05000373/FIN-2017002-01
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Finding | |
|---|---|
| Title | Failure to Implement A Preventive Maintenance Strategy for 1B RHR Low Pressure Permissive Pressure Switch |
| Description | Green. An NRCidentified finding of very low safety significance was identified for the failure to implement a preventive maintenance strategy for the 1B residual heat removal injection valve low pressure permissive switch in accordance with procedure ERAA2001001, Equipment Classification, Revision 3. The switch failed and was replaced on February 18, 2017. The performance deficiency was documented in the licensees CAP. The inspectors determined that the performance deficiency was more than minor because it was associated with the Mitigating System Cornerstone attribute of equipment performance and adversely affected the cornerstone objective of ensuring the availability, reliability, and capability of systems that respond to initiating events to prevent undesirable consequences. Specifically , the performance deficiency resulted in the inoperability of an emergency core cooling system train of equipment. In accordance with IMC 0609.04, Initial Characterization of Findings, and Exhibit 2 of IMC 0609, Appendix A, The Significance Determination Process for Findings At-Power, issued June 19, 2012, the inspectors determined that this finding is of very low safety significance because all the screening questions associated with IMC 0609, Appendix A, Exhibit 2, were answered No. The switch was replaced and returned to service within 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> of when it was initially identified as a problem. This finding did not have a cross-cutting aspect because the performance deficiency was not indicative of current licensee performance. |
| Site: | LaSalle  |
|---|---|
| Report | IR 05000373/2017002 Section 4OA2 |
| Date counted | Jun 30, 2017 (2017Q2) |
| Type: | Finding: Green |
| cornerstone | Mitigating Systems |
| Identified by: | NRC identified |
| Inspection Procedure: | IP 71152 |
| Inspectors (proximate) | R Ruiz C Phillips C Hunt J Wojewoda W Schaup I Hafeez D Sargis J Cassidy R Zuffa K Stoedter |
| INPO aspect | |
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Finding - LaSalle - IR 05000373/2017002 | |||||||||||||||||||||||||||||||||||||||||||||||
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Finding List (LaSalle) @ 2017Q2
Self-Identified List (LaSalle)
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