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Sprinkler Systems: Q&A on Maintenance and Inspection, Exams of Nursing

San Francisco State University (SFSU)Nursing

A series of questions and answers related to the maintenance, inspection, and operation of citywide sprinkler systems. It covers topics such as responsibilities of building owners, record-keeping requirements, impairment procedures, and the function of various system components. The material is structured as a quiz, making it useful for self-assessment and reinforcing key concepts in fire safety and sprinkler system management. It is designed to test and enhance understanding of critical aspects of sprinkler system functionality and compliance.

Typology: Exams

2024/2025

Available from 06/02/2025

Nurseexcel
Nurseexcel 🇺🇸

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S-12 CITYWIDE SPRINKLER SYSTEMS, S12 sprinkler test
Questions and Elaborated Answers
1. THEw
ISwRESPONSIBLEwTOwMAINTAINwSPRINKLERwSYS.wANDwTOwDETERMINEwQUALIFICATIONS.:
wOWNER
2. RECORDSwOFwALLwINSPECTIONSwANDwMXwSHALLwBEwMAINTAINEDwONwPREMISESwF
ORwAwMIN.wOF _______________________________ YEARS.:w3
3. THEwBUILDINGwOWNERwSHALLwASSIGNwA(N)w
TOwCOMPLYwWITHwREQUIREMENTS.:wIMPAIRMENTwCOORDINATOR
4. REGULARwMXwANDwMINORwREPAIRSwNOTwAFFECTINGwMOREwTHAN
FLOOR(S)wAREwCONSIDEREDwPLANNEDwREMOVALwFROMwSER-wVICE.:w1
5. SHUTDOWNSwAFFECTINGwMOREwTHANw FLOOR(S)wAREwCONSID-
wEREDwUNPLANNEDwOUTwOFwSERVICEwCONDITIONS.:w1
6. NOTIFICATIONwTOwFDNYwISwNOTwREQUIRED,wPROVIDEDwSYSTEMwISwRE-
wTURNEDwTOwSERVICEwWITHINw HOURS.:w8
7. FORwUNPLANNEDwREMOVALwFROMwSERVICE,wTHEwCOFwHOLDERwSHALLwIMMEDIATELY
wREPORTwCONDITIONwTOwTHEw
ANDwTHEwFIREwDEPT.:wOWNERwOFwTHEwBUILDING
8. IFwAwMINORwDEFECTwISwOBSERVED,wITwSHALLwBEwCORRECTEDwWITHIN
DAYSwORwITwWILLwBEwCONSIDEREDwANwIMPAIRMENT.:w30
9. WHATwDOESw"OOS"wSTANDwFOR?:wOUTwOFwSERVICE
10. OOSwSYSTEMSwSHALLwBEwIDENTIFIEDwBYwPLACINGw
ATwFIREwDEPT.wCONNECTIONS,wSYS.wCONTROLwVALVES,wANDwFIREwCOMMANDwCEN-
wTER:wTAGS
11. Aw
SHALLwBEwREQUIREDwTOwPOSTwTAGSwATwMAINwCONTROLwVALVEwANDwANYwSECTIONALw
VALVES.:wMASTERwFIREwSUPPRESSIONwPIPINGwCONTRACTOR
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1 w/w 27

