ML23068A425
| ML23068A425 | |
| Person / Time | |
|---|---|
| Site: | Holtec |
| Issue date: | 06/29/2023 |
| From: | Storage and Transportation Licensing Branch |
| To: | Holtec |
| Shared Package | |
| ML23068A384 | List:
|
| References | |
| CAC 001028, EPID L-2020-RNW-0007 | |
| Download: ML23068A425 (1) | |
Text
RENEWED CERTIFICATE OF COMPLIANCE NO. 1014 APPENDIX B APPROVED CONTENTS AND DESIGN FEATURES FOR THE HI-STORM 100 CASK SYSTEM AMENDMENT NO. 10 Renewed Amendment No. 10
Certificate of Compliance No. 1014 Appendix B i
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........................................................................................................... 2-2 2.3 Not Used............................................................................................................ 2-2 2.4 Decay Heat, Burnup & Cooling Time Limits for ZR Clad Fuel......................... 2-47 Figure 2.1-1 Fuel Loading Regions - MPC-24........................................................ 2-3 Figure 2.1-2 Fuel Loading Regions - MPC-24E/24EF............................................ 2-4 Figure 2.1-3 Fuel Loading Regions - MPC-32/32F................................................. 2-5 Figure 2.1-4 Fuel Loading Regions - MPC-68/68FF/68M....................................... 2-6 Table 2.1-1 Fuel Assembly Limits.......................................................................... 2-7 Table 2.1-2 PWR Fuel Assembly Characteristics................................................ 2-36 Table 2.1-3 BWR Fuel Assembly Characteristics................................................ 2-41 Table 2.1-4 Table Deleted................................................................................... 2-42 Table 2.1-5 Table Deleted................................................................................... 2-43 Table 2.1-6 Table Deleted................................................................................... 2-44 Table 2.1-7 Table Deleted................................................................................... 2-45 Table 2.1-8 Non-Fuel Hardware Cooling and Average Burnup............................ 2-45 Table 2.4-1 Maximum Allowable Decay Heat per Fuel Storage Location............ 2-46 Table 2.4-2 Fuel Storage Locations per MPC...................................................... 2-47 Table 2.4-3 PWR Fuel Assembly Cooling Time-Dependent Coefficients............. 2-50 Table 2.4-4 BWR Fuel Assembly Cooling Time-Dependent Coefficients............. 2-58 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........................................................... 3-14 3.5 Cask Transfer Facility (CTF)............................................................................ 3-18 3.6 Forced Helium Dehydration System................................................................ 3-21 3.7 Supplemental Cooling System......................................................................... 3-23 3.8 Combustible Gas Monitoring During MPC Lid Welding and Cutting................ 3-26 3.9 Environmental Temperature Requirements..................................................... 3-26 Table 3-1 List of ASME Code Alternatives for HI-STORM 100 Cask System......... 3-4 Table 3-2 Load Combinations and Service Condition Definitions for the CTF Structure....................................................................................... 3-20 Table 3-3 Requirements for Supplemental Cooling System................................. 3-25 Renewed Amendment No. 10
Definitions 1.0 Certificate of Compliance No. 1014 Appendix B 1-1 1.0 Definitions Refer to Appendix A for Definitions.
Renewed Amendment No. 10
Approved Contents 2.0 Certificate of Compliance No. 1014 Appendix B 2-1 2.0 APPROVED CONTENTS 2.1 Fuel Specifications and Loading Conditions 2.1.1 Fuel To Be Stored In The HI-STORM 100 SFSC System a.
INTACT FUEL ASSEMBLIES, 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 100 SFSC System.
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.
For MPCs partially loaded with array/class 6x6A, 6x6B, 6x6C, 7x7A, or 8x8A fuel assemblies, all remaining ZR clad INTACT FUEL ASSEMBLIES in the MPC shall meet the decay heat generation limits for the 6x6A, 6x6B, 6x6C, 7x7A and 8x8A fuel assemblies.
d.
All BWR fuel assemblies may be stored with or without ZR channels with the exception of array/class 10x10D and 10x10E fuel assemblies, which may be stored with or without ZR or stainless steel channels.
2.1.2 Uniform Fuel Loading Any authorized fuel assembly may be stored in any fuel storage location, subject to other restrictions related to DAMAGED FUEL, FUEL DEBRIS, and NON-FUEL HARDWARE specified in the CoC.
(continued)
Renewed Amendment No. 10
Approved Contents 2.0 Certificate of Compliance No. 1014 Appendix B 2-2 2.0 Approved Contents 2.1 Fuel Specifications and Loading Conditions (contd) 2.1.3 Regionalized Fuel Loading Users may choose to store fuel using regionalized loading in lieu of uniform loading to allow higher heat emitting fuel assemblies to be stored than would otherwise be able to be stored using uniform loading.
Regionalized loading is limited to INTACT FUEL ASSEMBLIES or UNDAMAGED FUEL ASSEMBLIES with ZR cladding. Figures 2.1-1 through 2.1-4 define the regions for the MPC-24, MPC-24E, MPC-24EF, MPC-32, MPC-32F, MPC-68, MPC-68FF, and MPC-68M models, respectively1. Fuel assembly burnup, decay heat, and cooling time limits for regionalized loading are specified in Section 2.4.2. Fuel assemblies used in regionalized loading shall meet all other applicable limits specified in Tables 2.1-1 through 2.1-3.
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 1
These figures are only intended to distinguish the fuel loading regions. Other details of the basket design are illustrative and may not reflect the actual basket design details.
The design drawings should be consulted for basket design details.
Renewed Amendment No. 10
Approved Contents 2.0 Certificate of Compliance No. 1014 Appendix B 2-3 Figure 2.1-1 Fuel Loading Regions - MPC-24 Renewed Amendment No. 10
Approved Contents 2.0 Certificate of Compliance No. 1014 Appendix B 2-4 Figure 2.1-2 Fuel Loading Regions - MPC-24E/24EF Renewed Amendment No. 10
Approved Contents 2.0 Certificate of Compliance No. 1014 Appendix B 2-5 Figure 2.1-3 Fuel Loading Regions - MPC-32/32F Renewed Amendment No. 10
Approved Contents 2.0 Certificate of Compliance No. 1014 Appendix B 2-6 Figure 2.1-4 Fuel Loading Regions - MPC-68/68FF/68M Renewed Amendment No. 10
Approved Contents 2.0 Certificate of Compliance No. 1014 Appendix B 2-7 Table 2.1-1 (page 1 of 29)
Fuel Assembly Limits I. MPC MODEL: MPC-24 A. Allowable Contents 1.
Uranium oxide, PWR INTACT FUEL ASSEMBLIES listed in Table 2.1-2, with or without NON-FUEL HARDWARE and meeting the following specifications (Note 1):
- a. Cladding Type:
ZR or Stainless Steel (SS) as specified in Table 2.1-2 for the applicable fuel assembly array/class.
- b. Initial Enrichment:
As specified in Table 2.1-2 for the applicable fuel assembly array/class.
- c. Post-irradiation Cooling Time and Average Burnup Per Assembly:
- i. Array/Classes 14x14D,14x14E, and 15x15G Cooling time 8 years and an average burnup 40,000 MWD/MTU.
ii. All Other Array/Classes Cooling time and average burnup as specified in Section 2.4.
ii. NON-FUEL HARDWARE As specified in Table 2.1-8.
Renewed Amendment No. 10
Approved Contents 2.0 Certificate of Compliance No. 1014 Appendix B 2-8 Table 2.1-1 (page 2 of 29)
Fuel Assembly Limits I. MPC MODEL: MPC-24 (continued)
A. Allowable Contents (continued)
- d. Decay Heat Per Fuel Storage Location:
- i. Array/Classes 14x14D, 14x14E, and 15x15G 710 Watts ii. All Other Array/Classes As specified in Section 2.4.
- e. Fuel Assembly Length:
176.8 inches (nominal design)
- f. Fuel Assembly Width:
8.54 inches (nominal design)
- g. Fuel Assembly Weight:
1720 lbs (including NON-FUEL HARDWARE) for assemblies that do not require fuel spacers, otherwise 1680 lbs (including NON-FUEL HARDWARE)
B. Quantity per MPC: Up to 24 fuel assemblies.
C. Deleted.
D. DAMAGED FUEL ASSEMBLIES and FUEL DEBRIS are not authorized for loading into the MPC-24.
E. One NSA is authorized for loading into the MPC-24.
Note 1:
Fuel assemblies containing BPRAs, TPDs, WABAs, water displacement guide tube plugs, orifice rod assemblies, or vibration suppressor inserts with or without ITTRs, may be stored in any fuel storage location. Fuel assemblies containing APSRs or NSAs may only be loaded in fuel storage locations 9, 10, 15, and/or 16. Fuel assemblies containing CRAs, RCCAs, CEAs may only be stored in fuel storage locations 4, 5, 8 - 11, 14 - 17, 20 and/or 21 (see Figure 2.1-1). These requirements are in addition to any other requirements specified for uniform or regionalized fuel loading.
Renewed Amendment No. 10
Approved Contents 2.0 Certificate of Compliance No. 1014 Appendix B 2-9 Table 2.1-1 (page 3 of 29)
Fuel Assembly Limits II. MPC MODEL: MPC-68F A. Allowable Contents 1.
Uranium oxide, BWR INTACT FUEL ASSEMBLIES, with or without ZR channels. Uranium oxide BWR INTACT FUEL ASSEMBLIES shall meet the criteria specified in Table 2.1-3 for fuel assembly array class 6x6A, 6x6C, 7x7A or 8x8A, and meet the following specifications:
- a. Cladding Type:
ZR
- b. Maximum PLANAR-AVERAGE INITIAL ENRICHMENT:
As specified in Table 2.1-3 for the applicable fuel assembly array/class.
- c. Initial Maximum Rod Enrichment:
As specified in Table 2.1-3 for the applicable fuel assembly array/class.
- d. Post-irradiation Cooling Time and Average Burnup Per Assembly:
Cooling time 18 years and an average burnup 30,000 MWD/MTU.
- e. Decay Heat Per Assembly 115 Watts
- f. Fuel Assembly Length:
135.0 inches (nominal design)
- g. Fuel Assembly Width:
4.70 inches (nominal design)
- h. Fuel Assembly Weight:
400 lbs, including channels Renewed Amendment No. 10
Approved Contents 2.0 Certificate of Compliance No. 1014 Appendix B 2-10 Table 2.1-1 (page 4 of 29)
Fuel Assembly Limits II. MPC MODEL: MPC-68F (continued)
A. Allowable Contents (continued) 2.
Uranium oxide, BWR DAMAGED FUEL ASSEMBLIES, with or without ZR channels, placed in DAMAGED FUEL CONTAINERS. Uranium oxide BWR DAMAGED FUEL ASSEMBLIES shall meet the criteria specified in Table 2.1-3 for fuel assembly array/class 6x6A, 6x6C, 7x7A, or 8x8A, and meet the following specifications:
- a. Cladding Type:
ZR
- b. Maximum PLANAR-AVERAGE INITIAL ENRICHMENT:
As specified in Table 2.1-3 for the applicable fuel assembly array/class.
- c. Initial Maximum Rod Enrichment:
As specified in Table 2.1-3 for the applicable fuel assembly array/class.
- d. Post-irradiation Cooling Time and Average Burnup Per Assembly:
Cooling time 18 years and an average burnup 30,000 MWD/MTU.
- e. Decay Heat Per Assembly:
115 Watts
- f. Fuel Assembly Length:
135.0 inches (nominal design)
- g. Fuel Assembly Width:
4.70 inches (nominal design)
- h. Fuel Assembly Weight:
550 lbs, including channels and DFC Renewed Amendment No. 10
Approved Contents 2.0 Certificate of Compliance No. 1014 Appendix B 2-11 Table 2.1-1 (page 5 of 29)
Fuel Assembly Limits II. MPC MODEL: MPC-68F (continued)
A. Allowable Contents (continued) 3.
Uranium oxide, BWR FUEL DEBRIS, with or without ZR channels, placed in DAMAGED FUEL CONTAINERS. The original fuel assemblies for the uranium oxide BWR FUEL DEBRIS shall meet the criteria specified in Table 2.1-3 for fuel assembly array/class 6x6A, 6x6C, 7x7A, or 8x8A, and meet the following specifications:
- a. Cladding Type:
ZR
- b. Maximum PLANAR-AVERAGE INITIAL ENRICHMENT:
As specified in Table 2.1-3 for the applicable original fuel assembly array/class.
