05000298/FIN-2012007-01
From kanterella
Jump to navigation
Jump to search
Finding | |
|---|---|
| Title | Failure to Adequately Analyze Seismic Requirements for Service Water instrument Rack |
| Description | The team identified a Green noncited violation of 10 CFR Part 50, Appendix B, Criterion III, Design Control, which states, in part, measures shall be established to assure that applicable regulatory requirements and the design basis are correctly translated into specifications, drawings, procedures, and instructions. Specifically, prior to March 8, 2012, the licensee failed to incorporate the seismic/barge impact loadings using a +Y (vertical up) component in combination with the lateral loads, which would result in the highest concrete anchor bolt interaction, into Calculation NEDC 12-20 for the service water instrument rack. Also, the calculation incorrectly utilized a factor of safety of four for the anchor bolts, where as the Updated Safety Analysis Report, Appendix C 2, Section 2.10, specified a factor of safety of five. This finding was entered into the licensee\'s corrective action program as Condition Report CR-CNS-2012-01665. The team determined that the failure to incorporate the seismic/barge impact loadings using a +Y (vertical up) component in combination with the lateral loads into calculation NEDC 12-20, and using an incorrect safety factor for the instrument rack anchor bolts was a performance deficiency. This finding was more than minor because it was associated with the design control attribute of the Mitigating Systems Cornerstone and adversely affected the cornerstone objective of ensuring the availability, reliability, and capability of systems that respond to initiating events to prevent undesirable consequences. In accordance with NRC Inspection Manual Chapter 0609, Attachment 4, Phase 1 - Initial Screening and Characterization of Findings, the issue was determined to have very low safety significance (Green) because it was a design deficiency confirmed not to result in loss of operability or functionality. Specifically, the licensee revised the associated calculations to include the correct required standards, and the calculation was acceptable. This finding was determined to have a crosscutting aspect in the area of human performance, associated with the work practices component because the iicensee did not ensure that supervisory or management oversight of the work activities, including contractors, were such that nuclear safety was supported. |
| Site: | Cooper |
|---|---|
| Report | IR 05000298/2012007 Section 1R21 |
| Date counted | Jun 30, 2012 (2012Q2) |
| Type: | NCV: Green |
| cornerstone | Mitigating Systems |
| Identified by: | NRC identified |
| Inspection Procedure: | IP 71111.21 |
| Inspectors (proximate) | V Ferrarini R Kopriva T Farnholtz S Garchow R Latta B Correll G Morris M Williams |
| CCA | H.2, Field Presence |
| INPO aspect | LA.2 |
| ' | |
Finding - Cooper - IR 05000298/2012007 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Finding List (Cooper) @ 2012Q2
Self-Identified List (Cooper)
| ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||