Standard For The Inspection, Testing, And Maintenance Of .

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ErrataNFPA 25Standard for the Inspection, Testing, and Maintenance ofWater-Based Fire Protection Systems2017 EditionReference: VariousErrata No: 25-17-1The Technical Committee on Inspection, Testing, and Maintenance of Water-Based ProtectionSystems notes the following errors in the 2017 edition of NFPA 25, Standard for the Inspection,Testing, and Maintenance of Water-Based Fire Protection Systems.1. In Table 5.1.1.2, correct the cross references to read as follows:Table 5.1.1.2 Summary of Sprinkler System Inspection, Testing, and MaintenanceItemFrequencyReferenceInspectionControl valvesChapter 13Fire department connectionsChapter 13Gauges (wet and deluge systems)QuarterlyChapter 13Gauges (dry and preactionsystems)Monthly/quarterlyChapter 13Hanger/braces/supportsAnnually5.2.3Heat tracingPer manufacturer's requirements5.2.76Hydraulic design information sign Annually5.2.65Information signs5.2.7, 5.2.8, 5.2.9AnnuallyInternal piping conditionChapter 14Pipe and lers (spare)Annually5.2.1.4

Supervisory signal devices (except Quarterlyvalve supervisory switches)5.2.54System valvesChapter 13Valve supervisory signal devicesQuarterly5.2.54Waterflow alarm devicesQuarterly5.2.54Annually5.3.43TestAntifreeze solutionControl valvesGaugesChapter 135 yearsMain drainChapter 13Chapter 13SprinklersAt 50 years and every 10 yearsthereafter5.3.1.1.1, 5.3.1.1.1.1, 5.3.1.1.1.2SprinklersAt 75 years and every 5 yearsthereafter5.3.1.1.1.5Sprinklers (dry)10 years and every 10 yearsthereafter5.3.1.1.1.6Sprinklers (extra high or greatertemperature solder type)5 years5.3.1.1.1.4Sprinklers (fast-response)At 20 years and every 10 yearsthereafter5.3.1.1.1.3Sprinklers (harsh environments)5 years5.3.1.1.2Supervisory signal devices (exceptvalve supervisory switches)Chapter 13System valvesChapter 13Valve supervisory signal devicesChapter 13Waterflow alarm devices(Mechanical)Quarterly5.3.32.1Waterflow alarm devices (vaneand pressure switch type)Semiannually5.3.32.2MaintenanceLow-point drains (dry pipe andpreaction systems)Chapter 13AnnuallySprinklers and automatic spraynozzles protecting commercialcooking equipment and ventilationsystems5.4.1.7Valves (all types)Chapter 13InvestigationObstructionChapter 14

2. In Table 6.1.1.2, correct the cross references to read as follows:Table 6.1.1.2 Summary of Standpipe and Hose Systems Inspection, Testing, and AnnuallyControl valves6.2.18Chapter 13GaugesWeekly/quarterlyChapter 13HoseAnnuallyNFPA 19626.2.5Hose connectionAnnually6.2.13Hose nozzleAnnually and after each useNFPA 19626.2.6Hose storage deviceAnnually6.2.17Hydraulic design information sign Annually6.2.32Hose valvesChapter 13Hose e-regulating devicesChapter 13TestFlow test5 years6.3.1Hose5 years/3 yearsNFPA 1962Hose connectionsAnnually6.2.1Hose valvesHydrostatic testChapter 135 years6.3.2Main drain testChapter 13Pressure control valveChapter 13Pressure-reducing valveChapter 13Supervisory signal devices (exceptvalve supervisory switches)Chapter 13Valve status testChapter 13Valve supervisory devicesChapter 13Waterflow alarm devicesChapter 13MaintenanceHose connectionsAnnuallyHose valvesValves (all types)Table 6.1.2Chapter 13Annually/as neededChapter 13

