ENS Event | |
|---|---|
13:42 Jul 22, 2004 | |
| Title | Gap Discovered in Control Room Envelope |
| Event Description | During Control Room Boundary investigations a gap in the control room envelope was discovered that exceeded the assumptions of the plant toxic gas analysis. The assumptions for the control room radiological analysis were met with the consideration for the use of Kl. The gap size was determined to be approximately 103 square inches versus an analysis assumption of 58.9 square inches. The gaps were immediately repaired.
The licensee suspects that the gap has existed for 20 or more years and was discovered during a control room heating, ventilation, air-conditioning (HVAC) upgrade. The license has notified the NRC Resident Inspector of this event. |
| Where | |
|---|---|
Ginna  New York (NRC Region 1) | |
| Reporting | |
| 10 CFR 50.72(b)(3)(ii)(B), Unanalyzed Condition | |
| Time - Person (Reporting Time:+0.17 h0.00708 days <br />0.00101 weeks <br />2.32866e-4 months <br />) | |
| Opened: | Kevin Mckaughin 13:52 Jul 22, 2004 |
| NRC Officer: | Gerry Waig |
| Last Updated: | Jul 22, 2004 |
| 40893 - NRC Website
Loading map... | |
Unit 1 | |
|---|---|
| Reactor critical | Critical |
| Scram | No |
| Before | Power Operation (100 %) |
| After | Power Operation (100 %) |
WEEKMONTHYEARENS 499142014-03-13T20:30:00013 March 2014 20:30:00
[Table view]10 CFR 50.72(b)(3)(ii)(B), Unanalyzed Condition Postulated Hot Short Fire Event That Could Adversely Impact Safe Shutdown Equipment ENS 493742013-09-20T20:00:00020 September 2013 20:00:00 10 CFR 50.72(b)(3)(ii)(B), Unanalyzed Condition Potential Design Basis Flooding Issues Related to Battery Room Wall Penetrations and Cable Vault Floor Drains ENS 489182013-04-12T14:10:00012 April 2013 14:10:00 10 CFR 50.72(b)(3)(ii)(B), Unanalyzed Condition Unanalyzed Condition - Missing Backflow Preventer ENS 483332012-09-21T18:00:00021 September 2012 18:00:00 10 CFR 50.72(b)(3)(ii)(B), Unanalyzed Condition Unanalyzed Condition Identified in Appendix R Fire Scenario ENS 471672011-08-18T14:00:00018 August 2011 14:00:00 10 CFR 50.72(b)(3)(ii)(B), Unanalyzed Condition Unanalyzed Condition That Could Potentially Impact Both Trains of 480V Safeguards Buses ENS 467352011-04-06T19:30:0006 April 2011 19:30:00 10 CFR 50.72(b)(3)(ii)(B), Unanalyzed Condition Degraded Fire Barrier ENS 428312006-09-07T02:00:0007 September 2006 02:00:00 10 CFR 50.72(b)(3)(ii)(B), Unanalyzed Condition Historical Unanalyzed Condition Identified ENS 425882006-05-18T19:00:00018 May 2006 19:00:00 10 CFR 50.72(b)(3)(ii)(B), Unanalyzed Condition Unevaluated Failure of Charging Pump in Fire Scenario ENS 408932004-07-22T13:42:00022 July 2004 13:42:00 10 CFR 50.72(b)(3)(ii)(B), Unanalyzed Condition Gap Discovered in Control Room Envelope ENS 401842003-09-19T22:00:00019 September 2003 22:00:00 10 CFR 50.72(b)(3)(ii)(B), Unanalyzed Condition Unanalyzed Condition 2014-03-13T20:30:00 | |