ENS 51244
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ENS Event | |
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09:04 Jul 21, 2015 | |
Title | Surry Unit 2 Trip During Reactor Startup |
Event Description | Unit 2 Reactor automatically tripped during Unit start up following a maintenance outage. The first indication of the reactor trip was the annunciator Reactor Trip by Turbine Trip. There were no complications following the trip and Unit 2 is stable at Hot Shut Down. Decay Heat Removal is being maintained by dumping steam to the Main Condenser. Steam Generator water level is being maintained by the Main Feedwater system.
At the time of the Reactor Trip, Overspeed Protection Circuitry (OPC) Test was being performed on the Unit 2 Main Turbine. The SOV Turbine Trip annunciator was received. The cause of the reactor trip is under investigation. This notification is being made pursuant to 10 CFR 50.72(b)(2)(iv)(B) for 4-hour notification of Reactor Protection System activation. The Plant responded as expected for the trip. The NRC resident has been notified of the event. There was no radiation release due to this event, nor were there any personnel injuries or contamination events. The licensee has notified the NRC Resident Inspector. |
Where | |
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Surry Virginia (NRC Region 2) | |
Reporting | |
10 CFR 50.72(b)(2)(iv)(B), RPS Actuation | |
Time - Person (Reporting Time:+-1.4 h-0.0583 days <br />-0.00833 weeks <br />-0.00192 months <br />) | |
Opened: | Bret Rickert 07:40 Jul 21, 2015 |
NRC Officer: | Daniel Mills |
Last Updated: | Jul 21, 2015 |
51244 - NRC Website
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Unit 2 | |
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Reactor critical | Critical |
Scram | A/R |
Before | Power Operation (5 %) |
After | Hot Standby (0 %) |
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