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At 1330 EDT on June 25, 2012, while restor … At 1330 EDT on June 25, 2012, while restoring the Main Turbine Generator (MTG) to service after repairs to Main Unit Transformer 2B (MUT2B), Main Control Room (MCR) staff manually initiated a reactor scram in response to trip of both Reactor Feed Pumps (RFP). All control rods fully inserted. The lowest Reactor Water Level (RWL) reached was 154 inches and, as expected, HPCI and RCIC did not actuate. RWL was restored to normal using the Standby Feedwater (SBFW) system. RWL is currently being maintained in the normal level band with SBFW and Control Rod Drive (CRD) systems. No Safety Relief Valves (SRV) actuated. All isolations and actuations for RWL 3 occurred as expected. Investigation into the trip of RFPs continues.</br>At the time of the scram, all Emergency Core Cooling Systems (ECCS) and Emergency Diesel Generators (EDG) were operable and no safety related equipment was out of service. This report is being made in accordance with 10 CFR 50.72(b)(2)(iv)(B) as an event that results in actuation of the reactor protection system (RPS) when the reactor is critical.</br>The plant is in a normal shutdown electrical lineup with decay heat being removed via steam to the main condenser using the bypass valves. </br>The licensee notified the NRC Resident Inspector.ensee notified the NRC Resident Inspector. +
17:30:00, 25 June 2012 +
48,047 +
16:38:00, 25 June 2012 +
17:30:00, 25 June 2012 +
At 1330 EDT on June 25, 2012, while restor … At 1330 EDT on June 25, 2012, while restoring the Main Turbine Generator (MTG) to service after repairs to Main Unit Transformer 2B (MUT2B), Main Control Room (MCR) staff manually initiated a reactor scram in response to trip of both Reactor Feed Pumps (RFP). All control rods fully inserted. The lowest Reactor Water Level (RWL) reached was 154 inches and, as expected, HPCI and RCIC did not actuate. RWL was restored to normal using the Standby Feedwater (SBFW) system. RWL is currently being maintained in the normal level band with SBFW and Control Rod Drive (CRD) systems. No Safety Relief Valves (SRV) actuated. All isolations and actuations for RWL 3 occurred as expected. Investigation into the trip of RFPs continues.</br>At the time of the scram, all Emergency Core Cooling Systems (ECCS) and Emergency Diesel Generators (EDG) were operable and no safety related equipment was out of service. This report is being made in accordance with 10 CFR 50.72(b)(2)(iv)(B) as an event that results in actuation of the reactor protection system (RPS) when the reactor is critical.</br>The plant is in a normal shutdown electrical lineup with decay heat being removed via steam to the main condenser using the bypass valves. </br>The licensee notified the NRC Resident Inspector.ensee notified the NRC Resident Inspector. +
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