ENS 41160
ENS Event | |
|---|---|
20:00 Oct 29, 2004 | |
| Title | Unanalyzed Condition Discovered in 480 Volt Switchgear Room |
| Event Description | The following information was obtained from the licensee via facsimile:
On October 29, 2004, at approximately 1600 hours0.0185 days <br />0.444 hours <br />0.00265 weeks <br />6.088e-4 months <br />, control room operators were informed by engineering personnel that raceways were located closer than 20 feet from the redundant division without being protected by a fire barrier wrap in accordance with the requirements of 10CFR50 Appendix R, Section III.G.2. In 480 volt switchgear room E7, Brunswick is committed to maintaining redundant safe shutdown circuits by a minimum of 20 feet with no-intervening combustibles, unless the circuits are protected by a one-hour fire barrier wrap. Two conduits containing Division II circuits were identified closer than 20 feet to their redundant counterparts with no wrap installed. The [NRC] Resident Inspector has been notified. INITIAL SAFETY SIGNIFICANCE EVALUATION The initial safety significance of this condition is considered to be minimal. When the condition was recognized, impairments were established in accordance with the fire protection program and compensatory measures were implemented. In addition, fire detection systems in the affected area have been verified to be operable. The affected area is maintained as a combustible free separation zone. CORRECTIVE ACTIONS Impairments have been initiated and appropriate compensatory measures established. The root cause and additional corrective actions are being documented in accordance with the corrective action program. |
| Where | |
|---|---|
Brunswick  North Carolina (NRC Region 2) | |
| Reporting | |
| 10 CFR 50.72(b)(3)(ii)(B), Unanalyzed Condition | |
| LER: | 05000324/LER-2004-003 |
| Time - Person (Reporting Time:+-3.58 h-0.149 days <br />-0.0213 weeks <br />-0.0049 months <br />) | |
| Opened: | Daniel Hardin 16:25 Oct 29, 2004 |
| NRC Officer: | Howie Crouch |
| Last Updated: | Oct 29, 2004 |
| 41160 - NRC Website
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Unit 2 | |
|---|---|
| Reactor critical | Critical |
| Scram | No |
| Before | Power Operation (96 %) |
| After | Power Operation (96 %) |
WEEKMONTHYEARENS 499352014-03-20T13:11:00020 March 2014 13:11:00
[Table view]10 CFR 50.72(b)(3)(ii)(B), Unanalyzed Condition Fire-Related Unanalyzed Condition That Could Impact Credited Safe Shutdown Analysis ENS 492222013-07-29T14:42:00029 July 2013 14:42:00 10 CFR 50.72(b)(3)(ii)(B), Unanalyzed Condition Fire Related Unanalyzed Condition That Could Impact Credited Safe Shutdown Analysis ENS 482532012-08-30T01:34:00030 August 2012 01:34:00 10 CFR 50.72(b)(3)(ii)(B), Unanalyzed Condition Local Control Capability of Emergency Diesel Generator #2 Not Available Under Certain Conditions ENS 474522011-11-17T18:45:00017 November 2011 18:45:00 10 CFR 50.72(b)(3)(ii)(B), Unanalyzed Condition Unanalyzed Condition on Startup Following Maintenance Outage ENS 473412011-10-13T14:00:00013 October 2011 14:00:00 10 CFR 50.72(b)(3)(ii)(B), Unanalyzed Condition Fire Related Unanalyzed Condition That Could Impact Equipment Credited in Safe Shutdown Analysis ENS 444252008-08-19T15:10:00019 August 2008 15:10:00 10 CFR 50.72(b)(3)(ii)(B), Unanalyzed Condition Alternate Safe Shutdown Local Start Capability of All Four Emergency Diesel Generators May Not Be Available Under Certain Conditions ENS 411602004-10-29T20:00:00029 October 2004 20:00:00 10 CFR 50.72(b)(3)(ii)(B), Unanalyzed Condition Unanalyzed Condition Discovered in 480 Volt Switchgear Room 2014-03-20T13:11:00 | |