05000361/FIN-2012007-01
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Finding | |
|---|---|
| Title | Adequacy of the Trip/Transient and Event Review Procedure |
| Description | The team identified an unresolved item associated with Operations Procedure SO123-0-A8, Trip/Transient and Event Review, that required a formal review of operator actions and safety systems to determine if important systems responded as design. The formal review was not completed. Description: On March 19, 2012, the team requested to review the results of operations post trip/transient evaluation of the January 31, Unit 3 tube leak event. Operations Procedure SO123-0-A8, Trip/Transient and Event Review, Revision 8, required a detailed post trip review following unplanned reactor trips. However, a formal trip/transient and event review was not available because operations personnel determined the Unit 3 event was planned and therefore a formal review was not required. On March 27, 2012, Team met with operations personnel to discuss items on a draft Unit 3 trip/transient evaluation provided to the team. The team also discussed with operations personnel the requirements in Operations Procedure SO123-0-A8, and concluded a basis for what was planned and unplanned was not defined. Operations personnel determined the Unit 3 reactor trip was a planned reactor trip because Abnormal Operating Instruction SO23-13-14, Reactor Coolant Leak, Revision 16, Section 4, had described actions for primary-to-secondary leakage. Specifically, this section stated, in part, under plant conditions of increasing steam generator tube leakage, operations personnel were required to perform a rapid power reduction to less than 35 percent power, then trip the reactor. The team discussed with operations personnel that definitions for unplanned events have been established through industry standards to report on plant performance. These standards include NEI 99-02, Regulatory Assessment Performance Indicator Guideline, Revision 6. Industry Guidance NEI 99-02 indicated that Unit 3 reactor trip should be considered unplanned since the reactor trip was required by an abnormal operating instruction and would count against the performance indicator for unplanned reactor trips. NRC Regulatory Issue Summary (RIS) 2000-08, Voluntary Submission of Performance Indicator Data, Revision 1, allows industry to use NEI 99-02 to report performance indicator data. Additional review and follow up will be required to review the corrective actions associated with the procedural guidance for an event review and then determine whether this issue represents a performance deficiency or constitutes a violation of NRC requirements. |
| Site: | San Onofre  |
|---|---|
| Report | IR 05000361/2012007 Section 4OA5 |
| Date counted | Jun 30, 2012 (2012Q2) |
| Type: | URI: |
| cornerstone | Mitigating Systems |
| Identified by: | NRC identified |
| Inspection Procedure: | IP 93800 |
| Inspectors (proximate) | C Thurston E Collins E Murphy J Ortega Luciano J Reynoso J Rivera Ortiz A Johnsonb Hagarg Werner J Reynoso J Rivera-Ortiz |
| INPO aspect | |
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Finding - San Onofre - IR 05000361/2012007 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Finding List (San Onofre) @ 2012Q2
Self-Identified List (San Onofre)
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