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S12 sprinkler test Practice Questions and Answers 100% Guaranteed Pass, Exams of Nursing

San Francisco State University (SFSU)Nursing

S12 sprinkler test Practice Questions and Answers 100% Guaranteed Pass This document provides a full set of practice questions and answers for the FDNY S12 Citywide Sprinkler System Certificate of Fitness exam. It covers key areas such as sprinkler components, alarm systems, water supply, valve types, testing and inspection procedures, and NYC Fire Code regulations. With 100% verified content designed to reflect the actual exam, this guide is ideal for candidates seeking a guaranteed path to passing the S12 certification.

Typology: Exams

2024/2025

Available from 06/02/2025

Nurseexcel
Nurseexcel 🇺🇸

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S12 sprinkler test Practice Questions and Answers
100% Guaranteed Pass
1. whatqisqaqALARMqNOTIFICATIONqAPPLIANCE:qAqfireqalarmqsystemqcomponent,qsuchqasqaqbel
l,qhorn,qspeaker,qlight,qtextqdisplayqorqvibrationqdeviceqthatqissuesqanqaudible,qtactile,qand/orqv
isualqalert.
2. whatqisqaqAUTOMATICqBALLqDRIPq-
:qAnqautomaticqdrainqvalveqhorizontallyqinstalledqatqtheqlowqpoint
inqtheqpipingqbetweenqtheqlowerqcheckqvalveqandqtheqFireqDepartmentqconnectionqofqautom
aticqsprinklerqsystems.qWaterqpressureqfromqaqFireqDepartmentqpumperqautomaticallyqclos
esqthisqvalve.qItqautomaticallyqre-
opensqwhenqpressureqceases,qpermittingqthisqpipingqtoqdrainqandqtherebyqpreventingqfreezi
ng
3. whatqisqaqCENTRALqSTATION:qAqfacilityqthatqreceivesqalarmqsignalsqfromqaqprotectedqprem
isesqandqretransmitsqorqotherwiseqreportsqsuchqalarmqsignalsqtoqtheqdepartment.
4. WHATqISqAqCOMBINATIONqSTANDPIPEqANDqSPRINKLERqSYSTEM:qAqsystem
whereqtheqwaterqpipingqservicesqbothq2½qin.q(65qmm)qoutletsqforqfireqdepartmentquseqandqoutle
tsqforqautomaticqsprinklers.
5. whatqisqaqCONTROLqMODEqSPECIFICqAPPLICATIONqSPRINKLERSq(CMSA)
-
:qControlqmodeqsprinklerqsystemsqareqdesignedqtoqcontrolqaqfirequntilqitsqoriginalqfuelqsourceqisq
depletedqorquntilqfire-
fightingqactivitiesqcanqcommence.qAqfireqisqcontrolledqbyqcoolingqtheqceiling-
levelqairqtemperatures,qreducingqtheqfire'sqrateqofqheatqreleaseqandqpre-
wettingqadjacentqcombustibles.
6. WHATqISqAqMASTERqPRESSUREqREDUCINGqVALVEq-:qAqpressureqreducing
valveqinstalledqtoqregulateqpressuresqinqanqentireqfireqprotectionqsystemqand/orqstandpipeqs
ystemqzone.
7. whatqisqaqFireqGuardq?:qTheqimpairmentqcoordinatorqorqotherqbuildingqstaffqtrainedqandqknowl
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Download S12 sprinkler test Practice Questions and Answers 100% Guaranteed Pass and more Exams Nursing in PDF only on Docsity!

