ML18040A786
| ML18040A786 | |
| Person / Time | |
|---|---|
| Site: | Susquehanna  |
| Issue date: | 01/31/1985 |
| From: | DOBSON P H, KNIGHT S M FACTORY MUTUAL RESEARCH CORP. |
| To: | |
| Shared Package | |
| ML17139D154 | List: |
| References | |
| NUDOCS 8509060203 | |
| Download: ML18040A786 (26) | |
Text
TECHNICALREPORTEVALUATIONOFSELECTEDFIREDOORANDDOORFRAMEASSEMBLIESBySamuelM.KnightPreparedfor:PennsylvaniaPowerandLightCompany"SusquehannaSteamElectricStation"RoutellSalemTownship,Pennsylvania15635FMIndexNo.38492.55NSJanuary1985<<..85090b0203'50904PDR"..ADOCK05000387I~.-"P.,DR,'.~.,"JApprovedby~IFactoryMutualResearch)1StBoston-ProvdenceTurnpikeNorwood.Massachusetts02062P.H.DobsonSeniorEngineerFMRC 7~~
FACTORYMUTUALRESEARCHCORPORATIONPURPOSEAnevaluationofselectedfiredoorsprotectingsafety-relatedareaswasconductedforPennsylvaniaPowerandLightCompany(PP6L)atSusquehannaSteamElectricStationUnits1and2.Thepurposeoftheevaluationwastoexamine,selectedfiredoorstodeterminewhetherfieldmodificationsmadetolabeledfiredoors(doorswhichhavebeentestedandacceptedbyanationallyrecognizedlaboratory)sincetheirinstallationvoidedthefireresistanceratingofthedoors;andtoexamineothernonlabeleddoorassembliesandrenderanopinionontheirfireresistancerating.
FACTORYMUTUALRESEARCHCORPORATIONSUMMARYANDCONCLUSIONS1.Thelabeledfiredoorandframeassembliesandthelabeledaccesspanelareexpectedtoprovidetheleveloffireresistancestatedonthelabel.2.Thespecialpurpose(watertight)doorandframeassemblyexaminedshouldprovideaminimumofl-l/2hrfireresistance.3.TomeetFMrecormendationsventilationlouversinthedoorstothefourchasescontainingelectricalpanelsandcablesatelevation771oftheControlBuildingshouldberelocatedtothefaceofthecablechaseneartheceilingtoachievefastresponse.3.3.
D FACTORYMUTUALRESEARCHCORPORATIONTABLEOFCONTENTSSectionPURPOSESUMMARYANDCONCLUSIONSINTRODUCTIONFIREDOOREVALUATIONTitle~PaeIIIAPPENDIXA2.1FireDoorsandDoorFrameAssemblies2.2SpecialPurposeDoor2e3ElectricalEquipmentChasesRECOMMENDATIONSFIREDOOROBSERVATIONSandAccessPanels24 g1 FACTORYMUTUALRESEARCHCORPORATIONINTRODUCTIONTheplantwasvisitedduringJanuary7and8,1985.ThewriterwasaccompaniedbyMessrs.T.Baileys,PP6LFireProtectionEngineer,andL.J.Mattern,FMEA,ResidentLossPreventionSpecialist.Sixty-sixdoorsanddoorframes,onelabeledaccesspanel,andoneunlabeledspecial-purposedoorwereexaminedduringthisvisit.TheseassemblieswerelocatedintheControlBuildingandUnit1andUnit2ReactorBuildings.ThewriterisaProspectEngineerwith20yearsexperienceatFactoryMutualResearchCorporation(FMRC).Hisprimaryresponsibilityis:1)testinganddeterminationoffireratingforfiredoors;and2)examinationofinstalledunlabeleddoorstodeterminetheirfireresistanceratingforbuildingauthorities.ThewriterhasservedontheNationalFireProtectionAssociation"FireDoorand'Jindow"Committee(NFPA80)for18years.