S- 12 CITYWIDE SPRINKLER SYSTEMS, S12 sprinkler test

Questions and Elaborated Answers

  1. THEw ISwRESPONSIBLEwTOwMAINTAINwSPRINKLERwSYS.wANDwTOwDETERMINEwQUALIFICATIONS.: wOWNER
  2. RECORDSwOFwALLwINSPECTIONSwANDwMXwSHALLwBEwMAINTAINEDwONwPREMISESwF ORwAwMIN.wOF _______________________________ YEARS.:w 3
  3. THEwBUILDINGwOWNERwSHALLwASSIGNwA(N)w TOwCOMPLYwWITHwREQUIREMENTS.:wIMPAIRMENTwCOORDINATOR
  4. REGULARwMXwANDwMINORwREPAIRSwNOTwAFFECTINGwMOREwTHAN FLOOR(S)wAREwCONSIDEREDwPLANNEDwREMOVALwFROMwSER-wVICE.:w 1
  5. SHUTDOWNSwAFFECTINGwMOREwTHANw FLOOR(S)wAREwCONSID- wEREDwUNPLANNEDwOUTwOFwSERVICEwCONDITIONS.:w 1
  6. NOTIFICATIONwTOwFDNYwISwNOTwREQUIRED,wPROVIDEDwSYSTEMwISwRE- wTURNEDwTOwSERVICEwWITHINw HOURS.:w 8
  7. FORwUNPLANNEDwREMOVALwFROMwSERVICE,wTHEwCOFwHOLDERwSHALLwIMMEDIATELY wREPORTwCONDITIONwTOwTHEw ANDwTHEwFIREwDEPT.:wOWNERwOFwTHEwBUILDING
  8. IFwAwMINORwDEFECTwISwOBSERVED,wITwSHALLwBEwCORRECTEDwWITHIN DAYSwORwITwWILLwBEwCONSIDEREDwANwIMPAIRMENT.:w 30
  9. WHATwDOESw"OOS"wSTANDwFOR?:wOUTwOFwSERVICE
  10. OOSwSYSTEMSwSHALLwBEwIDENTIFIEDwBYwPLACINGw ATwFIREwDEPT.wCONNECTIONS,wSYS.wCONTROLwVALVES,wANDwFIREwCOMMANDwCEN- wTER:wTAGS
  11. Aw SHALLwBEwREQUIREDwTOwPOSTwTAGSwATwMAINwCONTROLwVALVEwANDwANYwSECTIONALw VALVES.:wMASTERwFIREwSUPPRESSIONwPIPINGwCONTRACTOR

2 w/w 27

  1. SHALLwBEwPOSTEDwONwTHEwTAGwINDICATINGwBOTHwSTATICwANDwFLOWw PRESSURESwBEFOREwANDwAFTER.:wDRAINwTESTwRESULTS
  2. GREENwTAGSwINDICATEwTHATw .:wNOwIMPAIRMENTwWASwFOUND
  3. GREENwTAGSwWILLwBEwPLACEDwONwTHEw .:wMAINwCONTROLwVALVE
  4. SYSTEMSwPARTIALLYwORwFULLYwOUTwOFwSERVICEwSHALLwHAVEwA TAGwPLACEDwONwTHEwMAINwCONTROLwVALVE.:wRED
  5. Aw DISCwOFw 8 - 9 wINCHESwSHALLwBEwPLACEDwONwCONNECTIONSwTOwINDICATEwTHEwSYSTEMwISwFULLYwOUT wOFwSERVICE.:wWHITE
  6. Aw DISCwOFw 8 - 9 wINCHESwSHALLwBEwPLACEDwONwCONNECTIONSwTOwINDICATEwTHEwSYSTEMwISwPARTIALL YwOUTwOFwSERVICE.:wBLUE
  7. THEwIMPAIRMENTwCOORDINATORwWILLwNOTIFYwTHEw CARRI- wER,wCENTRALwSTATIONwANDwOCCUPANTS.:wINSURANCE

4 w/w 27 :wAIRwPRESSURE

  1. INwBUILDINGSwWHEREwLIFEwHAZARDwISwHIGHw(SCHOOLS,wHOSPITALS)wTHEwALARMwIS wTRANSMITTEDwDIRECTLYwTOwTHEw .:wFIREwDEPART- wMENT
  2. DRYwPIPEwVALVESwAREwOFwAw DESIGN.:wCLAPPER
  3. DRYwPIPEwVALVESwAREwUSUALLYwSETwATw PSIwABOVEwTHEwNOR- wMALwTRIPwLEVEL.:w 15 - 20