S12 sprinkler test Practice Questions and Answers

100% Guaranteed Pass

  1. whatqisqaqALARMqNOTIFICATIONqAPPLIANCE:q Aqfireqalarmqsystemqcomponent,qsuchqasqaqbel l,qhorn,qspeaker,qlight,qtextqdisplayqorqvibrationqdeviceqthatqissuesqanqaudible,qtactile,qand/orqv isualqalert.
  2. whatqisqaqAUTOMATICqBALLqDRIPq- :q Anqautomaticqdrainqvalveqhorizontallyqinstalledqatqtheqlowqpoint inqtheqpipingqbetweenqtheqlowerqcheckqvalveqandqtheqFireqDepartmentqconnectionqofqautom aticqsprinklerqsystems.qWaterqpressureqfromqaqFireqDepartmentqpumperqautomaticallyqclos esqthisqvalve.qItqautomaticallyqre- opensqwhenqpressureqceases,qpermittingqthisqpipingqtoqdrainqandqtherebyqpreventingqfreezi ng
  3. whatqisqaqCENTRALqSTATION:q Aqfacilityqthatqreceivesqalarmqsignalsqfromqaqprotectedqprem isesqandqretransmitsqorqotherwiseqreportsqsuchqalarmqsignalsqtoqtheqdepartment.
  4. WHATqISqAqCOMBINATIONqSTANDPIPEqANDqSPRINKLERqSYSTEM:q Aqsystem whereqtheqwaterqpipingqservicesqbothq2½qin.q(65qmm)qoutletsqforqfireqdepartmentquseqandqoutle tsqforqautomaticqsprinklers.
  5. **whatqisqaqCONTROLqMODEqSPECIFICqAPPLICATIONqSPRINKLERSq(CMSA)

:q** Controlqmodeqsprinklerqsystemsqareqdesignedqtoqcontrolqaqfirequntilqitsqoriginalqfuelqsourceqisq depletedqorquntilqfire- fightingqactivitiesqcanqcommence.qAqfireqisqcontrolledqbyqcoolingqtheqceiling- levelqairqtemperatures,qreducingqtheqfire'sqrateqofqheatqreleaseqandqpre- wettingqadjacentqcombustibles.

  1. WHATqISqAqMASTERqPRESSUREqREDUCINGqVALVEq-:q Aqpressureqreducing valveqinstalledqtoqregulateqpressuresqinqanqentireqfireqprotectionqsystemqand/orqstandpipeqs ystemqzone.
  2. whatqisqaqFireqGuardq?:q Theqimpairmentqcoordinatorqorqotherqbuildingqstaffqtrainedqandqknowl

edgeableqinqconductingqaqfireqwatchqmayqconductqaqfireqwatchqinqlieuqof aqfireqguardqduringqtheqinitialq 4 qhoursqofqaqplannedqremovalqfromqservice,qorqafterqdiscoveryqofq anqunplannedqout-of- serviceqcondition,qprovidedqthatqtheqfloorqorqareaqinqwhichqtheqfireqprotectionqsystemqisqoutqofq serviceqdoesqnotqexceedq50,000qsquareqfeet.qAqsufficientqnumberqofqfireqguardsqshallqbeqprovid edqsuchqthatqeachqfloorqorqareaqinqwhichqtheqfireqprotectionqsystemqisqoutqofqserviceqisqpatrolledq atqleastqonceqanqhour.

  1. WhatqisqanqImpairedqEquipment:?:q Undergroundqserviceqmains,qwaterqstorageqtanks,qFireq Departmentqconnections,qcontrolqvalves,qfireqandqorqboosterqpumps,qthatqareqoutqofqserviceqan dqareqconsideredqvitalqtoqpartqofqtheqsystemqthatqareqrequiredqtoqbeqtaggedqfollowingqprocedur esqoutlinedqinqChapterq 15 qofqNFPAq#25q 2011 qEd.
  2. WhatqisqProtectionqofqSprinklerqSystems?:q Allqpartsqofqanqautomaticqsystemqexposedqtoqfr eezingqtemperaturesqshallqbeqprotectedqfromqfreezingqorqinqlieuqthereof,qanqautomaticqdryqpipeq systemqorqaqsystemqfilledqwithqaqnonfreezing,qnoncombustibleqsolutionqshallqbeqused.qWhenqaq systemqfilledqwithqaqnonfreezingqsolutionq.

dqoutqofqtheqfusedqsprinklersqheads.

