ML21068A370

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HI-STORM 100 Amendment 16 Certificate of Compliance, Appendix D
ML21068A370
Person / Time
Site: Holtec
Issue date: 03/09/2021
From:
Holtec
To:
Office of Nuclear Material Safety and Safeguards
Shared Package
ML21068A360 List:
References
5014917
Download: ML21068A370 (9)
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Attachment 8 of Holtec Letter 5014917 TABLE OF CONTENTS 1.0 DEFINITIONS ......................................................................................................... 1-1 2.0 APPROVED CONTENTS ....................................................................................... 2-1 2.1 Fuel Specification and Loading Conditions ......................................................... 2-1 2.2 Violations ............................................................................................................ 2-1 2.3 Not Used............................................................................................................. 2-1 2.4 Decay Heat, Burnup & Cooling Time Limits for ZR Clad Fuel .......................... 2-13 Table 2.1-1 Fuel Assembly Limits for MPC-32M in HI-STORM 100S Version E ..... 2-2 Table 2.1-2 PWR Fuel Assembly Characteristics ................................................... 2-6 Table 2.1-3 Non-Fuel Hardware Cooling and Average Burnup ............................. 2-10 Table 2.1-4 Burnup and Cooling Time Fuel Qualification for MPC-32M ............... 2-11 Table 2.4-1 Allowable Heat Load and Soluble Boron Requirement for MPC-32M........................................................................................... 2-15 Table 2.4-2 Maximum Allowable Decay Heat Loads for MPC-32M ...................... 2-16 Table 2.4-3 MPC-32M Fuel Storage Regions ................................................. ..2-17 Table 2.4-4 MPC-32M Fuel Storage Quadrants ................................................ 2-17 Table 2.4-5a MPC-32M Heat Load Data for UNVENTILATED OVERPACK .... ..2-18 Table 2.4-5b MPC-32M Requirements on Developing Regionalized Heat Load Patterns for UNVENTILATED OVERPACK ................................... 2-18 Table 2.4-6 Section Heat Load Calculations for MPC-32M for UNVENTILATED OVERPACK ...................................................... 2-19 Table 2.4-7 DFC and DFI Storage Locations with Heat Load Penalties for MPC-32M for UNVENTILATED OVERPACK ................................ 2-19 Figure 2.1-1 Cell Identification for MPC-32M ......................................................... 2-12 Figure 2.4-1 Discrete Pattern A per Cell Allowable Heat Loads- MPC-32M ....... 2-2018 Figure 2.4-2 Discrete Pattern A per Cell Allowable Heat Loads- MPC-32M ....... 2-2119 3.0 DESIGN FEATURES .............................................................................................. 3-1 3.1 Site ..................................................................................................................... 3-1 3.2 Design Features Important for Criticality Control ................................................ 3-1 3.3 Codes and Standards ......................................................................................... 3-2 3.4 Site Specific Parameters and Analyses for HI-STORM 100S Version E ............ 3-9 3.5 Cask Transfer Facility ....................................................................................... 3-13 3.6 Forced Helium Dehydration System ................................................................. 3-16 3.7 Supplemental Cooling System.......................................................................... 3-18 3.8 Combustible Gas Monitoring During MPC Lid Welding and Cutting ................. 3-19 3.9 Environmental Temperature Requirements ...................................................... 3-19 Table 3-1 List of ASME Code Alternatives for HI-STORM Multi-Purpose Canisters (MPCs)..................................................................................................... 3-3 Table 3-2 Load Combinations and Service Condition Definitions for the CTF Structure ........................................................................................ 3-15 Certificate of Compliance No. 1014 Amendment No. 15 Appendix D i 1 of 9

