ML18030A120

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Notifies of Potential Deficiencies Er 100450 & Er 100508 Re States Co Sliding Links.Failure Occurs in Form of Crack Between Threaded Screwhole & Side of U-shaped Link.Will Advise of Date of Final Rept
ML18030A120
Person / Time
Site: Susquehanna  Talen Energy icon.png
Issue date: 06/23/1980
From: CURTIS N W
PENNSYLVANIA POWER & LIGHT CO.
To:
References
ER-100450, ER-100508, PLA-499, NUDOCS 8006270342
Download: ML18030A120 (4)


Text

REGULATORY INFORMATION DISTRIBUTION SYSTEM(RIDS)ACCESSION NBR:8006270342 OOC,DATE:

80/06/23NOl'ARIZEO:

NOFACIL:usauehanna SteamElectricStationiUnit1rPennsylva

-38'ouehanna SteamElectricStationPUnit2IPennsylva A'~AUTHORAFFILIATIO'TlCSPN.i'I~Pennsylvania PowerilLightCo~RECIP.~A:.ERFCIPIFNTAFFILIA7IONDOCKET¹0500038705000388

SUBJECT:

NotifiesofPotential Oeficiencies ER100450FER100508reStatesCoslidinglinks.Failureoccursinformofcrackbetweenthrcededscrewhole LsideofUshaoed1ink,&i11adviseofdateoffinalrept'ISTRISUT TUNCOOS:8019SCOPIESRECEIVES:LTR gENCLQSIZESJBTIl'LF:ConstructionDeficiency Reoort(10CFR50~55E)BOOTES:~gWM~3Q~)re~+~~

RECIPIENT IODOE/i"JAETREACTION:ADI()Q~Ar~+2120rIuTlR~.'AL:

AC/RCI/IEEOORSTAFF07FIELOCOOR/IE13 HYD/GEOBR22-LICQUALBR<PA08VELD23PRCTSl'EVBRG01COPIESLTTRFNCLRECIPIE'TiTIOCODE/'TiA'4EBCpvry+~odd15PHAEODEQUIPQUALBR16HANAUERPS

~IRE05MOOREEV~NRCPDR02,ORASSESSBR17QABR10STANORDSOEV11COPIESLTTREN11EXTERNAL'CRS NSIC24041611LPOR03due3p>F800TOTALNUi!BEROFCOPIESREQUIRED:

LTTR41ENCL1 0TWONORTHNINTHSTREET,ALLENTOWN, PA.18101PHONE:(215)821-5151NORMANW.CURTISVicePresident Engineering 8Construction 821-5381June23,1980Mr.BoyceH.GrierDirector, RegionIU.S.NuclearRegulatory Commission 631ParkAvenueKingofPrussia,Pennsylvania 19406SUSQUEHANNA STEAMELECTRICSTATIONNOTIFICATION OFAPOTENTIAL DEFICIENCY ONSTATESCOMPANYSLIDINGLINKSERs100450/100508 FILE840-4PLA-499

DearMr.Grier:

Thisletterservestoconfirminformation providedbytelephone toNRCInspector Mr.R.McGaughybyMr.A.R.SabolofPP&LonJune17,1980.Duringthatconversation, Mr.McGaughywasadvisedthatthesubjectcondition wasbeingevaluated forreportability undertheprovisions of10CFR50.55(e).

ThedefectinvolvesthefailureoftheU-shapedlinkontheStatesCompanyslidinglinkterminalblock.Thefailureoccursintheformofacrackbetweenthethreadedscrewhole andthesideoftheU-shapedlink.TheU-shapedlinkandassociated spacerformsaconnection betweentwoslottedbarsontheterminalblockwhenthespacerandlinkaretightened byascrew.Whenthescrewistightened acrackmayresultwhichcancauseanopenorapoorelectrical connection.

Sincetheselinksareusedonsafetyrelatedequipment, thedefective condition hasbeenevaluated aspotentially reportable undertheprovisions of10CFR50.55(e).

Thesubjectdefecthasalsobeenpreviously recogniedbytheNRCandwasdescribed inyourInformation Notice80-08issuedonMarch7,1980.Bechtelhasunderdevelopment asamplingprocedure whichincludesguidancefortheirQualityControlfieldorganization toinspectthelinks.ThePP&LIntegrated StartupGroupwillalsobeinstructed tofollowtheguidanceoutlinedinthesamplingplanwhenevertheyoperatethelinksduringpreoperational testingactivities.

Weexpectthisapproachtoprovideuswithquantitative information ontheextentofthedeficiency.

8OO6S7o>~Sincethedetailsofthisreportprovideinformation relevanttothereporting requirements of10CFR21,thiscorrespondence isconsidered toalsodischarge anyformalresponsibility PP&Lmayhaveforreporting incompliance thereto.go/15PENNSYLVANIA POWER4LIGHTCOMPANY//g Mr.BoyceH.GrierJune23,1980PP&LandBechtelarecontinuing toanalyzetheproblemandtoestablish anacceptable corrective actionplan.Baseduponthesatisfactory completion ofourinvestigation, wewilladvisetheCommission ofthedatebywhichafinalreportwillbesubmitted shouldtheconditions bedetermined tobereportable.

N.W.CurtisVicePresident-Engineering 6Construction-Nuclear FLW:mcbcc:Mr.VictorStello(15)DirectorWffice ofInspection 6Enforcement U.S.NuclearRegulatory Commission Washington, D.C.20555Mr.G.McDonald, DirectorOfficeofManagement Information 6ProgramControlU.S.NuclearRegulatory Commission Washington, D.C.20555Mr.RobertM.GalloU.S.NuclearRegulatory Commission P.0.Box52Shickshinny, Pennsyl'vania 18655