ENS Event | |
|---|---|
22:30 Apr 29, 2010 | |
| Title | Identified Wiring Discrepancy in "B" Edg |
| Event Description | While performing a walkdown of the 'B' emergency diesel generator remote shutdown circuitry, a wiring discrepancy was identified that could have disabled the Appendix R function of the circuitry. The wiring discrepancy could have prevented complete isolation of the 'B' emergency diesel generator breaker closure circuitry from a postulated fire in the Control Building.
This configuration causes the Appendix R function of the 'B' emergency diesel generator to be inoperable. A roving firewatch has been established and a 7 day action statement has been entered in accordance with the applicable fire protection procedure. Corrective actions are being evaluated to resolve this issue. The licensee has notified the NRC Resident Inspector. |
| Where | |
|---|---|
Summer  South Carolina (NRC Region 2) | |
| Reporting | |
| 10 CFR 50.72(b)(3)(ii)(B), Unanalyzed Condition | |
| Time - Person (Reporting Time:+-2 h-0.0833 days <br />-0.0119 weeks <br />-0.00274 months <br />) | |
| Opened: | Arnie Cribb 20:30 Apr 29, 2010 |
| NRC Officer: | John Knoke |
| Last Updated: | Apr 29, 2010 |
| 45882 - NRC Website
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Unit 1 | |
|---|---|
| Reactor critical | Critical |
| Scram | No |
| Before | Power Operation (100 %) |
| After | Power Operation (100 %) |
WEEKMONTHYEARENS 468112011-05-03T09:14:0003 May 2011 09:14:00
[Table view]10 CFR 50.72(b)(3)(ii)(B), Unanalyzed Condition Two Appendix R Violations That Can Adversely Impact Ability to Shut Down Plant ENS 458822010-04-29T22:30:00029 April 2010 22:30:00 10 CFR 50.72(b)(3)(ii)(B), Unanalyzed Condition Identified Wiring Discrepancy in "B" Edg 2011-05-03T09:14:00 | |