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Forwards F Rosa 871005 memo to EG Tourigny addressing concern raised in author 861104 rept on 10CFR50.59 mod of safety-related instrument power supply.Encl evaluation addressed concerns re reduced safety margins.

Accession Number: ML17221A453

Date Released: Sunday, November 8, 2020

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• ML17221A452 - Forwards F Rosa 871005 memo to EG Tourigny addressing concern raised in author 861104 rept on 10CFR50.59 mod of safety-related instrument power supply.Encl evaluation addressed concerns re reduced safety margins. (2 page(s), 10/13/1987)
• ML20235R541 - Responds to request for review of safety-related instrument power supply mod & determination if unresolved safety question involved.NRC believes 7.5 kV replacement inverter adequate & mod meets capacity requirements of GDC 17. (2 page(s), 10/5/1987)