ENS 43541
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ENS Event | |
|---|---|
06:05 Aug 1, 2007 | |
| Title | Unusual Event Declared Due to Fire in Protected Area Greater than 10 Minutes |
| Event Description | An Unusual Event was declared based on a fire lasting > 10 minutes within the Protected Area. Fire was on a Pole Mounted Transformer located on the 230 KV Supplemental Power System in the North East corner of the Protected Area. Helper Cooling Tower Fans were lost and sequenced back on. Unit 1 maintained 100% Rated Thermal Power. Unit 2 reduced power to 91.2% due to increasing Circulating Water Temperatures per procedure. Fire was extinguished at 0213 using dry chemical fire extinguishers.
Fire was initially spotted at 0152 EDT. It is believed that a snake may have caused the transformer to arc and that the arcing caused the wood transformer pole to catch on fire. Other than the brief loss of helper cooling to the circ water, there was no other impact on the facility. No offsite assistance from the fire department was called or needed. The licensee terminated the Unusual Event at 0250 EDT. The licensee notified local and State Authorities and the NRC Resident Inspector. |
| 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:+-3.17 h-0.132 days <br />-0.0189 weeks <br />-0.00434 months <br />) | |
| Opened: | Tony Springs 02:55 Aug 1, 2007 |
| NRC Officer: | Bill Huffman |
| Last Updated: | Aug 1, 2007 |
| 43541 - NRC Website
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Unit 1 | |
|---|---|
| Reactor critical | Critical |
| Scram | No |
| Before | Power Operation (100 %) |
| After | Power Operation (100 %) |
Unit 2 | |
|---|---|
| Reactor critical | Critical |
| Scram | No |
| Before | Power Operation (100 %) |
| After | Power Operation (91 %) |
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 | |
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