ENS 49373: Difference between revisions
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StriderTol (talk | contribs) (Created page by program invented by Mark Hawes) |
StriderTol (talk | contribs) (Created page by program invented by StriderTol) |
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| event date = 09/20/2013 09:17 CDT | | event date = 09/20/2013 09:17 CDT | ||
| last update date = 09/20/2013 | | last update date = 09/20/2013 | ||
| title = Safe Shutdown Analysis Reveals Noncompliance | | title = Safe Shutdown Analysis Reveals Noncompliance for a Fire Outside Diesel Room | ||
| event text = During the performance of a focused area self assessment (FASA) for the Clinton Power Station Fire Protection Program, the FASA team identified a noncompliance with the Safe Shutdown Analysis for a fire outside the Diesel Generator (DG) rooms (i.e., Fire Zone CB-1e, CB-1f, CB-2 and CB-4). The CO2 panels for each DG train are all located in the same area outside the DG engine bay rooms (i.e., 737' Control Building) and a fire in this area could cause fire damage to all three CO2 panels and/or wiring such that a trip (short) could be initiated to all three DG Ventilation (VD) fans. Loss of the VD fans (1VD01CA, B and C) results in loss of cooling in the DG rooms and ultimately loss of the diesels. This constitutes an Unanalyzed Condition that Significantly Affects Plant Safety. | | event text = During the performance of a focused area self assessment (FASA) for the Clinton Power Station Fire Protection Program, the FASA team identified a noncompliance with the Safe Shutdown Analysis for a fire outside the Diesel Generator (DG) rooms (i.e., Fire Zone CB-1e, CB-1f, CB-2 and CB-4). The CO2 panels for each DG train are all located in the same area outside the DG engine bay rooms (i.e., 737' Control Building) and a fire in this area could cause fire damage to all three CO2 panels and/or wiring such that a trip (short) could be initiated to all three DG Ventilation (VD) fans. Loss of the VD fans (1VD01CA, B and C) results in loss of cooling in the DG rooms and ultimately loss of the diesels. This constitutes an Unanalyzed Condition that Significantly Affects Plant Safety. | ||
Compensatory measures are in-place that will allow these VD trips to be overridden and the VD fans to be restarted from the Main Control Room. | Compensatory measures are in-place that will allow these VD trips to be overridden and the VD fans to be restarted from the Main Control Room. | ||
Latest revision as of 22:00, 1 March 2018
| Where | |
|---|---|
Clinton  Illinois (NRC Region 3) | |
| Reporting | |
| 10 CFR 50.72(b)(3)(ii)(B), Unanalyzed Condition | |
| LER: | 05000461/LER-2013-005 |
| Time - Person (Reporting Time:+3.72 h0.155 days <br />0.0221 weeks <br />0.0051 months <br />) | |
| Opened: | Robert Rush 18:00 Sep 20, 2013 |
| NRC Officer: | Charles Teal |
| Last Updated: | Sep 20, 2013 |
| 49373 - NRC Website
| |