~~FACTORYMUTUALRESEARCHCORPORATIONFIREDOOREVALUATIONLabeledfiredoorsanddoorframes,alabeledaccesspanel,andanunlabeledspecialpurposedoorandframewereexaminedduringthisvisittoSusquehannaSteamElectricStationattherequestofPennsylvaniaPowerandLightCompany(PP6L).2.1FIREDOORSANDDOORFRAMEASSEMBLIESANDACCESSPANELSSixty-sixdoorsanddoorframesandoneaccesspanelwereexaminedtodeterminewhether1)labelswereinplaceandproperlyattached,2)modificationshadbeenmadetothedoororpanel,and3)modificationsmadewouldvoidthefireresistanceratingofthedoororpanel.Ofthe66doorsexamined,62doorswerelabeled,4doorswerenotlabeledorhadlabelslooselyattached.Forty-twoofthelabeledfiredoorshadbeenmodified.2.1.1LabeledDoorswithNoModificationsLabeleddoorswerevisuallyexaminedtodeterminethattheretwasnophysicaldamagetothedoorandthathardwaresuppliedaspartoftheassemblyfunctionedproperlytocloseandlatchthedoorwhenthedoorwasreleasedfromtheopenposition.Firedoorassemblieswhichhavenotbeenmodifiedshouldhavethefireresistanceratingindicatedonthelabel.2.1.2LabeledFireDoorsandPanelwithModificationsFiredooranddoorframeassemblieswhichhavebeentestedbyanationallyrecognizedlaboratory,suchasFactoryMutualResearchCorporation(FMRC)orUnderwriter'sLaboratories(UL),havealabelattachedtoboththedoorandtheframe.Thefireresistanceratingisnotedonthelabel.AgenerallyacceptedpreceptofFMRCandUListhatanyalterationoftheassemblyfromthesuccessfullyfiretestedconstructionvoidsthefireresistanceratingindicatedonthelabel.However,therearereasonsinthenuclearindustryformodifyingafiredoorassembly;amajorreasonissecurity.Caremustbeusedwhenaddingsecurityhardwaretothedoorand/orframetoassurethatthishardwarewillhaveminimumimpactonfireresistancerating,'oftheassembly.
1PACTORYMUTUALRESEARCHCORPORATIONIntheexamination,firedoorassemblieswithmodificationshadoneormoreofthefollowingadditionsoralterations:1.Switchesorelectromagnetsattachedtotheheaderofthedoorframe.Wiringisinrigidmetalconduitfromthecardreadertothefaceofthedoorframe.2.Steeloraluminumanglestrips2in.to4in.wide,1/8in.thick,and4in.to6in.longattachedtothetopofthedoorbymachinescrews.Theanglestripsactinconcertwiththeswitchorelectromagnet.3.Weatherstrippingusedtominimizeairleakagearounddoorswhereapressuredifferentialexistsbetweenadjoiningareas.Weatherstrippingwasattachedtothedoorordoorframebymeansofmachinescrews.ThelabeledfiredoorsexaminedareidentifiedinAppendixA.AlsoincludedinthisAppendixarecomaentsonadditions/modificationstodoorsandframes.A1-1/2hrlabeledaccesspanelNo.7006islocatedintheControlBuildingatelevation754.The'panelis3ftby3ftandisequippedwithamicroswitchontheframe.Modificationsmadetolabeledfiredoorsandframesandtheaccesspanelarenotexpectedtoaffectthefireresistanceratingoftheseassemblies.2.1.3FireDoorsNotLabeledDoorNo.111(elevation670,ReactorBldg.Unit1)andDoorNo.201(elevation683,ReactorBldg.Unit1)hadnolabels.ThesedoorswerecomparedwithDoorNo.110(elevation670,ReactorBldg,Unit2)whichhadal-l/2hrlabelwiththefollowingresults:2.Allthreehadthesamedimensions(height,widthandthickness)andthesameidentificationtags(exceptfortheopeningnumber)rivetedtothelatchedgeofthedoor.Thespacingofinternalhorizontalstiffenerswasdeterminedtobeapproximately8to12in.oncenteronallthreedoors.Thiswasdonebymeansofastethoscope.