  1. WhatqisqaqDRYqSPRINKLER?:q Aqsprinklerqsecuredqinqanqextensionqnippleqthatqhasqaqsealqa tqtheqinletqtoqpreventqwaterqfromqenteringqtheqnipplequntilqtheqsprinklerqoperates.qMayqbeqcon figuredqwithqanquprightqpendentqorqsidewallqsprinkler.
  2. WHATqISqAqDISCHARGEqDEVICE?:q Aqdeviceqdesignedqtoqdischargeqwaterqorqfoam- waterqsolutionqinqaqpredetermined,qfixed,qorqadjustableqpattern.qExamplesqinclude,qbutqareqn otqlimitedqto,qsprinklers,qsprayqnozzles,qandqhoseqnozzles
  1. WHATqISqAqEARLYqSUPPRESSIONqFASTqRESPONSEqSPRINKLERq(ESFR)?- :q Aqtypeqofqfastqresponseqsprinklerqthatqisqlistedqforqitsqcapabilityqtoqprovideqfireqsuppressionq ofqspecificqhighqchallengeqfireqhazards.
  2. WHATqISqAqEXTRAqLARGEqORIFICEqSPRINKLERSq(ELO)?:q Aqsprinklerqhead withqandqorificeqsizeqequalqtoqorqgreaterqthanq1".qThisqsprinklerqisqusedqforqprotectionqofqhighqpil edqstorageqinqwarehousesqandqlessqpressureqisqrequiredqtoqachieveqaqgivenqdischargeqdensity.
  3. WHATqISqAqEXTENDEDqCOVERAGEqSPRINKLERS?:q ...Aqtypeqofqsprayqsprin- klerqwithqaqmaximumqareaqcoverageqofq 400 qsqqftq(q 20 qftqbyq 20 qftqspacingqbetweenqsprinklerq)q forqlightqhazardqoccupanciesqtoqaqmaximumqofq 144 qsquareqfeetq 12 qftqbyq 12 - ftqsprinklerqspacingqbetweenqsprinkler)qforqextraqhazardqoccupancies.
  4. WHATqISqAqEXTENDEDqCOVERAGEqSPRINKLERS?:q Aqtypeqofqsprayqsprinklerqwithqaqmaximu mqareaqofqcoverageqofq 400 qsquareqfeetq(20qfootqbyq 20 qfootqspacingqbetweenqsprinklers)qforqlig htqhazardqoccupanciesqtoqaqmaximumqofq 144 qsquareqfeetq(12qfootqbyq 12 qfootqspacingqbetwee nqsprinklers)qforqextraqhazardqoccupancies.
  5. WHATqISqAqFIREqALARMqSYSTEM?:q Anyqsystem,qincludingqanyqinterconnectedqfireqalarmqsu b-system,qofqcomponentsqandqcircuitsqarrangedqtoqmonitorqandqannun- qciateqtheqstatusqofqfireqalarmqorqsupervisoryqsignal-initiatingqdevices
  6. WHATqISqAqFIREqDEPARTMENTqCONNECTION?:q Aqconnection,qnormallyqonqtheqexteriorqo fqtheqbuilding,qthroughqwhichqtheqfireqdepartmentqcanqpumpqsupple- qmentalqwaterqintoqtheqsprinklerqsystem,qstandpipe,qorqotherqsystemqfurnishingqwaterqforqfireqe xtinguishmentqtoqsupplementqexistingqwaterqsupplies.q(FormerlyqknownqasqSiameseqconnecti on.)
  7. WHATqISqAqFIREqEXTINGUISHINGqSYSTEM?:q Anqapprovedqsystemqofqdevicesqandqequipme ntqwhichqdetectsqaqfireqandqdischargesqanqapprovedqfireqextinguishingqagentqontoqorqinqtheqare aqofqaqfire.qSuchqtermqincludesqautomaticqsystemsqand,qwhereqsuchqsystemsqareqauthorizedqbyq thisqcodeqorqtheqBuildingqCode,qmanuallyqactivatedqsystems.
  8. WHATqISqAqFIREqHYDRANT?:q Aqvalveqconnectionqonqaqwaterqsupplyqsystemqhavingqoneqo rqmoreqoutletsqandqthatqisqusedqtoqsupplyqhoseqandqfireqdepartmentqconnectionsqwithqwater .
  9. WHATqISqAqFIREqPROTECTIONqSYSTEM?:q Approvedqdevices,qequipmentqandqsystemsqorqc ombinationsqofqsystemsqusedqtoqdetectqaqfire,qactivateqanqalarm,qextinguishqorqcontrolqaqfire,q

