05000461/FIN-2015001-02
From kanterella
Jump to navigation
Jump to search
Finding | |
|---|---|
| Title | Unqualified safety-related cables used in a submerged environment |
| Description | The inspectors identified a finding and an associated non-cited violation (NCV) of 10 CFR Part 50 Appendix B, Criterion III, Design Control, for the failure to maintain safety-related cables for the shutdown service water (SX) system in an environment for which they were designed. Specifically, the licensee failed to maintain SX safety-related cables in an environment for which they were designed when the cables were allowed to be submerged in water inside cable vaults. The design of the system used monitor and pump down the cable vaults did not indicate that the system had failed, leading the licensee to believe that the environmental conditions in which the cables were stored were acceptable even when they were not. The licensee documented this issue in their CAP as AR 02474543. Corrective actions included draining the cable vaults so that the cables were no longer submerged and planned to repair all affected solar powered pumps and associated alarm systems. The licensees failure to maintain safety-related cables for the SX system in an environment for which they were designed was a performance deficiency. Specifically, the licensee failed to maintain SX safety-related cables in an environment for which they were designed when the cables were allowed to be submerged in water inside cable vaults. The performance deficiency was determined to be more than minor because the finding was associated with the Mitigating Systems Cornerstone attribute of equipment performance and affected the cornerstone objective of ensuring the availability, reliability, and capability of systems that respond to initiating events to prevent undesirable consequences. The inspectors determined the finding could be evaluated using IMC 0609, Significance Determination Process, Attachment 0609.04, Initial Characterization of Findings, issued on June 19, 2012. Specifically, the inspectors used IMC 0609 Appendix A SDP for Findings At-Power, issued June 19, 2012, Exhibit 2, Mitigating Systems Screening Questions to screen the finding. The finding screened as of very low safety significance (Green) because the inspectors answered Yes to the question does the SSC maintain its operability or functionality. Specifically, the SX system submerged cables did not cause the SX system to be inoperable or nonfunctional. The inspectors determined this finding affected the cross-cutting area of problem identification and resolution in the aspect of resolution, where the organization takes effective corrective actions to address issues in a timely manner commensurate with their safety significance. Specifically, the licensee failed to implement effective corrective actions to address an adverse trend of water in cable vaults which led to SX safety-related cables being submerged in water. [P.3] |
| Site: | Clinton  |
|---|---|
| Report | IR 05000461/2015001 Section 4OA2 |
| Date counted | Mar 31, 2015 (2015Q1) |
| Type: | NCV: Green |
| cornerstone | Mitigating Systems |
| Identified by: | NRC identified |
| Inspection Procedure: | IP 71152 |
| Inspectors (proximate) | C Hunt E Sanchez-Santiago J Gilliam J Mcghee M Jones S Bell S Mischke W Schaup |
| Violation of: | 10 CFR 50 Appendix B Criterion III, Design Control |
| CCA | P.3, Resolution |
| INPO aspect | PI.3 |
| ' | |
Finding - Clinton - IR 05000461/2015001 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Finding List (Clinton) @ 2015Q1
Self-Identified List (Clinton)
| ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||