05000397/FIN-2015002-05
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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 are correctly translated into specifications, drawings, procedures, and instructions. Columbia Generating Station Final Safety Analysis Report, Section 8.3.1.4 established the design basis for the stations electrical distribution system and required, in part, that the physical independence of electrical systems comply with the requirements of IEEE 308-1974, IEEE Standard Criteria for Class 1E Power Systems for Nuclear Power Generating Stations. IEEE 308-1974 required, in part, that non-Class 1E circuits may be supplied from Class 1E power systems, provided that the Class 1E systems are not degraded below an acceptable level. Contrary to the above, prior to April 29, 2015, the licensee failed to establish measures to assure that the design basis was correctly translated into specifications, drawings, procedures, and instructions. Specifically, the licensee failed to translate the design basis into specifications for Class 1E electrical power panel E-PP-7AA because Circuit 13 of this power panel supplied a non-Class 1E circuit without appropriate isolation devices such that the non-Class 1E circuit would degrade the Class 1E system below an acceptable level. The finding was of very low safety significance because the finding is a deficiency affecting the design or qualification of a mitigating system where the system maintained its functionality. This issue was entered into the licensees corrective action program as AR 326573326573 |
| Site: | Columbia  |
|---|---|
| Report | IR 05000397/2015002 Section 4OA7 |
| Date counted | Jun 30, 2015 (2015Q2) |
| Type: | NCV: Green |
| cornerstone | Mitigating Systems |
| Identified by: | Licensee-identified |
| Inspection Procedure: | |
| Inspectors (proximate) | N Greene P Elkmann T Hipschman C Scott D Bradley J Drake J Groom J O'Donnell |
| Violation of: | 10 CFR 50 Appendix B Criterion III, Design Control |
| INPO aspect | |
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Finding - Columbia - IR 05000397/2015002 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Finding List (Columbia) @ 2015Q2
Self-Identified List (Columbia)
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