connectedqtoqtheqpublicqundergroundqwaterqsupplyqpipingqorqaqstaticqwaterqsourceq(e.g.,qtank, qreservoir,qlake).qTheqpumpqprovidesqwaterqflowqatqhigherqpressureqtoqtheqsprinklerqsystemqrise rsqandqhoseqstandpipes.qAqpumpqusedqonlyqtoqfillqaqtankqisqnotqaqfireqpump.qTheqfollowingqfireqp umpsqareqrequiredqtoqbeqmaintainedqinqaccordanceqwithqtheqNYCqFireqCode:

  1. WHATqISqAqFIREqPUMP,qAUTOMATICqSTANDPIPE?:q Aqfireqpumpqlocatedqat orqbelowqstreetqlevelqthatqsuppliesqtheqlowerq 300 qfeetqofqaqstandpipeqsystemqorqaqcombinedq standpipeqandqsprinklerqsystem.
  2. WHATqISqAqFIREqPUMP,qFOAM?:q Aqfireqpumpqusedqtoqboostqwaterqsupplyqpressuresqinqaqf ireqprotectionqsystemqwhereqsuchqsystemqusesqfirefightingqfoamqasqanqadditive.
  3. WHATqISqAqFIREqPUMP,qLIMITEDqSERVICE?:q Aqfireqpumpqwithqaqmotorqratingqnotqexceedin gq 30 qhpqandqutilizingqaqlimitedqserviceqfireqpumpqcontroller.
  4. WHATqISqAqFIREqPUMP,qSPECIALqSERVICE?:q Aqfireqpumpqthatqisqlocatedqaboveqstreetqlevelqan dqthatqreceivesqitsqwaterqsupplyqfromqaqgravityqtankqorqsuctionqtankqsupplyingqwaterqtoqfireqspri nklerqsystemqand/orqFireqDepartmentqhoseqoutlets.
  5. WHATqISqAqFIREqPUMP,qSPRINKLERqBOOSTERqPUMP?:q Aqfireqpumpqthat suppliesqsprinklerqsystemsqonly.
  6. WHATqISqAqFIREqPUMP,qWATERqMISTqSYSTEM?:q Aqfireqpumpqusedqtoqboostqwaterqsupplyqp ressuresqinqaqfireqprotectionqsystemqwhereqsuchqsystemqutilizesqwaterqmistingqtechnology.
  7. WHATqISqAqGLASSqBULBqSPRINKLER?:q Aqsprinklerqoperatedqbyqheatqbreakingqaqglassqbulbqfil ledqwithqaqnonqfreezingqliquidqwithqdiametersqthatqvaryqfromq3mmqforqquickqresponseqsprinkle rsqtoq5mmqforqstandardqresponseqsprinklers.
  8. WHATqISqAqHOSEqVALVE?:q Theqvalveqtoqanqindividualqhoseqconnection.
  9. WHATqISqAqHYDRAULICqPLACARD?:q Aqsignqattachedqtoqaqhydraulicallyqcalcu- qlatedqsprinklerqsystemqindicatingqtheqdesignqdensity,qrequiredqgallonsqperqminuteqandqpressure qforqtheqsystemqtoqoperateqproperly.
  10. WHATqISqAqHYDRAULICALLYqCALCULATEDqSYSTEMS?:q Aqmethodqofqsizing automaticqsprinklerqpipingqusingqaqprescribedqamountqofqwaterqtoqbeqdistributedqoverqaqspecifi cqarea.
  11. WHATqISqAqIMPAIRMENT?:q Aqconditionqwhereqaqfireqprotectionqsystemqorqunitqorqportionqt hereofqisqoutqofqorder,qandqtheqconditionqcanqresultqinqtheqfireqprotectionqsystemqorqunitqnotqf unctioning

inqaqfireqevent.

  1. WHATqISqAqIMPAIRMENTqCOORDINATOR?:q Theqpersonqresponsibleqforqensur- qingqthatqproperqsafetyqprecautionsqareqtakenqwhenqaqfireqprotectionqsystemqisqplacedqoutqofqse rvice.

asqtheqsprinklers.

