ML18040A786

Evaluation of Selected Fire Door & Door Frame Assemblies, Technical Rept

ML18040A786
Person / Time
Site:	Susquehanna
Issue date:	01/31/1985
From:	DOBSON P H, KNIGHT S M FACTORY MUTUAL RESEARCH CORP.
To:
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ML17139D154	List: ML17139D153 ML17139D157 ML17139D159 ML18040A786 ML18040B119
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NUDOCS 8509060203
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TECHNICAL REPORTEVALUATION OFSELECTEDFIREDOORANDDOORFRAMEASSEMBLIES BySamuelM.KnightPreparedfor:Pennsylvania PowerandLightCompany"Susquehanna SteamElectricStation"RoutellSalemTownship, Pennsylvania 15635FMIndexNo.38492.55NSJanuary1985<<..85090b0203'50904 PDR"..ADOCK05000387I~.-"P.,DR,'.~.,"J Approvedby~IFactoryMutualResearch)1StBoston-Provdence TurnpikeNorwood.Massachusetts 02062P.H.DobsonSeniorEngineerFMRC 7~~

FACTORYMUTUALRESEARCHCORPORATION PURPOSEAnevaluation ofselectedfiredoorsprotecting safety-related areaswasconducted forPennsylvania PowerandLightCompany(PP6L)atSusquehanna SteamElectricStationUnits1and2.Thepurposeoftheevaluation wastoexamine,selectedfiredoorstodetermine whetherfieldmodifications madetolabeledfiredoors(doorswhichhavebeentestedandacceptedbyanationally recognized laboratory) sincetheirinstallation voidedthefireresistance ratingofthedoors;andtoexamineothernonlabeled doorassemblies andrenderanopinionontheirfireresistance rating.

FACTORYMUTUALRESEARCHCORPORATION SUMMARYANDCONCLUSIONS 1.Thelabeledfiredoorandframeassemblies andthelabeledaccesspanelareexpectedtoprovidetheleveloffireresistance statedonthelabel.2.Thespecialpurpose(watertight)doorandframeassemblyexaminedshouldprovideaminimumofl-l/2hrfireresistance.

3.TomeetFMrecormendations ventilation louversinthedoorstothefourchasescontaining electrical panelsandcablesatelevation 771oftheControlBuildingshouldberelocated tothefaceofthecablechaseneartheceilingtoachievefastresponse.

3.3.

D FACTORYMUTUALRESEARCHCORPORATION TABLEOFCONTENTSSectionPURPOSESUMMARYANDCONCLUSIONS INTRODUCTION FIREDOOREVALUATION Title~PaeIIIAPPENDIXA2.1FireDoorsandDoorFrameAssemblies 2.2SpecialPurposeDoor2e3Electrical Equipment ChasesRECOMMENDATIONS FIREDOOROBSERVATIONS andAccessPanels24 g1 FACTORYMUTUALRESEARCHCORPORATION INTRODUCTION TheplantwasvisitedduringJanuary7and8,1985.Thewriterwasaccompanied byMessrs.T.Baileys,PP6LFireProtection

Engineer, andL.J.Mattern,FMEA,ResidentLossPrevention Specialist.

Sixty-six doorsanddoorframes,onelabeledaccesspanel,andoneunlabeled special-purpose doorwereexaminedduringthisvisit.Theseassemblies werelocatedintheControlBuildingandUnit1andUnit2ReactorBuildings.

ThewriterisaProspectEngineerwith20yearsexperience atFactoryMutualResearchCorporation (FMRC).Hisprimaryresponsibility is:1)testinganddetermination offireratingforfiredoors;and2)examination ofinstalled unlabeled doorstodetermine theirfireresistance ratingforbuildingauthorities.

ThewriterhasservedontheNationalFireProtection Association "FireDoorand'Jindow"Committee (NFPA80)for18years.

