05000416/FIN-2011002-03
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Finding | |
|---|---|
| Title | Failure to Demonstrate Maintenance Effectiveness of Train B Control Room Air Conditioner |
| Description | The inspectors identified a noncited violation of 10 CFR Part 50.65(a)(2) for the licensees failure to demonstrate that the performance of the train B control room air conditioner was being effectively controlled through the performance of appropriate preventive maintenance. Engineering did not properly evaluate maintenance rule functional failures resulting in the system remaining in an a(2) status instead of an a(1) status. As corrective action, the train B control room air conditioner was moved into an a(1) status. The licensee entered this issue into their corrective action program as Condition Report CR-GGN-2011-01623. The finding was more than minor because it was associated with the equipment performance attribute of the Mitigating Systems Cornerstone and adversely affected the cornerstone objective to ensure the availability, reliability, and capability of systems that respond to initiating events to prevent undesirable consequences. Inspectors performed a Phase 1 screening, in accordance with Inspection Manual Chapter 0609, Attachment 4, Phase 1 Initial Screening and Characterization of Findings, and determined that the finding was of very low safety significance (Green) because the maintenance rule aspect of the finding did not cause an actual loss of safety function of the system nor did it cause a component to be inoperable. As corrective action, the train B control room air conditioner was moved into an (a)(1) status. This finding had a crosscutting aspect in the area of human performance associated with the decision making component because licensee personnel failed to make appropriate safety-significant or risk-significant decisions to address the multiple failures of the train B control room air conditioner compressor. H.1(a) |
| Site: | Grand Gulf  |
|---|---|
| Report | IR 05000416/2011002 Section 1R12 |
| Date counted | Mar 31, 2011 (2011Q1) |
| Type: | NCV: Green |
| cornerstone | Mitigating Systems |
| Identified by: | NRC identified |
| Inspection Procedure: | IP 71111.12 |
| Inspectors (proximate) | L Ricketson C Graves R Smith V Gaddy A Fairbanks E Uribe M Baquera |
| CCA | H.13, Consistent Process |
| INPO aspect | DM.1 |
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Finding - Grand Gulf - IR 05000416/2011002 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Finding List (Grand Gulf) @ 2011Q1
Self-Identified List (Grand Gulf)
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