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Requests exemption from GDC 4 to apply leak before break concept to eliminate postulated pipe breaks in Class 1 accumulator injection lines from structural design basis. Basis provided in WCAP-10537.Rept withheld (ref 10CFR2.790).

Accession Number: ML19269A286

Date Released: Friday, October 25, 2024

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• ML20092H669 - Requests exemption from GDC 4 to apply leak before break concept to eliminate postulated pipe breaks in Class 1 accumulator injection lines from structural design basis. Basis provided in WCAP-10537.Rept withheld (ref 10CFR2.790). (9 page(s), 6/18/1984)
• ML20092H681 - Requests withholding proprietary info per 10CFR2.790. Affidavit CAW-83-80 encl. (6 page(s), 5/4/1984)
• ML20092H691 - "Technical Basis for Eliminating Class 1 Accumulator Line Rupture as Structural Design Basis for Catawba Units 1 & 2." (93 page(s), 4/30/1984)