ML19344D288

Er 80-007/01T-0:on 800121,during Reload After Defueling, Main Filter Banks Found Not in Svc.Caused by Procedural Inadequacy Because None of Refueling Checklists Indicated Tech Spec Change That Required Flow

ML19344D288
Person / Time
Site:	Beaver Valley
Issue date:	03/04/1980
From:	Werling J DUQUESNE LIGHT CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
Shared Package
ML19344D281	List: ML19344D280 ML19344D283 ML19344D285 ML19344D288 ML19344D290 ML19344D294 ML19344D296 ML19344D302
References
LER-80-007-01T, LER-80-7-1T, NUDOCS 8003110636
Download: ML19344D288 (2)

Text

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.NRC FOnM 363 U. S. NUCLt AH HLGULATOnY Coa.tMISSION am -

LICENSEE EVENT HEPORT f) CONTnOL HLCCC l 1 l ll l h (PLE ASE PRINT OA TYPE ALL HECUtnED INFORMATIONS 10 lie J, I P Iuw.m A l 3e l'* a 13 l 1 lCl

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5Ec l .aL @l 01510::u .. . ..> Es t :Au e4 a waar o Au EVENr DESCntPTION AND PRC9 AGLt CCNSE%f NCES h lo i;l lDurinn reload af ter defueline, it was found that the main filter banks were not in l lc,ji;] service. At C945 hours, refueling was stopped and the filter banks were immediately l j

10tallout into service. After a check was m.de to verifv correct flow through the i n 1,1 ISupplementary Leak Collection System, refueling was recommenced. There were no l 10 ! i I ! safety imnlications because all radiation monitors were operable that automatically l l 0 l 7 l ltransfer the Supplementary Leak Collection Exhaust flow through the main filter bank l 10631lhad any radiation problems occurred. The safety analysis (continued ou attached) l IlJ 7 4 3 SY STEM CAUSE CALSE COY' valvf CCOE CODE SUSCOCE CQvPONENT CODE SL8 CODE SUSCOCE F0191 7 8 9 I s ic l@ In l@ I z i@ Iz iz l z i z l z i z l@ I z i@ Izuz!@

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43 44 47 CAUSE DESCRIPTION AND CORRECrlVE ACTIONS h li j a l lThe cause of the incident was procedural inadequr.cy because none of the refueling  ;

It ii i Ichecklists indicated the new technical specification chance that required flow. The1 it i l llineup had been correct durins: the defueline operations but was altered during a 1 l i ( 31 l pause in the refue1.ine for inservice testine of the reactor coolant system nozzles. I ii #2 :

IThis technical specification has been noted in OST 1.49.3 l 60 7 8 9 F ACILtTv VETWOO OF STATLS *. PCwE R OTHER STATUS DISCO % E R Y DISCOVERY DESCRIPTION 3.

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• Beaver Valley Power Station . .

Duquesne Light Company.  ; . .

Docket No. 50-334 1 Event Description And Probable Conseqiiences (continued)'

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