5 w/w 27

  1. ANwACCELERATORwANDwEXHAUSTERwAREwUSEDwTOw THEwTIMEwTOwALLOWwWATERwINTOwTHEwSYSTEM.:wREDUCE
  2. BOTHwACCLERATORwANDwEXHAUSTERwAREwACTIVATEDwWHENwAwDROPwOFw PSIwISwDETECTEDwINwTHEwSYSTEM.:w 2
  3. INwAwPREACTIONwSYSTEM,wTHEw ISwOPENEDwBEFOREwTHEwSPRINKLERwHEADS.:wPREACTIONwVALVE
  4. PREACTIONwSYSTEMwALARMSwAREwGIVENwASwSOONwASwTHEw wISwOPENED.:wVALVE
  5. THREEwDEVICESwUSEDwTOwTRIPwPREACTIONwVALVESwAREwFIXEDwTEMPwDEVICES,wRAT EwDEVICES,wANDw DEVICES.:wCOMBINATION
  6. THEw FEATUREwSHUTSwOFFwWATERwWHENwTHEwFIREwISwEXTIN- wGUISHEDwANDwTURNSwONwAGAINwIFwTHEwFIREwREKINDLES.:wRECYCLING
  7. THEw INwTHEwDELUGEwSYSTEMwAREwOPENwATwALLwTIMES.:w- SPRINKLERwHEADS
  8. SYSTEMSwAREwUSUALLYwFOUNDwINwBASEMENTSwORwOTHERwDIFFICULTwT OwREACHwAREAS.:wPERFORATEDwPIPE
  9. NOZZLESwAREwUSEDwFORwTRANSFORMERwVAULTSwANDwOTHERwHAZARDOUSw AREAS.:wOPEN-FIXED
  10. EXTERIORwEXPOSUREwSPRINKLERSwUSEwOPENwSPRINKLERwHEADSwTOwFORMwAw ONwTHEwWALLwOFwAwBUILDING.:wWATERwCURTAIN
  11. SYSTEMSwAREwUSEDwFORwTHEwPROTECTIONwOFwSPECIALwHAZARDOU SwOCCUPANCIES.:wFOAMwSUPPLY
  12. THEwCOFwHOLDERwSHALLwKNOWwTHEwLOCATIONwOFwALLwSPRINKLERwHEADS,wCONT ROLwVALVES,wSUPPLYwLINESwANDw ROOMS.:wCOM- wPACTOR
  13. AwSIGNwINDICATINGwTHEwLOCATIONwOFwALLw SHALLwBEwKEPTwINwTHEwCOMPACTORwROOM.:wCONTROLwVALVES
  14. ALLwINDICATINGwVALVESwINwTHEwCOMPACTORwSPRINKLERwSYSTEMwSHALLwBEw OPEN.:wSEALED
  15. AwMINIMUMwOFw EXTRAwSPRINKLERwHEADSwWITHwTHEwAP- wPROPRIATEwWRENCHESwSHALLwBEwAVAILABLEwTOwREPLACEDwDAMAGEDwONES:w 6

7 w/w 27

  1. GATEwVALVESwOFwTHEwNON-INDICATINGwTYPEwAREwCALLEDw .:w- CURBwVALVES
  2. INwANwOUTSIDEwSTEMwANDwYOLKwVALVEw(OS&Y),wVALVEwPOSITIONwISwINDICATEDwB YwTHEwPOSITIONwOFwTHEw .:wSTEM
  3. ONwAwPOSTwINDICATORwVALVEw(PIV),wTHEwPOSITIONwOFwTHEwVALVEwISwSHOWNwTHR OUGHwAw .:wTELLTALE
  4. FDNYwCONNECTIONSwTOwAUTOMATICwSPRINKLERwSYSTEMSwSHALLwBEwPAINTEDw .:wGREEN
  5. FDNYwCONNECTIONSwTOwNON-AUTOMATICwSPRINKLERwSYSTEMSwSHALLwBEwPAINTEDw .:wSILVER
  6. FDNYwCONNECTIONSwTOwSTANDPIPEwSYSTEMSwSHALLwBEwPAINTED .:wRED
  7. FDNYwCONNECTIONSwTOwAwCOMBINEDwSTANDPIPE/SPRINKLERwSYSTEMwSHALLwBEwPAI NTEDw .:wYELLOW
  8. FDNYwCONNECTIONSwSHALLwBEwFITTEDwWITHwAwLOWERwCHECKwVALVE.wTHISwWILLwPR EVENTw OFwWATER.:wBACKFLOW
  9. PRESSUREwTANKSwSHOULDwBEwKEPTw FULLwANDwBEwMAIN- wTAINEDwATwORwABOVEw PSI.:w2/3,w 75
  10. AREwDESIGNEDwTOwTAKEwWATERwFROMwAwSUPPLYwANDwDISCHARG EwITwUNDERwPRESSURE.:wFIREwPUMPS
  11. AUTOMATICwFIREwPUMPSwAREwUSUALLYwNEEDEDwWHEREwAw wMAYwOCCURwIMMEDIATELY.:wHIGHwWATERwDEMAND
  12. WATERwALARMSwSERVEwASwFIREwEXTINGUISHINGwSYSTEMSwANDwSERVEwASwA(N)w .:wAUTOMATICwFIREwALARM.
  13. SPRINKLERwSYSTEMSwAREwREQUIREDwTOwHAVEwANwAPPROVEDwMOTORwGONG,wBELL,w HORN,wORw .:wSIREN
  14. SPRINKLERSwMANUFACTUREDwAFTERw1/1/2000wAREwREQUIREDwTOwHAVEwAw .:wSPRINKLERwIDENTIFICATIONwNUMBERw(SIN)
  15. SPRINKLERSwHAVEwBEENwRECALLED.:wCYCLING
  16. SPRINKLERwHEADSwEXPOSEDwTOw CONDITIONSwAREwOFTENwCOVEREDwWITHwAwCOATwOFwWAX,wORwLEAD.:wCORROSIVE

