Evaluation and Results cont'd

DOE-STD-3007-93

fuel assemblies. Current inventory fuel storage maps indicate that no more than three assemblies

are stored per bucket. Since only three fuel assemblies are stored per bucket, a more realistic

configuration is given at the bottom of Figure 9. As shown in this case, the fuel assemblies are

arranged in a staggered configuration. The result calculated in this case yields an effective

multiplication factor of keff+ 2s = 0.9340, which is within the ICCP acceptance criteria.

A revision to the current technical specification, TS/S 4.6A1, will allow only three

assemblies per bucket when stored on the basin floor. This revision will redefine approved

storage to allow these buckets to be stored on the floor of a storage channel with no spacing

restriction between buckets.

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