05000528/FIN-2014002-02
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Finding | |
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| Title | Failure to Comply with Technical Specification 3.7.2 |
| Description | The inspectors identified a non-cited violation of Technical Specification Limiting Condition for Operation 3.7.2, Condition G, for the failure of plant personnel to follow the actions specified in Technical Specification 3.7.2 for one main steam isolation valve inoperable in Mode 1. Specifically, following the failure of main steam isolation valve 170 on November 6, 2013, Unit 1 operators exceeded the Technical Specification time requirement to place the Unit in Mode 2 before restoring operability of the equipment. The licensee entered this issue into the corrective action program as Action Request 4521714. The failure of plant personnel to perform the actions specified in Technical Specification 3.7.2, Condition G, was a performance deficiency. The performance deficiency is more than minor and therefore is a finding, because it affected the human performance attribute of the Mitigating Systems Cornerstone objective to ensure the availability, reliability, and capability of systems that respond to initiating events to prevent undesirable consequences. The inspectors performed the initial significance determination for the failed MSIV-170. For this evaluation, the valve was failed in the open position. The inspectors used NRC Inspection Manual Chapter 0609, Attachment 0609.04, Initial Characterization of Findings, and NRC Inspection Manual Chapter 0609, Appendix A, Exhibit 2, Mitigating Systems Screening Questions, to determine that the finding screened to a detailed risk evaluation because it involved a potential loss of one train of safety-related equipment for longer than the technical specification allowed outage time. A Region IV senior reactor analyst performed the detailed risk evaluation, which determined that the finding was of very low safety significance. This finding had a cross-cutting aspect in the area of human performance, associated with the aspect of consistent process, because the licensee did not use a consistent, systematic approach to make decisions regarding the operability of main steam isolation valve 170 [H.13]. |
| Site: | Palo Verde  |
|---|---|
| Report | IR 05000528/2014002 Section 1R15 |
| Date counted | Mar 31, 2014 (2014Q1) |
| Type: | NCV: Green |
| cornerstone | Mitigating Systems |
| Identified by: | NRC identified |
| Inspection Procedure: | IP 71111.15 |
| Inspectors (proximate) | B Parks D Reinert G Guerra J O'Donnell L Carson M Baquera T Brown |
| Violation of: | Technical Specification |
| CCA | H.13, Consistent Process |
| INPO aspect | DM.1 |
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Finding - Palo Verde - IR 05000528/2014002 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Finding List (Palo Verde) @ 2014Q1
Self-Identified List (Palo Verde)
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