05000416/FIN-2015007-04
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Finding | |
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Title | Failure to Identify and Address Impacts of Revised Calculation Output Data |
Description | The team identified a Green, non-cited violation of 10 CFR Part 50, Appendix B, Criterion V, Instructions, Procedures, and Drawings, which states, in part, Activities affecting quality shall be prescribed by documented instructions, procedures, or drawings, of a type appropriate to the circumstances and shall be accomplished in accordance with these instructions, procedures, or drawings. Specifically, on January 22, 2010, the licensee issued calculation EC-Q1111-90028, AC Power Systems, Revision 6, but failed to meet the procedural requirement that other documents impacted by the change be identified and updated. In response to this issue, the licensee reviewed the affected calculations to -4- Attachment determine if the design bases was met and created a corrective action to update calculations. This finding was entered into the licensees corrective action program as Condition Reports CR-GGN-2015-4647 and CR-GGN-2015-4859. The team determined that the licensees failure to identify and address the impacts of the revised calculation on other documents in accordance with EN-DC-126 was a performance deficiency. This performance deficiency was more than minor, and therefore a finding, because if left uncorrected, the performance deficiency would have the potential to lead to a more significant safety concern. Specifically, routinely failing to revise the obsolete input data in electrical calculations and other design documents was a significant programmatic deficiency which can result in incorrect conclusions regarding the ability of the equipment to meet its design bases. In accordance with Inspection Manual Chapter 0609, Appendix A, The Significance Determination Process (SDP) for Findings At-Power, dated June 19, 2012, Exhibit 2, Mitigating Systems Screening Questions, the finding was determined to have very low safety significance (Green) because it was a design or qualification deficiency that did not represent a loss of operability or functionality; did not represent an actual loss of safety function of the system or train; did not result in the loss of one or more trains of nontechnical specification equipment; and did not screen as potentially risk significant due to seismic, flooding, or severe weather. This finding had a human performance crosscutting aspect associated with procedure adherence, because individuals failed to follow procedures, processes, and work instructions. |
Site: | Grand Gulf |
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Report | IR 05000416/2015007 Section 1R21 |
Date counted | Dec 31, 2015 (2015Q4) |
Type: | NCV: Green |
cornerstone | Mitigating Systems |
Identified by: | NRC identified |
Inspection Procedure: | IP 71111.21 |
Inspectors (proximate) | D Loveless H Leake J Watkins L Brandt R Latta T Farnholtz W Sherbin J Mchugh |
Violation of: | 10 CFR 50 Appendix B Criterion V |
CCA | H.8, Procedure Adherence |
INPO aspect | WP.4 |
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Finding - Grand Gulf - IR 05000416/2015007 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Finding List (Grand Gulf) @ 2015Q4
Self-Identified List (Grand Gulf)
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