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Discusses NRC 791101 meeting w/representatives of NSSS vendors & fuel suppliers re discussion of respective portions of ECCS evaluation models dealing w/fuel cladding swelling & incidence of rupture.Vendor responses encl.

Accession Number: ML100321031

Date Released: Thursday, October 24, 2024

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• ML100321029 - Discusses NRC 791101 meeting w/representatives of NSSS vendors & fuel suppliers re discussion of respective portions of ECCS evaluation models dealing w/fuel cladding swelling & incidence of rupture.Vendor responses encl. (2 page(s), 11/9/1979)
• ML20150F420 - Responds to NRC 791101 request re noncompliance of Westinghouse ECCS evaluation model under requirements of 10CFR50 App K.Evaluation of three fuel rod models indicates no safety problems for Westinghouse plants. (5 page(s), 11/2/1979)
• ML19260B535 - Responds to NRC 791101 request re ORNL cladding swelling & rupture data.Review of analytical models & tests indicates compliance w/10CFR50 App K.All GE specs for calculated peak cladding temp remain unchanged. (2 page(s), 12/7/1979)
• ML19260B583 - Forwards response to NRC 791101 request re rod burst test data.Concludes that data properly represented by fuel models used in vendor evaluation models & that analyses demonstrate all criteria of 10CFR50.46 satisfied. (5 page(s), 11/2/1979)
• ML19260B610 - Forwards addl info re evaluation of impact of NRC proposed rupture/blockage model used in vendor evaluation model. No adverse impact from new rupture burst data or use of NRC rupture/blockage model on licensing calculation results. (22 page(s), 11/4/1979)