  1. WHATqISqAqPERSONALqSUPERVISION?:q SupervisionqbyqtheqholderqofqaqFDNYqCertificateqofq Fitnessqwhoqisqrequiredqtoqpersonallyqpresentqonqtheqpremises,qorqother

proximateqlocationqacceptableqtoqtheqdepartment,qwhileqperformingqtheqdutiesqforqwhichqth eqcertificateqisqrequired.

  1. WHATqISqAqPRESSUREqCONTROLqVALVE?:q Aqpilotqoperatedqpressureqreduc- qingqvalveqthatqmayqbequsedqwithqaqfireqorqboosterqpumpqdesignedqforqtheqpurposeqofqpreventin gqtheqincomingqwaterqsupplyqpressureqfromqdroppingqbelowqaqsetqpressure.
  2. WHATqISqAqPRESSURE-REDUCINGqVALVE?:q Aqvalveqdesignedqforqtheqpur- qposeqofqreducingqtheqdownstreamqwaterqpressurequnderqbothqflowingq(residual)qandqnon- flowingq(static)qconditions.
  3. WHATqISqAqPRESSUREqRELIEFqVALVE?:q Aqvalveqdesignedqforqtheqpurposeqofqreleasingqexce ssqairqorqwaterqpressureqfromqtheqFireqProtectionqPipingqSystem.
  4. WHATqISqAqPRESSUREqTANK?:q Aqtankqusingqairqpressureqtoqsupplyingqwaterqforqwater- basedqfireqprotectionqsystems.qTankqcontentsqtoqbeqmaintainedqatqoneqthirdqairqtoqtwoqthirdsqwa ter
  5. WHATqISqAqQUICKqRESPONSEqSPRINKLERqHEAD?:q Aqsprinklerqhavingqa fusibleqlinkqwithqaqresponseqtimeqindexq(RTI)qofq 50 qorqless.
  6. WHATqISqAqRECESSEDqSPRINKLER/:q Aqsprinklerqinqwhichqallqorqpartqofqtheqbody,qotherqt hanqtheqshankqthread,qisqmountedqaboveqtheqceiling
  7. WHATqISqAqRESIDENTIALqSPRINKLER?:q Aqtypeqofqfastqresponseqsprinklerqthatqhasqbeenqspe cificallyqtestedqtoqenhanceqsurvivabilityqinqtheqroomqofqfireqoriginqandqlistedqforquseqinqdwelling qunits.
  8. WHATqISqAqRESPONSEqTIMEqINDEXq(RTI)?:q Aqmeasurementqofqtheqthermalqsensitivityqofq aqsprinklerqheadqexpressedqinq(meters-seconds)q1/2.
  9. WHATqISqAqSPRINKLERqIDENTIFICATIONqNUMBERq(SIN)?:q Sprinklersqman- ufacturedqafterqJan.q1,q 2000 qareqrequiredqtoqbeqmarkedqtoqidentifyqperformanceqcharacterist ics.
  10. WHATqISqAqSUPERVISORYqSIGNAL?:q Aqsignalqindicatingqtheqneedqforqactionqinqconnectio nqwithqtheqsupervisionqofqguardqtours,qfireqextinguishingqsystemsqorqequipment,qfireqalarmqsy stemsqorqtheqmaintenanceqfeaturesqofqrelatedqsystems.
  11. WHATqISqAqSIDEWALLqSPRINKLER?:q Aqsprinklerqhavingqspecialqdeflectorsqthatqareqdesi gnedqtoqdischargeqmostqofqtheqwaterqawayqfromqtheqnearbyqwall.
  12. WHATqISqAqSMALLqORIFICEqSPRINKLERS?:q Aqsprinklerqheadqwithqandqorificeqsizeqsmallerqt
