DISCstitch {guarded} I file No. 1 lIiiargo Fire Botfie DISCH light ihn'l'nates I anadvisory rnesflge CARGO BTL 1 is disphyned to 'ndicate iowext'nguisher bolfie pressure The No. 2 Flu exfinguisher bottle is manual}; discharged tater h-fight, ordur'ing approach: I to mainta'n a requi‘edoonoentrafion ofexfinguishirg agent 'l1 file affected ctmparfinerlt I a discharge light and advisory message appears forthe second bottle Discharge squibs can be tested forfir'ng oonfinuity b‘fti'fl Squid test switch. 9;”... 3-757 fl? Wheel Well Fire Detection Wheel Well Fire Asirqle detector loop is routed through bclh rrain gear wheel eels. When exoessiure Detection temperature issensed,awheel'wellfi'eearning isinifiated: I the he bel sounds I the Master Wem'ng light Ilum'nates I the discrete WHL WELL FIRE ight iIun'I'nates I an EICAS waming message WHEEL WELL FIRE is displayed No I'm extinguisher botfie is avaihbleforfilewheel eel. Wheel Well Test Rush 'I1g the WHL WELL test switch tests the wheel well the loop o'l'cuit continuity. Avaid test is 'ndioated when: I the llul'III-IL WELL FIRE ight iIurninates I Afaulty o'rcuit is indicated by: I faiure oFfl'Ie fire light to ihn'l'nate dur'ng test @ua FIRE PRDT ECTIDH B 757 Him-11 - “ram? Fi mime-meet Test Intmductiun Alumni: Tee-ting lrhnull Testing Tee-l Failure Thisdiagrem ihstreteet’rle FIREIOVHT TEST panel. The WHL WELL test switch and the ENGAF'UICARGDteetevfltchere Imetedenfll'repeneLThe perlelielmetederlthe centermrlenle. FIHEIDHHT TEST 'll'HL ENflflPW ”E“- mane Wheneledr'icel pmriein'rthlyepplied, ‘H'Ifl ftflbwingeystemeereeutorraficelytested: I eng'ne fire and mefileetdetectore I AF'LIfire detectors I cargo GD rrperh'nent smoke detectors F'reeeirlg file ENGIAF'UICARGD test switch manually 'n'rh'etee tests DE I enghefirefeverheet detector hope I AF'LIfire detectors I cergemrrperh'nmtemeke detectors Fulhreperableeyetemeereeutcmeficelymfhured fnrduel detectoreperet'nn: I appropriate fireend mertleetmmirlgeerflceufimecfiuate I firel'everheet EGAS rneemgeeeppeer Ife detecmrthjletoteet I 1113 affected system is reconfigured for single detector operation I a system stems rneemge appeareto 'nfnr'rn the crew effl'le mefFumfiDrl I normalfiremuerheetwamhgswillecfivateerflepprnprietefirefeverheat mes-ages wileppeer 'rFfl'Ie remaining detector senses-e fi'er'mrerheet condition Ifbufl'l detectorsfer'l to test I 1113 affected system wil turnenthe System FAIL light @ua B 7 7 25.1 1.112 FIRE PROT ECTIDH - 5 Jul 29, 19W Squib Test Squib'l'ast Exfinguisd'lardischrga squibsaratastadfnrfiMg mnfinu'rl‘y byfl'la SQUIB TEST switches and 'nditatcxs lightsnn 1119 m panel. Ga... 3-757 :22? Lavatory Fire Protection Lavatory Fire Therearetuotypesoffire detectorsinstalledon hutmhesth'rlhesa'rcraft One type Detection ofdetector has an integral thermal sensor. The other has no thermal sensor. AI other Bye-tun operationsarethesame. F'hotoelectrictype smoke detectors are 'I1stalled in each lavatory. Bch detector has its own buit-inahrm horn. lCircuit Break-re Smoke detectors 'n the forward, middle, and left rear hvatu'iesare powered from the ‘PASS ltill-‘tLL L‘ circuit breaker. Tile right rear hvamry is powered From the ‘PASS CALL R‘cirouit breaker. Both c'rcuit breakersareonthe Overhead F'anel, located inthe fight deck. Silence the Horn When smoke activates the horn, it wil silence only when the smoke has dispersed. Remove power by puling the c'rcuit breaker previously mentionedwilalso silence the horn. Tea-t Switch homer protects-the NormalJ'Test switch. The switch wil be in the test position iF it is moved approx'rnately one qua rter tum munter-docltwise. I In the Test PositionI the alarm should sound. lfthe NormalJ'Test switch is inadvertently moved to Test, the alarm can be sienoed by tuming the switch to Normal. A‘F'mer ON‘ fight in each detector wil blink every 1E -2t3| seconds indicat'ng normal operation. Lavatory Fire The iatetoryf're extinguishhg system isa fixed automatic system providirq fi'e Extinguishing exthguishhg capabiityto the hvatorytabinet assen'biy. Exfirguisl'lhg is aommplished bydischarging the tie exfirquishhg agent into the papertmneldisposal oonta'nerordirecfly underthe s'nlL A single heat activated ext'nguisher bottle oonta'ns til-o nozzles. Eadl nozle has a fusble tip which melts due to an merheat orf'l'e outtnlzlitionI dischargirg the bottle. Temperature Atemperature indicator is located inside the lavatorytabinet This indicator oonta'ns Indicator fourheatsensitive patcheswhidlwilcharqeimlorfromgrayto black wl'lenexposedto high temperature. Fggm B '7 5 7 :62: Controls and Indicators Location of Controls and Indicators Introduction Thisciagra'n”whats-51inlocafionoffiropotoofimmh'dsarflirflifiltminfilofimt dock. HELD 'I'EEI'I' ,— Iz-AR-ao—I l—EHEI—I PM:1 Arr I. It l—iuin mus—I 11:11 no L H BLIDE 15312 If HEB-E HUB TEST PANEL I. FIIEL {IHTMIL R II'IJI Iill'l'flf FUEL GOHTHCIL moo-m1- Ttrr Iflllulll'l.“ ""1 Fl FIHEFO'L‘EFI HEATTEBT PANEL I-BTL ola-oH-z ENGINE FIFIE C'DNTFIDL PANEL CAHHWIPU FIFIE GDHTHDL PANEL om: 1: 1 It o o r I n I ...
View Full Document

{[ snackBarMessage ]}

What students are saying

  • Left Quote Icon

    As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

    Student Picture

    Kiran Temple University Fox School of Business ‘17, Course Hero Intern

  • Left Quote Icon

    I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

    Student Picture

    Dana University of Pennsylvania ‘17, Course Hero Intern

  • Left Quote Icon

    The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

    Student Picture

    Jill Tulane University ‘16, Course Hero Intern