ML17319A963

Proposed Tech Specs for Facility Re RCS Vents

ML17319A963
Person / Time
Site:	Cook
Issue date:	07/15/1981
From:	INDIANA MICHIGAN POWER CO. (FORMERLY INDIANA & MICHIG
To:
Shared Package
ML17319A959	List: ML17319A958 ML17319A960 ML17319A961 ML17319A962 ML17319A963 ML17331A772
References
NUDOCS 8107210427
Download: ML17319A963 (8)

Text

RE'.ACTOR COOLANTSYSTEMREACTORCOOLANTSYSTEMVENTSpny6/~7.LIMITINGCONDITION FOROPER"iTION3.4.5.2Tworedundant ReactorCoolantSystemVent(RCSV)pathsshallbeOPERABLE.

APPLICABILITY:

Modes1,2and3.ACTION:a.WithonlyoneRCSVpathOPERABLE, STARTUPand/orPOWEROPERATION maycontinueprovidedtheinoperable pathismairtained closedwithpowerremovedfromthevalveactuators; otherwise beinHOTSTANDBYwithin6hoursandHOTSHUTDOWNwithinthefollowing 6hours.b.WithnoRCSVpathOPERABLEwithin24hourseitherrestoreatleastonepathtoOPERABLEstatusorbeinHOTSHUTDOWN.

SURVEILLANCE REQUIREMENTS 4.4.5.2EachRCSVI)4thshallbedemonstrated OPERABLEfollowing eachrefueling by:a.'erifying thattheupstreammanualisolation valveislockedintheopenedpositin.b.Operating eachremotelycontrolled valvethroughonecyclefromthecontrolroom.c.Verifying flowthroughtheRCSVpathsduringsystemventing.Bi,072i0427 Bi0715PDRADOCK050003i5PPDR 3'2REACTORCOOLANTSYSTENVENTSThefunctionoftheReactorCoolantSystemVents{RCSV)istoremovenon-condens:-;-blesorsteamfromthereactorvesselheadand/orpressurizer

.Thissystemisde=ignedtomitigateapossibleconditionofinadequatecorecooling;inade-quatenacira1circulation,orinabi1itytodepressurizetoResidua1HeatRe:;ova1Systeminitiationcondikionsresulting fromtheaccumulation ofnon-condensabegasesintheReactorCoo1antSystem.Thereactorvesselheadventandthepressurizer ventareeachdesignedwithredundantsafety:,radeventpaths.HavingeithersystemOPERABLEorhavingonepathineach-systemfromoppositetrainsOPERABLEissufficienttomeettheprovisionsofSpecification3.4.5.2.

P(~u~cDONALOC.COOKNUCLEARPLANTUttlTt/OS.1AND2 NOTE:removeorreducethevolumeofhydrogenfromthecontainment priortore-opening thepressurizer vent.12.Returntotheappropriate operating instruction following thesuccessful completion oftheventing'.of thepressurizer vaporspace.Harch,1981Revision0PageS

~gAPPENDIX,A PRESSURIZER VENTGUIDELINE VENTINGTIMEPERIOD1.Convertthecontainment free-volume tocontainment volumeatstandardtemperature andpressureconditions.

CtPr~<92'Ri-i.ii-tiip)=(ii~ii')i(-'%Pppf'

"'")i(e,-

",ri..)FT*Temperature indegreesRankine('F+460)~Ifcontainment pressurehasincreased'above 14.7psiathenuse14.7psigaspressureforconservatism.

2.Determine thecontainment hydrogenconcentration invo1umepercentunits..iNOTE:The.containment hydrogenconcentration willbeinsigificant iftherehasbeennoleakagefrom'.the RCStothecontainment..

3.Calculate the.maximumhydrogenvolume~natcanbeventedtothecontainment whichwillresultinacontainment.

hydrogenconcentration

'flessthanorequalto3volumepercent.(3.0~-Cont.

H~Concentration XCont.VolumeISTPMaximumH2Volume=tobeVented't4.FromCurve'0l(RCSPressurevsH2FlowRate)determine theallowable venting'period whichwilllimitthecontainment hydrogenconcentration

'ta3volumepercent..

YiiltiiiMax.HoVented(FromStep3)ZFlowRateMins."March,1931,Revision0Page6

~~

~~~g~~~'CURVE91'PPENDIX

.A200015003CS'~ressure (PSI)10005001000..200030004000~'-'HYDROGENFLOWRATE(SCm)me'i$~5000 ATTACHMENT 4TOAEP:NRC:0584