3. Correct the cross references in 8.3.3.6.3.3 and 8.3.3.6.3.4 to read as follows:8.3.3.6.3.3 If the test results are not consistent with the previous annual test, the test shall berepeated using the test arrangement described in 8.3.3.6.3.1.8.3.3.6.3.4 If testing in accordance with 8.3.3.6.3.1 is not possible, a flowmeter calibrationshall be performed and the test shall be repeated.4. In Table 9.1.1.2, correct the cross references to read as follows:Table 9.1.1.2 Summary of Water Storage Tank Inspection, Testing, and MaintenanceItemFrequencyReferenceInspectionAir pressure—tanks that have their air pressuresource supervisedQuarterly9.2.2.1Air pressure—tanks without their air pressuresource supervisedMonthly9.2.2.2Catwalks and laddersQuarterly9.2.54.1Check valvesChapter 13Control valvesChapter 13Expansion jointsAnnually9.2.54.3Heating system — tanks with supervised lowtemperature alarms connected to constantlyattended locationWeekly*9.2.32.1Heating system — tanks without supervised lowtemperature alarms connected to constantlyattended locationDaily*9.2.32.2Hoops and grillageAnnually9.2.54.4Interior — all other tanks5 years9.2.65.1.2Interior — steel tanks without corrosionprotection3 years9.2.65.1.1Painted/coated surfacesAnnually9.2.54.5Support structureQuarterly9.2. 54.1Surrounding areaQuarterly9.2. 54.2Tank — exteriorQuarterly9.2. 54.1Temperature alarms — connected to constantlyattended locationMonthly*9.2.43.2Temperature alarms — not connected toconstantly attended locationWeekly*9.2.4.3Water level — tanks equipped with supervisedwater level alarms connected to constantlyattended locationQuarterly9.2.1.1

Water level — tanks without supervised waterlevel alarms connected to constantly attendedlocationMonthly9.2.1.2Water temperature — low temperature alarmsconnected to constantly attended locationMonthly9.2.4.2Water temperature — low temperature alarms not Weeklyconnected to constantly attended location9.2.4.3TestHigh temperature limit switchesMonthly*9.3.4Level indicators5 years9.3.1Low water temperature alarmsMonthly*9.3.3Pressure gauges5 yearsChapter 13Tank heating systemPrior to heating season9.3.2Valve status testChapter 13Water level alarmsSemiannually9.3.5Check valves—Chapter 13Control valves—Chapter 13Embankment-supported coated fabric (ESCF)—9.4.6.2Water level—9.4.2Maintenance*Cold weather/heating season only.5. In Table 9.5.1.1, correct the cross references to read as follows:Table 9.5.1.1 Summary of Automatic Tank Fill Valve Inspection and TestingItemFrequencyReferenceInspectionStrainers, filters, orifices(inspect/clean)5 years13.4.1.2Enclosure (during cold 3.1.63InteriorAnnually/5 years13.4.3.1.74Annually9.5.3TestAutomatic tank fill valve

6. In Table 10.1.1.2, correct the cross references to read as follows:Table 10.1.1.2 Summary of Water Spray Fixed System Inspection, Testing, and w preventerChapter 13Check valvesChapter 13Control valvesWeekly (sealed)Chapter 13Control valvesMonthly (locked, supervised)Chapter 13Deluge valve10.2.2, Chapter 13Detection systemsNFPA 72Detector check valvesChapter 13DrainageQuarterly10.2.87Electric motor10.2.98, Chapter 8Engine drive10.2.98, Chapter 8Fire pump10.2.98, Chapter 8FittingsAnnually10.2.43, 10.2.43.1Fittings (rubber-gasketed)Annually and after each systemactivation10.2.43.1, A.10.2.4.1Gravity tanks10.2.109, Chapter 9Hangers, braces, and supportsAnnually and after each systemactivation10.2.43.2Heat (deluge valve house)Daily/weekly10.2.1.5, Chapter 13NozzlesAnnually and after each systemactivation10.2.1.1, 10.2.1.2, 10.2.1.6,10.2.5.1, 10.2.5.210.2.4PipeAnnually and after each systemactivation10.2.3.1.1, 10.2.1.2, 10.2.4,10.2.4.1Pressure tank10.2.109, Chapter 9Steam driver10.2.98, Chapter 8StrainersManufacturer's instruction10.2.76Suction tanks10.2.109, Chapter 9Water supply piping10.2.6.1, 105.2.6.2UHSWSS — controllersEach shift10.4.3UHSWSS — detectorsMonthly10.4.2UHSWSS — valvesEach shift10.4.4Operational TestBackflow preventerChapter 13Check valvesChapter 13Control valvesAnnually13.3.3.1

