05000220/FIN-2013003-03
From kanterella
Jump to navigation
Jump to search
Finding | |
---|---|
Title | Inadequate Design Control for Battery Sizing Calculation |
Description | The inspectors identified an NCV at Unit 2 of 10 CFR Part 50, Appendix B, Criterion III, Design Control, because CENG did not verify the adequacy of the design with respect to battery 2C. Specifically, by failing to size the battery to the most limiting time period, the sizing calculation significantly overstated the available design margin. CENGs corrective actions included generating condition report CR-2013-005117 and evaluating the condition for operability. This finding is more than minor because it was associated with the design control attribute of the Mitigating Systems cornerstone and affected the cornerstone objective to ensure the availability, reliability, and capability of systems that respond to initiating events to prevent undesirable consequences. 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 this finding is of very low safety significance (Green) because the performance deficiency was not a design or qualification deficiency, did not involve an actual loss of safety function, did not represent actual loss of a safety function of a single train for greater than its TS allowed outage time, and did not screen as potentially risk-significant due to a seismic, flooding, or severe weather initiating event. The inspectors did not assign a cross-cutting aspect because the finding was not indicative of current performance. |
Site: | Nine Mile Point |
---|---|
Report | IR 05000220/2013003 Section 4OA2 |
Date counted | Jun 30, 2013 (2013Q2) |
Type: | NCV: Green |
cornerstone | Mitigating Systems |
Identified by: | NRC identified |
Inspection Procedure: | IP 71152 |
Inspectors (proximate) | J Lilliendahl P Kaufman D Schroeder K Kolaczyk B Haagensen A Rosebrook J Krafty J Laughlin B Dionne E Miller B Scrabeck |
Violation of: | 10 CFR 50 Appendix B Criterion III, Design Control Technical Specification |
INPO aspect | |
' | |
Finding - Nine Mile Point - IR 05000220/2013003 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Finding List (Nine Mile Point) @ 2013Q2
Self-Identified List (Nine Mile Point)
| |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||