ML18030A112

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Interim Deficiency Rept Re Pipe Supports to Containment Liner Plate.Installation of Supports W/O Having Civil Design Group Review Structural Adequacy Resulted in Overstressing Liner Plate
ML18030A112
Person / Time
Site: Susquehanna  Talen Energy icon.png
Issue date: 05/29/1980
From: CURTIS N W
PENNSYLVANIA POWER & LIGHT CO.
To:
References
840-4-900-10, NUDOCS 8006090311
Download: ML18030A112 (3)


Text

REGULATORY INFORMATION DISTRIBUTION SYSTFM(RIOS)pauliACCESSION NBR:8006090311 DOCSDATE:80/05/29NOTARIZFD:

NODOCKET¹FACIL:SO3usquehanna SteamElectricStationiUnitiiPennsylva 0500038738squenanna SteamElectricStationiUnit2iPennsylva 05000388AU)~AUTHORAFFILIATION CUNTISgN~5~Pennsylvania Power8LightCo~RECIP,NAMERECIPIENT AFFILIATION

SUBJECT:

Interimdeficiency reptrepipesupportstocontainment line~plate~Installation ofsupportsw/ohavingcivildesigngroupreviewstructural adequacyresultedinoverstressing linerplate~DISTRIBUTION CODE:8019SCOPIESRECEIVED:LTR QENCL+SIZE:TITLE.:Construction Deficiency Report(10CFR50~55E)NOTES:S~il/~RECIPIENTCOPIESIDCODE/NAME LTTRENCLACTION:14P<<WuV'E'<

20LAL.4cJgINTERNAL; 1REGFIL08MPA10QAB13FIELDCOOR/IE17AOPLANTSYS22DIRDPMAO/RCI/IE AEODGEOSCIENCESBRI8CSYSBRMECHENGBRSTRUCTENGBRRECIPIENT IO-CODK/NAME 15BCLcm~4821AOQ~g02NRCPOR07EDO8STAFF09OEPYDIRDPM11STANORDSOKV16AOFORENGR17AD/CORESCON>T 23GELDAD/SITETECHDIRECTOROSEHANAUKRiS

~MATLENGBRPOHERSYS8RCOPIESLTTRENCLEXTERNAL:

03LPOR24ACRS116104NSICJUyg019800TOTALNUMBEROFCOPIESREQUIREDLTTR48ENCL TWONORTHNINTHSTREET.ALLENTOWN, PA.I8'IOI'HONE:(2IS)821-SISINORMANW.CURTISVicePresideni-Engineering

&Ccnstructen 82I-5381May29,1980Mr.BoyceH.GrierDirector, RegionIU.S.NuclearRegulatory Commission 631ParkAvenueKingofPrussia,Pennsylvania 19406SUSQUEHANNA STEAMELECTRICSTATZONINTERIMREPORTOFADEFICIENCY ONPIPESUPPORTSWELDEDTOTHECONTAINMENT LINERPLATEERs100450/100508 FILE840-4/900-10 PLA-489DearMr.GriersThisletterservestoconfirminformation providedbytelephone toNRCInspector Mr.R.McGaughybyMr.A.R.SabolofPPaLonApril16,1980.Duringthatconversation, Mr.McGaughywasadvisedthatthesubjectcondition wasunderevaluation forreportability undertheprovisions of10CFR50.55(e).

Thedeficiency resultsfromtheinstallation ofsmallpipesupportsontheUnit1containment linerplateanddiaphragm slablinerplatewithouthaving,hadthecivildesigngroupreviewthestructural adequacyofthelinerplatetosupportthehangerloads.Sincethelinerwasdesignedonlytoprovidealeaktightbarrier,preliminary evaluation indicates thattheinstallation oftheseaddedsupportshasresultedinlocaloverstressing ofthelinerplate.Hadthisdeficiency remaineduncorrected itcouldhaveaffectedadversely thesafeoperation oftheplant,anditistherefore deemedreportable under10CFR50.55(e).

Thiscondition hasbeendocumented byBechtelonMCAR1-50,datedApril14r1980.Acorrective actionplanisbeingformulated toprovideforthereviewandmodification ofanyexistinghangerstoprecludeoverloading thelinerplateandfortheestablishment ofcriteriatobeusedinthefutureforthedesignofsimilarsmallpipehangers.Sincethedetailsofthisreportprovideinformation relevanttothereporting requirements of10CFR21,thiscorrespondence isconsidered toalsodischarge anyformalresponsibility PPGLmayhaveforreporting incompliance thereto.gerOPENNSYLVANIA POWER8LIGHTCOMPANY8006000+/I Mr.BoyceH.GrierMay29,1980Weexpecttoissueafinalreportonthecondition inJanuary>1981.Verytrulyyours,N.W.CurtisVicePresident-Engineering

&Construction FLW:mcbcc:Mr.VictorStello(15)Director&ffice ofInspection 6Enforcement U.S.NuclearRegulatory Commission Washington, D.C.20555Mr.G.McDonald, DirectorOfficeofManagement Information aProgramControlU.S.NuclearRegulatory Commission Washington, D.C.20555Mr.RobertM.GalloU.S.NuclearRegulatory Commission P.O.Box52Shickshinnyr Pennsylvania