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Responds to violation noted in Audit Rept 99900054/85-01 on 850930-1004.Part 21 File 84-01 inadequately evaluated.Disc collar failure for 3707RA safety valves isolated event.Rev 1 to Product Engineering Rept SV-221 encl.

Accession Number: ML20153B980

Date Released: Monday, October 28, 2024

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• ML20153B977 - Responds to violation noted in Audit Rept 99900054/85-01 on 850930-1004.Part 21 File 84-01 inadequately evaluated.Disc collar failure for 3707RA safety valves isolated event.Rev 1 to Product Engineering Rept SV-221 encl. (4 page(s), 2/10/1986)
• ML20153C005 - Rev 1 to "3707RA Disc Collar Failure,Diablo Canyon Unit 2." (27 page(s), 1/29/1986)