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Sprinkler Systems: Exam Questions and Solutions for Fire Protection, Exams of Nursing

San Francisco State University (SFSU)Nursing

A comprehensive overview of sprinkler systems, detailing various components, operational aspects, and testing procedures. It covers essential terminology related to sprinkler systems, including types of sprinklers, valves, and system designs. Structured as a series of definitions and explanations, making it a valuable resource for understanding the intricacies of fire protection systems. It is useful for students and professionals in fire safety, engineering, and building management, offering insights into the design, maintenance, and testing of sprinkler systems. The document also touches on advanced topics such as hydraulically calculated systems and special hazards occupancies, enhancing its educational value.

Typology: Exams

2024/2025

Available from 06/02/2025

Nurseexcel
Nurseexcel 🇺🇸

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832 documents

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S12 sprinkler Final test Exam Questions and Solved Solutions
1. firesdepartmentsconnection:snormallysonsexteriorsofsbuilding...sFDNYscanspumpssuppleme
ntalswatersintosthessprinklerssystem,sstandpipe,sorsotherssystemsfurnishingswatersforsfiresexting
uishmentstossupplementsexistingswaterssupplies.
2. systemscontrolsvalve:svalvescontrollingsflowstoswater-basedsfiresprotectionssys-stems.
3. firescommandscenter:s...
4. MFSPC:s...
5. MLP:s...
6. tags:sonsclosedssectionsvalvessservingsaffectedsareas:sareasaffected,sbriefsdescrip-
stion,soccupancysclassification,scsofsfsnumber,sestimatedstimesuntilsoperational
7. Greenstag:snosimpairmentsfoundsinsentiressystem-smainscontrolsvalve
8. whitestag:sfullysoutsofsservice-splacesonsallsfiresdepartmentsconnecitons
9. redstag:splacesonsmainscontrolsvalvesifsFULLYsORsPARTIALLYsoutsofsservice...sputssprinklers
companysname,sdatesofsremovalsfromsservicesandsanticipatedstimestosoperational
10. bluesdisk:spartiallysoutsofsservice-sonsallsfiresdepartmentsconnections
11. watersstoragestank:s...
12. OSs&sYsvalve:sindicatingstypesofscontrolsvalvesusedsforsfiressprinklerssystem
13. delugesvalve:swaterssupplyscontrolsvalvesintendedstosbesoperatedsbysactuationsofsansauto
maticsdetectionssystemsthatsissinstalledsinsthessamesareasassthesdischargesdevices.sINTENDEDs
USEsISsMANUALsANDsAUTO
14. delugessprinklerssystem:semployingsopenssprinklerssthatsaresattachedstosaspipingssystem
sthatsissconnectedstosaswaterssupplysthroughsasvalvesthatsissopenedsbysthesoperationsofsasdetecti
onssystemsinstalledsinsthessamesareassassthessprinklers.sWHENsITsOPENS,swatersflowssintosthe
spipingssystemsandsdischargessfromsallssprinklerssattached.
15. Earlyssuppresionsfastsresponsessprinklers:sfastsresponsessprinklersthatsisslistedsforsit
sscapabilitystosprovidesfiressuppressionsofsspecificshighschallengesfireshazards
16. extraslargesorificessprinklers:s=sors>s1sinchslessspressurestosachievesasgivensdischargesd
ensity
17. extendedscoveragessprinkler:s400smaxssquaresfeetsdischarge
18. firespump:sasprovidersofsliquidsflowsandspressuresdedicatedstosfiresprotection.sAsfirespumps
pf3
pf4
pf5
pf8
pf9
pfa
pfd

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S12 sprinkler Final test Exam Questions and Solved Solutions