Attachment 8 of Holtec Letter 5014917 Approved Contents 2.0 2.0 APPROVED CONTENTS 2.1 Fuel Specifications and Loading Conditions

a. UNDAMAGED FUEL ASSEMBLIES, DAMAGED FUEL ASSEMBLIES, FUEL DEBRIS, and NON-FUEL HARDWARE meeting the limits specified in Table 2.1-1 and other referenced tables may be stored in the HI-STORM 100S Version E in MPC-32M.
b. For MPCs partially loaded with stainless steel clad fuel assemblies, all remaining fuel assemblies in the MPC shall meet the decay heat generation limit for the stainless steel clad fuel assemblies.
c. INTACT FUEL ASSEMBLIES, UNDAMAGED FUEL ASSEMBLIES, DAMAGED FUEL ASEMBLIES, FUEL DEBRIS and NON-FUEL HARDWARE meeting the limits specified in Appendix B Table 2.1-1 and other referenced Appendix B tables for MPC-24/24E/24EF/32/32F/68/68F/68FF/68M may be stored in the applicable MPC in the HI-STORM 100S Version E.
d. INTACT FUEL ASSEMBLIES, UNDAMAGED FUEL ASSEMBLIES, FUEL DEBRIS, DAMAGED FUEL ASSEMBLIES and NON-FUEL HARDWARE meeting the limits specified in Appendix B Table 2.1-1 and other referenced Appendix B tables for the MPC-68 may be stored in the MPC-68 version 1 in the HI-STORM 100S Version E.
e. INTACT FUEL ASSEMBLIES, UNDAMAGED FUEL ASSEMBLIES, FUEL DEBRIS, DAMAGED FUEL ASSEMBLIES and NON-FUEL HARDWARE meeting the limits specified in Appendix B Table 2.1-1 and other referenced Appendix B tables for the MPC-32 may be stored in the MPC-32 version 1 in the HI-STORM 100 Version E.

2.1.2 Fuel Loading Fuel assembly decay heat limits and other restrictions related to DAMAGED FUEL, FUEL DEBRIS, and NON-FUEL HARDWARE are specified in Section 2.4.

Cell identification for MPC-32M is in Figure 2.1-1.

2.2 Violations If any Fuel Specifications or Loading Conditions of 2.1 are violated, the following actions shall be completed:

2.2.1 The affected fuel assemblies shall be placed in a safe condition.

2.2.2 Within 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />, notify the NRC Operations Center.

2.2.3 Within 30 days, submit a special report which describes the cause of the violation, and actions taken to restore compliance and prevent recurrence.

2.3 Not Used Certificate of Compliance No. 1014 Amendment No. 15 Appendix D 2-1 2 of 9

Attachment 8 of Holtec Letter 5014917 Approved Contents 2.0 Table 2.1-4 BURNUP AND COOLING TIME FUEL QUALIFICATION FOR MPC-32M Cell Decay Heat Load Polynomial Coefficients, see Paragraph 2.II.1.5.2 Limit (kW)

(Notes 1, 2, 3) A B C D 0.83 6.57083E-14 -4.02593E-09 1.47107E-04 8.01647E-01 0.83 < decay heat 1.25 4.11020E-14 -4.62813E-09 2.17444E-04 -5.55545E-01 1.25 < decay heat 1.46 1.21147E-14 -1.08013E-09 8.66361E-05 4.04455E-01 1.46 < decay heat 1.81 3.82652E-15 -2.38729E-10 4.75134E-05 6.36443E-01 1.81 < decay heat 3.26 3.76103E-16 4.83486E-11 1.74805E-05 6.53455E-01 The burnup and cooling time for every fuel loaded into the MPC-32M must satisfy the following equation:

= 3 + 2 + +

where, Ct = Minimum cooling time (years),

Bu = Assembly-average burnup (MWd/mtU),

A, B, C, D = Polynomial coefficients listed in Table 2.1-4 Notes:

1. Decay heat per fuel assembly is presented
2. A decay heat value that is equal to or greater than the appropriate decay heat load limit 2.3. The polynomial coefficients associated for decay heat load 1.81 < decay heat 3.26 are applied to the UNVENTILATED OVERPACK MPC-32M decay heat load range of 0.83 < decay heat 3.26 Certificate of Compliance No. 1014 Amendment No. 15 Appendix D 2-11 3 of 9

Attachment 8 of Holtec Letter 5014917 Approved Contents 2.0 2.4 Decay Heat Limits For MPC-24/24E/24EF/32/32F/68/68F/68FF/68M decay heat, burnup, and cooling time limits from Appendix B Section 2.4 apply for ZR clad fuel. Decay heat limits from Appendix B Table 2.1-1 apply for SS clad fuel.

