ENS 40768
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ENS Event | |
|---|---|
01:16 May 22, 2004 | |
| Title | Unusual Event Declared |
| Event Description | At 2108 hours0.0244 days <br />0.586 hours <br />0.00349 weeks <br />8.02094e-4 months <br /> a main generator lead failed (exploded) causing a generator lead differential lockout/turbine trip/reactor trip. All rods fully inserted into the core. Both Motor Driven and the Turbine Driven Auxiliary Feedwater Pumps started as expected and are supplying water to the steam generators. Electrical power is being supplied from offsite and all systems are operating as expected. The reactor tripped at 2108 hours0.0244 days <br />0.586 hours <br />0.00349 weeks <br />8.02094e-4 months <br /> and a report of a fire in the switchyard was reported to Control Room at 2109 hours0.0244 days <br />0.586 hours <br />0.00349 weeks <br />8.024745e-4 months <br />. Fire Brigade was dispatched and the fire was reported out at 2142 hours0.0248 days <br />0.595 hours <br />0.00354 weeks <br />8.15031e-4 months <br />. Reflash fire watch has been set. All Emergency Core Cooling Systems and the Emergency Diesel Generators are fully operable if needed. Surry Unit 1 remains at 100% power. Licensee notified State and Local officials of their declaration of an Unusual Event.
The NRC Resident Inspector was notified of the event by the licensee.
The licensee terminated the NOUE at 2256 EDT. Damage appears to be confined to the main generator leads with one lead missing and some damage to other leads. The plant is stable with RCS temperature at 547 degrees Fahrenheit, 2235 psia. The NRC Resident Inspector will be notified of the NOUE termination by the licensee. Notified R2DO (Jay Henson), NRR EO (Edwin Hackett), DIRO (Tom Andrews), FEMA (David Barden), DHS (Robert Bozzo). See EN 40769 , 40770 & 40771 for related Non Emergency notifications. |
| Where | |
|---|---|
Surry  Virginia (NRC Region 2) | |
| Reporting | |
| Emergency class: | Unusual Event |
| 10 CFR 50.72(a) (1) (i), Emergency Class Declaration | |
| Time - Person (Reporting Time:+-3.67 h-0.153 days <br />-0.0218 weeks <br />-0.00503 months <br />) | |
| Opened: | Terry Huff 21:36 May 21, 2004 |
| NRC Officer: | John Mackinnon |
| Last Updated: | May 21, 2004 |
| 40768 - NRC Website
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Unit 2 | |
|---|---|
| Reactor critical | Critical |
| Scram | A/R |
| Before | Power Operation (100 %) |
| After | Hot Shutdown (0 %) |
WEEKMONTHYEARENS 471892011-08-23T18:04:00023 August 2011 18:04:00
[Table view]10 CFR 50.72(a)(1)(i), Emergency Class Declaration Notification of an Unusual Event Due to a Seismic Event ENS 467612011-04-16T22:55:00016 April 2011 22:55:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release, 10 CFR 50.72(b)(2)(iv)(B), RPS System Actuation, 10 CFR 50.72(a)(1)(i), Emergency Class Declaration, 10 CFR 50.72(b)(3)(iv)(A), System Actuation Unusual Event Declared Due to Loss of All Offsite Power from Tornado Damage ENS 428882006-10-07T22:01:0007 October 2006 22:01:00 10 CFR 50.72(a)(1)(i), Emergency Class Declaration Manual Scram Due to Unusual Noise in Turbine Building ENS 411762004-11-06T07:52:0006 November 2004 07:52:00 10 CFR 50.72(a)(1)(i), Emergency Class Declaration Notice of Unusual Event Due to a Fire in the Unit 1 Turbine Basement ENS 407682004-05-22T01:16:00022 May 2004 01:16:00 10 CFR 50.72(a)(1)(i), Emergency Class Declaration Unusual Event Declared ENS 401682003-09-18T13:00:00018 September 2003 13:00:00 10 CFR 50.72(b)(2)(iv)(B), RPS System Actuation, 10 CFR 50.72(a)(1)(i), Emergency Class Declaration, 10 CFR 50.72(b)(3)(iv)(A), System Actuation Unusual Event Declared Due to Expected Severe Weather 2011-08-23T18:04:00 | |
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