05000293/LER-1980-069-01, /01T-0:on 801007,reactor Vessel Valve Rv 203-3A Opened.Caused by High Nitrogen Pressure Resulting in Leakage Past Seat of Valve 3-way,solenoid Control Valve Into Diaphragm of Relief Valve.Nitrogen Pressure Reduced

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• 05000293/LER-1980-069-01, /01X-0:on 801007,w/unit at 96% Steady State Power, Reactor Vessel 203-3A Safety Relief Valve Opened.Caused by Excessive Nitrogen Supply Pressure.Pressure Resulted in Leakage Through Solenoid Valve Into Valve Diaphragm