  1. firesdepartmentsconnection:s normallysonsexteriorsofsbuilding...sFDNYscanspumpssuppleme ntalswatersintosthessprinklerssystem,sstandpipe,sorsotherssystemsfurnishingswatersforsfiresexting uishmentstossupplementsexistingswaterssupplies.
  2. systemscontrolsvalve:s valvescontrollingsflowstoswater-basedsfiresprotectionssys-stems.
  3. firescommandscenter:s ...
  4. MFSPC:s ...
  5. MLP:s ...
  6. tags:s onsclosedssectionsvalvessservingsaffectedsareas:sareasaffected,sbriefsdescrip- stion,soccupancysclassification,scsofsfsnumber,sestimatedstimesuntilsoperational
  7. Greenstag:s nosimpairmentsfoundsinsentiressystem-smainscontrolsvalve
  8. whitestag:s fullysoutsofsservice-splacesonsallsfiresdepartmentsconnecitons
  9. redstag:s placesonsmainscontrolsvalvesifsFULLYsORsPARTIALLYsoutsofsservice...sputssprinklers companysname,sdatesofsremovalsfromsservicesandsanticipatedstimestosoperational
  10. bluesdisk:s partiallysoutsofsservice-sonsallsfiresdepartmentsconnections
  11. watersstoragestank:s ...
  12. OSs&sYsvalve:s indicatingstypesofscontrolsvalvesusedsforsfiressprinklerssystem
  13. delugesvalve:s waterssupplyscontrolsvalvesintendedstosbesoperatedsbysactuationsofsansauto maticsdetectionssystemsthatsissinstalledsinsthessamesareasassthesdischargesdevices.sINTENDEDs USEsISsMANUALsANDsAUTO
  14. delugessprinklerssystem:s employingsopenssprinklerssthatsaresattachedstosaspipingssystem sthatsissconnectedstosaswaterssupplysthroughsasvalvesthatsissopenedsbysthesoperationsofsasdetecti onssystemsinstalledsinsthessamesareassassthessprinklers.sWHENsITsOPENS,swatersflowssintosthe spipingssystemsandsdischargessfromsallssprinklerssattached.
  15. Earlyssuppresionsfastsresponsessprinklers:s fastsresponsessprinklersthatsisslistedsforsit sscapabilitystosprovidesfiressuppressionsofsspecificshighschallengesfireshazards
  16. extraslargesorificessprinklers:s =sors>s 1 sinchslessspressurestosachievesasgivensdischargesd ensity
  17. extendedscoveragessprinkler:s 400 smaxssquaresfeetsdischarge
  18. firespump:s asprovidersofsliquidsflowsandspressuresdedicatedstosfiresprotection.sAsfirespumps

2 s/s issaspartsofsasfiressprinklersssystemswaterssupplysandscansbespoweredsbyselectric,sdieselsorsste am.sconnectedstospublicswaterssourcesorstank.sprovidesshigherspressurestossprinklerssystem

  1. Glasssbulbssprinkler:s operatedsbysheatsbreakingsasglasssbulbsfilledswithsasnonsfreezingsliq uidswithsdiameterssthatsvarysforms 3 smmsforsquicksresponsestos 5 smmsforsstandardsresponse

4 s/s adssandsthesoccupancysofsthesprotectedsarea.

  1. PreactionsSprinklersSystem:s Assprinklerssystemsemployingsautomaticssprin- sklerssthatsaresattachedstosaspipingssystemsthatscontainssairsthatsmaysorsmaysnotsbesunderspre ssure,swithsassupplementalsdetectionssystemsinstalledsinsthessamesareassassthessprinklers.
  2. PressuresControlsValve:s Aspilotsoperatedspressuresreducingsvalvesthatsmaysbesusedswithsas firesorsboosterspumpsdesignedsforsthespurposesofspreventingsthesincomingswaterssupplyspressure sfromsdroppingsbelowsassetspressure.

5 s/s

  1. Pressure- ReducingsValve:s Asvalvesdesignedsforsthespurposesofsreducingsthesdownstreamswaterspressu resundersbothsflowings(residual)sandsnonflowings(static)sconditions.
  2. PressuresReliefsValve:s Asvalvesdesignedsforsthespurposesofsreleasingsexcesssairsorswaterspre ssuresfromsthesFiresProtectionsPipingsSystem.
  3. PressuresTank:s Astanksusingsairspressurestossupplyingswatersforswater- basedsfiresprotectionssystems.sTankscontentsstosbesmaintainedsatsonesthirdsairstostwosthirdsswat er.
  4. QuicksResponsesSprinklersHead:s Assprinklershavingsasfusibleslinkswithsasre- ssponsestimesindexs(RTI)sofs 50 sorsless.
  5. RecessedsSprinkler:s Assprinklersinswhichsallsorspartsofsthesbody,sothersthansthesshanksthre ad,sissmountedsabovesthesceiling.
  6. ResidentialsSprinkler:s Astypesofsfastsresponsessprinklersthatshassbeensspecif- sicallystestedstosenhancessurvivabilitysinsthesroomsofsfiresoriginsandslistedsforsusesinsdwellingsu nits.
  7. ResponsesTimesIndexs(RTI):s Asmeasurementsofsthesthermalssensitivitysofsassprinklersh eadsexpressedsins(meters-seconds)s1/2.
  8. Supervisoryssignal:s Assignalsindicatingsthesneedsforsactionsinsconnectionswithsthessuperv isionsofsguardstours,sfiresextinguishingssystemssorsequipment,sfiresalarmssystemssorsthesmaint enancesfeaturessofsrelatedssystems.
  9. Smallsorificessprinklers:s Assprinklersheadswithsandsorificessizessmallersthans1D2"
  10. SoldersLinksSprinkler:s Assprinklersoperatedsbysthesmeltingsofsasmetalslink,stheysvarysinssizes andsconfigurationsforsquicksresponsesandsstandardsresponsessprinklers.sThessmallersthessizeso fstheslink,sthesfastersthessprinklersoperates.
  11. SpraysSprinkler:s Astypesofssprinklerslistedsforsitsscapabilitystosprovidesfirescontrolsforsaswides rangesofsfireshazards.sThesmostscommonlysusedssprinklerssinces1953.
  12. StandardsResponsesSprinklersHead:s Assprinklershavingsasfusibleslinkswithsasresponsesti mesindexs(RTI)sofs 80 sorsmore.
  13. Supervisoryssignal- initiatingsdevice:s Ansinitiatingsdevice,ssuchsassasvalvessupervisorysswitch,swaterslevelsindica tor,sorslow-airspressuresswitchsonsasdry-pipesorspre-