Deluge valve10.2.2, Chapter 13Detection systemsNFPA 72Detector check valveChapter 13Electric motor10.2. 98, Chapter 8Engine drive10.2. 98, Chapter 8Fire pump10.2. 98, Chapter 8Gravity tanks10.2.109, Chapter 9Main drain testAnnuallyChapter 13.3.3.4Manual releaseAnnually10.2.1.3, 10.3.63.5NozzlesAnnually10.2.1.3, 10.2.1.6, Section 10.3Pressure tankSection 10.2.9, Chapter 9Steam driver10.2.98, Chapter 8StrainersAnnuallySuction tanks10.2.1.3, 10.2.1.7, 10.2.7610.2.109, Chapter 9Waterflow alarmQuarterlyChapter 5Water spray system testAnnuallySection 10.3, Chapter 13Water supply flow testUHSWSS7.3.1AnnuallyValve status testSection 10.413.3.1.2.13.4MaintenanceBackflow preventerChapter 13Check valvesChapter 13Control valvesAnnually10.2.1.4, Chapter 13Deluge valve10.2.2, Chapter 13Detection systemsNFPA 72Detector check valveChapter 13Electric motor10.2.98, Chapter 8Engine drive10.2.98, Chapter 8Fire pump10.2.98, Chapter 8Gravity tanks10.2.109, Chapter 9Pressure tank10.2.69, Chapter 9Steam driver10.2.98, Chapter 8StrainersAnnually10.2.1.4, 10.2.1.6, 10.2.76Strainers (baskets/screen)5 years10.2.1.4, 10.2.1.7, A.10.2.76Suction tanksWater spray system10.2.109, Chapter 9Annually10.2.1.4, Chapter 13

7. In Table 11.1.1.2, correct the cross references to read as follows:Table 11.1.1.2 Summary of Foam-Water Sprinkler System Inspection, Testing, spectionControl valve(s)Weekly/monthlyDeluge/preaction valve(s)Chapter 1311.2.1, Chapter 13Detection systemSee NFPA 7211.2.2Discharge device location (spraynozzle)Monthly11.2.54Discharge device location (sprinkler)Annually11.2.54Discharge device position (spraynozzle)Monthly11.2.54Discharge device position (sprinkler)Annually11.2.54Drainage in system areaQuarterly11.2.87Fire pump(s)Chapter 8Fittings corrosionAnnually11.2.32Fittings damageAnnually11.2.32Foam concentrate strainer(s)Quarterly11.2.7.26.4GaugesSee Chapter 13Chapter 13Hangers/braces/supportsAnnually11.2.3Pipe corrosionAnnually11.2.32Pipe damageAnnually11.2.32Proportioning system(s) — allMonthly11.2.98Strainer(s) — Mainline5 years11.2.6.1Water supply piping11.2.65.1Water supply tank(s)Chapter 9Waterflow devicesSee Chapter 13Chapter 13Backflow preventer(s)AnnuallyChapter 13Complete foam-water sprinklersystem(s) (operational test)Annually11.3.2, 11.3.3Control valve(s)See Chapter 13Chapter 13Deluge/preaction valve(s)See Chapter 1311.2.1Detection systemSee NFPA 7211.2.2Discharge device locationAnnually11.3.2.67Discharge device obstructionAnnually11.3.2.67Discharge device positionAnnually11.3.2.67Test

