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The inspectors identified a finding of hav … The inspectors identified a finding of having very low safety significance (Green) for failure to perform checks at the beginning of each shift on the main hoist limit switches of the refueling area crane (HE 2) in the spent fuel pool area as specified in ANSI B30.2 1976, Overhead and Gantry Cranes, section 2-2.1.2 Frequent Inspections a.2, prior to using the crane to perform dry fuel storage activities on June 29, 2009. The failure to perform checks on the main hoist limit switches at the beginning of each work shift is a performance deficiency because the dry cask personnel used the crane to perform dry cask storage operations to lift items over the spent fuel pool without performing the required checks per shift change. The inspectors determined that the performance deficiency was more than minor in accordance with Inspection Manual Chapter 0612, Appendix B, Issue Screening, minor question 2 because if left uncorrected the performance deficiency could lead to a more significant safety issue. Specifically, the main hoist limit switches are installed to limit the main hoist travel and to prevent a two blocking event. Preventing two blocking events ensures safe load handling of heavy loads over the spent fuel pool. Using the NRC Manual Chapter 0609, Phase 1 screening worksheet under the Barrier Cornerstone for spent fuel pool issues, the finding screened as having very low safety significance because it did not result in loss of cooling to the spent fuel pool, did not cause damage to the fuel cladding or result in dropped fuel assembly or result in a loss of spent fuel pool volume of greater than 10 percent. The finding had a crosscutting aspect in human performance because the licensee failed to provide a complete and accurate procedure to assure nuclear safety (H.2 (c))ocedure to assure nuclear safety (H.2 (c)) +
23:59:59, 30 September 2009 +
23:59:59, 30 September 2009 +
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03:08:05, 30 May 2018 +
23:59:59, 30 September 2009 +
Failure to Perform Checks at the Beginning of Each Work Shift on the Main Hoist Limit Switches +