ML17244A694

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Forwards Response to IE Bulletins 78-12 & 78-12A, Records Investigation Rept Re Off-Chemistry Welds in Matl Surveillance Specimens & Responses to Bulletin 78-12&78-12A Suppl. Concludes Crystal River 3 Isolated Event
ML17244A694
Person / Time
Site: Crystal River, Ginna  Constellation icon.png
Issue date: 03/13/1979
From: TAYLOR J H
BABCOCK & WILCOX CO.
To: REINMUTH W G
NRC OFFICE OF INSPECTION & ENFORCEMENT (IE)
Shared Package
ML17244A692 List:
References
NUDOCS 7907230493
Download: ML17244A694 (6)


Text

Babcock~V~ilco"I!PowerGeneration GroUpP.O.Box1260,Lynchbur8,Va.24505Telephone:

(804)384-5111~;)'b~%'l,~:.March13,1979Mr.PayneG.Re'inmu'th"

~.s.'-c,OfficeofInspection and'nforeementU.S;NuclearRegulatory Commission Nashington, D.C..2055$Subject-:

ResponsetoIEBulletinNos.,78-12and78-12A'ear NrReinmuthEnclosedforyourinformation arethree(3)copiesof'urreportentitled, "RecordsInvestigation ReportRelated'o Off-Chemistry Neldsini~faterial Surveillance Specimens and.Resppnses toBulletin78-12.and.78-12ASupplement",

whichwehavepreparedfor.ourcustomers inordertofacilitate their.responses tothebulletins.

Thereportisbasically dividedintothree(3)parts:(1)anintroduction and.summaryofthe..............

weld,wireissue;(2)'generalinformation tosupport.thecon-clusionswehavereached;and(3)specificresponses totheinformation requested bythebulletins.

Appendices containing copies.ofBINchemicalanalysisrequirements andweldfillerwirequalification testsareincludedassupporting information.

Theinformation intheappendices hasbeenselectedbasedonyourrequest.ataJanuary16,1979meetinginNt.Vernon,Indiana.Thisreport.describes theinvestigations thatveremadeasaresultofdiscovering anoff-chemistry condition inareactorvesselsurveillance specimenfortheCrystalRiver3(CR-3)Project.Thepurposeoftherecordsinvestigation wasto.determine thecauseandextentofthemixedweld.wireproblem..Theinvestigation alsoincludedareviewoftestresultsfrom.actualreactorvesselproduction weld.seamstotheextenttheseweldscouldbeinvestigated, andfromreactorvesselsurveillance materialtests.Theinvestigation coveredtheperiodfrom1966throughNovember1978.'naccordance withIEBulletin78-12A,ourresponseisgivenonagenericbasisandaoattemptwasmadetocorrelate specificweldments withheatsoffillerwire.~.I~5~QOVp3pgag~~~'Bah:ock ZWilcoxCompany/Estabhshed 1867

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~.r*Ir%QWHr.NayneG.ReinmuthMarch13,1979:0PTherecordsinvestigation,.provides considerable supportforthehypothesis that-the.presenceofatypicalchemistry condition intheCrystalRiver3surveillance'lock isanisolatedevent.involving asmall'amount.of.materialinoneheatofwire.~".Thegeneral:conclusion reached'as aresult'of theinvesti-gationoftheatypicalweldwirediscovery isthatitisvery~unlikelythatothersimil'arconditions:exist inanyreactorpressurevesselwelds.Furthermore, theshoppractices whichhaveevolvedovertheyearsandwhicharecurrently ineffectvirtually eliminate thepossibility thatavesselfabricated todaymight.containoff-chemistry weldmaterials.

ESIyouhaveanyquestions concerning theenclosedmaterial, please.contactme(Ext.2817)orNilliamR.Speight(Ext.2902)oSmystaff-.I~~Verytruly.yoursJamesH.,Taylor1183Jlg'nclosures:

As.stated.ManagerLaceIIJET/ZN:cc:.R.,B;,Borsum-B4NRep.BethesdaOffice.~~;lI'~rI~~~~ri~i~rI~'Cwi,

'Babcock:.wilcox PowerGeneration Group,P.O.Box1260,t.ynohburg, Va.24505Telephone:

(804)384-5111March'3,1979.(r1(westinghouse NuclearEner'gySystemsMonroeville NuclearCenter,NorthernPike.Road...';.:-.:*Yanroevil le,PennsylvanTa15146Attn:Hr.G..M.LarrbSub':ResponsetoNRCIEBulletinNo.78-.12&12A:.Gentlemen!

E'nclosed foryourinformation arethree(3)copiesofareportentitled, "RecordsInvestigation ReportRelatedtoOff-Chemistry MeldsinMaterialSurveillance Specimens andResponsetoNuclearRegulatory Corrmission IEBulletinNo.78-12&Supplement No.78-12A.."

8&MContractNo.-MestinhousePurchaseOrderNo.610-0110Ro~><(craiba54-F"49758" SP610-0115-'pawr8~<~I54-g-55180-BP 610-0116f1)~~p.,~.54-g-61741-BP 6100116t2~""PaŽ~54g61742BP610-0144-

..54-g-70140-BP

'10-0152'4-g-70141-SP 640-0001546-CVJ-150100-SP 640-0002546-CVD-150101-BP 640-0004546-CYJ-161057 640-0005546-CYQ-161058 640-0012,546-CYJ-195410-BP.640-0014546-CY0-195411-B P640-0016, 546-CY0-195412-BP 40-00617546CYJ161Q62BNplanstosubmitthereporttoNRCbyMarch23,1979.Theinformation, presented inthisreportre'presents anintensive recordsinvestigation whichincludesthefollowing reactorpressurevesselsandclosureheadsmanufactured specifically forMestinghouse.

4(JHT:dsfEnclosures (3').';-.'.;:."cc:K.B.Stuckey-"fRt:Vernon

~I(wgEncl.)

,4r('(%~(I-Verytruly'yours,

~yZ>,.~~r'P,r.+~~~JamesH..Tay1orPanager,.Licensing'(~~The83bcock8(%'itoog Con'.r.;.nv It'.(;tnhttrn(

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