ML17262A481

Provides Clarification of Heatup/Cooldown Curves Re Ltop Setpoint Mods

ML17262A481
Person / Time
Site:	Ginna
Issue date:	05/14/1991
From:	MECREDY R C ROCHESTER GAS & ELECTRIC CORP.
To:	JOHNSON A R NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM), Office of Nuclear Reactor Regulation
References
NUDOCS 9105210244
Download: ML17262A481 (3)

Text

ACCELERATED DISTRIBUTION DEMONSTRATION SYSTEM~"0REGULATORY INFORMATION DISTRIBUTION SYSTEM(RIDS)ACCESSION NBR:9105210244 DOC.DATE:91/05/14NOTARIZED:

NOFACIL:50-244 RobertEmmetGinnaNuclearPlant,Unit1,Rochester GAUTH.NAMEAUTHORAFFILIATION MECREDY,R.C.

Rochester Gas6ElectricCorp.RECIP.NAME RECIPIENT AFFILIATION JOHNSON,A.R.

ProjectDirectorate I-3

SUBJECT:

InformsofLTOPSetpointModification remodifyheat/cooldown curves.DISTRIBUTION CODE:A053DCOPIESRECEIVED:LTR 2ENCL8SIZE:TITLE:ORSubmittal:*

UpdatedFSAR(50.71)andAmendments NOTES:License Expdateinaccordance with10CFR2,2.109(9/19/72).

DOCKETg0500024405000244RDRECIPIENT IDCODE/NAME PD1-3LAJOHNSON,A INTERNAL:

AEOD/DOA/~

~WF01EXTERNALIHSNSICCOPIESLTTRENCLRECIPIENT IDCODE/NAME PD1-3PDNRR/DST8E2RGNlNRCPDRSAICLINERERCOPIESLTTRENCLDDDNOTETOALL"RIDS"RECIPIENTS:

DDPLEASEHELPUSTOREDUCEWASTE!CONTACTTHEDOCUMENTCONTROLDESK,ROOMP1-37(EXT.20079)TOELIMINATE YOURNAMEFROMDISTRIBUTION LISISFORDOCUMENTS YOUDON'TNEED!TOTALNUMBEROFCOPIESREQUIRED:

LTTR11)ENCL psw)fZZZZZIIIIIII'i<<IIIIZZuiZZROCHESTER GASANDELECTRICCORPORATION stsltd~OelJa8P'89EASTAVENUE,ROCHESTER N.K14649-0001 ROBERTCMECREDYVicePrerldent ClnnaNudearProduction May14,1991TELEPHONE AREACOBE71B5462700U.S.NuclearRegulatory Commission DocumentControlDesk'ttn:

AllenR.JohnsonProjectDirectorate I-3Washington, D.C.20555

Subject:

Heatup/Cooldown CurvesandAssociated LTOPSetpointModification R.E.GinnaNuclearPowerPlantDocketNo.50-244

DearMr.Johnson:

DuringtheNRCreviewofRGGE'sFebruary15,1991proposedlicenseamendment tomodifyheatup/cooldown curvesandtheassociated LTOPsetpointtomeetRegulatory Guide1.99,Revision2methodology, aquestionwasraisedconcerning reactorvesselweldmaterialidentification.

InTable5.3-5oftheGinnaStationUFSAR,weldcontrolnumberSA-847isidentified.

ashavinganickelcontent:of0.39weightpercent,and.acoppercontentof0.20weightpercent-.

Thesevaluesarenominalweldmaterialvalues.Forlicensing-

purposes, thechemicalcomposition usedis.a.moreconservative 0.54weightpercentnickel,and0.25weightpercentcopper.Theselattervalueswillbereflected inthenextUFSARupdate,December.

1991.ItshouldbenotedthattheweldcontrolnumberSA-847isidentified asSeamWR-19insomeRG&EandWestinghouse documents.

Thesetwodesignations identifythesameweld.Verytrulyyours,I<NialIHOQ'OOQO~-4$,0AOctOIN'AwetNlO'KwQ(hQQRobertC.MecredyGJW/165xc:Mr.AllenR.Johnson(MailStop14D1)ProjectDirectorate I-3Washington, D.C.20555U.S.NuclearRegulatory Commission RegionIKingofPrussia,PA19406/arrlfrrn+7~z,pinnaSeniorResidentInspector

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