FACTORYMUTUALRESEARCHCORPORATION3.Thesametypeofinsulationwasusedinthecoreofallthreedoors(glassfiberbatts).Thiswasestablishedbyremovingscrewsfromdoorhingesonalldoorsandextractingdoorfillermaterial.4.Thethicknessofthemetalfacesheetonalldoorswasthesame(0.045in.or18ga).Thiswasdeterminedbymeasuringmetalthicknessbymeansofaspeciallyadaptedmicrometer.DoorNo.115(elevation670ofReactorBldg.Unit1)alsohadnolabel.Thisdoorwasapparentlydesignedasabulletproofdoorwithhingesweldedinplace.Itcouldnotbeinternallyexaminedinthemannerdescribedabove.ThedoorwasmanufacturedbytheChicagoBulletProofDoorCompany.OtherdoorsmadebythesamecompanywerelocatedintheControlBuilding(Door462atelevation729)andintheReactorBuilding(Door571atelevation818).Boththeabovedoorshavel-l/2hrlabels.Allthreedoorshave1)thesamedimensions,2)thesamehardware,3)asolidcore.Basedonthewriter'experienceauditingfiredoormanufacturingplantsitisbelievedthatDoorNo.115wouldalsohaveal-l/2hrfirerating.However,sincethedoorcouldnotbeinternallyexamined,themanufacturerwouldhavetobecontactedandaskedtocomparetheconstructionofthisdoorwiththe1-1/2hrfirerateddoorstoconfirmtheaboVe.Door587hadalooselyattachedlabel.Thisdoorwouldnormallybetreatedasifithadnolabel.Thedoorwasnotphysicallyexaminedasabovebecauseitwaslocatedinashortcorridorwithalabeledfiredooroneitherside(Door586andastairwaydoor).2.2SPECIALPURPOSEDOORAnevaluationwasmadeofanunlabeledspecial-purpose(flood)doortodeterminewhetheritwouldprovidea1-1/2hrfireresistancerating.Thedoorexaminedwasatelevation645intheCoreSprayPumpRoomofUnit1~ThisareaisindicatedasArea1-1Binthe"FireProtectionReviewReport".Thedoorwas3ftby7ftandconsistedof1/4in.platesteelwith1in.x2in.x3/16in.steelchannelforperipheralframingandhorirontalstiffening10in.oncenter.Thedoorwaslatchedbytwelve1in.square,steelbarlatchesengagingthe5/8in.thicksteelframeonthetop,bottomandsides.Gasketingisemployedtomakeawaterproofsealwiththe5/8in.thicksteelframe.Steeldoorsofthistypehavenotbeentestedforfireresistanceinthiscountry.TheconstructionofthisdoorwascomparedtotheRulesoftheFireOfficesCommittee(FOC),Section1,Specification1,fromGreatBritain,
1]1FACTORYMUTUALRESEARCHCORPORATIONwhichstatesthatdoorsfabricatedinaccordancewiththoserulesmaybeexpectedtoprovide6hrs'ireresistancewhenthereisonedooroneachsideoftheopening.Thisisbasedonnumeroussuccessfulfiretestsofthesedoorsinthatconfiguration.Firetestsonsingledoorsofthisdesign,conductedtorequirementsofBritishStandard476,Part8,havesatisfiedrequirementsofthatstandardfor'hours.ThistestmethodisequivalenttothetestprocedureusedintheU.S.,ASTME-152,indeterminingadoor'sfireresistancerating,withoneexception:ahosestreamtestisnotrequiredinBS476.Thisexceptionisnotconsideredcriticalforsteeldoorssincethehosestreamisappliedtothehingesideofthedoorwhichdrivesthedooragainsttheframestop.RulesoftheFOCrequiretwopointlatchesofnolessthan3/8in.diametersteelinsuchdoors.Thewaterproofdoorinquestionhastwelve1in.squaresteellatchbarswhichengagetheframe;hence,thedesiredl-l/2hrfireresistantperformancecanreasonablybeexpectedinafiresituation.2.3ELECTRICALEQUIPMENTCHASESAnevaluationwasmade.ofdoorstochasescontainingelectricalequipmentatelevation771intheControlBuilding.Thesedoorswerenumbered594,595,598,andoneunnumbered.Thedoorsarefittedwithafusiblelink-1Iactuatedlouver(llin.xllin.)locatedinthetopthirdofthedoor.Thedoorsandlouversborel-l/2hrULlabels~FMdoesnotapprovelabeledfiredoorswithlouvers.However,ULtestsandlistslouversforinstallationinlabeledfiredoors.TheNationalFireProtectionAssociation(NFPA)allowstheuseoflouversinlabeledfiredoorswheretheopeningisnotinanexitorlocatedwhereproductsofcombustionflowingthroughthelouveropeningpriortoitsoperationcouldjeopardizetheuseofexits.Thewallconstructionofthecablechasesconsistsoftwo1in.thicklayersofTypeXgypsumwallboardonsteelstuds.Thewallboardisonthecorridorsideonlywithnosheathingprovidedonthechasesideofthestuds.Thisisnotatestedfireratedconstruction.TomeetFMrecommendationslouversshouldberelocatedtothefaceofthecablechaseneartheceilingtoachievefastresponse.Louveropeningsinthedoorshouldbeclosedwith16gagesheetmetalwithaminimum2in.overlaparoundtheopening.Thesheetmetalcoveringshouldbeattachedwithmachinescrews5in.oncenter.
FACTORYMUTUALRESEARCHCORPORATIONThecons'tructionoftheelectricalequipmentchaseissuchthatal-l/2hrfireresistancecanbeexpectediffireexposureisonthecorridorside.However,ifthefireexposurecamefromwithinthechase,fireresistanceratingwouldbeminimal.Expansi'onoftheexposedsteelstudsduetoafireinsidewouldresultinmovementoffastenersholdingthegypsumwallboardin.placewithpossiblelossofstructuralintegrityofthewall.
FACTORYMUTUALRESEARCHCORPORATIONRECOMMENDATIONSEightdoorassembliesinControlandReactorBuildings,requirethefollowing:DoorNo.115(Elevation670,ReactorBuilding,Unit1):Themanufacturershouldbecontactedtodeterminethefireratingofthisdoor.i'~DoorNo.559,Elevation771,ControlBuilding:Thelatchmechanismonthisfireexitdeviceneedsrepair.Latchingisnotreliableand-boltretractioniserratic.i3.DoorNo.586,Elevation783,ControlBuilding:Thisdoorwaspreparedforadeadboltwhichhasnotbeenprovided.The1in.diameterholeinthefacesheetshouldbecoveredwith16gagesheetmetalfastenedwithmachinescrews.TomeetFMrecoamendationsventilationlouversinthedoorstothefourchasescontainingelectricalpanelsandcablesatElevation771,ControlBuilding(Doors.No.594,595,598,andoneunnumbered)should,berelocatedtothefaceofthecablechaseneartheceilingtoachievefastresponse.Louveropeningsinthedoorshouldbeclosed-~~~~~with16gagesheetmetalwithaminimum2in.overlaparoundtheopening.Thesheetmetalshouldbeattachedwithmachinescrews5in.oncenter.DoorNo.601,Elevation779ReactorBuilding:Oneboltattachingtheframetothewallismissingandshouldbereplaced.Also,thecloserattachmenttotheframeheaderislooseandshouldbetightened.
