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Forwards Insp Rept 50-260/89-31 on 890426-0628.No violations noted.Open issues re dynamic model of reactor pressure vessel,including internals & supports,which incorrectly assumed existence of seismic restraints noted in rept.

Accession Number: ML20247H523

Date Released: Thursday, September 17, 2020

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• ML20247H518 - Forwards Insp Rept 50-260/89-31 on 890426-0628.No violations noted.Open issues re dynamic model of reactor pressure vessel,including internals & supports,which incorrectly assumed existence of seismic restraints noted in rept. (4 page(s), 7/17/1989)
• ML20247H530 - Insp Rept 50-260/89-31 on 890426-0628.Open issues noted. Major areas inspected:design calculations for seismic design program,including generation & transfer of seismic loads & impact evaluation of primary sys. (11 page(s), 7/13/1989)