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Forwards response to NRC Bulletin 90-002 re BWR problems w/excessive channel box bow resulting in loss of thermal margin.Encl B providing methodology to determine channel bow critical power ratio adjustment withheld (ref 2.790).

Accession Number: ML17202L212

Date Released: Tuesday, March 2, 2021

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• ML17202L211 - Forwards response to NRC Bulletin 90-002 re BWR problems w/excessive channel box bow resulting in loss of thermal margin.Encl B providing methodology to determine channel bow critical power ratio adjustment withheld (ref 2.790). (12 page(s), 4/26/1990)