05000293/LER-1980-067-01, /01T-0:on 801002,analytical Reanalysis of B RHR Sys Indicated That as-built Configurations of Sys Would Not Remain Functional During Sse.Caused by Design Error.Seismic Anchor Modified to Meet Criteria

/01T-0:on 801002,analytical Reanalysis of B RHR Sys Indicated That as-built Configurations of Sys Would Not Remain Functional During Sse.Caused by Design Error.Seismic Anchor Modified to Meet Criteria

ML19340B275
Person / Time
Site:	Pilgrim
Issue date:	10/10/1980
From:	Graham E BOSTON EDISON CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
Shared Package
ML19340B268	List: 05000293/LER-1980-067, Forwards LER 80-067/01T-0 05000293/LER-1980-067-01, /01T-0:on 801002,analytical Reanalysis of B RHR Sys Indicated That as-built Configurations of Sys Would Not Remain Functional During Sse.Caused by Design Error.Seismic Anchor Modified to Meet Criteria
References
LER-80-067-01T, LER-80-67-1T, NUDOCS 8010210724
Download: ML19340B275 (1)

LER-1980-067, /01T-0:on 801002,analytical Reanalysis of B RHR Sys Indicated That as-built Configurations of Sys Would Not Remain Functional During Sse.Caused by Design Error.Seismic Anchor Modified to Meet Criteria

Event date:
Report date:
2931980067R01 - NRC Website

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8 60 61 DOCKET NUMBER 68 69 EVENT DATE 74 75 REPORT DATE do EVENT DESCRIPTION AND PROBABLE CONSEQUENCES h [612 l l On October 2, 1980 Boston Edison Co. Engineering Dept. notified Pilgrim Station l

lo la l l that an an '.ytical re-analysis of "B" RHR System inc'Acated that the as built con-l

o ;4 l l figurations of.the "B". RHR System would not remain functional during a Safe Shut-l 10151 I down Earthquake. The Station was in a cold shutdown condition at this time.

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33 34 35 36 37 40 41 42 43 44 47 CAUSE DESCRIPTION AND CORRECTIVE ACTICNS h ji loI l This event resulted from a desien error. The unit was maintained in a shutdowti l

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