ML23006A268

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: ML23006A264 ML23006A266 ML23006A267 ML23006A268 ML23006A270 ML23006A274
References
EPID L-2021-LLA-0053, 5018101, CAC 001028
Download: ML23006A268 (1)

Text

Holtec Letter 5018101 Attachment 4 Design Features 3.0 TABLE 3-1 List of ASME Code Alternatives for Multi-Purpose Canisters (MPCs)

MPC Closure NB-5230 Radiographic (RT) or Root (if more than one weld pass is Ring, Vent and ultrasonic (UT) required) and final liquid penetrant Drain Cover examination required. examination to be performed in Plate Welds 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 NB-5230 Radiographic (RT) or Only progressive liquid penetrant (PT)

Shell Weld ultrasonic (UT) examination is permitted. PT examination required. examination will include the root and final weld layers and each approx. 3/8" of weld depth.

Certificate of Compliance No. 1032 Amendment No. 76 Appendix B 3-7 1 of 1