8 w/w 27

  1. ATwAwDISTANCEwOFw 4 wFEETwBELOWwTHEwDEFLECTOR,wTHEwSPRAYwPAT- wTERNwCOVERSwAwDIAMETERwOFw FEETwWHENwDISCHARGINGwATw 15 wGPM.:w 16
  2. LARGEwDROPwSPRINKLERwHEADSwAREwUSEDwTOwBREAKwTHROUGHwTHEwSTRONGw OFwHIGHwCHALLENGEwFIRES.:wUPDRAFTS
  3. IFwAwFIREwHASwBEENwCOMPLETELYwEXTINGUISHED,wTHEw wORwTHEIRwREPRESENTATIVEwMAYwCLOSEwTHEwCONTROLwVALVE.:wBUILDINGwOWNER

10 w/w 27

  1. THEw PUMPwISwTHEwSTANDARDwPUMPwCURRENTLYwUSEDwINwFIREwPROTECTIONwSYSTEMS.: wCENTRIFUGAL
  2. THEwWATERwAVAILABLEwTOwTHEwCENTRIFUGALwPUMPwMUSTwALWAYSwBE .:wUNDERwPRESSURE

11 w/w 27

  1. CENTRIFUGALwPUMPSwAREwCAPABLEwOFwDISCHARGINGwWATERwFROM TOw GPM.:w25,w 5000
  2. AwVERTICALwTURBINEwPUMPwISwUSEDwTOwDRAWwWATERwFROMwAwWELLwTO .:wFILLwAwSTORAGEwTANK.
  3. MUD,wGRAVEL,wANDwLEAVESwMAYwCAUSEwDAMAGEwTOwTHEw .- :wPUMP
  4. WHENw AREwINSTALLED,wTHEYwAREwUSUALLYwUSEDwINwCOMBINATIONwWITHwAwGRAVITYwTANKw ORwAwPRESSUREwTANK.:wMANUALLYwACTIVATEDwPUMPS
  5. COFwHOLDERSwSHOULDwMANUALLYwACTIVATEwTHEwFIREwPUMPSwIAW .:wMANUFACTURERwINSTRUCTIONS
  6. REMOTEwPUSHBUTTONSwAREwUSEDwTOw THEwPUMPwONLY.:w- START
  7. PRESSUREwMAINTENANCEwPUMPSw(JOCKEYwPUMPS)wAREwUSEDwTO PRESSUREwINwTHEwSYSTEM.:wRESTORE
  8. THEw PUMPwINCREASESwPRESSUREwTOwANwACCEPTABLEwLEV- wEL.:wBOOSTER
  9. THEwTEMPERATUREwINwTHEwPUMPwROOMwSHOULDwBEwMAINTAINEDwABOVEw .:w 40 wDEGREESwFAHRENHEIT
  10. MISSINGwORwDEFECTIVEwPIPEwHANGERSwCANwCAUSEwTHEwSYSTEMwTOwFAILwDUEwTOw .:wPIPEwRUPTURE
  11. SHALLwNOTwBEwUSEDwTOwFASTENwTHEwSYSTEMwORwBUILD- wINGwATTACHMENTSwTOwTHEwSTRUCTURE.:wNAILS
  12. VISUALwINSPECTIONwOFwHANGINGwANDwBRACINGwISwNOTwREQUIREDwFORwPIPINGw CONCEALEDwABOVEw .:wCEILINGS
  13. LINESwAREwDIRECTLYwCONNECTEDwTOwSPRINKLERwHEADS.:wB RANCH
  14. AREwABLEwTOwSUPPLYwFEEDwMAINSwORwCROSSwMAINSwDI- wRECTLY.:wRISERS
  15. STANDARDwSTEELwPIPEwWITHwDIAMETERSwOFw 1 - 1/4wINCHwREQUIREwHANGERSwTOwBEwPLACEDwFEETwAPART.:w 12