- c. Initial Maximum Rod Enrichment:
As specified in Table 2.1-3 for the applicable original fuel assembly array/class.
- d. Post-irradiation Cooling Time and Average Burnup Per Assembly Cooling time 18 years and an average burnup 30,000 MWD/MTU for the original fuel assembly.
- e. Decay Heat Per Assembly 115 Watts
- f. Original Fuel Assembly Length 135.0 inches (nominal design)
- g. Original Fuel Assembly Width 4.70 inches (nominal design)
- h. Fuel Debris Weight 550 lbs, including channels and DFC Renewed Amendment No. 10
Approved Contents 2.0 Certificate of Compliance No. 1014 Appendix B 2-12 Table 2.1-1 (page 6 of 29)
Fuel Assembly Limits II. MPC MODEL: MPC-68F (continued)
A. Allowable Contents (continued) 4.
Mixed oxide (MOX), BWR INTACT FUEL ASSEMBLIES, with or without ZR channels. MOX BWR INTACT FUEL ASSEMBLIES shall meet the criteria specified in Table 2.1-3 for fuel assembly array/class 6x6B, and meet the following specifications:
- a. Cladding Type:
ZR
- b. Maximum PLANAR-AVERAGE INITIAL ENRICHMENT:
As specified in Table 2.1-3 for fuel assembly array/class 6x6B.
- c. Initial Maximum Rod Enrichment:
As specified in Table 2.1-3 for fuel assembly array/class 6x6B.
- d. Post-irradiation Cooling Time and Average Burnup Per Assembly:
Cooling time 18 years and an average burnup 30,000 MWD/MTIHM.
- e. Decay Heat Per Assembly 115 Watts
- f. Fuel Assembly Length:
135.0 inches (nominal design)
- g. Fuel Assembly Width:
4.70 inches (nominal design)
- h. Fuel Assembly Weight:
400 lbs, including channels Renewed Amendment No. 10
Approved Contents 2.0 Certificate of Compliance No. 1014 Appendix B 2-13 Table 2.1-1 (page 7 of 29)
Fuel Assembly Limits II. MPC MODEL: MPC-68F (continued)
A. Allowable Contents (continued) 5.
Mixed oxide (MOX), BWR DAMAGED FUEL ASSEMBLIES, with or without ZR channels, placed in DAMAGED FUEL CONTAINERS. MOX BWR DAMAGED FUEL ASSEMBLIES shall meet the criteria specified in Table 2.1-3 for fuel assembly array/class 6x6B, and meet the following specifications:
- a. Cladding Type:
ZR
- b. Maximum PLANAR-AVERAGE INITIAL ENRICHMENT:
As specified in Table 2.1-3 for fuel assembly array/class 6x6B.
- c. Initial Maximum Rod Enrichment:
As specified in Table 2.1-3 for fuel assembly array/class 6x6B.
- d. Post-irradiation Cooling Time and Average Burnup Per Assembly:
Cooling time 18 years and an average burnup 30,000 MWD/MTIHM.
- e. Decay Heat Per Assembly 115 Watts
- f. Fuel Assembly Length:
135.0 inches (nominal design)
- g. Fuel Assembly Width:
4.70 inches (nominal design)
- h. Fuel Assembly Weight:
550 lbs, including channels and DFC Renewed Amendment No. 10
Approved Contents 2.0 Certificate of Compliance No. 1014 Appendix B 2-14 Table 2.1-1 (page 8 of 29)
Fuel Assembly Limits II. MPC MODEL: MPC-68F (continued)
A. Allowable Contents (continued) 6.
Mixed Oxide (MOX), BWR FUEL DEBRIS, with or without ZR channels, placed in DAMAGED FUEL CONTAINERS. The original fuel assemblies for the MOX BWR FUEL DEBRIS shall meet the criteria specified in Table 2.1-3 for fuel assembly array/class 6x6B, and meet the following specifications:
- a. Cladding Type:
ZR
- b. Maximum PLANAR-AVERAGE INITIAL ENRICHMENT:
As specified in Table 2.1-3 for original fuel assembly array/class 6x6B.
- c. Initial Maximum Rod Enrichment:
As specified in Table 2.1-3 for original fuel assembly array/class 6x6B.
- d. Post-irradiation Cooling Time and Average Burnup Per Assembly:
Cooling time 18 years and an average burnup 30,000 MWD/MTIHM for the original fuel assembly.
- e. Decay Heat Per Assembly 115 Watts
- f. Original Fuel Assembly Length:
135.0 inches (nominal design)
- g. Original Fuel Assembly Width:
4.70 inches (nominal design)
- h. Fuel Debris Weight:
550 lbs, including channels and DFC Renewed Amendment No. 10
Approved Contents 2.0 Certificate of Compliance No. 1014 Appendix B 2-15 Table 2.1-1 (page 9 of 29)
Fuel Assembly Limits II. MPC MODEL: MPC-68F (continued)
A. Allowable Contents (continued) 7.
Thoria rods (ThO2 and UO2) placed in Dresden Unit 1 Thoria Rod Canisters and meeting the following specifications:
- a. Cladding Type:
ZR
- b. Composition:
98.2 wt.% ThO2, 1.8 wt. % UO2 with an enrichment of 93.5 wt. % 235U.
- c. Number of Rods Per Thoria Rod Canister:
18
- d. Decay Heat Per Thoria Rod Canister:
115 Watts
- e. Post-irradiation Fuel Cooling Time and Average Burnup Per Thoria Rod Canister:
A fuel post-irradiation cooling time 18 years and an average burnup 16,000 MWD/MTIHM.
- f. Initial Heavy Metal Weight:
27 kg/canister
- g. Fuel Cladding O.D.:
0.412 inches
- h. Fuel Cladding I.D.:
0.362 inches
- i. Fuel Pellet O.D.:
0.358 inches
- j. Active Fuel Length:
111 inches
- k. Canister Weight:
550 lbs, including fuel Renewed Amendment No. 10
Approved Contents 2.0 Certificate of Compliance No. 1014 Appendix B 2-16 Table 2.1-1 (page 10 of 29)
Fuel Assembly Limits II. MPC MODEL: MPC-68F (continued)
B. Quantity per MPC (up to a total of 68 assemblies):
(All fuel assemblies must be array/class 6x6A, 6x6B, 6x6C, 7x7A, or 8x8A):
Up to four (4) DFCs containing uranium oxide BWR FUEL DEBRIS or MOX BWR FUEL DEBRIS. The remaining MPC-68F fuel storage locations may be filled with fuel assemblies of the following type, as applicable:
- 5. Up to one (1) Dresden Unit 1 Thoria Rod Canister.
C. Fuel assemblies with stainless steel channels are not authorized for loading in the MPC-68F.
D. Dresden Unit 1 fuel assemblies with one Antimony-Beryllium neutron source are authorized for loading in the MPC-68F. The Antimony-Beryllium source material shall be in a water rod location.
Renewed Amendment No. 10
Approved Contents 2.0 Certificate of Compliance No. 1014 Appendix B 2-17 Table 2.1-1 (page 11 of 29)
Fuel Assembly Limits III. MPC MODEL: MPC-68 and MPC-68FF A. Allowable Contents
- 1. Uranium oxide or MOX BWR INTACT FUEL ASSEMBLIES listed in Table 2.1-3, with or without channels and meeting the following specifications:
- a. Cladding Type:
ZR or Stainless Steel (SS) as specified in Table 2.1-3 for the applicable fuel assembly array/class
- b. Maximum PLANAR-AVERAGE INITIAL ENRICHMENT:
As specified in Table 2.1-3 for the applicable fuel assembly array/class.
- c. Initial Maximum Rod Enrichment As specified in Table 2.1-3 for the applicable fuel assembly array/class.
- d. Post-irradiation Cooling Time and Average Burnup Per Assembly
- i. Array/Classes 6x6A, 6x6B, 6x6C, 7x7A, and 8x8A Cooling time 18 years and an average burnup 30,000 MWD/MTU (or MWD/MTIHM).
ii. Array/Class 8x8F Cooling time 10 years and an average burnup 27,500 MWD/MTU.
iii. Array/Classes 10x10D and 10x10E Cooling time 10 years and an average burnup 22,500 MWD/MTU.
iv. All Other Array/Classes As specified in Section 2.4.
Renewed Amendment No. 10
Approved Contents 2.0 Certificate of Compliance No. 1014 Appendix B 2-18 Table 2.1-1 (page 12 of 29)
Fuel Assembly Limits III. MPC MODEL: MPC-68 and MPC-68FF (continued)
A. Allowable Contents (continued)
- e. Decay Heat Per Assembly
- i. Array/Classes 6x6A, 6X6B, 6x6C, 7x7A, and 8x8A 115 Watts ii. Array/Class 8x8F 183.5 Watts iii. Array/Classes 10x10D and 10x10E 95 Watts iv. All Other Array/Classes As specified in Section 2.4.
- f. Fuel Assembly Length
- i. Array/Class 6x6A, 6x6B, 6x6C, 7x7A, or 8x8A 135.0 inches (nominal design) ii. All Other Array/Classes 176.5 inches (nominal design)
- g. Fuel Assembly Width
- i. Array/Class 6x6A, 6x6B, 6x6C, 7x7A, or 8x8A 4.70 inches (nominal design) ii. All Other Array/Classes 5.85 inches (nominal design)
- h. Fuel Assembly Weight
- i. Array/Class 6x6A, 6x6B, 6x6C, 7x7A, or 8x8A 400 lbs, including channels ii. All Other Array/Classes 730 lbs, including channels Renewed Amendment No. 10
Approved Contents 2.0 Certificate of Compliance No. 1014 Appendix B 2-19 Table 2.1-1 (page 13 of 29)
Fuel Assembly Limits III. MPC MODEL: MPC-68 and MPC-68FF (continued)
A. Allowable Contents (continued) 2.
Uranium oxide or MOX BWR DAMAGED FUEL ASSEMBLIES or FUEL DEBRIS, with or without channels, placed in DAMAGED FUEL CONTAINERS.
Uranium oxide and MOX BWR DAMAGED FUEL ASSEMBLIES and FUEL DEBRIS shall meet the criteria specified in Table 2.1-3, and meet the following specifications:
- a. Cladding Type:
ZR or Stainless Steel (SS) in accordance with Table 2.1-3 for the applicable fuel assembly array/class.
- b. Maximum PLANAR-AVERAGE INITIAL ENRICHMENT:
- i. Array/Classes 6x6A, 6x6B, 6x6C, 7x7A, and 8x8A.
As specified in Table 2.1-3 for the applicable fuel assembly array/class.
ii. All Other Array Classes 4.0 wt.% 235U.
- c. Initial Maximum Rod Enrichment As specified in Table 2.1-3 for the applicable fuel assembly array/class.
- d. Post-irradiation Cooling Time and Average Burnup Per Assembly:
- i. Array/Class 6x6A, 6x6B, 6x6C, 7x7A, or 8x8A Cooling time 18 years and an average burnup 30,000 MWD/MTU (or MWD/MTIHM).
ii. Array/Class 8x8F Cooling time 10 years and an average burnup 27,500 MWD/MTU.
iii. Array/Class 10x10D and 10x10E Cooling time 10 years and an average burnup 22,500 MWD/MTU.
iv. All Other Array/Classes As specified in Section 2.4.
Renewed Amendment No. 10
Approved Contents 2.0 Certificate of Compliance No. 1014 Appendix B 2-20 Table 2.1-1 (page 14 of 29)
Fuel Assembly Limits III. MPC MODEL: MPC-68 and MPC-68FF (continued)
A. Allowable Contents (continued)
- e. Decay Heat Per Assembly
- i. Array/Class 6x6A, 6x6B, 6x6C, 7x7A, or 8x8A 115 Watts ii. Array/Class 8x8F 183.5 Watts iii. Array/Classes 10x10D and 10x10E 95 Watts iv. All Other Array/Classes As specified in Section 2.4.