~~FACTORYMUTUALRESEARCHCORPORATION FIREDOOREVALUATION Labeledfiredoorsanddoorframes,alabeledaccesspanel,andanunlabeled specialpurposedoorandframewereexaminedduringthisvisittoSusquehanna SteamElectricStationattherequestofPennsylvania PowerandLightCompany(PP6L).2.1FIREDOORSANDDOORFRAMEASSEMBLIES ANDACCESSPANELSSixty-six doorsanddoorframesandoneaccesspanelwereexaminedtodetermine whether1)labelswereinplaceandproperlyattached, 2)modifications hadbeenmadetothedoororpanel,and3)modifications madewouldvoidthefireresistance ratingofthedoororpanel.Ofthe66doorsexamined, 62doorswerelabeled,4doorswerenotlabeledorhadlabelslooselyattached.

Forty-two ofthelabeledfiredoorshadbeenmodified.

2.1.1LabeledDoorswithNoModifications Labeleddoorswerevisuallyexaminedtodetermine thattheretwasnophysicaldamagetothedoorandthathardwaresuppliedaspartoftheassemblyfunctioned properlytocloseandlatchthedoorwhenthedoorwasreleasedfromtheopenposition.

Firedoorassemblies whichhavenotbeenmodifiedshouldhavethefireresistance ratingindicated onthelabel.2.1.2LabeledFireDoorsandPanelwithModifications Firedooranddoorframeassemblies whichhavebeentestedbyanationally recognized laboratory, suchasFactoryMutualResearchCorporation (FMRC)orUnderwriter's Laboratories (UL),havealabelattachedtoboththedoorandtheframe.Thefireresistance ratingisnotedonthelabel.Agenerally acceptedpreceptofFMRCandUListhatanyalteration oftheassemblyfromthesuccessfully firetestedconstruction voidsthefireresistance ratingindicated onthelabel.However,therearereasonsinthenuclearindustryformodifying afiredoorassembly; amajorreasonissecurity.

Caremustbeusedwhenaddingsecurityhardwaretothedoorand/orframetoassurethatthishardwarewillhaveminimumimpactonfireresistance rating,'of theassembly.

1PACTORYMUTUALRESEARCHCORPORATION Intheexamination, firedoorassemblies withmodifications hadoneormoreofthefollowing additions oralterations:

1.Switchesorelectromagnets attachedtotheheaderofthedoorframe.Wiringisinrigidmetalconduitfromthecardreadertothefaceofthedoorframe.2.Steeloraluminumanglestrips2in.to4in.wide,1/8in.thick,and4in.to6in.longattachedtothetopofthedoorbymachinescrews.Theanglestripsactinconcertwiththeswitchorelectromagnet.

3.Weatherstripping usedtominimizeairleakagearounddoorswhereapressuredifferential existsbetweenadjoining areas.Weatherstripping wasattachedtothedoorordoorframebymeansofmachinescrews.Thelabeledfiredoorsexaminedareidentified inAppendixA.AlsoincludedinthisAppendixarecomaentsonadditions/modifications todoorsandframes.A1-1/2hrlabeledaccesspanelNo.7006islocatedintheControlBuildingatelevation 754.The'panel is3ftby3ftandisequippedwithamicroswitch ontheframe.Modifications madetolabeledfiredoorsandframesandtheaccesspanelarenotexpectedtoaffectthefireresistance ratingoftheseassemblies.

2.1.3FireDoorsNotLabeledDoorNo.111(elevation 670,ReactorBldg.Unit1)andDoorNo.201(elevation 683,ReactorBldg.Unit1)hadnolabels.ThesedoorswerecomparedwithDoorNo.110(elevation 670,ReactorBldg,Unit2)whichhadal-l/2hrlabelwiththefollowing results:2.Allthreehadthesamedimensions (height,widthandthickness) andthesameidentification tags(exceptfortheopeningnumber)rivetedtothelatchedgeofthedoor.Thespacingofinternalhorizontal stiffeners wasdetermined tobeapproximately 8to12in.oncenteronallthreedoors.Thiswasdonebymeansofastethoscope.

FACTORYMUTUALRESEARCHCORPORATION 3.Thesametypeofinsulation wasusedinthecoreofallthreedoors(glassfiberbatts).Thiswasestablished byremovingscrewsfromdoorhingesonalldoorsandextracting doorfillermaterial.

4.Thethickness ofthemetalfacesheetonalldoorswasthesame(0.045in.or18ga).Thiswasdetermined bymeasuring metalthickness bymeansofaspecially adaptedmicrometer.

DoorNo.115(elevation 670ofReactorBldg.Unit1)alsohadnolabel.Thisdoorwasapparently designedasabulletproofdoorwithhingesweldedinplace.Itcouldnotbeinternally examinedinthemannerdescribed above.Thedoorwasmanufactured bytheChicagoBulletProofDoorCompany.OtherdoorsmadebythesamecompanywerelocatedintheControlBuilding(Door462atelevation 729)andintheReactorBuilding(Door571atelevation 818).Boththeabovedoorshavel-l/2hrlabels.Allthreedoorshave1)thesamedimensions, 2)thesamehardware, 3)asolidcore.Basedonthewriter'experience auditingfiredoormanufacturing plantsitisbelievedthatDoorNo.115wouldalsohaveal-l/2hrfirerating.However,sincethedoorcouldnotbeinternally

examined, themanufacturer wouldhavetobecontacted andaskedtocomparetheconstruction ofthisdoorwiththe1-1/2hrfirerateddoorstoconfirmtheaboVe.Door587hadalooselyattachedlabel.Thisdoorwouldnormallybetreatedasifithadnolabel.Thedoorwasnotphysically examinedasabovebecauseitwaslocatedinashortcorridorwithalabeledfiredooroneitherside(Door586andastairwaydoor).2.2SPECIALPURPOSEDOORAnevaluation wasmadeofanunlabeled special-purpose (flood)doortodetermine whetheritwouldprovidea1-1/2hrfireresistance rating.Thedoorexaminedwasatelevation 645intheCoreSprayPumpRoomofUnit1~Thisareaisindicated asArea1-1Binthe"FireProtection ReviewReport".Thedoorwas3ftby7ftandconsisted of1/4in.platesteelwith1in.x2in.x3/16in.steelchannelforperipheral framingandhorirontal stiffening 10in.oncenter.Thedoorwaslatchedbytwelve1in.square,steelbarlatchesengagingthe5/8in.thicksteelframeonthetop,bottomandsides.Gasketing isemployedtomakeawaterproof sealwiththe5/8in.thicksteelframe.Steeldoorsofthistypehavenotbeentestedforfireresistance inthiscountry.Theconstruction ofthisdoorwascomparedtotheRulesoftheFireOfficesCommittee (FOC),Section1,Specification 1,fromGreatBritain,

1]1FACTORYMUTUALRESEARCHCORPORATION whichstatesthatdoorsfabricated inaccordance withthoserulesmaybeexpectedtoprovide6hrs'ireresistance whenthereisonedooroneachsideoftheopening.Thisisbasedonnumeroussuccessful firetestsofthesedoorsinthatconfiguration.

Firetestsonsingledoorsofthisdesign,conducted torequirements ofBritishStandard476,Part8,havesatisfied requirements ofthatstandardfor'hours.Thistestmethodisequivalent tothetestprocedure usedintheU.S.,ASTME-152,indetermining adoor'sfireresistance rating,withoneexception:

ahosestreamtestisnotrequiredinBS476.Thisexception isnotconsidered criticalforsteeldoorssincethehosestreamisappliedtothehingesideofthedoorwhichdrivesthedooragainsttheframestop.RulesoftheFOCrequiretwopointlatchesofnolessthan3/8in.diametersteelinsuchdoors.Thewaterproof doorinquestionhastwelve1in.squaresteellatchbarswhichengagetheframe;hence,thedesiredl-l/2hrfireresistant performance canreasonably beexpectedinafiresituation.

