05000361/FIN-2011002-02
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Finding | |
|---|---|
| Title | Failure to Follow Procedures to Establish Compensatory Measures |
| Description | The Inspectors identified a noncited violation of 10 CFR Part 50, Appendix B, Criterion V, Instruction, Procedures, and Drawing, for the failure of operations personnel to follow the operability determination procedure and establish compensatory measures associated with an emergency diesel generator. Specifically, on February 23, 2011, operations personnel failed to establish temporary procedures as compensatory measures associated with an emergency diesel generator when an immersion heater was removed from service. On March 18, interim corrective actions were taken that included operator required reading (priority 2 reading) to ensure that on-shift licensed operators use conservative decision making regarding compensatory measures. Planned corrective actions will be part of a root cause evaluation. These issues have been entered into the licensees corrective action program as Nuclear Notifications NNs 201365616, 201348283 and 201378245. The performance deficiency was more than minor and is therefore a finding because it was associated with the Mitigating Systems Cornerstone attribute of procedure quality and affected the cornerstone objective to ensure the availability, reliability, and capability of systems that respond to initiating events to prevent undesirable consequences. Using the NRC Manual Chapter 0609, Attachment 4, Phase 1 - Initial Screening and Characterization of Findings, the finding is determined to have very low safety significance because it did not result in the loss of safety function of any technical specification required equipment. The finding was determined to have a crosscutting aspect in the area of human performance associated with the decision-making component because the licensee failed to verify the validity of underlying assumptions for operability decision-making H.1(b) |
| Site: | San Onofre  |
|---|---|
| Report | IR 05000361/2011002 Section 1R15 |
| Date counted | Mar 31, 2011 (2011Q1) |
| Type: | NCV: Green |
| cornerstone | Mitigating Systems |
| Identified by: | NRC identified |
| Inspection Procedure: | IP 71111.15 |
| Inspectors (proximate) | M Young R Kellar G Tutak B Hagar Z Hollcraft P Elkman G Guerra R Lantz S Garchow J Reynoso G Warnick C Osterholtz |
| CCA | H.14, Conservative Bias |
| INPO aspect | DM.2 |
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Finding - San Onofre - IR 05000361/2011002 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Finding List (San Onofre) @ 2011Q1
Self-Identified List (San Onofre)
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