- f. Fuel Assembly Length
- i. Array/Class 6x6A, 6x6B, 6x6C, 7x7A, or 8x8A 135.0 inches (nominal design) ii. All Other Array/Classes 176.5 inches (nominal design)
- g. Fuel Assembly Width
- i. Array/Class 6x6A, 6x6B, 6x6C, 7x7A, or 8x8A 4.70 inches (nominal design) ii. All Other Array/Classes 5.85 inches (nominal design)
- h. Fuel Assembly Weight
- i. Array/Class 6x6A, 6x6B, 6x6C, 7x7A, or 8x8A 550 lbs, including channels and DFC ii. All Other Array/Classes 730 lbs, including channels and DFC Renewed Amendment No. 10
Approved Contents 2.0 Certificate of Compliance No. 1014 Appendix B 2-21 Table 2.1-1 (page 15 of 29)
Fuel Assembly limits III. MPC MODEL: MPC-68 and MPC-68FF (continued)
A. Allowable Contents (continued)
- 3. Thoria rods (ThO2 and UO2) placed in Dresden Unit 1 Thoria Rod Canisters and meeting the following specifications:
- a. Cladding type ZR
- b. Composition 98.2 wt.% ThO2, 1.8 wt.% UO2 with an enrichment of 93.5 wt.% 235U.
- c. Number of Rods per Thoria Rod Canister:
18
- d. Decay Heat Per Thoria Rod Canister:
115 Watts
- e. Post-irradiation Fuel Cooling Time and Average Burnup per Thoria Rod Canister:
A fuel post-irradiation cooling time 18 years and an average burnup 16,000 MWD/MTIHM
- f. Initial Heavy Metal Weight:
27 kg/canister
- g. Fuel Cladding O.D.:
0.412 inches
- h. Fuel Cladding I.D.:
0.362 inches
- i. Fuel Pellet O.D.:
0.358 inches
- j. Active Fuel Length:
111 inches
- k. Canister Weight:
550 lbs, including fuel Renewed Amendment No. 10
Approved Contents 2.0 Certificate of Compliance No. 1014 Appendix B 2-22 Table 2.1-1 (page 16 of 29)
Fuel Assembly Limits III. MPC MODEL: MPC-68 and MPC-68FF (continued)
B. Quantity per MPC (up to a total of 68 assemblies)
- 1. For fuel assembly array/classes 6x6A, 6X6B, 6x6C, 7x7A, or 8x8A, up to 68 BWR INTACT FUEL ASSEMBLIES and/or DAMAGED FUEL ASSEMBLIES.
Up to eight (8) DFCs containing FUEL DEBRIS from these array/classes may be stored.
- 2. For all other array/classes, up to sixteen (16) DFCs containing BWR DAMAGED FUEL ASSEMBLIES and/or up to eight (8) DFCs containing FUEL DEBRIS. DFCs shall be located only in fuel storage locations 1, 2, 3, 8, 9, 16, 25, 34, 35, 44, 53, 60, 61, 66, 67, and/or 68. The remaining fuel storage locations may be filled with fuel assemblies of the following type:
i.
Uranium Oxide BWR INTACT FUEL ASSEMBLIES; or ii.
MOX BWR INTACT FUEL ASSEMBLIES.
- 3. Up to one (1) Dresden Unit 1 Thoria Rod Canister C. Dresden Unit 1 fuel assemblies with one Antimony-Beryllium neutron source are authorized for loading. The Antimony-Beryllium source material shall be in a water rod location.
D. Array/Class 10x10D and 10x10E fuel assemblies in stainless steel channels must be stored in fuel storage locations 19 - 22, 28 - 31, 38 -41, and/or 47 -
50 (see Figure 2.1-4).
Renewed Amendment No. 10
Approved Contents 2.0 Certificate of Compliance No. 1014 Appendix B 2-23 Table 2.1-1 (page 17 of 29)
Fuel Assembly Limits IV. MPC MODEL: MPC-24E and MPC-24EF A. Allowable Contents 1.
Uranium oxide, PWR INTACT FUEL ASSEMBLIES listed in Table 2.1-2, with or without NON-FUEL HARDWARE and meeting the following specifications (Note 1):
- a. Cladding Type:
ZR or Stainless Steel (SS) as specified in Table 2.1-2 for the applicable fuel assembly array/class
- b. Initial Enrichment:
As specified in Table 2.1-2 for the applicable fuel assembly array/class.
- c. Post-irradiation Cooling Time and Average Burnup Per Assembly:
- i. Array/Classes 14x14D, 14x14E, and 15x15G Cooling time 8 years and an average burnup 40,000 MWD/MTU.
ii. All Other Array/Classes As specified in Section 2.4.
iii. NON-FUEL HARDWARE As specified in Table 2.1-8.
Renewed Amendment No. 10
Approved Contents 2.0 Certificate of Compliance No. 1014 Appendix B 2-24 Table 2.1-1 (page 18 of 29)
Fuel Assembly Limits IV. MPC MODEL: MPC-24E and MPC-24EF (continued)
A. Allowable Contents (continued)
- d. Decay Heat Per Fuel Storage Location:
- i. Array/Classes 14x14D, 14x14E, and 15x15G 710 Watts.
ii. All other Array/Classes As specified in Section 2.4.
- e. Fuel Assembly Length:
176.8 inches (nominal design)
- f. Fuel Assembly Width:
8.54 inches (nominal design)
- g. Fuel Assembly Weight:
1,720 lbs (including NON-FUEL HARDWARE) for assemblies that do not require fuel spacers, otherwise, 1,680 lbs (including NON-FUEL HARDWARE)
Renewed Amendment No. 10
Approved Contents 2.0 Certificate of Compliance No. 1014 Appendix B 2-25 Table 2.1-1 (page 19 of 29)
Fuel Assembly Limits IV. MPC MODEL: MPC-24E and MPC-24EF (continued)
A. Allowable Contents (continued)
- 2. Uranium oxide, PWR DAMAGED FUEL ASSEMBLIES and FUEL DEBRIS, with or without NON-FUEL HARDWARE, placed in DAMAGED FUEL CONTAINERS.
Uranium oxide PWR DAMAGED FUEL ASSEMBLIES and FUEL DEBRIS shall meet the criteria specified in Table 2.1-2 and meet the following specifications (Note 1):
- a. Cladding Type:
ZR or Stainless Steel (SS) as specified in Table 2.1-2 for the applicable fuel assembly array/class
- b. Initial Enrichment:
As specified in Table 2.1-2 for the applicable fuel assembly array/class.
- c. Post-irradiation Cooling Time and Average Burnup Per Assembly:
- i. Array/Classes 14x14D, 14x14E, and 15x15G Cooling time 8 years and an average burnup 40,000 MWD/MTU.
ii. All Other Array/Classes As specified in Section 2.4.
iii. NON-FUEL HARDWARE As specified in Table 2.1-8.
Renewed Amendment No. 10
Approved Contents 2.0 Certificate of Compliance No. 1014 Appendix B 2-26 Table 2.1-1 (page 20 of 29)
Fuel Assembly Limits IV. MPC MODEL: MPC-24E and MPC-24EF (continued)
A. Allowable Contents (continued)
- d. Decay Heat Per Fuel Storage Location:
- i. Array/Classes 14x14D, 14x14E, and 15x15G 710 Watts.
ii. All Other Array/Classes As specified in Section 2.4.
- e. Fuel Assembly Length 176.8 inches (nominal design)
- f. Fuel Assembly Width 8.54 inches (nominal design)
- g. Fuel Assembly Weight 1,720 lbs (including NON-FUEL HARDWARE and DFC) for assemblies that do not require fuel spacers, otherwise, 1,680 lbs (including NON-FUEL HARDWARE and DFC)
B. Quantity per MPC: Up to four (4) DAMAGED FUEL ASSEMBLIES and/or FUEL DEBRIS in DAMAGED FUEL CONTAINERS, stored in fuel storage locations 3, 6, 19 and/or 22. The remaining fuel storage locations may be filled with PWR INTACT FUEL ASSEMBLIES meeting the applicable specifications.
C. One NSA is permitted for loading.
Note 1: Fuel assemblies containing BPRAs, TPDs, WABAs, water displacement guide tube plugs, orifice rod assemblies, or vibration suppressor inserts, with or without ITTRs, may be stored in any fuel storage location. Fuel assemblies containing APSRs or NSAs may only be loaded in fuel storage locations 9, 10, 15, and/or 16 (see Figure 2.1-2). Fuel assemblies containing CRAs, RCCAs, or CEAs may only be stored in fuel storage locations 4, 5, 8 - 11, 14 - 17, 20 and/or 21 (see Figure 2.1-2). These requirements are in addition to any other requirements specified for uniform or regionalized fuel loading.
Renewed Amendment No. 10
Approved Contents 2.0 Certificate of Compliance No. 1014 Appendix B 2-27 Table 2.1-1 (page 21 of 29)
Fuel Assembly Limits V. MPC MODEL: MPC-32 and MPC-32F A. Allowable Contents 1.
Uranium oxide, PWR INTACT FUEL ASSEMBLIES listed in Table 2.1-2, with or without NON-FUEL HARDWARE and meeting the following specifications (Note 1):
- a. Cladding Type:
ZR or Stainless Steel (SS) as specified in Table 2.1-2 for the applicable fuel assembly array/class
- b. Initial Enrichment:
As specified in Table 2.1-2 for the applicable fuel assembly array/class.
- c. Post-irradiation Cooling Time and Average Burnup Per Assembly:
- i. Array/Classes 14x14D, 14x14E, and 15x15G Cooling time 9 years and an average burnup 30,000 MWD/MTU or cooling time 20 years and an average burnup 40,000 MWD/MTU.
ii. All Other Array/Classes As specified in Section 2.4.
iii. NON-FUEL HARDWARE As specified in Table 2.1-8.
Renewed Amendment No. 10
Approved Contents 2.0 Certificate of Compliance No. 1014 Appendix B 2-28 Table 2.1-1 (page 22 of 29)
Fuel Assembly Limits V. MPC MODEL: MPC-32 and MPC-32F (contd)
A. Allowable Contents (contd)
- d. Decay Heat Per Fuel Storage Location:
- i. Array/Classes 14x14D, 14x14E, and 15x15G 500 Watts.
ii. All Other Array/Classes As specified in Section 2.4.
- e. Fuel Assembly Length 176.8 inches (nominal design)
- f. Fuel Assembly Width 8.54 inches (nominal design)
- g. Fuel Assembly Weight 1,720 lbs (including NON-FUEL HARDWARE) for assemblies that do not require fuel spacers, otherwise, 1,680 lbs (including NON-FUEL HARDWARE)
Renewed Amendment No. 10
Approved Contents 2.0 Certificate of Compliance No. 1014 Appendix B 2-29 Table 2.1-1 (page 23 of 29)
Fuel Assembly Limits V. MPC MODEL: MPC-32 and MPC-32F (contd)
A. Allowable Contents (contd) 2.
Uranium oxide, PWR DAMAGED FUEL ASSEMBLIES and FUEL DEBRIS, with or without NON-FUEL HARDWARE, placed in DAMAGED FUEL CONTAINERS. Uranium oxide PWR DAMAGED FUEL ASSEMBLIES and FUEL DEBRIS shall meet the criteria specified in Table 2.1-2 and meet the following specifications (Note 1):
- a. Cladding Type:
ZR or Stainless Steel (SS) as specified in Table 2.1-2 for the applicable fuel assembly array/class
- b. Initial Enrichment:
As specified in Table 2.1-2 for the applicable fuel assembly array/class.
- c. Post-irradiation Cooling Time and Average Burnup Per Assembly:
- i. Array/Classes 14x14D, 14x14E, and 15x15G Cooling time 9 years and an average burnup 30,000 MWD/MTU or cooling time 20 years and an average burnup 40,000 MWD/MTU.
ii. All Other Array/Classes As specified in Section 2.4.
iii. NON-FUEL HARDWARE As specified in Table 2.1-8.