Fire pump(s)See Chapter 8Foam concentrate strainer(s)Annually11.2.7.2Foam-water solutionAnnually11.3.5Manual actuation device(s)Annually11.3.4Proportioning system(s) — allAnnually11.2.9Valve status testChapter 13Water supply flow test5 years7.3.1Water supply pipingAnnuallyChapter 10Water supply tank(s)See Chapter 9Waterflow devicesSee Chapter 13Chapter 13MaintenanceBackflow preventer(s)See Chapter 13Bladder tank typeFoam concentrate tank —hydrostatic testSight glass10 years11.4.4.210 years11.4.4.1Check valve(s)See Chapter 13Control valve(s)See Chapter 13Deluge/preaction valvesSee Chapter 1311.2.1Detection systemSee NFPA 7211.2.2Detector check valve(s)See Chapter 13Fire pump(s)See Chapter 8Foam concentrate pump operationMonthly11.4.6.1, 11.4.7.1Foam concentrate samplesAnnually11.2.109Foam concentrate strainer(s)QuarterlySection 11.4Balancing valve diaphragm5 years11.4.7.3Foam concentrate pump(s)5 years (see Note)11.4.7.2Foam concentrate tank10 years11.4.7.4Foam concentrate tank — corrosion 10 yearsand pickup pipes11.4.5.1Foam concentrate tank — drain and 10 yearsflush11.4.5.2Pressure vacuum vents5 years11.4.8Ball drip (automatic type) drainvalves5 years11.4.3.1Corrosion and hydrostatic test10 years11.4.3.34In-line balanced pressure typeLine typeProportioning system(s) standardpressure type

Foam concentrate tank — drain and 10 yearsflush11.4.3.2Standard balanced pressure typeBalancing valve diaphragm5 years11.4.6.3Foam concentrate pump(s)5 years (see Note)11.4.6.2Foam concentrate tank10 years11.4.6.4Strainer(s) — mainline5 years11.2.76.1Water supplyAnnually11.2.6.15Water supply tank(s)See Chapter 9Chapter 9Note: Also refer to manufacturer's instructions and frequency. Maintenance intervals other thanpreventive maintenance are not provided, as they depend on the results of the visual inspectionsand operational tests. For foam-water sprinkler systems in aircraft hangars, refer to theinspection, test, and maintenance requirements of NFPA 409, Table 11.1.1.8. In Table 13.1.1.2, correct the cross references to read as follows:Table 13.1.1.2 Summary of Valves, Valve Components, and Trim Inspection, Testing, flow Prevention AssembliesReduced pressureWeekly/monthly13.67.1Reduced-pressure detectorsWeekly/monthly13.67.15 years13.4.2.1SealedWeekly13.3.2.1Locked or electrically supervisedMonthly13.3.2.1.1Check ValvesInteriorControl ValvesDry Pipe Valves/Quick-Opening DevicesGaugesWeekly/monthly13.2.7Enclosure (during cold InteriorAnnually13.4.4.1.55.1.4Strainers, filters, orifices5 years13.4.4.1.65.1.513.4.4.15.1Deluge ValvesEnclosure (during cold 1.53InteriorAnnually/5 years13.4.4.1.64

