05000458/FIN-2015004-06
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Finding | |
|---|---|
| Title | Failure to Restore Main Steam Positive Leakage Control System to Operable Prior to Changing Modes |
| Description | The inspectors reviewed a self-revealing, non-cited violation of Technical Specification 3.0.4, Limiting Condition for Operation Applicability, for the licensees failure to restore safety-related equipment to operable status prior to changing modes. Specifically, the licensee failed to restore Division II of the main steam positive leakage control system to operable status prior to entering a mode of applicability for Technical Specification 3.6.1.9. The licensee entered this issue into their corrective action program as Condition Report CR-RBS-2015-03581. The licensee restored compliance by restoring Division II of main steam positive leakage control system to an operable status by restoring service water to the Division II penetration valve leakage control system (LSV) compressor. Corrective actions included training for operations personnel on plant status control and implementation of a physical method of identifying equipment that has been administratively repositioned. The performance deficiency was more than minor, and therefore a finding, because it was associated with the barrier performance attribute of the Barrier Integrity Cornerstone and adversely affected the cornerstone objective to provide reasonable assurance that physical design barriers protect the public from radionuclide releases caused by accidents or events. Specifically, the reactor was taken to Mode 2 with Division II of the main steam positive leakage control system inoperable. The inspectors performed the initial significance determination using NRC Inspection Manual Chapter 0609, Appendix A, Exhibit 3, Barrier Integrity Screening Questions. The inspectors determined that the finding was of very low safety significance (Green) because (1) the finding did not represent an actual open pathway in the physical integrity of reactor containment (valves, airlocks, etc.), containment isolation systems (logic and instrumentation), or heat removal components and (2) the finding did not involve an actual reduction in function of hydrogen igniters in the reactor containment. This finding had a cross-cutting aspect in the area of human performance associated with procedure adherence because the licensee failed to ensure that individuals follow processes, procedures, and work instructions. |
| Site: | River Bend  |
|---|---|
| Report | IR 05000458/2015004 Section 4OA2 |
| Date counted | Dec 31, 2015 (2015Q4) |
| Type: | NCV: Green |
| cornerstone | Barrier Integrity |
| Identified by: | Self-revealing |
| Inspection Procedure: | IP 71152 |
| Inspectors (proximate) | B Parks G Warnick J Sowa L Brandt L Carson M Hayes M Phalen M Stafford N Greene P Hernandez |
| Violation of: | Technical Specification - Procedures Technical Specification |
| CCA | H.8, Procedure Adherence |
| INPO aspect | WP.4 |
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Finding - River Bend - IR 05000458/2015004 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Finding List (River Bend) @ 2015Q4
Self-Identified List (River Bend)
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