Renewed Amendment No. 10
Approved Contents 2.0 Certificate of Compliance No. 1014 Appendix B 2-30 Table 2.1-1 (page 24 of 29)
Fuel Assembly Limits V. MPC MODEL: MPC-32 and MPC-32F (contd)
A. Allowable Contents (contd)
- d. Decay Heat Per Fuel Storage Location:
- i. Array/Classes 14x14D, 14x14E, and 15x15G 500 Watts.
ii. All Other Array/Classes As specified in Section 2.4.
- e. Fuel Assembly Length 176.8 inches (nominal design)
- f. Fuel Assembly Width 8.54 inches (nominal design)
- g. Fuel Assembly Weight 1,720 lbs (including NON-FUEL HARDWARE and DFC) for assemblies that do not require fuel spacers, otherwise, 1,680 lbs (including NON-FUEL HARDWARE and DFC)
B.
Quantity per MPC: Up to eight (8) DAMAGED FUEL ASSEMBLIES and/or FUEL DEBRIS in DAMAGED FUEL CONTAINERS, stored in fuel storage locations 1, 4, 5, 10, 23, 28, 29, and/or 32. The remaining fuel storage locations may be filled with PWR INTACT FUEL ASSEMBLIES meeting the applicable specifications.
C.
One NSA is permitted for loading.
Note 1: Fuel assemblies containing BPRAs, TPDs, WABAs, water displacement guide tube plugs, orifice rod assemblies, or vibration suppressor inserts, with or without ITTRs, may be stored in any fuel storage location. Fuel assemblies containing NSAs may only be loaded in fuel storage locations 13, 14, 19 and/or 20 (see Figure 2.1-3). Fuel assemblies containing CRAs, RCCAs, CEAs or APSRs may only be loaded in fuel storage locations 7, 8, 12-15, 18-21, 25 and/or 26 (see Figure 2.1-3). These requirements are in addition to any other requirements specified for uniform or regionalized fuel loading.
Renewed Amendment No. 10
Approved Contents 2.0 Certificate of Compliance No. 1014 Appendix B 2-31 Table 2.1-1 (page 25 of 29)
Fuel Assembly Limits VI. MPC MODEL: MPC-68M A. Allowable Contents
- 1. Uranium oxide BWR UNDAMAGED FUEL ASSEMBLIES listed in Table 2.1-3, with or without channels and meeting the following specifications:
- a. Cladding Type:
ZR
- b. Maximum PLANAR-AVERAGE INITIAL ENRICHMENT:
As specified in Table 2.1-3 for the applicable fuel assembly array/class.
- c. Initial Maximum Rod Enrichment As specified in Table 2.1-3 for the applicable fuel assembly array/class.
- d. Post-irradiation Cooling Time and Average Burnup Per Assembly
- i. Array/Class 8x8F Cooling time 10 years and an average burnup 27,500 MWD/MTU.
ii. All Other Array/Classes As specified in Section 2.4.
Renewed Amendment No. 10
Approved Contents 2.0 Certificate of Compliance No. 1014 Appendix B 2-32 Table 2.1-1 (page 26 of 29)
Fuel Assembly Limits VI. MPC MODEL: MPC-68M (continued)
A. Allowable Contents (continued)
- e. Decay Heat Per Assembly
- i. Array/Class 8x8F 183.5 Watts ii. All Other Array/Classes As specified in Section 2.4.
- f. Fuel Assembly Length 176.5 inches (nominal design)
- g. Fuel Assembly Width 5.85 inches (nominal design)
- h. Fuel Assembly Weight 730 lbs, including channels Renewed Amendment No. 10
Approved Contents 2.0 Certificate of Compliance No. 1014 Appendix B 2-33 Table 2.1-1 (page 27 of 29)
Fuel Assembly Limits VI. MPC MODEL: MPC-68M (continued)
A. Allowable Contents (continued) 2.
Uranium oxide BWR DAMAGED FUEL ASSEMBLIES or FUEL DEBRIS, with or without channels, placed in DAMAGED FUEL CONTAINERS. Uranium oxide BWR DAMAGED FUEL ASSEMBLIES and FUEL DEBRIS shall meet the criteria specified in Table 2.1-3, and meet the following specifications:
- a. Cladding Type:
ZR
- b. Maximum PLANAR-AVERAGE INITIAL ENRICHMENT:
As specified in Table 2.1-3 for the applicable fuel assembly array/class.
- c. Initial Maximum Rod Enrichment As specified in Table 2.1-3 for the applicable fuel assembly array/class.
- d. Post-irradiation Cooling Time and Average Burnup Per Assembly:
- i. Array/Class 8x8F Cooling time 10 years and an average burnup 27,500 MWD/MTU.
ii. All Other Array/Classes As specified in Section 2.4.
Renewed Amendment No. 10
Approved Contents 2.0 Certificate of Compliance No. 1014 Appendix B 2-34 Table 2.1-1 (page 28 of 29)
Fuel Assembly Limits VI. MPC MODEL: MPC-68M (continued)
A. Allowable Contents (continued)
- e. Decay Heat Per Assembly
- i. Array/Class 8x8F 183.5 Watts ii. All Other Array/Classes As specified in Section 2.4.
- f. Fuel Assembly Length 176.5 inches (nominal design)
- g. Fuel Assembly Width 5.85 inches (nominal design)
- h. Fuel Assembly Weight 730 lbs, including channels and DFC Renewed Amendment No. 10
Approved Contents 2.0 Certificate of Compliance No. 1014 Appendix B 2-35 Table 2.1-1 (page 29 of 29)
Fuel Assembly Limits VI. MPC MODEL: MPC-68M (continued)
B. Quantity per MPC (up to a total of 68 assemblies)
Up to sixteen (16) DFCs containing BWR DAMAGED FUEL ASSEMBLIES and/or up to eight (8) DFCs containing FUEL DEBRIS. DFCs shall be located only in fuel storage locations 1, 2, 3, 8, 9, 16, 25, 34, 35, 44, 53, 60, 61, 66, 67, and/or 68. The remaining fuel storage locations may be filled with Uranium Oxide BWR UNDAMAGED FUEL ASSEMBLIES.
Renewed Amendment No. 10
Approved Contents 2.0 Certificate of Compliance No. 1014 Appendix B 2-36 Table 2.1-2 (page 1 of 5)
PWR FUEL ASSEMBLY CHARACTERISTICS (Note 1)
Fuel Assembly Array/Class 14x14A 14x14B 14x14C 14x14D 14x14E Clad Material ZR ZR ZR SS SS Design Initial U (kg/assy.) (Note 3) 365 412 438 400 206 Initial Enrichment (MPC-24, 24E and 24EF without soluble boron credit) (wt % 235U)
(Note 7) 4.6 (24) 5.0 (24E/24EF) 4.6 (24) 5.0 (24E/24EF) 4.6 (24) 5.0 (24E/24EF) 4.0 (24) 5.0 (24E/24EF) 5.0 (24) 5.0 (24E/24EF)
Initial Enrichment (MPC-24, 24E, 24EF, 32, or 32F with soluble boron credit - see Note 5)
(wt % 235U) 5.0 5.0 5.0 5.0 5.0 No. of Fuel Rod Locations 179 179 176 180 173 Fuel Rod Clad O.D. (in.)
0.400 0.417 0.440 0.422 0.3415 Fuel Rod Clad I.D.
(in.)
0.3514 0.3734 0.3880 0.3890 0.3175 Fuel Pellet Dia.
(in.)(Note 8) 0.3444 0.3659 0.3805 0.3835 0.3130 Fuel Rod Pitch (in.)
0.556 0.556 0.580 0.556 Note 6 Active Fuel Length (in.)
150 150 150 144 102 No. of Guide and/or Instrument Tubes 17 17 5 (Note 4) 16 0
Guide/Instrument Tube Thickness (in.)
0.017 0.017 0.038 0.0145 N/A Renewed Amendment No. 10
Approved Contents 2.0 Certificate of Compliance No. 1014 Appendix B 2-37 Table 2.1-2 (page 2 of 5)
PWR FUEL ASSEMBLY CHARACTERISTICS (Note 1)
Fuel Assembly Array/Class 15x15A 15x15B 15x15C 15x15D 15x15E 15x15F Clad Material ZR ZR ZR ZR ZR ZR Design Initial U (kg/assy.) (Note 3)
< 473
< 473
< 473
< 495
< 495
< 495 Initial Enrichment (MPC-24, 24E and 24EF without soluble boron credit)
(wt % 235U)
(Note 7)
< 4.1 (24)
< 4.5 (24E/24EF)
< 4.1 (24)
< 4.5 (24E/24EF)
< 4.1 (24)
< 4.5 (24E/24EF)
< 4.1 (24)
< 4.5 (24E/24EF)
< 4.1 (24)
< 4.5 (24E/24EF)
< 4.1 (24)
< 4.5 (24E/24EF)
Initial Enrichment (MPC-24, 24E, 24EF, 32, or 32F with soluble boron credit - see Note 5)(wt % 235U)
< 5.0
< 5.0
< 5.0
< 5.0
< 5.0
< 5.0 No. of Fuel Rod Locations 204 204 204 208 208 208 Fuel Rod Clad O.D. (in.)
> 0.418
> 0.420
> 0.417
> 0.430
> 0.428
> 0.428 Fuel Rod Clad I.D.
(in.)
< 0.3660
< 0.3736
< 0.3640
< 0.3800
< 0.3790
< 0.3820 Fuel Pellet Dia.
(in.) (Note 8)
< 0.3580
< 0.3671
< 0.3570
< 0.3735
< 0.3707
< 0.3742 Fuel Rod Pitch (in.)
< 0.550
< 0.563
< 0.563
< 0.568
< 0.568
< 0.568 Active Fuel Length (in.)
< 150
< 150
< 150
< 150
< 150
< 150 No. of Guide and/or Instrument Tubes 21 21 21 17 17 17 Guide/Instrument Tube Thickness (in.)
> 0.0165
> 0.015
> 0.0165
> 0.0150
> 0.0140
> 0.0140 Renewed Amendment No. 10
Approved Contents 2.0 Certificate of Compliance No. 1014 Appendix B 2-38 Table 2.1-2 (page 3 of 5)
PWR FUEL ASSEMBLY CHARACTERISTICS (Note 1)
Fuel Assembly Array/ Class 15x15G 15x15H 15x15I 16x16A 16x16B 16x16C Clad Material SS ZR ZR ZR ZR ZR Design Initial U (kg/assy.)(Note 3)
< 420
< 495 495
< 448
< 427
< 426 Initial Enrichment (MPC-24, 24E, and 24EF without soluble boron credit)(wt % 235U)
(Note 7)
< 4.0 (24)
< 4.5 (24E/24 EF)
< 3.8 (24)
< 4.2 (24E/24E F)
N/A (Note 9)
< 4.6 (24)
< 5.0 (24E/24E F)
< 4.6 (24)
< 5.0 (24E/24E F)
< 4.6 (24)
< 5.0 (24E/24E F)
Initial Enrichment (MPC-24, 24E, 24EF, 32, or 32F with soluble boron credit - see Note 5) (wt %
235U)
< 5.0
< 5.0 5.0 (Note 9)
< 5.0
< 5.0
< 5.0 No. of Fuel Rod Locations 204 208 216 236 236 235 Fuel Rod Clad O.D. (in.)
> 0.422
> 0.414 0.413
> 0.382
> 0.374
> 0.374 Fuel Rod Clad I.D. (in.)
0.3890
< 0.3700 0.367
< 0.3350
< 0.3290
< 0.3290 Fuel Pellet Dia.
(in.) (Note 8) 0.3825
< 0.3622 0.360
< 0.3255
< 0.3225
< 0.3225 Fuel Rod Pitch (in.)
< 0.563
< 0.568 0.550
< 0.506
< 0.506
< 0.485 Active Fuel Length (in.)
< 144
< 150 150
< 150
< 150
< 150 No. of Guide and/or Instrument Tubes 21 17 9
(Note 10) 5 (Note 4) 5 (Note 4) 21 Guide/Instrument Tube Thickness (in.)