'leFACTORYMUTUALRESEARCHCORPORATIONAPPENDIXAFIREDOOROBSERVATIONSlof3BUILDINGDOOR"NO~ELEV-DOORATIONLABELEDMODIFICATIONSCOMMENTSOlOcOC3CPmC44JC4~rf4l44JQ4lO,)Jy]CONTROLBLDG263317457462463465466468538542544553554555556557558559560561562563564567568698698729729729729729729754754754771771771771771771771771771771771771771771573580585586771783783783569771570771571771572771YesYesYesYesYesYesYesYesYesYesYesYesYesYesYesYesYesYesYesYesYesYesYesYesYesYesYesYesYesYesYesYesYesXXXXXXXXXXXXXXXXXXXXXXXXXXXSeeSectionIIISeeSectionIII h
FACTORYMUTUALRESEARCHCORPORATION'llAPPENDIXAFIREDOOROBSERVATIONS2of3BUILDINGDOORELEV-DOORNO~ATIONLABELEDMODIFICATIONSCOMMENTSOmePeLlC~rlQCO0CljC7m0'00404JCJQD'."LCONTROLBLDG587783594771595771598771(SeeNote1)XYesYesYes730806Yes731806Yes7006754YesYesYesNoX115670No201683NoXREACTORBLDGUNIT170670109670111670XX(SeeNote2)XXXXXSeeSectionIIISeeSectionIIISeeSectionIII+lin'Microswitchonframe,(seeNote3)~IiExtraheavydutyhingesAppearssameasDoorNo.110(elev.670ReactorBldg.Unit2)~AppearssameasDoorNo.462(elev.729ControlBldg.)andDoorNo.571(elev818ReactorIBldg.)AppearssameasDoorNo.110(elev.670ReactorBldg.Unit2)'I415.719419719421719425719517749519749523749525749571818601779627779803818806818807818YesX,.YesXYesXYesXYesXYesXYesXYesXYesYesXYesYesYesYesXXXXXXXXXSeeSectionIII10 0
FACTORYMUTUALRESEARCHCORPORATIONAPPENDIXAFIREDOOROBSERVATIONS3of3BUILDINGDOORELEV-DOORNO.ATIONLABELEDMODIFICATIONSCOMMENTSREACTORBLDGUNIT272110112113114116518ieNOTES:2~3~0eg44JC~r400>rr'0M0Cg'4gdol<g~4Jm<<0oeeO670670670779779670749YesYesYesYesYesYesYesXXXXXXXXXXAirlockswitchAirlockswitchNewcloserreinforcementonfaceofdoorThelabelonthisdoorhasminordamageandislooselyattached.Thiscastsaquestionerstoitslegitimacy.Inthisinstance,thequestionismoot,asthislocationisinashortcorridorwithanacceptablefiredooroneithersideofit,(DoorNo.586andastairwaydoor.)Thereisafourthdoorad~scenttothisdoorwithnoopeningidentification.Thisisa3ftx3ft,l-l/2hrratedaccesspanel.
SUSQUEHANNASTEAMELECTRICSTATION-UNITS162PIREPROTECTIONPROGRAM-CONCERN81DOCKETSNO.50-38750-388APPENDIXA-EXEMPTIONREQUESTSEXEMPTIONREQUESTNO.3ATTACHMENT2 P'ICi'I FactoryIlutualResearchAugust16,19851151Boston-ProvidenceTurnpikeP.O.Box9102Norwood,Massachusetts02062Telephone(617)7624300Telex92.4415Mr.ThomasGormanNuclearPlantEngineeringA-63PennsylvaniaPowerandLightCompanyTwoNorthNinthStreetAllentown,PA18101
Subject:
FireDoorEvaluation
DearMr.Gorman:
The-followingisthereportofSamKnight'svisitonMay7,1985toevaluatefireresistanceoffourdoorsandframesintheUnit1and2ReactorBuildings.g~HPaulH.DobsonSeniorEngineerPHD/)malceoDoP.L.S.R.Kohn,PP&LH.Dobson,FMRCJ.Matern,FMEA-Phil.Knight,FMRCW.Newcomb,ABO-Waltham Q(