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Responds to 790727 requests that ACRS address consistency of actual component failure experience w/that projected in WASH-1400 & that ACRS determine probabilities of occurrence re Davis-Besse 770924 & Rancho Seco 780320 events.

Accession Number: ML19345B940

Date Released: Thursday, October 24, 2024

Package Contents

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• ML19350A151 - Responds to 790727 requests that ACRS address consistency of actual component failure experience w/that projected in WASH-1400 & that ACRS determine probabilities of occurrence re Davis-Besse 770924 & Rancho Seco 780320 events. (8 page(s), 2/20/1980)
• ML19345B939 - Forwards "Analysis of Feedwater Transient Sequences in B&W NSSS," to aid in formulating response to M Udall 790729 ltr. Using WASH-1400 event trees & data directly gives meaningless results. (1 page(s), 2/7/1980)
• ML19345B945 - "Analysis of Feedwater Transient Sequences in B&W NSSS." (21 page(s), 2/7/1980)
• ML19345B947 - "Evaluation of Davis-Besse & Rancho Seco Feedwater Transients on 770924 & 780320 Using WASH-1400 Data." (16 page(s), 2/20/1980)