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Forwards safety evaluation re util requests for approval of use of increased cumulative usage factor.Pipe breaks need not be postulated in pressurizer surge line & in SI injection lines.Small bore piping should be provided.

Accession Number: ML20207K105

Date Released: Saturday, August 8, 2020

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• ML20207K099 - Forwards safety evaluation re util requests for approval of use of increased cumulative usage factor.Pipe breaks need not be postulated in pressurizer surge line & in SI injection lines.Small bore piping should be provided. (2 page(s), 12/31/1986)
• ML20207K108 - Safety evaluation re cumulative usage factor criterion for pipe break postulation.Proposal not to postulate pipe breaks for SI injection lines & pressurizer surge line approved, pending resolution of confirmatory item re vibratory stress. (5 page(s), 12/31/1986)