0.0145
> 0.0140 0.0140
> 0.0350
> 0.0400
> 0.0157 Renewed Amendment No. 10
Approved Contents 2.0 Certificate of Compliance No. 1014 Appendix B 2-39 Table 2.1-2 (page 4 of 5)
PWR FUEL ASSEMBLY CHARACTERISTICS (Note 1)
Fuel Assembly Array/ Class 17x17A 17x17B 17x17C Clad Material ZR ZR ZR Design Initial U (kg/assy.)(Note
- 3)
< 433
< 474
< 480 Initial Enrichment (MPC-24, 24E, and 24EF without soluble boron credit)(wt
% 235U) (Note 7)
< 4.0 (24)
< 4.4 (24E/24E F)
< 4.0 (24)
< 4.4 (24E/24E F)
< 4.0 (24)
< 4.4 (24E/24E F)
Initial Enrichment (MPC-24, 24E, 24EF, 32, or 32F with soluble boron credit -
see Note 5) (wt
% 235U)
< 5.0
< 5.0
< 5.0 No. of Fuel Rod Locations 264 264 264 Fuel Rod Clad O.D. (in.)
> 0.360
> 0.372
> 0.377 Fuel Rod Clad I.D. (in.)
< 0.3150
< 0.3310
< 0.3330 Fuel Pellet Dia.
(in.) (Note 8)
< 0.3088
< 0.3232
< 0.3252 Fuel Rod Pitch (in.)
< 0.496
< 0.496
< 0.502 Active Fuel Length (in.)
< 150
< 150
< 150 No. of Guide and/or Instrument Tubes 25 25 25 Guide/Instrume nt Tube Thickness (in.)
> 0.016
> 0.014
> 0.020 Renewed Amendment No. 10
Approved Contents 2.0 Certificate of Compliance No. 1014 Appendix B 2-40 Table 2.1-2 (page 5 of 5)
PWR FUEL ASSEMBLY CHARACTERISTICS Notes:
- 1. All dimensions are design nominal values. Maximum and minimum dimensions are specified to bound variations in design nominal values among fuel assemblies within a given array/class.
- 2. Deleted.
- 3. Design initial uranium weight is the nominal uranium weight specified for each assembly by the fuel manufacturer or reactor user. For each PWR fuel assembly, the total uranium weight limit specified in this table may be increased up to 2.0 percent for comparison with users fuel records to account for manufacturers tolerances.
- 4. Each guide tube replaces four fuel rods.
- 6. This fuel assembly array/class includes only the Indian Point Unit 1 fuel assembly.
This fuel assembly has two pitches in different sectors of the assembly. These pitches are 0.441 inches and 0.453 inches.
- 7. For those MPCs loaded with both INTACT FUEL ASSEMBLIES and DAMAGED FUEL ASSEMBLIES or FUEL DEBRIS, the maximum initial enrichment of the INTACT FUEL ASSEMBLIES, DAMAGED FUEL ASSEMBLIES and FUEL DEBRIS is 4.0 wt.% 235U.
- 8. Annular fuel pellets are allowed in the top and bottom 12" of the active fuel length.
- 9. This fuel assembly array/class can only be loaded in MPC-32.
10.One Instrument Tube and eight Guide Bars (Solid ZR)
Renewed Amendment No. 10
Approved Contents 2.0 Certificate of Compliance No. 1014 Appendix B 2-41 Table 2.1-3 (page 1 of 5)
BWR FUEL ASSEMBLY CHARACTERISTICS (Note 1)
Fuel Assembly Array/Class 6x6A 6x6B 6x6C 7x7A 7x7B 8x8A Clad Material ZR ZR ZR ZR ZR ZR Design Initial U (kg/assy.) (Note 3)
< 110
< 110
< 110
< 100
< 198
< 120 Maximum PLANAR-AVERAGE INITIAL ENRICHMENT (MPC-68, 68F, and 68FF)
(wt.% 235U)
(Note 14)
< 2.7
< 2.7 for the UO2 rods.
See Note 4 for MOX rods
< 2.7
< 2.7
< 4.2
< 2.7 Maximum PLANAR-AVERAGE INITIAL ENRICHMENT (MPC-68M)
(wt.% 235U)
(Note 16, 19)
Note 18 Note 18 Note 18 Note 18 4.8 Note 18 Initial Maximum Rod Enrichment (wt.% 235U)
< 4.0
< 4.0
< 4.0
< 5.5
< 5.0
< 4.0 No. of Fuel Rod Locations 35 or 36 35 or 36 (up to 9 MOX rods) 36 49 49 63 or 64 Fuel Rod Clad O.D.
(in.)
> 0.5550
> 0.5625
> 0.5630
> 0.4860
> 0.5630
> 0.4120 Fuel Rod Clad I.D.
(in.)
< 0.5105
< 0.4945
< 0.4990
< 0.4204
< 0.4990
< 0.3620 Fuel Pellet Dia. (in.)
< 0.4980
< 0.4820
< 0.4880
< 0.4110
< 0.4910
< 0.3580 Fuel Rod Pitch (in.)
< 0.710
< 0.710
< 0.740
< 0.631
< 0.738
< 0.523 Active Fuel Length (in.)
< 120
< 120
< 77.5
< 80
< 150
< 120 No. of Water Rods (Note 11) 1 or 0 1 or 0 0
0 0
1 or 0 Water Rod Thickness (in.)
> 0
> 0 N/A N/A N/A
> 0 Channel Thickness (in.)
< 0.060
< 0.060
< 0.060
< 0.060
< 0.120
< 0.100 Renewed Amendment No. 10
Approved Contents 2.0 Certificate of Compliance No. 1014 Appendix B 2-42 Table 2.1-3 (2 of 5)
BWR FUEL ASSEMBLY CHARACTERISTICS (Note 1)
Fuel Assembly Array/Class 8x8B 8x8C 8x8D 8x8E 8x8F 9x9A Clad Material ZR ZR ZR ZR ZR ZR Design Initial U (kg/assy.) (Note 3)
< 192
< 190
< 190
< 190
< 191
< 180 Maximum PLANAR-AVERAGE INITIAL ENRICHMENT (MPC-68, 68F, and 68FF)
(wt.% 235U)
(Note 14)
< 4.2
< 4.2
< 4.2
< 4.2
< 4.0
< 4.2 Maximum PLANAR-AVERAGE INITIAL ENRICHMENT (MPC-68M)
(wt.% 235U)
(Note 16, 19) 4.8 4.8 4.8 4.8 4.5 (Note 15) 4.8 Initial Maximum Rod Enrichment (wt.% 235U)
< 5.0
< 5.0
< 5.0
< 5.0
< 5.0
< 5.0 No. of Fuel Rod Locations 63 or 64 62 60 or 61 59 64 74/66 (Note 5)
Fuel Rod Clad O.D.
(in.)
> 0.4840
> 0.4830
> 0.4830
> 0.4930
> 0.4576
> 0.4400 Fuel Rod Clad I.D.
(in.)
< 0.4295
< 0.4250
< 0.4230
< 0.4250
< 0.3996
< 0.3840 Fuel Pellet Dia. (in.)
< 0.4195
< 0.4160
< 0.4140
< 0.4160
< 0.3913
< 0.3760 Fuel Rod Pitch (in.)
< 0.642
< 0.641
< 0.640
< 0.640
< 0.609
< 0.566 Design Active Fuel Length (in.)
< 150
< 150
< 150
< 150
< 150
< 150 No. of Water Rods (Note 11) 1 or 0 2
1 - 4 (Note 7) 5 N/A (Note 12) 2 Water Rod Thickness (in.)
> 0.034
> 0.00
> 0.00
> 0.034
> 0.0315
> 0.00 Channel Thickness (in.)
< 0.120
< 0.120
< 0.120
< 0.100
< 0.055
< 0.120 Renewed Amendment No. 10
Approved Contents 2.0 Certificate of Compliance No. 1014 Appendix B 2-43 Table 2.1-3 (page 3 of 5)
BWR FUEL ASSEMBLY CHARACTERISTICS (Note 1)
Fuel Assembly Array/Class 9x9B 9x9C 9x9D 9x9E (Note 13) 9x9F (Note 13) 9x9G Clad Material ZR ZR ZR ZR ZR ZR Design Initial U (kg/assy.)(Note 3)
< 180
< 182
< 182
< 183
< 183
< 164 Maximum PLANAR-AVERAGE INITIAL ENRICHMENT (MPC-68, 68F, and 68FF)
(wt.% 235U)
(Note 14)
< 4.2
< 4.2
< 4.2
< 4.0
< 4.0
< 4.2 Maximum PLANAR-AVERAGE INITIAL ENRICHMENT (MPC-68M)
(wt.% 235U)
(Note 16, 19) 4.8 4.8 4.8 4.5 (Note 15) 4.5 (Note 15) 4.8 Initial Maximum Rod Enrichment (wt.% 235U)
< 5.0
< 5.0
< 5.0
< 5.0
< 5.0
< 5.0 No. of Fuel Rod Locations 72 80 79 76 76 72 Fuel Rod Clad O.D.
(in.)
> 0.4330
> 0.4230
> 0.4240
> 0.4170
> 0.4430
> 0.4240 Fuel Rod Clad I.D.
(in.)
< 0.3810
< 0.3640
< 0.3640
< 0.3640
< 0.3860
< 0.3640 Fuel Pellet Dia. (in.)
< 0.3740
< 0.3565
< 0.3565
< 0.3530
< 0.3745
< 0.3565 Fuel Rod Pitch (in.)
< 0.572
< 0.572
< 0.572
< 0.572
< 0.572
< 0.572 Design Active Fuel Length (in.)
< 150
< 150
< 150
< 150
< 150
< 150 No. of Water Rods (Note 11) 1 (Note 6) 1 2
5 5
1 (Note 6)
Water Rod Thickness (in.)
> 0.00
> 0.020
> 0.0300
> 0.0120
> 0.0120
> 0.0320 Channel Thickness (in.)
< 0.120
< 0.100
< 0.100
< 0.120
< 0.120
< 0.120 Renewed Amendment No. 10
Approved Contents 2.0 Certificate of Compliance No. 1014 Appendix B 2-44 Table 2.1-3 (page 4 of 5)
BWR FUEL ASSEMBLY CHARACTERISTICS (Note 1)
Fuel Assembly Array/Class 10x10A 10x10B 10x10C 10x10D 10x10E 10x10F 10x10G Clad Material ZR ZR ZR SS SS ZR ZR Design Initial U (kg/assy.)
(Note 3)
< 188
< 188
< 179
< 125
< 125 192 188 Maximum PLANAR-AVERAGE INITIAL ENRICHMENT(MPC-68, 68F, and 68FF)
(wt.% 235U) (Note 14)
< 4.2
< 4.2
< 4.2
< 4.0
< 4.0 Note 17 Note 17 Maximum PLANAR-AVERAGE INITIAL ENRICHMENT (MPC-68M)
(wt.% 235U)
(Note 16, 19) 4.8 4.8 4.8 Note 18 Note 18 4.7 (Note 15) 4.6 (Note 15)
Initial Maximum Rod Enrichment (wt.% 235U)
< 5.0
< 5.0
< 5.0
< 5.0
< 5.0
< 5.0
< 5.0 No. of Fuel Rod Locations 92/78 (Note 8) 91/83 (Note 9) 96 100 96 92/78 (Note 8) 96/84 Fuel Rod Clad O.D.
(in.)
0.4040 0.3957
> 0.3780 0.3960 0.3940 0.4035 0.387 Fuel Rod Clad I.D. (in.)
0.3520 0.3480
< 0.3294 0.3560 0.3500 0.3570 0.340 Fuel Pellet Dia. (in.)
0.3455 0.3420
< 0.3224 0.3500 0.3430 0.3500 0.334 Fuel Rod Pitch (in.)
< 0.510
< 0.510
< 0.488
< 0.565
< 0.557 0.510 0.512 Design Active Fuel Length (in.)
< 150
< 150
< 150
< 83
< 83 150 150 No. of Water Rods (Note 11) 2 1
(Note 6) 5 (Note 10) 0 4
2 5
(Note 10)
Water Rod Thickness (in.)