For MPC-32 Version 1 decay heat, burnup and cooling time limits for MPC-32 from Appendix B Section 2.4 apply for ZR clad fuel. Decay heat limits for MPC-32 from Appendix B Table 2.1-1 apply for SS clad fuel.

For MPC-68 Version 1 decay heat, burnup and cooling time limits for MPC-68 from Appendix B Section 2.4 apply for ZR clad fuel. Decay heat limits for MPC-68 from Appendix B Table 2.1-1 apply for SS clad fuel.

Decay heat limits for ZR clad for storage in MPC-32M in HI-STORM 100S Version E are provided in the following subsections. Burnup and cooling time limits for the MPC-32M are provided in Table 2.1-4.

2.4.1 Regionalized Fuel Loading Decay Heat Limits for ZR-Clad Fuel for MPC-32M for a VENTILATED OVERPACK The maximum allowable decay heat per fuel storage location for intact fuel assemblies in regionalized loading is determined using the following equations:

Q(X) = 2 x Q0 / (1 + Xy) y = 0.23 / X0.1 q2 = Q(X) / (n1 x X +n2) q1 = q 2 x X Where:

Q0 = Maximum uniform storage MPC decay heat (38 kW)

X = Inner region to outer region assembly decay heat ratio (0.5 X 3) n1 = Number of storage locations in inner region from Table 2.4-3.

n2 = Number of storage locations in outer region from Table 2.4-3.

Allowable heat loads for Damaged Fuel and Fuel Debris are shown in Table 2.4-1. Allowable storage locations for Damaged Fuel in DFIs and Damaged Fuel or Fuel Debris in DFCs are shown in Table 2.4-1. Cell heat load limits and total heat load limits may need to be adjusted in accordance with Section 2.4.4.

2.4.2 Discrete Loading Pattern Decay Heat Limits for ZR-Clad Fuel in MPC-32M for a VENTILATED OVERPACK Discrete decay heat loading patterns (Patterns A and B) for MPC-32M are shown in Figures 2.4-1 and 2.4-2. Figures 2.4-1 and 2.4-2 provide the maximum allowable decay heat loads per fuel storage location. Table 2.4-2 provides the maximum total allowable decay heat load and maximum Certificate of Compliance No. 1014 Amendment No. 15 Appendix D 2-13 4 of 9

Attachment 8 of Holtec Letter 5014917 Approved Contents 2.0 allowable quadrant decay heat load for Figures 2.4-1 and 2.4-2. Cell heat load limits, quadrant heat load limits and total heat load limit may need to be adjusted in accordance with Section 2.4.4.

2.4.3 When complying with the maximum fuel storage location decay heat limits, users must account for the decay heat from both the fuel assembly and any NON-FUEL HARDWARE, as applicable for the particular fuel storage location, to ensure the decay heat emitted by all contents in a storage location does not exceed the limit.

2.4.4 Variable Fuel Height for MPC-32M 2.4.4.1 For fuel with a longer active fuel length than the reference fuel (144 in), the total heat load, quadrant heat load limits and specific heat load limits in each cell, may be increased by the ratio SQRT(L/144), where L is the active length of the fuel in inches.

2.4.4.2 For fuel with a shorter active fuel length than the reference fuel (144 in), the total heat load, quadrant heat load limits and specific heat load limits in each cell, shall be reduced linearly by the ratio L/144, where L is the active fuel length of the fuel in inches.

2.4.5 Decay Heat Limits for MPC-32M for the UNVENTILATED OVERPACK Tables 2.4-5a and 2.4-5b provide the maximum allowable decay heat per fuel storage location for MPC-32M for UNVENTILATED OVERPACK.

A minor deviation from the prescribed loading pattern in an MPCs permissible contents to allow one slightly thermally-discrepant fuel assembly per quadrant to be loaded as long as the peak cladding temperature for the MPC remains below the ISG-11 Rev 3 requirements is permitted for essential dry storage campaigns to support decommissioning.

