ML23013A342

Attachment 4 - HI-STORM 100 Amendment 16 Certificate of Compliance Appendix B, Changed Pages (Non-Proprietary)

ML23013A342
Person / Time
Site:	Holtec
Issue date:	01/13/2023
From:	Holtec
To:	Office of Nuclear Material Safety and Safeguards
Shared Package
ML23013A337	List: ML23013A338 ML23013A340 ML23013A341 ML23013A342 ML23013A343 ML23013A344 ML23013A345 ML23013A346 ML23013A347
References
5014956, EPID L-2021-LLA-0039
Download: ML23013A342 (1)

Text

Holtec Letter 5014956 Attachment 4 Design Features 3.0 DESIGN FEATURES (continued)

Table 3-1 (page 5 of 9)

LIST OF ASME CODE ALTERNATIVES FOR HI-STORM 100 CASK SYSTEM Component Reference Code Alternative, Justification & Compensatory ASME Code Requirement Measures Section/Article MPC Lid to NB-5230 Radiographic (RT) Only UT or multi-layer liquid penetrant (PT)

Shell Weld or ultrasonic (UT) examination is permitted. If PT alone is used, at examination a minimum, it will include the root and final weld required layers and each approximately 3/8 inch of weld depth.

MPC NB-5230 Radiographic (RT) Root (if more than one weld pass is required)

Closure or ultrasonic (UT) and final liquid penetrant examination to be Ring, Vent examination performed in accordance with NB-5245. The and Drain required closure ring provides independent redundant Cover Plate closure for vent and drain cover plates. Vent Welds 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.

Certificate of Compliance No. 1014 Amendment No. 165 Appendix B 3-8 1 of 1