ML23006A268

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Attachment 4: HI-STORM FW Amendment 7 Certificate of Compliance Appendix B, Changed Pages (Non-Proprietary)
ML23006A268
Person / Time
Site: 07201032
Issue date: 01/06/2023
From:
Holtec
To:
Office of Nuclear Material Safety and Safeguards
Shared Package
ML23006A263 List:
References
EPID L-2021-LLA-0053, 5018101, CAC 001028
Download: ML23006A268 (1)


Text

Design Features 3.0 Certificate of Compliance No. 1032 Amendment No. 76 Appendix B 3-7 TABLE 3-1 List of ASME Code Alternatives for Multi-Purpose Canisters (MPCs)

MPC Closure Ring, Vent and Drain Cover Plate Welds NB-5230 Radiographic (RT) or ultrasonic (UT) examination required.

Root (if more than one weld pass is required) and final liquid penetrant examination to be performed in accordance with NB-5245. The closure ring provides independent redundant closure for vent and drain cover plates.

Vent and drain port cover plate welds are helium leakage tested. As an alternative, the helium leakage test does not have to be performed if the REDUNDANT PORT COVER DESIGN is used.

MPC Lid to Shell Weld NB-5230 Radiographic (RT) or ultrasonic (UT) examination required.

Only progressive liquid penetrant (PT) examination is permitted. PT examination will include the root and final weld layers and each approx. 3/8" of weld depth.

Holtec Letter 5018101 Attachment 4 1 of 1