13 w/w 27

  1. SYSTEMSwABOVEw PSIwHAVEwDIFFERENTwSUPPORTwREQUIRE- wMENTS.:w 100
  2. NYCwBUILDINGwCODEwREQUIRESwSWAYwBRACINGwFORwSPRINKLERwSYS.wINSTALLEDwA FTERw .:w 1998
  3. MINIMUMwSIZEwHANGERwRODSwFORwPIPEwDIAMETERwUPwTOw 4 wINCHES: .:w3/
  4. MINIMUMwSIZEwHANGERwRODSwFORwPIPEwDIAMETERwOFw 5 - 8 wINCHES: .:w1/
  5. MINIMUMwSIZEwHANGERwRODSwFORwPIPEwDIAMETERwOFw 10 - 12 wINCHES: .:w5/
  6. THEwINSIDEwOFwPRESSUREwTANKSwSHALLwBEwINSPECTEDwCAREFULLYwEVERY YEARS.:w 3
  7. WHENwINSPECTINGwPRESSUREwTANKS,wTHEwCOMPRESSORwSHALLwBEwCAPABLEwOFw PRESSURIZINGwTOw PSIwWITHINw 3 wHOURSwORwLESS.- :w 75
  8. PUMPSwSHOULDwBEwACTIVATEDwEACHwWEEKwANDwRUNwFORw wMINUTESwINwACCORDANCEwTOwTHEwMANUFACTURERSwSPECIFICATIONS.:w 10
  9. INSTALLATIONSwTHATwDON'TwAPPEARwCORRECTwINCLUDEwSPRINKLERwHEADSwLOCAT EDwMOREwTHANw INCHESwBELOWwTHEwCEILING.:w 22
  10. THEwPRESENCEwOFwOBSTRUCTIONSwINwSPRINKLERwSYSTEMSwSHALLwBEwCHECKEDw EVERYw YEARS.:wFIVE
  11. WHENwTUBERCULESwANDwSLIMEwAREwFOUNDwTHEYwSHALLwBEwTESTEDwFORw .:wMICROBIOLOGICALLYwINFLUENCEDwCORROSION
  12. firewdepartmentwconnection:wnormallywonwexteriorwofwbuilding...wFDNYwcanwpumpws upplementalwwaterwintowthewsprinklerwsystem,wstandpipe,worwotherwsystemwfurnishingwwat erwforwfirewextinguishmentwtowsupplementwexistingwwaterwsupplies.
  13. systemwcontrolwvalve:wvalvewcontrollingwflowwtowwater- basedwfirewprotectionwsystems.
  14. firewcommandwcenter:wDesignatedwroomworwareawinwawstructurewwherewthewstatuswofwthewfir ewdetection,walarm,wandwprotectionwsystemswiswdisplayedwandwthewsystemswcanwbewmanuallywco ntrolled.

