05000368/LER-1979-006-03, On B Core Protection Calculator Fail & Ceac Indicators,Linear Power Density & DNBR Received Low Pressurizer Trips.Caused by Ground Fault Relays Falling Out on Low Bus Voltage

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05000368/LER-1979-006-03, /03L-0 on 790109:during Power Escalation Testing, B Core Protection Computer Declared Inoperable When Low Pressurizer Pressure Trips Received.Investigation Showed Ground Fault Relays Fall Out on Low Bus Voltage

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