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At 2243 on 9/22/2003 a Reactor scram occurAt 2243 on 9/22/2003 a Reactor scram occurred while performing Main Turbine control valve testing. Preliminary investigations indicate that high Reactor pressure was the signal that caused the scram. As a result of the scram, a Reactor low level 3 (9.7 inch) signal was received as expected from a high power scram due to the rapid coolant shrinkage. All expected actions for the low reactor level 3 (9.7 inch) signal occurred as expected. The plant is stable in Mode 3 (hot shutdown) with level being controlled with the Feedwater System and Reactor pressure being controlled with the Main Turbine Bypass valves.</br>All control rods fully inserted, no ECCS actuations were received, and the electrical grid is stable. The licensee notified the NRC Resident Inspector.ensee notified the NRC Resident Inspector.  +
03:43:00, 23 September 2003  +
02:44:00, 23 September 2003  +
03:43:00, 23 September 2003  +
At 2243 on 9/22/2003 a Reactor scram occurAt 2243 on 9/22/2003 a Reactor scram occurred while performing Main Turbine control valve testing. Preliminary investigations indicate that high Reactor pressure was the signal that caused the scram. As a result of the scram, a Reactor low level 3 (9.7 inch) signal was received as expected from a high power scram due to the rapid coolant shrinkage. All expected actions for the low reactor level 3 (9.7 inch) signal occurred as expected. The plant is stable in Mode 3 (hot shutdown) with level being controlled with the Feedwater System and Reactor pressure being controlled with the Main Turbine Bypass valves.</br>All control rods fully inserted, no ECCS actuations were received, and the electrical grid is stable. The licensee notified the NRC Resident Inspector.ensee notified the NRC Resident Inspector.  +
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00:00:00, 23 September 2003  +
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22:44:41, 24 September 2017  +
02:44:00, 23 September 2003  +
-0.0408 d (-0.98 hours, -0.00583 weeks, -0.00134 months)  +
03:43:00, 23 September 2003  +
Automatic Reactor Scram Received During Main Turbine Control Valve Testing  +
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1  +