> 0.030
> 0.00
> 0.031 N/A
> 0.022 0.030 0.031 Channel Thickness (in.)
< 0.120
< 0.120
< 0.055
< 0.080
< 0.080 0.120 0.060 Renewed Amendment No. 10
Approved Contents 2.0 Certificate of Compliance No. 1014 Appendix B 2-45 Table 2.1-3 (page 5 of 5)
BWR FUEL ASSEMBLY CHARACTERISTICS Notes:
1.
All dimensions are design nominal values. Maximum and minimum dimensions are specified to bound variations in design nominal values among fuel assemblies within a given array/class.
2.
Deleted.
3.
Design initial uranium weight is the nominal uranium weight specified for each assembly by the fuel manufacturer or reactor user. For each BWR fuel assembly, the total uranium weight limit specified in this table may be increased up to 1.5 percent for comparison with users fuel records to account for manufacturer tolerances.
4.
0.635 wt. % 235U and 1.578 wt. % total fissile plutonium (239Pu and 241Pu),
(wt. % of total fuel weight, i.e., UO2 plus PuO2).
5.
This assembly class contains 74 total rods; 66 full length rods and 8 partial length rods.
6.
Square, replacing nine fuel rods.
7.
Variable.
8.
This assembly contains 92 total fuel rods; 78 full length rods and 14 partial length rods.
9.
This assembly class contains 91 total fuel rods; 83 full length rods and 8 partial length rods.
- 10. One diamond-shaped water rod replacing the four center fuel rods and four rectangular water rods dividing the assembly into four quadrants.
- 11. These rods may also be sealed at both ends and contain Zr material in lieu of water.
- 12. This assembly is known as QUAD+. It has four rectangular water cross segments dividing the assembly into four quadrants.
- 13. For the SPC 9x9-5 fuel assembly, each fuel rod must meet either the 9x9E or the 9x9F set of limits for clad O.D., clad I.D., and pellet diameter.
- 14. For MPC-68, 68F, and 68FF loaded with both INTACT FUEL ASSEMBLIES and DAMAGED FUEL ASSEMBLIES or FUEL DEBRIS, the maximum PLANAR AVERAGE INITIAL ENRICHMENT for the INTACT FUEL ASSEMBLIES is limited to 3.7 wt.% 235U, as applicable.
- 15. Fuel assemblies classified as damaged fuel assemblies are limited to 4.6 wt.%
235U for the 10x10F array/class and 4.0 wt.% 235U for the 8x8F, 9x9E, 9x9F and 10x10G arrays/classes.
- 16. For MPC-68M loaded with both UNDAMAGED FUEL ASSEMBLIES and DAMAGED FUEL ASSEMBLIES or FUEL DEBRIS, the maximum PLANAR AVERAGE INITIAL ENRICHMENT for the UNDAMAGED FUEL ASSEMBLIES is limited to the enrichment limit of the damaged assembly.
- 17. This fuel assembly array/class is not allowable contents in MPC-68, 68F, or 68FF.
- 18. This fuel assembly array/class is not allowable contents in MPC-68M.
Renewed Amendment No. 10
Approved Contents 2.0 Certificate of Compliance No. 1014 Appendix B 2-46
- 19. In accordance with the definition of UNDAMAGED FUEL ASSEMBLY, certain assemblies may be limited to 3.3 wt.% U-235. When loading these fuel assemblies, all fuel assemblies in the MPC are limited to 3.3 wt% U-235 Renewed Amendment No. 10
Approved Contents 2.0 Certificate of Compliance No. 1014 Appendix B 2-47 Table 2.1-8 NON-FUEL HARDWARE COOLING AND AVERAGE BURNUP (Notes 1, 2, 3, and 7)
Notes: 1. Burnups for NON-FUEL HARDWARE are to be determined based on the burnup and uranium mass of the fuel assemblies in which the component was inserted during reactor operation.
2.
Linear interpolation between points is permitted, except that APSR burnups > 180,000 MWD/MTU and < 630,000 MWD/MTU must be cooled > 11 years.
3.
Applicable to uniform loading and regionalized loading.
4.
Includes Burnable Poison Rod Assemblies (BPRAs), Wet Annular Burnable Absorbers (WABAs), and vibration suppressor inserts.
5.
Includes Thimble Plug Devices (TPDs), water displacement guide tube plugs, orifice rod assemblies, Control Rod Assemblies (CRAs), Control Element Assemblies (CEAs), and Rod Cluster Control Assemblies (RCCAs).
6.
NA means not authorized for loading at this cooling time.
7.
Non-fuel hardware burnup and cooling times are not applicable to ITTRs since they are installed post irradiation.
Post-irradiation Cooling Time (years)
INSERTS (Note 4)
BURNUP (MWD/MTU)
NSA, GUIDE TUBE HARDWARE, or CONTROL COMPONENT (Note 5)
BURNUP (MWD/MTU)
APSR BURNUP (MWD/MTU)
> 3
< 24,635 NA (Note 6)
NA
> 4
< 30,000 NA NA
> 5
< 36,748
< 630,000
< 45,000
> 6
< 44,102
< 54,500
> 7
< 52,900
< 68,000
> 8
< 60,000
< 83,000
> 9
< 111,000
> 10
< 180,000
> 11
< 630,000 Renewed Amendment No. 10
Approved Contents 2.0 Certificate of Compliance No. 1014 Appendix B 2-48 2.4 Decay Heat, Burnup, and Cooling Time Limits for ZR-Clad Fuel This section provides the limits on ZR-clad fuel assembly decay heat, burnup, and cooling time for storage in the HI-STORM 100 System. The method to calculate the limits and verify compliance, including examples, is provided in Chapter 12 of the HI-STORM 100 FSAR.
2.4.1 Uniform Fuel Loading Decay Heat Limits for ZR-clad fuel Table 2.4-1 provides the maximum allowable decay heat per fuel storage location for ZR-clad fuel in uniform fuel loading for each MPC model.
Table 2.4-1 Maximum Allowable Decay Heat per Fuel Storage Location (Uniform Loading, ZR-Clad)
MPC Model Decay Heat per Fuel Storage Location (kW)
Intact or Undamaged Fuel Assemblies Damaged Fuel Assemblies and Fuel Debris MPC-24
< 1.416 Not Permitted MPC-24E/24EF
< 1.416
< 1.114 MPC-32/32F
< 1.062
< 0.718 MPC-68/68FF/68M
< 0.500
< 0.393 Renewed Amendment No. 10
Approved Contents 2.0 Certificate of Compliance No. 1014 Appendix B 2-49 2.4.2 Regionalized Fuel Loading Decay Heat Limits for ZR-Clad Fuel (Intact or Undamaged Fuel only)
The maximum allowable decay heat per fuel storage location for fuel 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 = q2 x X Where:
Q0 = Maximum uniform storage MPC decay heat (34 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 2.4-2.
n2 = Number of storage locations in outer region from Table 2.4-2.
Table 2.4-2 Fuel Storage Regions per MPC MPC Model Number of Storage Locations in Inner Region (Region 1)
Number of Storage Locations in Outer Region (Region 2)
MPC-24 and MPC-24E/EF 12 12 MPC-32/32F 12 20 MPC-68/68FF/68M 32 36 Renewed Amendment No. 10
Approved Contents 2.0 Certificate of Compliance No. 1014 Appendix B 2-50 2.4.3 Burnup Limits as a Function of Cooling Time for ZR-Clad Fuel The maximum allowable fuel assembly average burnup varies with the following parameters:
$ Minimum fuel assembly cooling time
$ Maximum fuel assembly decay heat
$ Minimum fuel assembly average enrichment The maximum allowable ZR-clad fuel assembly average burnup for a given MINIMUM ENRICHMENT is calculated as described below for minimum cooling times between 3 and 20 years using the maximum permissible decay heat determined in Section 2.4.1 or 2.4.2. Different fuel assembly average burnup limits may be calculated for different minimum enrichments (by individual fuel assembly) for use in choosing the fuel assemblies to be loaded into a given MPC.
2.4.3.1 Choose a fuel assembly minimum enrichment, E235.
2.4.3.2 Calculate the maximum allowable fuel assembly average burnup for a minimum cooling time between 3 and 20 years using the equation below.
Bu = (A x q) + (B x q2) + (C x q3) + [D x (E235)2] + (E x q x E235) + (F x q2 x E235) + G Where:
Bu = Maximum allowable average burnup per fuel assembly (MWD/MTU) q =
Maximum allowable decay heat per fuel storage location determined in Section 2.4.1 or 2.4.2 (kW)
E235 =Minimum fuel assembly average enrichment (wt. % 235U)
(e.g., for 4.05 wt.%, use 4.05)
A through G = Coefficients from Tables 2.4-3 and 2.4-4 for the applicable fuel assembly array/class and minimum cooling time 2.4.3.3 Calculated burnup limits shall be rounded down to the nearest integer.
2.4.3.4 Calculated burnup limits greater than 68,200 MWD/MTU for PWR fuel and 65,000 MWD/MTU for BWR must be reduced to be equal to these values.
2.4.3.5 Linear interpolation of calculated burnups between cooling times for a given fuel assembly maximum decay heat and minimum enrichment is permitted. For example, the allowable burnup for a cooling time of 4.5 years may be interpolated between those burnups calculated for 4 year and 5 years.
Renewed Amendment No. 10
Approved Contents 2.0 Certificate of Compliance No. 1014 Appendix B 2-51 2.4.3.6 Each ZR-clad fuel assembly to be stored must have a MINIMUM ENRICHMENT greater than or equal to the value used in Step 2.4.3.2.
2.4.4 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.
