ML19305E804

LER 80-015/99X-0:on 800129,during Recovery from Planned Transient,Rcs Depressurized to Min of 1,350 Psia.Caused by Pressurizer Spray Valve 2CV-4651 & Steam Dump & Bypass Valve 2CV-0301 Not Fully Closing on Demand.Valves Modified

ML19305E804
Person / Time
Site:	Arkansas Nuclear
Issue date:	05/13/1980
From:	Shively C ARKANSAS POWER & LIGHT CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV)
Shared Package
ML19305E802	List: ML19305E801 ML19305E804
References
LER-80-015-99X, LER-80-15-99X, NUDOCS 8005200457
Download: ML19305E804 (1)

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EVENT OESCRIPTION AND PROBA8LE CONSEOUENCES h ITTTI IDurina the recovery from a olanned unit transient oer Power Escalation I

,- i 100 percent Turbine Trip Test, the RCS depressurized to a minimum of i o a 11350 osia (Saturation Margin = 570F1. ECCS Subsystem. Safety Iniection i e s Actuation. Signal (SIAS) activated at 1740 psia per design Engineering i tolstInvaluatinn datormined that nno (1) cycle of tho 16n allnwable safety I g l njection i nozzle thermal cycles was experienced during the transient. I i c i 1 IECCS actthtidn~. and iniectinn of water is renneted nor T.S.3.5.2.a nursuant" i T.S.6.gfa. cag ,gg, , , , _ , ,cg., gg ITTTI 11Lf.JO e W@ L,,zj@ l zI zi z i ziz I ..z!@ w@ Lzj

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