Strainers, filters, orifices5 years13.4.4.1.75Fire Department ConnectionsQuarterly13.78.1Enclosure (during cold 1.63InteriorAnnually/5 years13.4.3.1.74Strainers, filters, orifices5 years13.4.3.1.85Preaction ValvesPressure-Reducing and Relief ValvesSprinkler systemsQuarterly13.5.1.1Hose connectionsAnnually13.5.2.1Hose racksAnnually13.5.3.1Fire pumpsCasing relief valvesWeekly13.5.76.1, 13.5.7.1.1Pressure-relief valvesWeekly13.5.76.2, 13.5.7.2.1Valve Supervisory Signal InitiatingDeviceSemiannual13.3.2.1.23Supervisory Signal Devices (exceptvalve supervisory nterior5 years13.4.1.2Strainers, filters, orifices5 years13.4.1.2Hose y13.3.3.1OperationAnnually13.3.3.1Valve Status TestAfter the control valve is reopened13.3.3.4SupervisoryAnnually13.3.3.5Alarm ValvesTestingBackflow Prevention AssembliesControl ValvesDeluge ValvesTrip testAnnually/3 years13.4.4.2.3Air leakage3 years13.4.45.2.9Priming waterQuarterly13.4.45.2.1Low air pressure alarmQuarterly13.4.45.2.6Quick-opening devicesQuarterly13.4.45.2.4Trip testAnnually13.4.45.2.2Dry Pipe Valves/Quick-Opening Devices

Full flow trip test3 years13.4.45.2.2.2Gauges5 years13.2.7Main DrainsAnnually/quarterly13.2.5Preaction ValvesPriming waterQuarterly13.4.3.2.1Low air pressure alarmsQuarterly/annually13.4.3.2.10Trip testAnnually/3 years13.4.3.2.3Air leakage3 years13.4.3.2.65Sprinkler systems5 years13.5.1.2Circulation reliefAnnually13.5.76.1.2Pressure relief valvesAnnually13.5.76.2.2Hose connections5 years13.5.2.2Hose racks5 years13.5.3.2Hose valvesAnnually13.6.2Waterflow AlarmsQuarterly/semiannually13.2.6Supervisory Signal Devices (exceptvalve supervisory switches)Annually13.2.8.2Control ValvesAnnually13.3.4Dry Pipe Valves/Quick-Opening DevicesAnnually13.4.45.3Hose ValvesAnnually13.6.3Preaction ValvesAnnually13.4.3.3Deluge ValvesAnnually13.4.4.3Pressure-Reducing and Relief ValvesMaintenance9. In Table 13.11.1, correct the cross references to read as follows:Table 13.11.1 Summary of Component Action RequirementsComponentAdjustRepair/Recondition ReplaceInspection, Test, andMaintenance ProceduresWater delivery componentsPost indicator and wall indicatorvalvesXXX(1) Inspect for leaks at systempressure(2) Perform full operational testconforming to 13.3.3.1(3) Perform spring torsioninspection conforming to13.3.3.1 and 13.3.3.2

(4) Verify target visibility atshut and full open position(5) Test supervisory device(6) Main drain testControl valves other than postindicator and wall indicator valvesXXX(1) Inspect for leaks at systempressure(2) Perform full operational testconforming to 13.3.3.1(3) Perform spring torsioninspection for OS&Y valvesconforming to 13.3.3.2(4) Verify supervisory device(5) Main drain testAlarm check valveXXX(1) Inspect for leaks at systempressure per 13.4.1(2) Test all alarms andsupervisory signals affected bythe alarm valve(3) Main drain testDry pipe valveXXX(1) Inspect for leaks at systempressure(2) Trip test per 13.4.45.2(3) Inspect condition of valveseat(4) Test all dry pipe systemalarms and supervisory signals(5) Main drain testDeluge/preaction valveXXX(1) Inspect for leaks at systempressure per 13.4.4/13.4.3(2) Trip test(3) Inspect condition of valveseat(4) Test all deluge/preactionsystem alarms and supervisorysignals(5) Main drain testQuick-opening deviceXXX(1) Inspect for leaks at systempressure per 13.4.4.2.25.2.9(2) Trip test(3) Main drain testPressure-regulating device —hose valvesXXX(1) Inspect for leaks at systempressure per 13.5.12(2) Full flow test

