05000321/FIN-2012003-02
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Finding | |
|---|---|
| Title | Mispositioning and subsequent failure of Hatch Unit 1 reactor control rod blade |
| Description | A self revealing non-cited violation of 10 CFR 50, Appendix B, Criterion V. Instructions, Procedures, and Drawings, was identified for failure to accomplish 2004 control rod blade movements for the Unit 1 reactor in accordance with prescribed procedures. Corrective actions taken by the licensee included replacing a control rod blade (CRB) with a new blade, and changing Procedure 42FH-ERP-001-0, Control Rod Blade Unlatching, Installation, Removal and Exchange to require peer checks, independent verification, and serial number verification for all future CRB movements. This violation has been entered into the licensees corrective action program as CR 193771. Failure to accomplish the CRB shuffle in accordance with prescribed procedures is a performance deficiency. Specifically, during the 2004 CRB shuffle, three CRBs were installed in positions different from the position required by Procedure 42FH-ERP- 001-0, Control Rod Blade Unlatching, Installation, Removal and Exchange. The performance deficiency affects the Mitigating Systems Cornerstone and was determined to be more-than-minor because this issue is similar to IMC 0612, Appendix E, example 4.c, not minor if the retest revealed that the data was actually outside of the acceptable range. This finding was assessed using IMC 0609 Attachment 4, Phase 1 - Initial Screening and Characterization of Findings. The inspectors determined the finding screened as Green per Table 4a because all the screening questions under the Mitigating Systems column were answered No. Because the procedure was implemented in 2004, the performance deficiency occurred outside the past three years and no cross-cutting aspect is assigned. |
| Site: | Hatch  |
|---|---|
| Report | IR 05000321/2012003 Section 4OA2 |
| Date counted | Jun 30, 2012 (2012Q2) |
| Type: | NCV: Green |
| cornerstone | Mitigating Systems |
| Identified by: | Self-revealing |
| Inspection Procedure: | IP 71152 |
| Inspectors (proximate) | F Ehrhardt P Higgins S Sandal G Gardner E Morris T Lighty D Hardage |
| INPO aspect | |
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Finding - Hatch - IR 05000321/2012003 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Finding List (Hatch) @ 2012Q2
Self-Identified List (Hatch)
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