2.3ELECTRICAL EQUIPMENT CHASESAnevaluation wasmade.ofdoorstochasescontaining electrical equipment atelevation 771intheControlBuilding.

Thesedoorswerenumbered594,595,598,andoneunnumbered.

Thedoorsarefittedwithafusiblelink-1Iactuatedlouver(llin.xllin.)locatedinthetopthirdofthedoor.Thedoorsandlouversborel-l/2hrULlabels~FMdoesnotapprovelabeledfiredoorswithlouvers.However,ULtestsandlistslouversforinstallation inlabeledfiredoors.TheNationalFireProtection Association (NFPA)allowstheuseoflouversinlabeledfiredoorswheretheopeningisnotinanexitorlocatedwhereproductsofcombustion flowingthroughthelouveropeningpriortoitsoperation couldjeopardize theuseofexits.Thewallconstruction ofthecablechasesconsistsoftwo1in.thicklayersofTypeXgypsumwallboard onsteelstuds.Thewallboard isonthecorridorsideonlywithnosheathing providedonthechasesideofthestuds.Thisisnotatestedfireratedconstruction.

TomeetFMrecommendations louversshouldberelocated tothefaceofthecablechaseneartheceilingtoachievefastresponse.

Louveropeningsinthedoorshouldbeclosedwith16gagesheetmetalwithaminimum2in.overlaparoundtheopening.Thesheetmetalcoveringshouldbeattachedwithmachinescrews5in.oncenter.

FACTORYMUTUALRESEARCHCORPORATION Thecons'truction oftheelectrical equipment chaseissuchthatal-l/2hrfireresistance canbeexpectediffireexposureisonthecorridorside.However,ifthefireexposurecamefromwithinthechase,fireresistance ratingwouldbeminimal.Expansi'on oftheexposedsteelstudsduetoafireinsidewouldresultinmovementoffasteners holdingthegypsumwallboard in.placewithpossiblelossofstructural integrity ofthewall.

FACTORYMUTUALRESEARCHCORPORATION RECOMMENDATIONS Eightdoorassemblies inControlandReactorBuildings, requirethefollowing:

DoorNo.115(Elevation 670,ReactorBuilding, Unit1):Themanufacturer shouldbecontacted todetermine thefireratingofthisdoor.i'~DoorNo.559,Elevation 771,ControlBuilding:

Thelatchmechanism onthisfireexitdeviceneedsrepair.Latchingisnotreliableand-boltretraction iserratic.i3.DoorNo.586,Elevation 783,ControlBuilding:

Thisdoorwaspreparedforadeadboltwhichhasnotbeenprovided.

The1in.diameterholeinthefacesheetshouldbecoveredwith16gagesheetmetalfastenedwithmachinescrews.TomeetFMrecoamendations ventilation louversinthedoorstothefourchasescontaining electrical panelsandcablesatElevation 771,ControlBuilding(Doors.No.594,595,598,andoneunnumbered) should,berelocated tothefaceofthecablechaseneartheceilingtoachievefastresponse.

Louveropeningsinthedoorshouldbeclosed-~~~~~with16gagesheetmetalwithaminimum2in.overlaparoundtheopening.Thesheetmetalshouldbeattachedwithmachinescrews5in.oncenter.DoorNo.601,Elevation 779ReactorBuilding:

Oneboltattaching theframetothewallismissingandshouldbereplaced.

Also,thecloserattachment totheframeheaderislooseandshouldbetightened.

