ENS 42537
From kanterella
Jump to navigation
Jump to search
ENS Event | |
|---|---|
08:39 May 1, 2006 | |
| Title | Unusual Event Declared Due to a Fire in an Isophase Bus Duct Lasting 11 Minutes |
| Event Description | The Unusual Event was declared due to a fire lasting greater than 10 minutes (after discovery) within the protected area. The fire was located on the Isophase Bus Duct near the Main Transformer. A load reduction to 80% rated thermal power is in progress on Unit 1. The fire was extinguished at 0450 with dry chemicals extinguishers."
The licensee believes the fire was on cabling in the Isophase bus duct due to overheating. The licensee has been monitoring hot spots on the duct cabling for several days. The fire did not apparently impact any other systems and observers are at the location monitoring for any change in conditions. No Tech Spec Limiting Conditions of Operations resulted from the fire and there is no impact on Unit 2 operations (which is currently at 100%). Termination criteria will be based on management judgment and safety assessment.
Unusual Event terminated at 0655 [EDT]. Fire extinguished. Reactor power reduction continuing. Management evaluating continued operation. The unit is currently at 77% power and plans are to reduce power to 60% pending their evaluation of continued operation. The licensee will notify the NRC Resident Inspector. Notified R2 DO (K. Landis), NRR EO (M.J. Ross-Lee), IRD Manager (P. Wilson), DHS (S. York), and FEMA ( M. Roland). |
| Where | |
|---|---|
Hatch  Georgia (NRC Region 2) | |
| Reporting | |
| Emergency class: | Unusual Event |
| 10 CFR 50.72(a) (1) (i), Emergency Class Declaration | |
| Time - Person (Reporting Time:+-3.37 h-0.14 days <br />-0.0201 weeks <br />-0.00462 months <br />) | |
| Opened: | Steve Burton 05:17 May 1, 2006 |
| NRC Officer: | Bill Huffman |
| Last Updated: | May 1, 2006 |
| 42537 - NRC Website
Loading map... {"minzoom":false,"maxzoom":false,"mappingservice":"leaflet","width":"350px","height":"250px","centre":false,"title":"","label":"","icon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"zoom":6,"defzoom":14,"layers":["OpenStreetMap"],"image layers":[],"overlays":[],"resizable":false,"fullscreen":false,"scrollwheelzoom":true,"cluster":false,"clustermaxzoom":20,"clusterzoomonclick":true,"clustermaxradius":80,"clusterspiderfy":true,"geojson":"","clicktarget":"","imageLayers":[],"locations":[{"text":"\u003Cb\u003E\u003Cdiv class=\"mw-parser-output\"\u003E\u003Cp\u003E\u003Ca class=\"mw-selflink selflink\"\u003EENS 42537\u003C/a\u003E - \u003Ca href=\"/Hatch\" title=\"Hatch\"\u003EHatch\u003C/a\u003E\n\u003C/p\u003E\u003C/div\u003E\u003C/b\u003E\u003Cdiv class=\"mw-parser-output\"\u003E\u003Cp\u003EUnusual Event Declared Due to a Fire in an Isophase Bus Duct Lasting 11 Minutes\n\u003C/p\u003E\u003C/div\u003E","title":"ENS 42537 - Hatch\n","link":"","lat":31.93298888888889,"lon":-82.34381666666667,"icon":"/w/images/1/14/Southern_Nuclear_icon.png"}],"imageoverlays":null} | |
Unit 1 | |
|---|---|
| Reactor critical | Critical |
| Scram | No |
| Before | Power Operation (100 %) |
| After | Power Operation (90 %) |
WEEKMONTHYEARENS 525262017-02-01T21:05:0001 February 2017 21:05:00
[Table view]10 CFR 50.72(a)(1)(i), Emergency Class Declaration Unusual Event - Potential Security Event ENS 462582010-09-18T20:27:00018 September 2010 20:27:00 10 CFR 50.72(a)(1)(i), Emergency Class Declaration Unusual Event Declared Due to High-High Reactor Building Sump Level Alarm ENS 462272010-09-03T02:50:0003 September 2010 02:50:00 10 CFR 50.72(a)(1)(i), Emergency Class Declaration Notification of Unusual Event Declared Due to High Water Level in the Rcic Instrument Sump ENS 448152009-01-29T13:50:00029 January 2009 13:50:00 10 CFR 50.72(a)(1)(i), Emergency Class Declaration Unusual Event - Toxic Gas Discharge in Waste Gas Treatment Building ENS 435412007-08-01T06:05:0001 August 2007 06:05:00 10 CFR 50.72(a)(1)(i), Emergency Class Declaration Unusual Event Declared Due to Fire in Protected Area Greater than 10 Minutes ENS 425372006-05-01T08:39:0001 May 2006 08:39:00 10 CFR 50.72(a)(1)(i), Emergency Class Declaration Unusual Event Declared Due to a Fire in an Isophase Bus Duct Lasting 11 Minutes ENS 420962005-10-29T17:25:00029 October 2005 17:25:00 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 - Main Transformer Fire ENS 413812005-02-08T01:55:0008 February 2005 01:55:00 10 CFR 50.72(a)(1)(i), Emergency Class Declaration Plant Had a Freon Leak in the Drywell Chiller Room ENS 404282004-01-06T17:58:0006 January 2004 17:58:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release, 10 CFR 50.72(a)(1)(i), Emergency Class Declaration Unusual Event Declared Due to Fire on Refuel Floor 2017-02-01T21:05:00 | |
Retrieved from "https://kanterella.com/w/index.php?title=ENS_42537&oldid=427420"