Renewed Amendment No. 10
Approved Contents 2.0 Certificate of Compliance No. 1014 Appendix B 2-52 Table 2.4-3 (Page 1 of 8)
PWR Fuel Assembly Cooling Time-Dependent Coefficients (ZR-Clad Fuel)
Cooling Time (years)
Array/Class 14x14A A
B C
D E
F G
> 3 19311.5 275.367
-59.0252
-139.41 2851.12
-451.845
-615.413
> 4 33865.9
-5473.03 851.121
-132.739 3408.58
-656.479
-609.523
> 5 46686.2
-13226.9 2588.39
-150.149 3871.87
-806.533
-90.2065
> 6 56328.9
-20443.2 4547.38
-176.815 4299.19
-927.358 603.192
> 7 64136
-27137.5 6628.18
-200.933 4669.22
-1018.94 797.162
> 8 71744.1
-34290.3 9036.9
-214.249 4886.95
-1037.59 508.703
> 9 77262
-39724.2 11061
-228.2 5141.35
-1102.05 338.294
> 10 82939.8
-45575.6 13320.2
-233.691 5266.25
-1095.94
-73.3159
> 11 86541
-49289.6 14921.7
-242.092 5444.54
-1141.6
-83.0603
> 12 91383
-54456.7 17107
-242.881 5528.7
-1149.2
-547.579
> 13 95877.6
-59404.7 19268
-240.36 5524.35
-1094.72
-933.64
> 14 97648.3
-61091.6 20261.7
-244.234 5654.56
-1151.47
-749.836
> 15 102533
-66651.5 22799.7
-240.858 5647.05
-1120.32
-1293.34
> 16 106216
-70753.8 24830.1
-237.04 5647.63
-1099.12
-1583.89
> 17 109863
-75005 27038
-234.299 5652.45
-1080.98
-1862.07
> 18 111460
-76482.3 28076.5
-234.426 5703.52
-1104.39
-1695.77
> 19 114916
-80339.6 30126.5
-229.73 5663.21
-1065.48
-1941.83
> 20 119592
-86161.5 33258.2
-227.256 5700.49
-1100.21
-2474.01 Renewed Amendment No. 10
Approved Contents 2.0 Certificate of Compliance No. 1014 Appendix B 2-53 Table 2.4-3 (Page 2 of 8)
PWR Fuel Assembly Cooling Time-Dependent Coefficients (ZR-Clad Fuel)
Cooling Time (years)
Array/Class 14x14B A
B C
D E
F G
> 3 18036.1 63.7639
-24.7251
-130.732 2449.87
-347.748
-858.192
> 4 30303.4
-4304.2 598.79
-118.757 2853.18
-486.453
-459.902
> 5 40779.6
-9922.93 1722.83
-138.174 3255.69
-608.267 245.251
> 6 48806.7
-15248.9 3021.47
-158.69 3570.24
-689.876 833.917
> 7 55070.5
-19934.6 4325.62
-179.964 3870.33
-765.849 1203.89
> 8 60619.6
-24346 5649.29
-189.701 4042.23
-795.324 1158.12
> 9 64605.7
-27677.1 6778.12
-205.459 4292.35
-877.966 1169.88
> 10 69083.8
-31509.4 8072.42
-206.157 4358.01
-875.041 856.449
> 11 72663.2
-34663.9 9228.96
-209.199 4442.68
-889.512 671.567
> 12 74808.9
-36367 9948.88
-214.344 4571.29
-942.418 765.261
> 13 78340.3
-39541.1 11173.8
-212.8 4615.06
-957.833 410.807
> 14 81274.8
-42172.3 12259.9
-209.758 4626.13
-958.016 190.59
> 15 83961.4
-44624.5 13329.1
-207.697 4632.16
-952.876 20.8575
> 16 84968.5
-44982.1 13615.8
-207.171 4683.41
-992.162 247.54
> 17 87721.6
-47543.1 14781.4
-203.373 4674.3
-988.577 37.9689
> 18 90562.9
-50100.4 15940.4
-198.649 4651.64
-982.459
-247.421
> 19 93011.6
-52316.6 17049.9
-194.964 4644.76
-994.63
-413.021
> 20 95567.8
-54566.6 18124
-190.22 4593.92
-963.412
-551.983 Renewed Amendment No. 10
Approved Contents 2.0 Certificate of Compliance No. 1014 Appendix B 2-54 Table 2.4-3 (Page 3 of 8)
PWR Fuel Assembly Cooling Time-Dependent Coefficients (ZR-Clad Fuel)
Cooling Time (years)
Array/Class 14x14C A
B C
D E
F G
> 3 18263.7 174.161
-57.6694
-138.112 2539.74
-369.764
-1372.33
> 4 30514.5
-4291.52 562.37
-124.944 2869.17
-481.139
-889.883
> 5 41338
-10325.7 1752.96
-141.247 3146.48
-535.709
-248.078
> 6 48969.7
-15421.3 2966.33
-163.574 3429.74
-587.225 429.331
> 7 55384.6
-20228.9 4261.47
-180.846 3654.55
-617.255 599.251
> 8 60240.2
-24093.2 5418.86
-199.974 3893.72
-663.995 693.934
> 9 64729
-27745.7 6545.45
-205.385 3986.06
-650.124 512.528
> 10 68413.7
-30942.2 7651.29
-216.408 4174.71
-702.931 380.431
> 11 71870.6
-33906.7 8692.81
-218.813 4248.28
-704.458 160.645
> 12 74918.4
-36522 9660.01
-218.248 4283.68
-696.498
-29.0682
> 13 77348.3
-38613.7 10501.8
-220.644 4348.23
-702.266
-118.646
> 14 79817.1
-40661.8 11331.2
-218.711 4382.32
-710.578
-236.123
> 15 82354.2
-42858.3 12257.3
-215.835 4405.89
-718.805
-431.051
> 16 84787.2
-44994.5 13185.9
-213.386 4410.99
-711.437
-572.104
> 17 87084.6
-46866.1 14004.8
-206.788 4360.3
-679.542
-724.721
> 18 88083.1
-47387.1 14393.4
-208.681 4420.85
-709.311
-534.454
> 19 90783.6
-49760.6 15462.7
-203.649 4403.3
-705.741
-773.066
> 20 93212
-51753.3 16401.5
-197.232 4361.65
-692.925
-964.628 Renewed Amendment No. 10
Approved Contents 2.0 Certificate of Compliance No. 1014 Appendix B 2-55 Table 2.4-3 (Page 4 of 8)
PWR Fuel Assembly Cooling Time-Dependent Coefficients (ZR-Clad Fuel)
Cooling Time (years)
Array/Class 15x15A/B/C A
B C
D E
F G
> 3 15037.3 108.689
-18.8378
-127.422 2050.02
-242.828
-580.66
> 4 25506.6
-2994.03 356.834
-116.45 2430.25
-350.901
-356.378
> 5 34788.8
-7173.07 1065.9
-124.785 2712.23
-424.681 267.705
> 6 41948.6
-11225.3 1912.12
-145.727 3003.29
-489.538 852.112
> 7 47524.9
-14770.9 2755.16
-165.889 3253.9
-542.7 1146.96
> 8 52596.9
-18348.8 3699.72
-177.17 3415.69
-567.012 1021.41
> 9 56055.4
-20837.1 4430.93
-192.168 3625.93
-623.325 1058.61
> 10 59611.3
-23402.1 5179.52
-195.105 3699.18
-626.448 868.517
> 11 62765.3
-25766.5 5924.71
-195.57 3749.91
-627.139 667.124
> 12 65664.4
-28004.8 6670.75
-195.08 3788.33
-628.904 410.783
> 13 67281.7
-29116.7 7120.59
-202.817 3929.38
-688.738 492.309
> 14 69961.4
-31158.6 7834.02
-197.988 3917.29
-677.565 266.561
> 15 72146
-32795.7 8453.67
-195.083 3931.47
-681.037 99.0606
> 16 74142.6
-34244.8 9023.57
-190.645 3905.54
-663.682 10.8885
> 17 76411.4
-36026.3 9729.98
-188.874 3911.21
-663.449
-151.805
> 18 77091
-36088 9884.09
-188.554 3965.08
-708.55 59.3839
> 19 79194.5
-37566.4 10477.5
-181.656 3906.93
-682.4
-117.952
> 20 81600.4
-39464.5 11281.9
-175.182 3869.49
-677.179
-367.705 Renewed Amendment No. 10
Approved Contents 2.0 Certificate of Compliance No. 1014 Appendix B 2-56 Table 2.4-3 (Page 5 of 8)
PWR Fuel Assembly Cooling Time-Dependent Coefficients (ZR-Clad Fuel)
Cooling Time (years)
Array/Class 15x15D/E/F/H/I A
B C
D E
F G
> 3 14376.7 102.205
-20.6279
-126.017 1903.36
-210.883
-493.065
> 4 24351.4
-2686.57 297.975
-110.819 2233.78
-301.615
-152.713
> 5 33518.4
-6711.35 958.544
-122.85 2522.7
-371.286 392.608
> 6 40377
-10472.4 1718.53
-144.535 2793.29
-426.436 951.528
> 7 46105.8
-13996.2 2515.32
-157.827 2962.46
-445.314 1100.56
> 8 50219.7
-16677.7 3198.3
-175.057 3176.74
-492.727 1223.62
> 9 54281.2
-19555.6 3983.47
-181.703 3279.03
-499.997 1034.55
> 10 56761.6
-21287.3 4525.98
-195.045 3470.41
-559.074 1103.3
> 11 59820
-23445.2 5165.43
-194.997 3518.23
-561.422 862.68
> 12 62287.2
-25164.6 5709.9
-194.771 3552.69
-561.466 680.488
> 13 64799
-27023.7 6335.16
-192.121 3570.41
-561.326 469.583
> 14 66938.7
-28593.1 6892.63
-194.226 3632.92
-583.997 319.867
> 15 68116.5
-29148.6 7140.09
-192.545 3670.39
-607.278 395.344
> 16 70154.9
-30570.1 7662.91
-187.366 3649.14
-597.205 232.318
> 17 72042.5
-31867.6 8169.01
-183.453 3646.92
-603.907 96.0388
> 18 73719.8
-32926.1 8596.12
-177.896 3614.57
-592.868 46.6774
> 19 75183.1
-33727.4 8949.64
-172.386 3581.13
-586.347 3.57256
> 20 77306.1
-35449 9690.02
-173.784 3636.87
-626.321
-205.513 Renewed Amendment No. 10
Approved Contents 2.0 Certificate of Compliance No. 1014 Appendix B 2-57 Table 2.4-3 (Page 6 of 8)
PWR Fuel Assembly Cooling Time-Dependent Coefficients (ZR-Clad Fuel)
Cooling Time (years)
Array/Class 16X16A A
B C
D E
F G
> 3 16226.8 143.714
-32.4809
-136.707 2255.33
-291.683
-699.947
> 4 27844.2
-3590.69 444.838
-124.301 2644.09
-411.598
-381.106
> 5 38191.5
-8678.48 1361.58
-132.855 2910.45
-473.183 224.473
> 6 46382.2
-13819.6 2511.32
-158.262 3216.92
-532.337 706.656
> 7 52692.3
-18289 3657.18
-179.765 3488.3
-583.133 908.839
> 8 57758.7
-22133.7 4736.88
-199.014 3717.42
-618.83 944.903
> 9 62363.3
-25798.7 5841.18
-207.025 3844.38
-625.741 734.928
> 10 66659.1
-29416.3 6993.31
-216.458 3981.97
-642.641 389.366
> 11 69262.7
-31452.7 7724.66
-220.836 4107.55
-681.043 407.121
> 12 72631.5
-34291.9 8704.8
-219.929 4131.5
-662.513 100.093
> 13 75375.3
-36589.3 9555.88
-217.994 4143.15
-644.014
-62.3294
> 14 78178.7
-39097.1 10532
-221.923 4226.28
-667.012
-317.743
> 15 79706.3
-40104 10993.3
-218.751 4242.12
-670.665
-205.579
> 16 82392.6
-42418.9 11940.7
-216.278 4274.09
-689.236
-479.752
> 17 84521.8
-44150.5 12683.3
-212.056 4245.99
-665.418
-558.901
> 18 86777.1
-45984.8 13479
-204.867 4180.8
-621.805
-716.366
> 19 89179.7
-48109.8 14434.5
-206.484 4230.03
-648.557
-902.1
> 20 90141.7
-48401.4 14702.6
-203.284 4245.54
-670.655
-734.604 Renewed Amendment No. 10
Approved Contents 2.0 Certificate of Compliance No. 1014 Appendix B 2-58 Table 2.4-3 (Page 7 of 8)
PWR Fuel Assembly Cooling Time-Dependent Coefficients (ZR-Clad Fuel)
Cooling Time (years)
Array/Class 17x17A/16x16B/C A
B C
D E
F G
> 3 15985.1 3.53963
-9.04955
-128.835 2149.5
-260.415
-262.997
> 4 27532.9
-3494.41 428.199
-119.504 2603.01
-390.91
-140.319
> 5 38481.2
-8870.98 1411.03
-139.279 3008.46
-492.881 388.377
> 6 47410.9
-14479.6 2679.08
-162.13 3335.48
-557.777 702.164
> 7 54596.8
-19703.2 4043.46
-181.339 3586.06
-587.634 804.05
> 8 60146.1
-24003.4 5271.54
-201.262 3830.32
-621.706 848.454
> 9 65006.3
-27951 6479.04
-210.753 3977.69