'leFACTORYMUTUALRESEARCHCORPORATION APPENDIXAFIREDOOROBSERVATIONS lof3BUILDINGDOOR"NO~ELEV-DOORATIONLABELEDMODIFICATIONS COMMENTSOlOcOC3CPmC44JC4~rf4l44JQ4lO,)Jy]CONTROLBLDG263317457462463465466468538542544553554555556557558559560561562563564567568698698729729729729729729754754754771771771771771771771771771771771771771771573580585586771783783783569771570771571771572771YesYesYesYesYesYesYesYesYesYesYesYesYesYesYesYesYesYesYesYesYesYesYesYesYesYesYesYesYesYesYesYesYesXXXXXXXXXXXXXXXXXXXXXXXXXXXSeeSectionIIISeeSectionIII h

FACTORYMUTUALRESEARCHCORPORATION

'llAPPENDIXAFIREDOOROBSERVATIONS 2of3BUILDINGDOORELEV-DOORNO~ATIONLABELEDMODIFICATIONS COMMENTSOmePeLlC~rlQCO0CljC7m0'00404JCJQD'."LCONTROLBLDG587783594771595771598771(SeeNote1)XYesYesYes730806Yes731806Yes7006754YesYesYesNoX115670No201683NoXREACTORBLDGUNIT170670109670111670XX(SeeNote2)XXXXXSeeSectionIIISeeSectionIIISeeSectionIII+lin'Microswitch onframe,(see Note3)~IiExtraheavydutyhingesAppearssameasDoorNo.110(elev.670ReactorBldg.Unit2)~AppearssameasDoorNo.462(elev.729ControlBldg.)andDoorNo.571(elev818ReactorIBldg.)AppearssameasDoorNo.110(elev.670ReactorBldg.Unit2)'I415.719419719421719425719517749519749523749525749571818601779627779803818806818807818YesX,.YesXYesXYesXYesXYesXYesXYesXYesYesXYesYesYesYesXXXXXXXXXSeeSectionIII10 0

FACTORYMUTUALRESEARCHCORPORATION APPENDIXAFIREDOOROBSERVATIONS 3of3BUILDINGDOORELEV-DOORNO.ATIONLABELEDMODIFICATIONS COMMENTSREACTORBLDGUNIT272110112113114116518ieNOTES:2~3~0eg44JC~r400>rr'0M0Cg'4gdol<g~4Jm<<0oeeO670670670779779670749YesYesYesYesYesYesYesXXXXXXXXXXAirlockswitchAirlockswitchNewcloserreinforcement onfaceofdoorThelabelonthisdoorhasminordamageandislooselyattached.

Thiscastsaquestioners toitslegitimacy.

Inthisinstance, thequestionismoot,asthislocationisinashortcorridorwithanacceptable firedooroneithersideofit,(DoorNo.586andastairwaydoor.)Thereisafourthdoorad~scenttothisdoorwithnoopeningidentification.

Thisisa3ftx3ft,l-l/2hrratedaccesspanel.

SUSQUEHANNA STEAMELECTRICSTATION-UNITS162PIREPROTECTION PROGRAM-CONCERN81DOCKETSNO.50-38750-388APPENDIXA-EXEMPTION REQUESTSEXEMPTION REQUESTNO.3ATTACHMENT 2

P'ICi'I FactoryIlutualResearchAugust16,19851151Boston-Providence TurnpikeP.O.Box9102Norwood,Massachusetts 02062Telephone (617)7624300Telex92.4415Mr.ThomasGormanNuclearPlantEngineering A-63Pennsylvania PowerandLightCompanyTwoNorthNinthStreetAllentown, PA18101

Subject:

FireDoorEvaluation

DearMr.Gorman:

The-following isthereportofSamKnight'svisitonMay7,1985toevaluatefireresistance offourdoorsandframesintheUnit1and2ReactorBuildings.

g~HPaulH.DobsonSeniorEngineerPHD/)malceoDoP.L.S.R.Kohn,PP&LH.Dobson,FMRCJ.Matern,FMEA-Phil.Knight,FMRCW.Newcomb,ABO-Waltham Q(