Finding | |
|---|---|
| Title | Post-Maintenance Testing Failed to Demonstrate Testable Check Valve Function |
| Description | A self-revealed Green finding of very low safety significance and an associated Non-Cited Violation (NCV) of 10 CFR 50, Appendix B, Criterion XI, Test Control, was documented by the inspectors for the licensees failure to perform post-maintenance testing that would demonstrate that structures, systems and components (SSCs) would perform satisfactorily in service. Specifically, following maintenance on the Unit 2 B residual heat removal (RHR) shutdown cooling (SDC) return testable check valve, 2E12F050B, and the Unit 1 A RHR SDC return testable check valve, 1E12F050A, the post maintenance test performed failed to identify that they would not open fully when in service, resulting in the valves being unable to pass full flow during SDC mode of RHR operation. |
| Site: | LaSalle  |
|---|---|
| Report | IR 05000373/2018001 Section 1R15 |
| Date counted | Mar 31, 2018 (2018Q1) |
| Type: | NCV: Green |
| cornerstone | Mitigating Systems |
| Identified by: | Self-revealing |
| Inspection Procedure: | IP 71111.15 |
| Inspectors (proximate) | R Ruiz J Havertape W Schaup C Zoia B Dickson |
| Violation of: | 10 CFR 50 Appendix B 10 CFR 50 Appendix B Criterion XI |
| INPO aspect | WP.1 |
| ' | |
Finding - LaSalle - IR 05000373/2018001 | |||||||||||||||||||||||||||||||||||||||||||||||||
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Finding List (LaSalle) @ 2018Q1
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