05000250/FIN-2012003-01
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Finding | |
|---|---|
| Title | Failure to Perform an Analysis for the Permanent Removal of Main Steam Pipe Whip Restraints |
| Description | The inspectors identified a non-cited violation (NCV) of 10 CFR Part 50, Appendix B, Criterion III, Design Control, for the licensees failure to perform an analysis for the removal of the Unit 3 main steam pipe whip restraints. These restraints are credited for mitigating high energy line breaks with a potential consequence of an unrestrained pipe break outside of containment. The licensee entered the issue into the corrective program as action request AR1757120 and revised the modification package to reinstall the pipe whip restraints prior to Unit 3 start-up. The team determined that the licensees failure to perform an analysis, as required by procedure ENG-QI 1.0, Design Control, for the permanent removal of main steam pipe whip restraints is a performance deficiency. The performance deficiency was more than minor because it affected the Mitigating Systems cornerstone attribute to ensure the availability and capability of systems that respond to initiating events to prevent undesirable consequences. Specifically, the lack of pipe whip restraints would adversely affect the capability of equipment required to mitigate high energy line break events. The team screened the finding in accordance with IMC 0609, Significance Determination Process, Attachment 4, Phase 1-Initial Screening and Characterization of Findings, and determined the finding was of very low safety significance because it was a design deficiency confirmed not to result in a loss of safety function, since the deficiency was identified and corrected before the modification was implemented. The team identified a crosscutting aspect in the decision making component of the human performance area. |
| Site: | Turkey Point  |
|---|---|
| Report | IR 05000250/2012003 Section 1R17 |
| Date counted | Jun 30, 2012 (2012Q2) |
| Type: | NCV: Green |
| cornerstone | Mitigating Systems |
| Identified by: | NRC identified |
| Inspection Procedure: | IP 71111.17 |
| Inspectors (proximate) | A Alen D Jones J Dymek J Stewart M Barillas M Speck P Braxton R Hamilton R Patterson R Williams T Su W Pursley |
| CCA | H.14, Conservative Bias |
| INPO aspect | DM.2 |
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Finding - Turkey Point - IR 05000250/2012003 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Finding List (Turkey Point) @ 2012Q2
Self-Identified List (Turkey Point)
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