  1. WHATqISqAqSPRINKLERqSYSTEM?:q Aqfireqextinguishingqsystem,qotherqthanqaqmistqfireqexti nguishingqsystemqthatqutilizesqwaterqasqtheqextinguishingqagent.
  2. WHATqISqAqSTANDARDqRESPONSEqSPRINKLERqHEAD?:q Aqsprinklerqhaving aqfusibleqlinkqwithqaqresponseqtimeqindexq(RTI)qofq 80 qorqmore.
  3. WHATqISqAqSUPERVISORYqSIGNAL-INITIATINGqDEVICE?:q Anqinitiatingqde- vice,qsuchqasqaqvalveqsupervisoryqswitch,qwaterqlevelqindicator,qorqlow- airqpressureqswitchqonqaqdry-pipeqorqpre- actionqsprinklerqsystem,qthatqtriggersqaqsupervisoryqsignal.
  4. WHATqISqAqAUTOMATICqPRESSUREqMAINTENANCEqDEVICE?:q Maintains pneumaticqpressureqonqtheqpipingqsystemqsetqtoqspecificqlimitsqbyqcontrollingqaqplantqairqsyste m,qaqsingleqairqcompressor,qorqaqnitrogenqsupply.
  5. WHATqISqAqTESTING?:q Aqprocedurequsedqtoqdetermineqtheqstatusqofqaqsystemqasqintended qbyqconductingqperiodicqphysicalqchecksqonqwaterqbasedqfireqprotectionqsystemsqsuchqasqwat erflowqtests,qfireqpumpqtests,qalarmqtests,qandqtripqtestsqofqdryqpipe,qdeluge,qorqpreactionqvalv es.qTheseqtestsqfollowqupqonqtheqoriginalqacceptanceqtestqatqintervalsqspecifiedqinqtheqappropr iateqchapterqofqNFPAq#25,q 2011 qedition
  6. WHATqISqAqUPRIGHTqSPRINKLER?:q Aqsprinklerqdesignedqtoqbeqinstalledqinqsuchqaqwayqt hatqtheqwaterqsprayqisqdirectedqupwardsqagainstqtheqdeflector.
  7. WHATqISqAqWATERqSPRAY?:q Waterqinqaqformqhavingqaqpredeterminedqpattern,qparticleqsize, qvelocity,qandqdensityqdischargeqfromqspeciallyqdesignedqnozzlesqorqdevices.
  8. WHATqISqAqWATERqSUPPLY?:q Aqsourceqofqwaterqthatqprovidesqtheqflowsq[gal/minq(L/min)]q andqpressuresq[psiq(bar)]qrequiredqbyqtheqwater-basedqfireqprotectionqsystem.
  9. WHATqISqAqWETqPIPEqSPRINKLERqSYSTEM?:q Aqsprinklerqsystemqemployingqautomaticqspr inklersqattachedqtoqaqpipingqsystemqcontainingqwaterqandqconnectedqtoqaqwaterqsupplyqsoqtha tqwaterqdischargesqimmediatelyqfromqsprinklersqopenedqbyqheatqfromqaqfire.
  10. WHATqISqAqWATERqSPRAYqFIXEDqSYSTEM?:q Aqspecialqfixedqpipeqsystemqconnectedqtoqaq reliableqfireqprotectionqwaterqsupplyqandqequippedqwithqwaterqsprayqnozzlesqforqspecificqwat erqdischargeqandqdistributionqoverqtheqsurfaceqorqareaqtoqbeqprotected.qTheqpipingqsystemqisq connectedqtoqtheqwaterqsupplyqthroughqan automaticallyqorqmanuallyqactuatedqvalveqthatqinitiatesqtheqflowqofqwater.qAnqautomaticqvalveqisqa ctuatedqbyqoperationqofqautomaticqdetectionqorqmanualqreleaseqequipmentqinstalledqinqtheqsa

