ML19211A262

LER 79-087/03L-0:on 791114,during Mode 5 Operation,Leakage Discovered in Socket Weld on Low Pressure Safety Injection Flow Orifice Valve.Caused by Mechanical Fatigue Failure at Weld.Injection Sys Out of Svc 3-h During Repair

ML19211A262
Person / Time
Site:	Arkansas Nuclear
Issue date:	12/06/1979
From:	Pendergraft R ARKANSAS POWER & LIGHT CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV)
Shared Package
ML19211A258	List: ML19211A257 ML19211A262 ML19211A264
References
LER-79-087-03L, LER-79-87-3L, NUDOCS 7912170279
Download: ML19211A262 (1)

Text

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le 75 MetoHvoaTE EVENT DESCRIPTION AND PROBA8LE CONSEQUENCES Oso o a i During Mode 5 operation, a leak was discovered in a socket weld on the 1

-m i LPSI Flow Orifice Valve (2SI-5091B). The leak was discovered by opera- i o . i tions during a routine inspection tour. The amount of leakage was in- l c,s i significant. This event similar to LER 50-368/79-21 (same system). i e . Reportable per T.S' 6.9.1.9d. . I f3Til i I

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, , i Valve was replaced and socket weld on valve was dye penetrant :hecked.

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