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Requests NRC approval to delay mod of dampers in control room emergency ventilation sys outside air supply lines by 1 yr until 1989 refueling outage.Delay due to possible unreviewed safety question re relocation of damper.W/encl.

Accession Number: ML20148M966

Date Released: Monday, October 28, 2024

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• ML20148M960 - Requests NRC approval to delay mod of dampers in control room emergency ventilation sys outside air supply lines by 1 yr until 1989 refueling outage.Delay due to possible unreviewed safety question re relocation of damper.W/encl. (2 page(s), 3/31/1988)
• ML20148M987 - "Safety Evaluation of Emergency Ventilation Sys Design Mods." (139 page(s), 3/15/1988)