7 s/s

  1. WatersSpraysFixedsSystem:s Asspecialsfixedspipessystemsconnectedstosasreliablesfiresprotecti onswaterssupplysandsequippedswithswatersspraysnozzlessforsspecificswatersdischargesandsdistrib utionsoversthessurfacesorsareastosbesprotected.sThespipingssystemsissconnectedstostheswaterssu pplysthroughsansautomaticallysorsmanuallysactuatedsvalvesthatsinitiatessthesflowsofswater.sAnsa utomaticsvalvesissactuatedsbysoperationsofsautomaticsdetectionsorsmanualsreleasesequipmentsi nstalledsinsthessamesareassasstheswatersspraysnozzles.s(Insspecialscases,sthesautomaticsdetectio nssystemsmaysalsosbeslocatedsinsanothersarea.)
  2. PREACTIONsSPRINKLERsSYSTEMS:s designedsforssituationsswherestheresissdangersofsserio usswatersdamage.sWatersdamagesissusuallyscausedsbysdamagedssprinklerssorsbrokenspiping.sU ndersnormalsconditionsstheresissnoswatersinsthespiping.sThesairsinsthespipingsmaysorsmaysnotsbesiss underspressure.sAspreactionsvalvespreventsstheswatersfromsenteringsthessystem.sThesvalvesissaut omaticallysopenedswhensasfiresdetectionssystemsdiscoverssthatstheresissasfiresorssmokesconditi on.sThespreactionsvalvesisstrippedsbysthesfiresdetectionssystemsbeforesanysofsthessprinklersheads sopen.sAssupervisorysdevicessignalsswhensthesvalvesissopened.sThespreactionsvalvescansalsosbesop eratedsmanually.
  3. DELUGEsSPRINKLERsSYSTEMS:s equippedswithsopenssprinklersheadssde- ssignedstoswetsdownsansentiresareasinvolvedsinsasfire.sThisssystemsissneededswhenstheresissdang ersofsasfiresrapidlysspreadingsthroughoutsthesbuilding.sThesdelugessystemswillsslowsdownsthesspre adsofsthesfire.sDelugessystemssaressuitablesforshazardoussoccupancies.sThissincludessbuildings sinswhichsflammablesliquidssorsothershazardoussmaterialssareshandledsorsstored. Thessprinklersheadssinsthesdelugessystemsaresopensatsallstimes.sUndersnormalsconditionsstheresi ssnoswatersinsthespiping.sThesairsinsthespipingsissnotsunderspressure.sAsclosedscontrolsvalvesprevent sswatersfromsflowingsintosthessystem.sAsfiresdetectionsdevicesautomaticallysopenssthescontrolsva lveswhensasfiresissidentified.sAssupervisorysdevicessignalsswhensthesvalvesissopened.sWhensthesval vesissopenedswatersflowssintosthessystem.sTheswatersissthensdischargedsoutsallsofsthessprinklershe ads.sTheswaterscontrolsvalvesmaysalsosbesopenedsmanually.
  4. NON- AUTOMATICsDRYsSPRINKLERsSYSTEMS:s llspipessaresnormallysdry.sWatersisssuppliedswhensne ededsbyspumpingswatersintosthessystemsthroughsthesFiresDepartmentsconnection.sSomesofsthe sessystemssaressuppliedsbysmanualsoperationsofsaswaterscontrolsvalvesandsmaysbesequippedswi thssprinklersswithsorswithoutsfusibleslinks.

8 s/s Theresaresseveralsnon-automaticssystems:s1)sPerforatedspipessystemss- sassingleslinesofspipingsdrilledsatsintervalssforswatersdischarge.sThesessystemssaresusuallysfoundsi nsbasementssorsothersareassdifficultstosreachsinsfiresfightingsoperations.s2)sOpensfixedsspraysno zzlessforstransformersvaultssorsothershazardoussareas;s3)sexteriorsexposure

10 s/s pendicularstosthesdirectionsofsflow.sUponswaterflow,sthespaddlesswitchstransmitssansalarm.sVa nestypeswaterflowsswitchesscannotsbesinstalledstosmonitorswaterflowsinsdryspipessprinklerssys tems.