14 w/w 27

  1. Firewpump,wautomaticwstandpipe.:wAwfirewpumpwlocatedwatworwbelowwstreetwlevelwthatwsup plieswthewlowerw 300 wfeetw(91.4wm)wofwawstandpipewsystemworwawcombinedwstandpipewandwspri nklerwsystem.
  2. tags:wonwclosedwsectionwvalveswservingwaffectedwareas:wareawaffected,wbriefwdescription ,woccupancywclassification,wcwofwfwnumber,westimatedwtimewuntilwoperational
  3. Greenwtag:wnowimpairmentwfoundwinwentirewsystem-wmainwcontrolwvalve
  4. redwtag:wplacewonwmainwcontrolwvalvewifwFULLYwoutwofwservice...wputwsprinklerwcompan ywname,wdatewofwremovalwfromwservicewandwanticipatedwtimewtowoperational

16 w/w 27 wtectwthewoperatingwelemtnwformwdischargewfromwsprinklerswinstalledwatwhigherweleva-wtions

  1. largeworificewsprinkler:wsprinklerwheadwwithworificewsizewequalworwgreaterwthanw3/4wand wlesswthanw 1 winch

17 w/w 27

  1. listedwdevice:wAwfirewprotectionwcomponentwthatwhaswbeenwtestedwtowperformwunderwpar ameterswspecifiedwforwitswusewbywawnationallywrecognizedwtestingwagency.wUnderwriter'swLabo ratoryw(UL)wandwFactorywMutualw(FM)warewthewtwowmostwcommon.
  2. MasterwPressurewReducingwValve:wAwpressurewreducingwvalvewinstalledwtowregulatewpre ssureswinwanwentirewfirewprotectionwsystemwand/orwstandpipewsystemwzone.
  3. MainwDrain:wThewprimarywdrainwconnectionwlocatedwonwthewsystemwriserwandwalsowutilizedw aswawflowwtestwconnection.
  4. MicrobiologicallywInfluencedwCorrosionw(MIC):wCorrosionwcausedwbywthewpresencewofw microbeswinwthewwaterwsupplywthatwoverwtimewattackwthewinteriorwofwmetallicwpipingwandwcausewl eaks,wpitting,wandwblockages.
  5. ConventionalwSprinkler:wAwsprinklerwthatwdirectsw40%wtow60%wofwthewwaterwinitiallywi nwawdownwardwdirectionwandwiswdesignedwtowbewinstalledwwithwthewdeflectorwinweitherwthewu prightworwpendentwposition.
  6. PendentwSprinkler:wAwsprinklerwdesignedwtowbewinstalledwinwsuchwawwaywthatwthewwaterwst reamwiswdirectedwdownwardwagainstwthewdeflector.
  7. PintlewScrews:wAwvisualwindicatingwdevicewrequiredwforwsprinklerswmanufacturedwpriorwtow 1999 widentifyingwsmallworificewsprinklerswandwlargeworificewsprinklerswwhereworificewsizewiswdiff erentwthanwthewnominalwthreadwsizewofwthewsprinklerwhead.
  8. PipewSchedulewSystems:wAwmethodwofwsizingwpipingwbasedwuponwthewnumberwofwsprink lerwheadswandwthewoccupancywofwthewprotectedwarea.
  9. PreactionwSprinklerwSystem:wAwsprinklerwsystemwemployingwautomaticwsprin- wklerswthatwarewattachedwtowawpipingwsystemwthatwcontainswairwthatwmayworwmaywnotwbewunderw pressure,wwithwawsupplementalwdetectionwsystemwinstalledwinwthewsamewareaswaswthewsprinkl ers.
  10. PressurewControlwValve:wAwpilotwoperatedwpressurewreducingwvalvewthatwmaywbewusedwwit hwawfireworwboosterwpumpwdesignedwforwthewpurposewofwpreventingwthewincomingwwaterwsupplywpr essurewfromwdroppingwbelowwawsetwpressure.
  11. Pressure- ReducingwValve:wAwvalvewdesignedwforwthewpurposewofwreducingwthewdownstreamwwaterwpress urewunderwbothwflowingw(residual)wandwnonflowingw(static)wconditions.
  12. PressurewReliefwValve:wAwvalvewdesignedwforwthewpurposewofwreleasingwexcesswairworwwat

