05000298/FIN-2012003-03
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Finding | |
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Title | Failure to Recognize the Need for An Evaluation and to Properly Document the Bases for Operability |
Description | The inspectors identified two examples of a non-cited violation of 10 CFR Part 50, Appendix B, Criterion V, Instructions, Procedures, and Drawings, associated with the failure of the licensee to recognize the need for an evaluation and to properly document the bases for operability when a degrading nonconforming condition was identified. Specifically, the licensee did not consider all relevant information when assessing: (1) Diesel Generator 1 jacket water heater seismic operability with only two bolts fully engaged and; (2) the impact of a free floating absorbent bag discovered in the Diesel Generator 2 room sump for internal flooding analysis for a medium energy line break. The licensee entered these issues into their corrective action program for resolution as Condition Reports CR-CNS-2012-03137 and CR-CNS-2012-02767. The licensees failure to recognize the need for an evaluation and to properly document the bases for operability when a degraded nonconforming condition was identified was a performance deficiency. The performance deficiency was determined to be more than minor because it was associated with the equipment performance attribute of the Mitigating Systems Cornerstone, and affected the associated cornerstone objective to ensure availability, reliability, and capability of systems that respond to initiating events to prevent undesirable consequences, and is therefore a finding. The inspectors evaluated the finding using Inspection Manual Chapter 0609.04, Phase 1 Initial Screening and Characterization of Findings. The inspectors determined that the finding is of very low safety significance (Green) because the finding: (1) was not a design or qualification issue confirmed not to result in a loss of operability or functionality; (2) did not represent an actual loss of safety function of system or train; (3) did not result in the loss of one or more trains of nontechnical specification equipment; (4) did not screen as potentially risk significant due to seismic, flooding, or severe weather initiating event. The finding was determined to have a cross-cutting aspect in the area of human performance associated with the decision making component because the licensee failed to use conservative assumptions and conduct effectiveness reviews to validate the underlying assumptions when determining Diesel Generator 1 jacket water heater seismic operability with only two bolts fully engaged and impact of a free floating absorbent bag in Diesel Generator 2 room sump for internal flooding analysis for a medium energy line break. |
Site: | Cooper |
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Report | IR 05000298/2012003 Section 1R15 |
Date counted | Jun 30, 2012 (2012Q2) |
Type: | NCV: Green |
cornerstone | Mitigating Systems |
Identified by: | NRC identified |
Inspection Procedure: | IP 71111.15 |
Inspectors (proximate) | G Pick G George L Carson J Josey V Gaddy C Alldredge B Hagar C Henderson |
CCA | H.14, Conservative Bias |
INPO aspect | DM.2 |
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Finding - Cooper - IR 05000298/2012003 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Finding List (Cooper) @ 2012Q2
Self-Identified List (Cooper)
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