Certificate of Compliance No. 1014 Amendment No. 15 Appendix D 2-14 5 of 9

Attachment 8 of Holtec Letter 5014917 Approved Contents 2.0 Table 2.4-3 MPC-32M Fuel Storage Regions Number of Storage Cells Storage Cell IDs Note 1 MPC Inner Region Outer Region (n1) (n2) Inner Region Outer Region 7, 8, 12 through 15, All other MPC-32M 12 20 18 through locations 21, 25 and 26

1. See Figure 2.1-1 for storage cell numbering for MPC-32M.

Table 2.4-4 MPC-32M Fuel Storage Quadrants Quadrant Storage Cell IDs Note 1 1 3, 4, 8, 9, 10, 14, 15, 16 20, 21, 22, 26, 27, 28, 31, 2

32 17, 18, 19, 23, 24, 25, 29, 3

30 4 1, 2, 5, 6, 7, 11, 12, 13

1. See Figure 2.1-1 for storage cell numbering for MPC-32M.

Certificate of Compliance No. 1014 Amendment No. 15 Appendix D 2-17 6 of 9

Attachment 8 of Holtec Letter 5014917 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 Amendment No. 15 Appendix D 2-18 7 of 9

Attachment 8 of Holtec Letter 5014917 Approved Contents 2.0 TABLE 2.4-6 SECTION HEAT LOAD CALCULATIONS FOR MPC-32M for UNVENTILATED OVERPACK Section Equation for Section Heat Load1 Section 1 Q3 + Q4 + Q8 + 1/2Q9 + 1/2Q14 Section 2 Q10 + Q15 + Q16 + 1/2Q9 + 1/2Q14 Section 3 Q21 + Q22 + Q28 + 1/2Q20 + 1/2Q27 Section 4 Q31 + Q32 + Q26 + 1/2Q20 + 1/2Q27 Section 5 Q29 + Q30 + Q25 + 1/2Q19 + 1/2Q24 Section 6 Q17 + Q18 + Q23 + 1/2Q19 + 1/2Q24 Section 7 Q11 + Q12 + Q5 + 1/2Q6 + 1/2Q13 Section 8 Q1 + Q2 + Q7 + 1/2Q6 + 1/2Q13 Notes 1.) QX-Y is the heat load in kW in cell ID (X-Y), identified in Figure 2.1-1 TABLE 2.4-7 DFC and DFI STORAGE LOCATIONS WITH HEAT LOAD PENALTIES for MPC-32M for UNVENTILATED OVERPACK Locations/Storage Cell Heat Load DFC/DFI Min. Soluble Boron MPC Type Numbers Penalty (Note 1) Content (Note 2) (Note 3)

Appendix C Table DFI 40%

1, 2, 3, 4, 5, 10, 11, 16, 3-4 MPC-32M DFC 17, 22, 23, 28, 29, 30, 5%

Appendix C Table 31, 32 DFCs - 5%

DFC or DFI 3-6 DFIs - 40%

Note 1: Damaged fuel assemblies or fuel debris can be loaded in DFCs while only damaged fuel assemblies that can be handled by normal means can be loaded in DFIs.

Note 2: DFCs/DFIs are allowed for storage in certain basket peripheral locations as defined herein. Basket storage cell numbers are identified in Figure 2.1-1 for the MPC-32M.

Note 3: Heat load penalties are applicable to ONLY those cells where DFCs/DFIs are located and are applied to the allowable undamaged fuel assembly decay heat limit in that storage cell location. The penalties remain the same for all regionalized patterns and discrete loading patterns.

Certificate of Compliance No. 1014 Amendment No. 15 Appendix D 2-19 8 of 9

Attachment 8 of Holtec Letter 5014917 Design Features 3.0 Table 3-1 List of ASME Code Alternatives for HI-STORM Multi-Purpose Canisters (MPCs)

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

Ring, Vent and ultrasonic (UT) examination and final liquid penetrant examination to be Drain Cover required. performed in accordance with NB-5245. The Plate Welds 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

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

Certificate of Compliance No. 1014 Amendment No. 15 Appendix D 3-6 9 of 9

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