11 s/s

  1. AlarmsRetardingsDevices:s Ansalarmschecksvalvesthatsissexposedstoschangingswaterssuppl yspressuresneedssansalarmsretardingsdevice.sThississrequiredstospreventsfalsesalarmsswhensthes checksvalvesclappersissliftedsfromsitssseatsbysastemporaryspressuressurge.sVanestypeswatersflo wsswitchesssensitivityscansalsosbesadjustedstoschangingswaterspressures.
  2. ThesCentrifugalsPump:s Thescentrifugalsfirespumpsissthesstandardspumpscurrent- slysusedsinsfiresprotectionssystems.sThississthespreferredspumpsbecausesitsissreliable,scompact,s requiresslowsmaintenance,sandsitscansbespoweredsbysasvarietysofsdriverssincluding:selectricsm otors,sinternalscombustionsengines,sandssteamsturbines
  3. ThesVerticalsTurbinesPump:s Asverticalsturbinespumpsissreallysasmodifiedscen- strifugalspumpsthatshassthescapabilitystosdrawswatersfromsstreams,sponds,swellssetc.sUnlikesth esstandardscentrifugalspump,sthesverticalsturbinespumpsdoessnotsneedsthessuctionssupplystosb esunderspressuresforsitstosoperate.sInsteadsitsdrawsstheswatersintosthespumpsbyssuction.sTheswate rsissdrawnsintosthespump.sWhensitsreachessthesrotatingsimpellersstheswaterspressuresissincreaseds andsthensforcefullysdischargedsintosthesfiresprotectionssystem.
  4. PumpsActivation:s Asfirespumpscansbesstartedsautomaticallysorsmanually.sThespumpscansb esstartedsautomaticallysbysanselectricscontrollersorsansenginescontroller.sThesescontrollerssact ivatesthespumpswhenstheresissasdropsofswaterspressuresorswatersflowsinsthesfiresprotectionssyste m.sThescontrollerssaresadjustedssosthatsasminorsdropsinswaterspressuresorsminorsincreasesinswat ersflowsduestosassmallsleakswill notsactivatesthespumps.sThescontrollerssforsthesfirespumpssaresexpensive;srequiresextensivesmai ntenancesandsperiodicstesting.sWhereselectricsmotorsdrivesissused,sasstandbyspowersgeneratorsi sssometimessrequired.sIfsansenginescontrollersissusedsthesappropriatesfuelsstoragestankssshoulds besfilledsandscheckedsregularly.
  5. PressuresMaintenancesPumpss(JockeysPumps):s Pressuresmaintenancespumps, Somestimessreferredstosassjockey,sorsmakeupspumps,saresoftensfoundsonssprinklerssystems.sThe sespumpssaresdesignedstosautomaticallysoperateswhenstheresissasslightsdropsinspressuresduestost hesleakagesinsthessystemsorsaspressuressurge.sThesjockeyspumpsrestoressthespressuresinsthesfires protectionssystemstosthesdesiredslevel.sWhensthesdropsofspressuresinsthessystemsgreatersthansthe scapacitysofsthesjockeyspumpsthesfirespumpsissactivated.
  6. Boosterspumps/specialsservicespumps:s Boosterspumpssaressometimessusedsinssprinkler ssystems.sTheyssmallspumpsswithslimitedspowersaresusuallyslocatedsinsthesbasementsorstakings

13 s/s sprinklerssystemsuntilsitsreachessacceptableslevels.sThesboosterspumpsshouldsnotsbesconfusedsw ithsthesfirespumpsorsthesjockeyspump.

  1. Sprinklerssystemspiping:s Branchslinessaresdirectlysconnectedstossprinklersheads. Crosssmainssorsloopsmainssaresdirectlysconnectedstosbranchslines.sFeedsmainssaresdirectlyscon nectedstoscrosssmainssorsloopsmains.sRiserssaresablestossupplysfeedsmainssorscrosssmainssdirectly.
  2. rti:s responsestimesindex
  3. fullsflowstest:s performedseverys 5 syears:
  4. opensmainsvalvestosletsdebrissescape,sthensclose
  5. systemsairsasndswaterspressruesrecorded.
  6. relievespressuresbysopeningsinspectorstestsvalves(usesstopwatch)
  7. atsdryspipesvalvesnotesairespressureswhichsvalvestripssansnotestime
  8. atsinspectorsstestsnotestimesthatswatersflowsssteadily.
  9. teststerminatedswhenscleanswatersflowss(shitsvalve)scomp arestospaststests