ML19260D969

LER 80-015/03L-0:on 800116,during Reactor Physics Testing Following Refueling Outage,Reactor Was Critical W/Rcs Tavg Under 541 F.Caused by Cooldown While Attempting to Maintain RCS Temp During Testing.Heat Release Valve Closed

ML19260D969
Person / Time
Site:	North Anna
Issue date:	02/11/1980
From:	VIRGINIA POWER (VIRGINIA ELECTRIC & POWER CO.)
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
Shared Package
ML19260D965	List: ML19260D964 ML19260D969
References
LER-80-015-03L, LER-80-15-3L, NUDOCS 8002120681
Download: ML19260D969 (1)

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LICENSEE EVENT REPORT CONTROL 8LCCK; l I I l l l l (PLEASE PRINT OR TYPE ALL RECUlRED INFORMATIOND i

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--- oi3 istatement. The. health and safety of the general public were affected.

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i 3 lThe cause of the reactor being critical with an RCS TAVC less than 541*? was a cooldownl

1 4i ;lwhile attempting to maintain RCS temperature during reactor ohvsics testine. Correc tM

,.  ; action was to close the decay heat release valve and the main steam trip valve byeasses!

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