meqareasqasqtheqwaterqsprayqnozzles.q(Inqspecialqcases,qtheqautomaticqdetectionqsystemqmayq alsoqbeqlocatedqinqanotherqarea.)

  1. WHATqISqAqWATERqTANK?:q Aqtankqsupplyingqwaterqforqwater-basedqfireqprotec-qtionqsystems

activatedqwhenqaqdropqofq 2 qpsiqinqairqpressureqisqdetectedqinqtheqsystem.qTheyqquicklyqchangeqtheq waterqandqairqpressureqbalanceqinqtheqsystem.qThisqchangeqtrips

  1. WHATqISqAqPREACTIONqSPRINKLERqSYSTEMS?:q Aqpreactionqvalveqpreventsqtheqwaterqfrom qenteringqtheqsystem.qTheqvalveqisqautomaticallyqopenedqwhenqaqfireqdetectionqsystemqdiscov ersqthatqthereqisqaqfireqorqsmokeqcondition.qTheqpreactionqvalveqisqtrippedqbyqtheqfireqdetectionq systemqbeforeqanyqofqtheqsprinklerqheadsqopen.qAqsupervisoryqdeviceqsignalsqwhenqtheqvalveqis qopened.qTheqpre-actionqvalveqcanqalsoqbeqoperatedqmanually.
  2. WHATqISqAqPreactionqSystemqwithqaqRecyclingqFeature?:q Aqspecialqkindqofqpreactionqsys temqisqaqrecyclingqsystemqforqcontrollingqsprinklers.qThisqsystemqshutsqoffqtheqwaterqwhenqtheq fireqhasqbeenqputqoutqorqtheqheatqdrops.qIfqtheqfireqrekindlesqorqtheqheatqrisesqsharply,qwaterqisqd ischargedqagain.qTheqsystemqcontinuesqcyclingqonqandqoffqasqlongqasqtheqfireqpersists.
  3. WHATqISqAqCombinedqDryqPipeqandqPreactionqSystems?:q Theseqsystemsqhaveqtheqbasic qfeaturesqofqbothqtypesqofqsystems.qTheqpipingqsystemqcontainsqairqunderqpressure.qAqheatqdet ectingqdeviceqopensqtheqwaterqcontrolqvalveqandqaqquickqopeningqdevice.qTheqsystemqthenqfillsq withqwaterqandqoperatesqasqaqwetqpipeqsystem.qIfqtheqheatqdetectingqsystemqfails,qtheqsystemqw illqoperateqasqaqstandardqdryqpipeqsystem.
  4. WHATqISqAqDELUGEqSPRINKLERqSYSTEMS?:q Theqsprinklerqheadsqinqtheqdelugeqsystemqar eqopenqatqallqtimes.qUnderqnormalqconditions,qthereqisqnoqwaterqinqtheqpiping.qTheqairqinqtheqpipi ngqisqnotqunderqpressure.qAqclosedqcontrolqvalveqpreventsqwaterqfromqflowingqintoqtheqsystem.qAq fireqdetectionqdeviceqautomaticallyqopensqtheqcontrolqvalveqwhenqaqfireqisqidentified.qAqsuperv isoryqdeviceqsignalsqwhenqtheqvalveqisqopened.qWhenqtheqvalveqisqopenedqwaterqflowsqintoqtheq system.
  5. WHATqISqAqNON-AUTOMATICqDRYqSPRINKLERqSYSTEMS?:q Thereqareqsev- eralqnon-automaticqsystems:q1)qPerforatedqpipeqsystemsq- qaqsingleqlineqofqpipingqdrilledqatqintervalsqforqwaterqdischarge.qTheseqsystemsqarequsuallyqfoun dqinqbase- qmentsqorqotherqareasqdifficultqtoqreachqinqfireqfightingqoperations.q2)qOpenqfixedqsprayqnozzles qforqtransformerqvaultsqorqotherqhazardousqareas;q3)qexteriorqexposureqsprinklersq(orqwindowqsp rinklers)quseqopenqsprinklerqheadsqtoqformqanqexternalqwaterqcurtainqonqtheqwallsqofqaqbuilding,q andq4)qFoamqsupplyqsystemsqarequsedqforqtheqprotectionqofqspecialqhazardousqoccupancies.
