05000528/FIN-2013002-08
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Finding | |
|---|---|
| Title | Licensee-Identified Violation |
| Description | Title 10 CFR Part 50, Appendix B, Criterion III, Design Control, requires in part, that measures shall be established to assure that applicable regulatory requirements and the design basis, for those structures, systems, and components to which this appendix applies, are correctly translated into specifications, drawings, procedures, and instructions. Contrary to the above, prior to June 29, 2011, the licensee failed to establish measures to assure that applicable regulatory requirements and the design basis, for those structures, systems, and components to which this appendix applies, were correctly translated into specifications, drawings, procedures, and instructions. Specifically, the licensee identified that the Unit 1 Qualified Safety Parameter Display System (QSPDS) did not meet the cable separation criteria of Regulatory Guide 1.75, Physical Independence of Electrical Systems. Both trains of power supply cables were found wrapped around each other. The licensees investigation concluded that PVNGS Specification 13-EN-306, Installation Specification for Cable Splicing and Terminations, had not been adequately implemented into modification and maintenance instructions. The licensee implemented corrective actions to restore the required cable separation and revise Procedure 30DP-0AP01, Maintenance Work Order Writers Guide, to require that cable separation criterion be incorporated into main control board work instructions. The inspectors concluded that the finding is of very low safety-significance (Green) because the inadequate power supply cable separation would only result in the loss of power to the modems that feed the QSPDS plasma displays on the main control board, and the train A Post Accident Monitoring recorders, fed directly from the QSPDS chassis rack, would still be available to plant operators. Additionally, the licensee entered the issue into the corrective action program as CRDR 3802732. |
| Site: | Palo Verde  |
|---|---|
| Report | IR 05000528/2013002 Section 4OA7 |
| Date counted | Mar 31, 2013 (2013Q1) |
| Type: | NCV: Green |
| cornerstone | Mitigating Systems |
| Identified by: | Licensee-identified |
| Inspection Procedure: | |
| Inspectors (proximate) | L Ricketson G Guerra M Brown P Elkmann L Carson D Allen J Melfi J Laughlin B Larson M Baquera D Reinert N Greene |
| Violation of: | 10 CFR 50 Appendix B Criterion III, Design Control |
| INPO aspect | |
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Finding - Palo Verde - IR 05000528/2013002 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Finding List (Palo Verde) @ 2013Q1
Self-Identified List (Palo Verde)
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