ML21223A049

Attachment 3: HI-STORM 100 Amendment 16 Certificate of Compliance Appendix D, Changed Pages (non-proprietary)

ML21223A049
Person / Time
Site:	Holtec
Issue date:	08/11/2021
From:	Holtec
To:	Office of Nuclear Material Safety and Safeguards
Shared Package
ML21223A045	List: ML21223A046 ML21223A048 ML21223A049 ML21223A050 ML21223A056
References
5014931, EPID L-2021-LLA-0039
Download: ML21223A049 (1)

Text

Holtec Letter 5014931 Attachment 3 Approved Contents 2.0 TABLE 2.4-5a MPC-32M HEAT LOAD DATA for UNVENTILATED OVERPACK Note 3 Number of Regions: 2 Number of Storage Cells: 32 Maximum Total Heat Load (kW): 25 Maximum Section Heat Load (kW): 3.125 Region No. Decay Heat Limit per Number of Cells per Decay Heat Limit per Region, (Note 1) Cell, kW (Note 2) Region kW 1 (Inner) 0.781 12 9.375 2 (Outer) 0.781 20 15.625 Note 1: Figure 2.1-1 identifies the cell locations. The inner region consists of cells 7, 8,12 through 15,18 through 21, 25 and 26. The outer region is maintained by all other cell locations.

Note 2: Heat load limits provided in this table are for reference length fuel assemblies (144 in.

active length). Maximum total heat load, maximum quadrant heat load and specific cell heat load limits may need to be adjusted in accordance with Section 2.4.4.

TABLE 2.4-5b MPC-32M REQUIREMENTS ON DEVELOPING REGIONALIZED HEAT LOAD PATTERNS for UNVENTILATED OVERPACK (See Figure 2.1-1)

1. Total MPC aggregate Heat Load must be equal to 25 kW

2. Maximum Section Heat Load must be equal to 3.125 kW, calculated as defined in Table 2.4-6, and pattern must be 1/8th symmetric

3. Maximum Heat Load per Cell in Region 1 is 0.781 kW

4. Maximum Heat Load per Cell in Region 2 is 1.562 kW

5. Pattern-specific Heat Loads in a storage cell may need to be adjusted to meet items 1 and 2

6. Pattern-specific Heat Load for storage cells may be determined by reducing the allowable heat load in any Region 1 cell in Table 2.4-5a by a certain amount () and adding the same to a single cell or distributed amongst multiple cells in Region 2. i.e. Any reduction of total allowable heat load in Region 1 must be compensated by an equivalent addition in Region 2.

General Notes -

1. Any assembly with a Heat Load less than the limits defined above can be loaded in the applicable cell, provided it meets all other CoC requirements.

2. DFCs/DFIs are permitted in locations denoted in Table 2.4-7 with the applicable Heat Load penalties identified therein.

Certificate of Compliance No. 1014 Proposed Amendment No. 16A Appendix D 2-18 Page 1 of 1