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Forwards faxes from GE re ABWR PRA review,w/respect to Open Item 19.1.6.4-3 on fire rated barriers,explanation of GE not generating importance measures for ABWR fire analysis,final control bldg flooding event tree & changes to App 19K.

Accession Number: ML20045J155

Date Released: Saturday, November 7, 2020

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• ML20045J154 - Forwards faxes from GE re ABWR PRA review,w/respect to Open Item 19.1.6.4-3 on fire rated barriers,explanation of GE not generating importance measures for ABWR fire analysis,final control bldg flooding event tree & changes to App 19K. (1 page(s), 6/30/1993)
• ML20045J163 - Forwards final control bldg flooding event tree,noting that anti-siphon capability part of design of RSW sys on both supply & return lines. (2 page(s), 6/24/1993)
• ML20045J176 - Responds to NRC questions re generation of minimal cut sets in performing ABWR fire risk analysis & justification for why GE did not use important measures to analyze features from standpoint of fire risk. (1 page(s), 6/23/1993)
• ML20045J207 - Requests response on acceptability of attached resolution for Open Item 19.1.6.4-3,w/regard to personnel access & egress routes for fire suppression activities. (2 page(s), 6/1/1993)
• ML20045J224 - Forwards revised sections of 19K.5 & 19K.11.7 for ABWR SSAR.Sections reflect changes in PRA input to RAP re seismic analysis. (4 page(s), 6/17/1993)