ML19341A254

LER 80-043/03L-0:on 801220,reactor Core Isolation Cooling Valve 15 Had Seat Leakage of 1.531 Lbm/Hr,Exceeding Tech Specs.No Cause Noted.Valve Seating Surfaces Lapped & Valve Retested

ML19341A254
Person / Time
Site:	Vermont Yankee File:NorthStar Vermont Yankee icon.png
Issue date:	01/16/1981
From:	Murphy W VERMONT YANKEE NUCLEAR POWER CORP.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
Shared Package
ML19341A253	List: ML19341A252 ML19341A254
References
LER-80-043-03L, LER-80-43-3L, NUDOCS 8101220462
Download: ML19341A254 (1)

Text

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.NRC FORM 364 . U.S. NUCLEAR REGULATO2Y COMMISSION ]

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CON'T 10l'I 7 8 so RcE I60 L hl Of Sl 0l 61 0l Ol 217 l1 l@l112 OOcKET NUMSER 68 69 l 210 l 810 l@l 0lREPORT tvENT oATg 74 75 1l IloATE 6l 8l1]@ do EVENT DESCRIPTION ANO PROBABLE CONSEQUENCES h l o 12 l l While performing the Type C Leak Rate Testing, RCIC -15 was found to have seat i 1 o 131 11eakane of 1.531 lbm/hr which is in excess of Tech. Spec. Sec. 4.7. A.4. Since a i lotalIsecond valve in the line provided containment isolation, there were no adverse l l o t s i i consequences to the health and safety of the public. There has been no similar l lo l6 l loccurence reported to the Commission on this valve. I lol71l J 10141 1 7 se b SoEs" ##is' co stsci$E coupessNT ccos suscIoe sU$s 10191 l C l E l @ l E l@ (_b_j @ l V l A l L l V l E l Xl@ l E l@ l Dl @

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li1011 The valve seating surfaces were lanned and the valve was satisfactorily retested I t i li j l prior to plant startup per Tech. Spec. Sec. 3.7.A.4. The valve failure will I iii2i I also be reported in accordhnee with Apoendix J, 10 CFR 50, V.B.3. I Ii13l l l liIAI l l 7 s e so

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