05000334/LER-1980-007-01, 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

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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:
References
LER-80-007-01T, LER-80-7-1T, NUDOCS 8003110636
Download: ML19344D288 (2)
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LER-1980-007, 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
Event date:
Report date:
3341980007R01 - NRC Website
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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 10tallout into service. After a check was m.de to verifv correct flow through the j

i n 1,1 ISupplementary Leak Collection System, refueling was recommenced.

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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

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CAUSE

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42 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

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