(3) Main drain test (Only whena control valve has been closed)Pressure-regulating devices —other than hose valvesXXX(1) Inspect for leaks at systempressure per Section 13.5(2) Test pressure setting withfull flow and without flow(3) Test supervisory device andalarm(4) Main drain testHose valveXXX(1) Inspect for leaks at systempressure per Section 13.56(2) Main drain testBackflow prevention deviceXXX(1) Inspect for leaks at systempressure per Section 13.67(2) Forward flow test per13.67.2.1(3) Test supervisory device andalarm(4) Main drain testCheck valvesXXX(1) Inspect for leaks at systempressure per 13.4.2(2) Inspect for leaking throughcheck valve(3) Main drain testFire department connectionXX(1) Inspect for leaks at systempressure per Section 13.78(2) Main drain test (Only whena control valve has been closed)Fire department connection —sprinkler system(s)X(1) Isolate and hydrostatic testfor 2 hours at 150 psi (10 bar)(2) Main drain test (Only whena control valve has been closed)Fire department connection —other than sprinkler system(s)X(1) Isolate and hydrostatic testfor 2 hours at 50 psi (3.5 bar)above the normal workingpressure [200 psi (14 bar)minimum](2) Main drain test (Only whena control valve has been closed)StrainersXXXInspect and clean in accordancewith manufacturer'sinstructionsMain drain valvesXXXMain drain test per 13.2.5XCalibrate per 13.2.7Gauges

Alarm and supervisorycomponentsAlarm deviceXXXTest for conformance withNFPA 13 and/or NFPA 72Supervisory deviceXXXTest for conformance withNFPA 13 and/or NFPA 72XXXSee 8.3.3.38 and 13.5.76XVerify relief valve is listed orapproved for the applicationand set to the correct pressureXInspect for compliance withNFPA 13 and 13.3.1System protection componentsPressure relief valve — fire pumpinstallationPressure relief valve — other thanfire pump installationInformational componentsIdentification signsXX10. In Table A.3.3.7, correct the cross references to read as follows:Table A.3.3.7 Water-Based Fire Protection System Inspection and Testing FindingsItemFindingReferenceCritical NoncriticalImpairment Deficiency DeficiencyChapter 5: Sprinkler Systems —InspectionAll sprinklersLeaking —5.2.1.1.1spraying orrunning waterAll sprinklersLeaking —5.2.1.1.1dripping waterAll sprinklersForeignmaterialattached orsuspendedfromAll sprinklersSpray pattern 5.2.1.1.1obstructed —less than 18 in.(457 mm) or36 in. 915mm) porary ornonpermanent5.2.1.1.1XXXX

(signs,banners,decorations,etc.)All sprinklersLightly loaded 5.2.1.1.1XStandard-responseOne sprinkler 5.2.1.1.1sprinklers inand less thannonresidential occupancies 50% ofsprinklers incompartmentis heavilyloaded orcorroded;paintedoperatingelement, bulb,deflector, orcoverplate;improperorientation;glass bulb haslost fluid;damagedXStandard-responseTwo or more 5.2.1.1.1sprinklers insprinklers innonresidential occupancies compartmentare heavilyloaded orcorroded;paintedoperatingelement, bulb,deflector, orcoverplate;improperorientation;glass bulb haslost fluid;damagedX5.2.1.1.1Anysprinklers,heavily loadedor corroded;paintedoperatingelement, bulb,deflector, orcoverplate;improperorientation;glass bulb hasXFast-response element,quick-response, residentialsprinklers and standardresponse in residentialoccupancies

lost rcoverplatescaulked orglued toceilingEscutcheons andcoverplates5.2.1.1.6Missingrecessed orflushescutcheons,concealedcoverplatewith deflectorand operatingelement incorrectpositionEs

Pressure tank Section 10.2.9, Chapter 9 Steam driver 10.2.98, Chapter 8 Strainers Annually 10.2.1.3, 10.2.1.7, 10.2.76 Suction tanks 10.2.109, Chapter 9 Waterflow alarm Quarterly Chapter 5 Water spray system test Annually Section 10.3, Chapter 13 Water supply flow test 7.3.

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