05000237/FIN-2009005-05
From kanterella
Jump to navigation
Jump to search
Finding | |
---|---|
Title | Failure to Follow the Master Refueling Procedure During Movement of Fuel Assembly JLU569 |
Description | A finding of very low safety significance and associated NCV of 10 CFR Part 50, Appendix B, Criterion V, was self-revealed for the failure to properly move a fuel assembly to its specified location, in accordance with DFP 0800-01, Master Refueling Procedure. Specifically, on November 5, 2004, fuel assembly JLU569 was placed in position C4-E5, instead of C4-F5, as required by the procedure. The violation was placed into the licensees CAP in IR 990180. As corrective action, the licensee temporarily suspended all fuel handling activities, conducted a piece count of the spent fuel and stationed a second Senior Reactor Operator on the refueling bridge as additional oversight for follow-on fuel movements. Additionally the fuel handling crew associated with the event was suspended from future fuel moves, pending remedial training. Using the guidance contained in IMC 0612, Power Reactor Inspection Reports, Appendix B, Issue Disposition Screening, dated December 4, 2008, the inspectors determined that the finding was more than minor because the finding was associated with the configuration control and human performance attributes of the Barrier Integrity Cornerstone and impacted the Barrier Integrity Cornerstone objective to provide reasonable assurance that physical design barriers (i.e., fuel cladding) protect the public from radionuclide releases caused by an accident or event. Specifically, the shutdown margin and thermal management of the spent fuel pool(s) is affected by fuel assembly placement inside the pool(s). The inspectors determined the finding could be evaluated using the significance determination process in accordance with IMC 0609, Significance Determination Process, Attachment 0609.04, Phase 1 - Initial Screening and Characterization of Findings, Table 3b, question 6, which directed the inspectors to Appendix M, Significance Determination Process Using Qualitative Criteria. Because probabilistic risk assessment tools were not well suited for this finding, the criteria for using IMC 0609, Appendix M, were met. In determining the significance of this finding, regional management reviewed the licensees bounding analysis in the UFSAR, which demonstrated that regardless of the incorrect bundle position in the fuel pool, the design of the pool still maintained pool Keff less than .95. Based on the additional qualitative circumstances associated with this finding, regional management concluded the finding was of very low safety significance (Green). This finding has a cross-cutting aspect in the area of Human Performance, Work Practices. Specifically, neither the Senior Reactor Operator (SRO), nor either of the two members of the fuel handling crew, adequately performed independent verification techniques that ensured the fuel assembly move was made in accordance with the Nuclear Component Transfer List, as required by DFP 0800-01. H.4(a |
Site: | Dresden ![]() |
---|---|
Report | IR 05000237/2009005 Section 1R20 |
Date counted | Dec 31, 2009 (2009Q4) |
Type: | NCV: Green |
cornerstone | Barrier Integrity |
Identified by: | Self-revealing |
Inspection Procedure: | IP 71111.2 |
Inspectors (proximate) | R Jickling C Moore C Phillips D Melendez Colon D Sand F Ramirez J Benjamin J Draper J Mcghee L Kozak M Holmberg M Mitchell M Ring |
CCA | H.12, Avoid Complacency |
INPO aspect | QA.4 |
' | |
Finding - Dresden - IR 05000237/2009005 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Finding List (Dresden) @ 2009Q4
Self-Identified List (Dresden)
| ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||