ML19323A007

LER 80-003/03L-0:on 800303,while Performing Surveillance tests,MO-3-10-25A LPCI on A,Loop Failed to Open & RHR Pump Would Not Start.Caused by Galled Walworth 24-inch Gate, Pressure Seal Bonnet.Valve Repaired & Leak Tested

ML19323A007
Person / Time
Site:	Peach Bottom
Issue date:	04/02/1980
From:	Cooney M PECO ENERGY CO., (FORMERLY PHILADELPHIA ELECTRIC
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
References
LER-80-003-03L, LER-80-3-3L, NUDOCS 8004070311
Download: ML19323A007 (1)

Text

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Mr. BoyCe H. Grier, Director No. 3-80-3/3L Office of Inspection & Enforcement, Region i U.S. Nuclear Regulatory Conynission 631 Park Avenuc King of Prussia, PA 19406

Dear Mr. Grier:

This L.E.R concerns the failure of the 25A LPCI injection valve to open during surveillance testing. Governing Tech. Spec. is f

3.5.A.5.

1 U.S. NUCLEAR REGULATORY COMREISalON

_ LICENSEE EVENT REPORT -

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4 6 Go occutT NuvuEM oATE 7b oATE EVENT DESCRIPTION AND PROBABLE CONSEOuENCES h , 'J

[n t ai l While performing surveillance tests with the unit at power, M0 3-10-25A I g.g l LFCI injectior valve failed to open so the 'A' loop was declared l i n 14 l l inoperable. Required Tech Spec testing on the 'B' loop and both core l n j ., g j spray systems proved operability. Subsequent testing on the 'A' loop l lo is i l revealed that, in addition to failure of the 25A valve to open, the 3A l o , l RER pump would not start. I L, o LJ, ,l

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CAUSE DESCRIPTION AND CORRECTIVE ACTIONS h Wl The Walworth 24" nate. eressure seal bonnet. Mark 10-M3 valve was called i FITl i between the valve dise Rnd valve nuide. valve was reenired n t ante nea i gl test was performed, and the valve stroked satisfactorily. RHR pump had l LL.l.2 I I min-alfened cell switch in breaker closinn cireiitt. cell switch was I Wl ad4usted. RHR oumo and 'A' loop retested satisfactorily. 2 l q ,

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NAME OF PREPARER PHONE: (215) 841-5020 *

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