19 w/w 27

  1. ResidentialwSprinkler:wAwtypewofwfastwresponsewsprinklerwthatwhaswbeenwspecif- wicallywtestedwtowenhancewsurvivabilitywinwthewroomwofwfireworiginwandwlistedwforwusewinwdwellin gwunits.
  2. ResponsewTimewIndexw(RTI):wAwmeasurementwofwthewthermalwsensitivitywofwawsprinkler wheadwexpressedwinw(meters-seconds)w1/2.
  3. Supervisorywsignal:wAwsignalwindicatingwthewneedwforwactionworwthewusewofwsuchwdevicewi nwconnectionwwithwthewsupervisionwofwfirewalarmwsystemsworwthewmaintenancewfeatureswofwrel atedwsystems.
  4. Smallworificewsprinklers:wAwsprinklerwheadwwithwandworificewsizewsmallerwthanw1D2"
  5. SolderwLinkwSprinkler:wAwsprinklerwoperatedwbywthewmeltingwofwawmetalwlink,wtheywvarywinwsi zewandwconfigurationwforwquickwresponsewandwstandardwresponsewsprinklers.wThewsmallerwthew sizewofwthewlink,wthewfasterwthewsprinklerwoperates.
  6. SpraywSprinkler:wAwtypewofwsprinklerwlistedwforwitswcapabilitywtowprovidewfirewcontrolwforwawwi dewrangewofwfirewhazards.wThewmostwcommonlywusedwsprinklerwsincew1953.
  7. StandardwResponsewSprinklerwHead:wAwsprinklerwhavingwawfusiblewlinkwwithwawrespons ewtimewindexw(RTI)wofw 80 worwmore.
  8. Supervisorywsignal- initiatingwdevice:wAnwinitiatingwdevice,wsuchwaswawvalvewsupervisorywswitch,thatwtriggerswaw supervisorywsignal.
  9. Testing:wAwprocedurewusedwtowdeterminewthewstatuswofwawsystemwaswintendedwbywconduct ingwperiodicwphysicalwcheckswonwwaterwbasedwfirewprotectionwsystemswsuchwaswwaterflowwtes ts,wfirewpumpwtests,walarmwtests,wandwtripwtestswofwdrywpipe,wdeluge,worwpreactionwvalves.wThese wtestswfollowwupwonwtheworiginalwacceptancewtestwatwintervalswspecifiedwinwthewappropriatewch apterwofwNFPAw#25,w 2002 wedition.
  10. UprightwSprinkler:wAwsprinklerwdesignedwtowbewinstalledwinwsuchwawwaywthatwthewwaterws praywiswdirectedwupwardswagainstwthewdeflector.
  11. WaterwSpraywFixedwSystem:wAwspecialwfixedwpipewsystemwconnectedwtowawreli- wablewfirewprotectionwwaterwsupplywandwequippedwwithwwaterwspraywnozzleswforwspecificwwaterw dischargewandwdistributionwoverwthewsurfaceworwareawtowbewprotected.wThewpipingwsystemwiswcon nectedwtowthewwaterwsupplywthroughwanwautomaticallyworwmanuallywactuatedwvalvewthatwinitiat eswthewflowwofwwater.wAnwautomaticwvalvewiswactuatedwbywoperationwofwautomaticwdetectionworw

20 w/w 27 manualwreleasewequipmentwinstalledwinwthewsamewareaswaswthewwaterwspraywnozzles.w(Inwspecia lwcases,wthewautomaticwdetectionwsystemwmaywalsowbewlocatedwinwanotherwarea.)

  1. PREACTIONwSPRINKLERwSYSTEMS:wdesignedwforwsituationswwherewtherewiswdangerwofws eriouswwaterwdamage.wWaterwdamagewiswusuallywcausedwbywdamagedwsprinklersworwbrokenwpi ping.wUnderwnormalwconditionswtherewiswnowwaterwinwthewpiping.wThewairwinwthewpipingwmayworwma ywnotwbewiswunderwpressure.wAwpreactionwvalvewpreventswthewwaterwfromwenteringwthewsystem.wTh ewvalvewiswautomaticallywopenedwwhenwawfire