ML19257A343

RO 79-157/01T-0:during Review of Seismic Analyses Per IE Bulletin 79-14,nonconformance in Pipe Support Design Was Discovered by S&W.Caused by Incorrect Valve Weights Used in Support Calculations

ML19257A343
Person / Time
Site:	North Anna
Issue date:	12/12/1979
From:	VIRGINIA POWER (VIRGINIA ELECTRIC & POWER CO.)
To:
Shared Package
ML19257A338	List: ML19257A337 ML19257A343 ML19257A345
References
IEB-79-14, NUDOCS 8001030786
Download: ML19257A343 (1)

Text

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Vi*britoElectric and Ebecer CcmYp'I i

N6 Anno _ Fbtaer Station u.n NPF-4.

bcct<et Mo.

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24 Hour Reporba.ble EQen c Wr% ten Folloca-LLp Event: Non-ConGormance in Piae Su.pport besgn LER/RO YH5'7/o" t -O buring reiteO 09 seisrrGc ono.gses 9er as-bu' so9eth Yel keCl P P ncg. sgstems (IEB '19-14)

Ii Stone L WeEster discoverecY the pipe stress on iine 1 y2-RC-105-1502-Gd to be CVer Code

~

1 Loma.oie cue to incorrect va We coetghts u.se in pipe support cohet.dations.

The 3robhern is presenMg u.nder rev'teo b g ncyneering.

There has 'oeen no emet on the piant o.s o.

-esult c6 this discrepancg.

're-evcducked c.nd o The pipe support col L bes clck*cnal_ snubber oitlh be jnstcdied on the hinc 3here ryred.

The urnt is present\\

eGu.elig shuidc<cq. g 'in Mode 5 9enotchg o.

1671 298 8001030

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