05000298/FIN-2012004-03
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Finding | |
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Title | Failure to Maintain Design Control of the Reactor Equipment Cooling System |
Description | The inspectors documented a self-revealing, non-cited violation of 10 CFR Part 50, Appendix B, Criterion III, Design Control, associated with the licensees failure to correctly translate certain parts of the design bases into documents used to order and install overload relays/heaters associated with the reactor equipment cooling system pump B motor. This failure resulted in the licensee installing incorrect overload relays/heaters which resulted in a trip of the reactor equipment cooling system pump B motor during normal operation. The issue was entered into the licensees corrective action program as Condition Reports CR-CNS-2012-05389 and CR-CNS-2012-05401. The licensees failure to correctly translate certain parts of the design bases into procurement and installation documents for overload relays/heaters associated with the reactor equipment cooling system pump B motor was a performance deficiency. This performance deficiency was determined to be more than minor and is therefore a finding because it was associated with the design control attribute of the Mitigating Systems Cornerstone, in that this performance deficiency allowed the licensee to install an undersized overload relay/heater, which resulted in the pump tripping during normal operation, and thereby affecting the associated cornerstone objective to ensure availability, reliability, and capability of systems that respond to initiating events to prevent undesirable consequences. The inspectors evaluated the finding using Inspection Manual Chapter 0609, Appendix A, The Significance Determination Process For Findings At-Power. The inspectors determined that the finding is of very low safety significance (Green) because the finding: (1) was not a deficiency affecting the design or qualification of a mitigating structure, system or component, and did not result in a loss of operability or functionality; (2) did not represent a loss of system and/or function; (3) did not represent an actual loss of function of at least a single train for longer than its technical specification allowed outage time, or two separate safety systems out-of-service for longer than its technical specification allowed outage time; and (4) did not represent an actual loss of function of one or more nontechnical specification trains of equipment designated as high safety-significance in accordance with the licensees maintenance rule program. The inspectors determined that the apparent cause of this finding was that the licensee had changed their design documents prior to full implementation of a modification and had used the revised documents to plan work on unmodified equipment. Therefore, the finding has a cross-cutting aspect in the area of human performance associated with resources component because the licensee failed to provide complete, accurate, and up-to-date design documentation. |
Site: | Cooper |
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Report | IR 05000298/2012004 Section 1R13 |
Date counted | Sep 30, 2012 (2012Q3) |
Type: | NCV: Green |
cornerstone | Mitigating Systems |
Identified by: | Self-revealing |
Inspection Procedure: | IP 71111.13 |
Inspectors (proximate) | J Josey J Laughlin P Elkmann R Hagar A Fairbanks C Henderson G Guerra |
CCA | H.7, Documentation |
INPO aspect | WP.3 |
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Finding - Cooper - IR 05000298/2012004 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Finding List (Cooper) @ 2012Q3
Self-Identified List (Cooper)
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