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Responds to request for assessment of causes & possible consequences of control rod sys failure.Rept on 800628 partial failure to SCRAM event prepared by Ofc for Analysis & Evaluation of Operational Data encl.

Accession Number: ML18025B173

Date Released: Friday, November 6, 2020

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• ML18025B171 - Responds to request for assessment of causes & possible consequences of control rod sys failure.Rept on 800628 partial failure to SCRAM event prepared by Ofc for Analysis & Evaluation of Operational Data encl. (156 page(s), 10/23/1980)
• ML18025B174 - Requests Commission assessment of causes of 800628 event & possible consequences had control rod failures occurred during full power operation & following design basis event. (8 page(s), 7/16/1980)
• ML19339A773 - Re-requests Commission assessment of 800628 vent,requested in 800716 ltr.Concerned that delay is result of NRC inability to calculate consequences of failures that might occur following transients at full power. (1 page(s), 9/17/1980)