05000338/FIN-2010002-02
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Finding | |
|---|---|
| Title | Safety-Related Breaker Cubicle Fire Issue |
| Description | An unresolved item (URI) was identified by the inspectors relating to preventative maintenance of main contactors or motor starters for 480V circuit breakers. On April 22, 2009, a licensee operator escorting several fire watch personnel to instruct them on which areas to patrol noticed an odor from an electrical fire located in the Unit 1 cable vault area. After an initial search was performed, the Shift Manager was notified and responded with additional operators who performed a search of the area. The source of the fire was identified at the safety-related breaker cubicle for01-EE-BKR-1J1-2S-J1, D CRDM fan. The operators obtained a CO2 fire extinguisher, opened the cubicle and observed flame/smoke, and extinguished the fire with CO2. A visual examination of the breaker revealed that the molded case circuit breaker and main contactor had experienced the most damage. The licensee initiated CR331819and the associated root cause evaluation (RCE) 000976 in accordance with their CAP. The inspectors review of RCE000976, which was completed on February 9, 2010, following input from a vendor evaluation, is continuing with additional information required to determine if a performance deficiency exists and its respective significance. This issue is identified as URI 05000338, 339/2010002-02, Safety-Related Breaker Cubicle Fire Issue. |
| Site: | North Anna  |
|---|---|
| Report | IR 05000338/2010002 Section 1R12 |
| Date counted | Mar 31, 2010 (2010Q1) |
| Type: | URI: |
| cornerstone | Mitigating Systems |
| Identified by: | NRC identified |
| Inspection Procedure: | IP 71111.12 |
| Inspectors (proximate) | J Reece P Fillion J Dodson G Mccoy R Clagg M Courseyr Claggm Meeks G Laska J Reece |
| INPO aspect | |
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Finding - North Anna - IR 05000338/2010002 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Finding List (North Anna) @ 2010Q1
Self-Identified List (North Anna)
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