  6. WHATqISqAqGARBAGEqCOMPACTORqSPRINKLERqSYSTEMS?:q Wasteqcom- pactorsqarequsuallyqfoundqinqtallqmultipleqdwellingqcomplexesqsuchqasqapartmentqbuildings.qT heyqarequsedqtoqreduceqtheqtrashqbuildupqinqaqbuilding.qTheyqconsistqofqaqtallqchuteqwithqanqope
  1. WHATqISqAqSprinklerqSystemqControlqValveqSignage?:q Aqsignqidentifyingqtheqlocationq ofqtheqsidewalkqboxqhousingqtheqsprinklerqsystemqcontrolqvalveqshallqbeqconspicuouslyqpo stedqonqtheqexteriorqwallqofqtheqbuildingqdirectlyqoppositeqthe sidewalkqbox.qSuchqsignqshallqhaveqredqlettersq 1 qinchqinqheightqonqaqwhiteqbackgroundqandqread:q" SprinklerqSystemqShutoffqValveq(indicateqdistance)qfeetqoppositeqthisqsign"qorqotherqapprovedqd esign.
  2. WHATqISqAqFireqDepartmentqConnections?:q Normallyqaqsprinklerqsystemqisqconnected qtoqanqautomaticqwaterqsupplyqsource.qAuxiliaryqsourcesqofqwaterqareqsuppliedqthroughqFireq Departmentqconnectionsqatqtheqbuilding.qFireqDepartmentqconnectionsqareqaqstandardqpart qofqmostqsprinklerqsystems.qWhenqrespondingqtoqanqalarmqmostqFireqDepartmentsqsupplyqw aterqtoqtheqstandpipeqsystemqfirst.qTheqstandpipeqsystemqsuppliesqwaterqtoqtheqfireqhosesqt oqbequsedqwithinqtheqbuilding.qWaterqisqthenqsuppliedqtoqtheqsprinklerqsystemqthroughqitsqo wnqFireqDepartmentqconnection.
  3. WHATqISqAqFireqPumps?:q Fireqpumpsqcanqbequsedqtoqboostqwaterqpressureqandqvolumeqforq waterqbasedqfireqprotectionqsystems.
  4. WHATqISqAqBUILD-UPqOFqFOREIGNqMATERIALqONqSPRINKLERS?:q Some- timesqconditionsqexistqwhichqcauseqaqbuild- upqofqforeignqmaterialqonqsprinklerqheads.qThisqmayqpreventqtheqsprinklerqheadqfromqworkingqpro perly.qThisqbuild-upqisqcommon-qlyqcalledqloading
  5. WHATqISqAqSPAREqSPRINKLERqHEADS:q Underq300=qsprinklersqsix.q 301 q- q1000=qsprinklersqtwelve. Overq1000=qsprinklersqtwenty-four.
  6. WHATqISqAqPRESSUREqTANKS?:q Pressureqtanksqareqtoqbeqmaintainedqatqapproximatelyqtw o-thirdsqfullqofqwaterqandqone- thirdqfullqofqpressurizedqair.qTheqminimumqacceptableqairqpressureqinsideqtheqtankqisq 75 qpsiq(po undsqperqsquareqinch).qTheqairqpressureqinqtheqtankqmayqbeqautomaticallyqmaintainedqbyqanqairq compressor.qTheqmaximumqgrossqcapacityqofqpressureqtanksqisq9,000qgallons.
  7. WHATqISqAqGRAVITYqTANKS?:q Aqgravityqtankqshouldqbeqatqleastq 25 qfeetqaboveqtheqhighestqlin eqofqsprinklerqheadsqthatqitqsupplies.qTanksqmayqbeqlocatedqonqtheqtopsqofqbuildingsqorqraisedqo nqtallqsupporting towers.qExamplesqofqaqtypicalqgravityqtankqareqshownqbelow.
  1. WHATqISqAqFIREqPUMPSqTheqCentrifugalqPump?:q Theqcentrifugalqfireqpumpqisqtheqstanda rdqpumpqcurrentlyqusedqinqfireqprotectionqsystems.qThisqisqtheqpreferredqpumpqbecauseqitqisqrel iable,qcompact,qrequiresqlowqmaintenance,qandqitqcanqbeqpoweredqbyqaqvarietyqofqdriversqinclu ding:qelectricqmotors,qdieselqengines,qandqsteamqturbines.
  2. WHATqISqAqPrincipleqofqOperation?:q Theqwaterqavailableqtoqtheqcentrifugalqpumpqmustqa lwaysqbequnderqpressureqbecauseqtheqpumpqisqnotqdesignedqtoqliftqwater