05000282/FIN-2012002-01
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Finding | |
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Title | Breaker 212E-44 Failure due to Lack of Preventive Maintenance |
Description | A self-revealed finding of very low safety significance and an NCV of Technical Specification (TS) 5.4.1 occurred on January 19, 2012, due to the safety-related breaker for the 21 reactor vessel gap cooling fan failing while in service. Specifically, preventive maintenance activities used to ensure the breaker remained operable were not performed in a timely manner. Corrective actions for this issue included repairing/replacing the breaker for the 21 reactor vessel gap cooling fan and performing an extent of condition review to determine whether timely preventive maintenance was completed on similar breakers. The inspectors determined that this issue was more than minor because it was associated with the equipment performance attribute of the Initiating Events Cornerstone and impacted the cornerstone objective of limiting the likelihood of those events that upset plant stability (such as having to perform a reactor shutdown). The inspectors determined that the finding was of very low safety significance since it did not contribute to both the likelihood of a reactor trip and the likelihood that mitigation equipment or functions would not be available. The cause of this finding was determined to be cross-cutting in the Human Performance, Work Control area because the licensee failed to appropriately coordinate work activities to support the continued operability and reliability of breaker 212E-44 |
Site: | Prairie Island |
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Report | IR 05000282/2012002 Section 1R12 |
Date counted | Mar 31, 2012 (2012Q1) |
Type: | NCV: Green |
cornerstone | Initiating Events |
Identified by: | Self-revealing |
Inspection Procedure: | IP 71111.12 |
Inspectors (proximate) | C Moore C Thomas D Passehl D Szwarc J Beavers J Jandovitz K Riemer K Stoedter M Phalen P Zurawski R Langstaff V Myers A Dunlop A Shaikh |
CCA | H.5, Work Management |
INPO aspect | WP.1 |
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Finding - Prairie Island - IR 05000282/2012002 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Finding List (Prairie Island) @ 2012Q1
Self-Identified List (Prairie Island)
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