05000298/LER-1979-013-03, /03L-0 on 790508:correct Drywell to Suppression Chamber Reading Not Established.Caused by Leaking Inlet Purge Valve.Valve Repaired & Leak Tested

/03L-0 on 790508:correct Drywell to Suppression Chamber Reading Not Established.Caused by Leaking Inlet Purge Valve.Valve Repaired & Leak Tested

ML19224D808
Person / Time
Site:	Cooper
Issue date:	05/30/1979
From:	Mike Williams NEBRASKA PUBLIC POWER DISTRICT
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV)
Shared Package
ML19224D806	List: 05000298/LER-1979-013, Forwards LER 79-013/03L-0 05000298/LER-1979-013-03, /03L-0 on 790508:correct Drywell to Suppression Chamber Reading Not Established.Caused by Leaking Inlet Purge Valve.Valve Repaired & Leak Tested
References
LER-79-013-03L, LER-79-13-3L, NUDOCS 7907170065
Download: ML19224D808 (1)

LER-1979-013, /03L-0 on 790508:correct Drywell to Suppression Chamber Reading Not Established.Caused by Leaking Inlet Purge Valve.Valve Repaired & Leak Tested

Event date:
Report date:
2981979013R03 - NRC Website

text

N RC.F O'M 366 U. S. NUCLE AR REGULATORY COMMISSION (7-7 7 )

LICENSEE EVENT REPORT CONTROL BLOCK: l l

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2 l During reactor startup, drywell to suppression chamber SP of >1.47 psid was not l

established per Technical Specification 3.7.E.1.a within the 26-hour time period l

g after achieving operating pressure and temperature due to a leaking purge inlet j

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40 41 42 43 44 47 CAUSE DESCRIPTION AND CORRECTIVE ACT;ONS i

o l A leakins, inlet purze valve designated PC-236 AV prevented achieving the required l

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i drywell to suppressicn chamber aP of 11.47 psid within the required 26 hours3.009259e-4 days <br />0.00722 hours <br />4.298942e-5 weeks <br />9.893e-6 months <br />. The aP was achieved in 26 hours3.009259e-4 days <br />0.00722 hours <br />4.298942e-5 weeks <br />9.893e-6 months <br /> 52 minutes. Valve PC-236 AV has been repaired and leak tested. This occurrence has been diset.ssed with the persUnnel involved and a copy l

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