-627.805 615.84
> 10 69216
-31614.7 7712.58
-222.423 4173.4
-672.33 387.879
> 11 73001.3
-34871.1 8824.44
-225.128 4238.28
-657.259 101.654
> 12 76326.1
-37795.9 9887.35
-226.731 4298.11
-647.55
-122.236
> 13 78859.9
-40058.9 10797.1
-231.798 4402.14
-669.982
-203.383
> 14 82201.3
-43032.5 11934.1
-228.162 4417.99
-661.61
-561.969
> 15 84950
-45544.6 12972.4
-225.369 4417.84
-637.422
-771.254
> 16 87511.8
-47720 13857.7
-219.255 4365.24
-585.655
-907.775
> 17 90496.4
-50728.9 15186
-223.019 4446.51
-613.378
-1200.94
> 18 91392.5
-51002.4 15461.4
-220.272 4475.28
-636.398
-1003.81
> 19 94343.9
-53670.8 16631.6
-214.045 4441.31
-616.201
-1310.01
> 20 96562.9
-55591.2 17553.4
-209.917 4397.67
-573.199
-1380.64 Renewed Amendment No. 10
Approved Contents 2.0 Certificate of Compliance No. 1014 Appendix B 2-59 Table 2.4-3 (Page 8 of 8)
PWR Fuel Assembly Cooling Time-Dependent Coefficients (ZR-Clad Fuel)
Cooling Time (years)
Array/Class 17x17B/C A
B C
D E
F G
> 3 14738 47.5402
-13.8187
-127.895 1946.58
-219.289
-389.029
> 4 25285.2
-3011.92 350.116
-115.75 2316.89
-319.23
-220.413
> 5 34589.6
-7130.34 1037.26
-128.673 2627.27
-394.58 459.642
> 6 42056.2
-11353.7 1908.68
-150.234 2897.38
-444.316 923.971
> 7 47977.6
-15204.8 2827.4
-173.349 3178.25
-504.16 1138.82
> 8 52924
-18547.6 3671.08
-183.025 3298.64
-501.278 1064.68
> 9 56465.5
-21139.4 4435.67
-200.386 3538
-569.712 1078.78
> 10 60190.9
-23872.7 5224.31
-203.233 3602.88
-562.312 805.336
> 11 63482.1
-26431.1 6035.79
-205.096 3668.84
-566.889 536.011
> 12 66095
-28311.8 6637.72
-204.367 3692.68
-555.305 372.223
> 13 67757.4
-29474.4 7094.08
-211.649 3826.42
-606.886 437.412
> 14 70403.7
-31517.4 7807.15
-207.668 3828.69
-601.081 183.09
> 15 72506.5
-33036.1 8372.59
-203.428 3823.38
-594.995 47.5175
> 16 74625.2
-34620.5 8974.32
-199.003 3798.57
-573.098
-95.0221
> 17 76549
-35952.6 9498.14
-193.459 3766.52
-556.928
-190.662
> 18 77871.9
-36785.5 9916.91
-195.592 3837.65
-599.45
-152.261
> 19 79834.8
-38191.6 10501.9
-190.83 3812.46
-589.635
-286.847
> 20 81975.5
-39777.2 11174.5
-185.767 3795.78
-595.664
-475.978 Renewed Amendment No. 10
Approved Contents 2.0 Certificate of Compliance No. 1014 Appendix B 2-60 Table 2.4-4 (Page 1 of 10)
BWR Fuel Assembly Cooling Time-Dependent Coefficients (ZR-Clad Fuel)
Cooling Time (years)
Array/Class 7x7B & 10x10F A
B C
D E
F G
> 3 26409.1 28347.5
-16858
-147.076 5636.32
-1606.75 1177.88
> 4 61967.8
-6618.31
-4131.96
-113.949 6122.77
-2042.85
-96.7439
> 5 91601.1
-49298.3 17826.5
-132.045 6823.14
-2418.49
-185.189
> 6 111369
-80890.1 35713.8
-150.262 7288.51
-2471.1 86.6363
> 7 126904
-108669 53338.1
-167.764 7650.57
-2340.78 150.403
> 8 139181
-132294 69852.5
-187.317 8098.66
-2336.13 97.5285
> 9 150334
-154490 86148.1
-193.899 8232.84
-2040.37
-123.029
> 10 159897
-173614 100819
-194.156 8254.99
-1708.32
-373.605
> 11 166931
-186860 111502
-193.776 8251.55
-1393.91
-543.677
> 12 173691
-201687 125166
-202.578 8626.84
-1642.3
-650.814
> 13 180312
-215406 137518
-201.041 8642.19
-1469.45
-810.024
> 14 185927
-227005 148721
-197.938 8607.6
-1225.95
-892.876
> 15 191151
-236120 156781
-191.625 8451.86
-846.27
-1019.4
> 16 195761
-244598 165372
-187.043 8359.19
-572.561
-1068.19
> 17 200791
-256573 179816
-197.26 8914.28
-1393.37
-1218.63
> 18 206068
-266136 188841
-187.191 8569.56
-730.898
-1363.79
> 19 210187
-273609 197794
-182.151 8488.23
-584.727
-1335.59
> 20 213731
-278120 203074
-175.864 8395.63
-457.304
-1364.38 Renewed Amendment No. 10
Approved Contents 2.0 Certificate of Compliance No. 1014 Appendix B 2-61 Table 2.4-4 (Page 2 of 10)
BWR Fuel Assembly Cooling Time-Dependent Coefficients (ZR-Clad Fuel)
Cooling Time (years)
Array/Class 8x8B A
B C
D E
F G
> 3 28219.6 28963.7
-17616.2
-147.68 5887.41
-1730.96 1048.21
> 4 66061.8
-10742.4
-1961.82
-123.066 6565.54
-2356.05
-298.005
> 5 95790.7
-53401.7 19836.7
-134.584 7145.41
-2637.09
-298.858
> 6 117477
-90055.9 41383.9
-154.758 7613.43
-2612.69
-64.9921
> 7 134090
-120643 60983
-168.675 7809
-2183.3
-40.8885
> 8 148186
-149181 81418.7
-185.726 8190.07
-2040.31
-260.773
> 9 159082
-172081 99175.2
-197.185 8450.86
-1792.04
-381.705
> 10 168816
-191389 113810
-195.613 8359.87
-1244.22
-613.594
> 11 177221
-210599 131099
-208.3 8810
-1466.49
-819.773
> 12 183929
-224384 143405
-207.497 8841.33
-1227.71
-929.708
> 13 191093
-240384 158327
-204.95 8760.17
-811.708
-1154.76
> 14 196787
-252211 169664
-204.574 8810.95
-610.928
-1208.97
> 15 203345
-267656 186057
-208.962 9078.41
-828.954
-1383.76
> 16 207973
-276838 196071
-204.592 9024.17
-640.808
-1436.43
> 17 213891
-290411 211145
-202.169 9024.19
-482.1
-1595.28
> 18 217483
-294066 214600
-194.243 8859.35
-244.684
-1529.61
> 19 220504
-297897 219704
-190.161 8794.97
-10.9863
-1433.86
> 20 227821
-318395 245322
-194.682 9060.96
-350.308
-1741.16 Renewed Amendment No. 10
Approved Contents 2.0 Certificate of Compliance No. 1014 Appendix B 2-62 Table 2.4-4 (Page 3 of 10)
BWR Fuel Assembly Cooling Time-Dependent Coefficients (ZR-Clad Fuel)
Cooling Time (years)
Array/Class 8x8C/D/E A
B C
D E
F G
> 3 28592.7 28691.5
-17773.6
-149.418 5969.45
-1746.07 1063.62
> 4 66720.8
-12115.7
-1154
-128.444 6787.16
-2529.99
-302.155
> 5 96929.1
-55827.5 21140.3
-136.228 7259.19
-2685.06
-334.328
> 6 118190
-92000.2 42602.5
-162.204 7907.46
-2853.42
-47.5465
> 7 135120
-123437 62827.1
-172.397 8059.72
-2385.81
-75.0053
> 8 149162
-152986 84543.1
-195.458 8559.11
-2306.54
-183.595
> 9 161041
-177511 103020
-200.087 8632.84
-1864.4
-433.081
> 10 171754
-201468 122929
-209.799 8952.06
-1802.86
-755.742
> 11 179364
-217723 137000
-215.803 9142.37
-1664.82
-847.268
> 12 186090
-232150 150255
-216.033 9218.36
-1441.92
-975.817
> 13 193571
-249160 165997
-213.204 9146.99
-1011.13
-1119.47
> 14 200034
-263671 180359
-210.559 9107.54
-694.626
-1312.55
> 15 205581
-275904 193585
-216.242 9446.57
-1040.65
-1428.13
> 16 212015
-290101 207594
-210.036 9212.93
-428.321
-1590.7
> 17 216775
-299399 218278
-204.611 9187.86
-398.353
-1657.6
> 18 220653
-306719 227133
-202.498 9186.34
-181.672
-1611.86
> 19 224859
-314004 235956
-193.902 8990.14 145.151
-1604.71
> 20 228541
-320787 245449
-200.727 9310.87
-230.252
-1570.18 Renewed Amendment No. 10
Approved Contents 2.0 Certificate of Compliance No. 1014 Appendix B 2-63 Table 2.4-4 (Page 4 of 10)
BWR Fuel Assembly Cooling Time-Dependent Coefficients (ZR-Clad Fuel)
Cooling Time (years)
Array/Class 9x9A A
B C
D E
F G
> 3 30538.7 28463.2
-18105.5
-150.039 6226.92
-1876.69 1034.06
> 4 71040.1
-16692.2 1164.15
-128.241 7105.27
-2728.58
-414.09
> 5 100888
-60277.7 24150.1
-142.541 7896.11
-3272.86
-232.197
> 6 124846
-102954 50350.8
-161.849 8350.16
-3163.44
-91.1396
> 7 143516
-140615 76456.5
-185.538 8833.04
-2949.38
-104.802
> 8 158218
-171718 99788.2
-196.315 9048.88
-2529.26
-259.929
> 9 172226
-204312 126620
-214.214 9511.56
-2459.19
-624.954
> 10 182700
-227938 146736
-215.793 9555.41
-1959.92
-830.943
> 11 190734
-246174 163557
-218.071 9649.43
-1647.5
-935.021
> 12 199997
-269577 186406
-223.975 9884.92
-1534.34
-1235.27
> 13 207414
-287446 204723
-228.808 10131.7
-1614.49
-1358.61
> 14 215263
-306131 223440
-220.919 9928.27
-988.276
-1638.05
> 15 221920
-321612 239503
-217.949 9839.02
-554.709
-1784.04
> 16 226532
-331778 252234
-216.189 9893.43
-442.149
-1754.72
> 17 232959
-348593 272609
-219.907 10126.3
-663.84
-1915.3
> 18 240810
-369085 296809
-219.729 10294.6
-859.302
-2218.87
> 19 244637
-375057 304456
-210.997 10077.8
-425.446
-2127.83
> 20 248112
-379262 309391
-204.191 9863.67 100.27
-2059.39 Renewed Amendment No. 10
Approved Contents 2.0 Certificate of Compliance No. 1014 Appendix B 2-64 Table 2.4-4 (Page 5 of 10)
BWR Fuel Assembly Cooling Time-Dependent Coefficients (ZR-Clad Fuel)
Cooling Time (years)
Array/Class 9x9B A
B C
D E
F G
> 3 30613.2 28985.3
-18371
-151.117 6321.55
-1881.28 988.92
> 4 71346.6
-15922.9 631.132
-128.876 7232.47
-2810.64
-471.737
> 5 102131
-60654.1 23762.7
-140.748 7881.6
-3156.38
-417.979
> 6 127187
-105842 51525.2
-162.228 8307.4
-2913.08
-342.13
> 7 146853
-145834 79146.5
-185.192 8718.74
-2529.57
-484.885
> 8 162013
-178244 103205
-197.825 8896.39
-1921.58
-584.013
> 9 176764
-212856 131577
-215.41 9328.18
-1737.12
-1041.11
> 10 186900
-235819 151238
-218.98 9388.08
-1179.87
-1202.83
> 11 196178
-257688 171031
-220.323 9408.47
-638.53
-1385.16
> 12 205366
-280266 192775
-223.715 9592.12
-472.261
-1661.6
> 13 215012
-306103 218866
-231.821 9853.37
-361.449
-1985.56
> 14 222368
-324558 238655
-228.062 9834.57 3.47358
-2178.84
> 15 226705
-332738 247316
-224.659 9696.59 632.172
-2090.75
> 16 233846
-349835 265676
-221.533 9649.93 913.747
-2243.34
> 17 243979
-379622 300077
-222.351 9792.17 1011.04
-2753.36
> 18 247774
-386203 308873
-220.306 9791.37 1164.58
-2612.25
> 19 254041
-401906 327901
-213.96 9645.47 1664.94
-2786.2
> 20 256003
-402034 330566
-215.242 9850.42 1359.46
-2550.06 Renewed Amendment No. 10
Approved Contents 2.0 Certificate of Compliance No. 1014 Appendix B 2-65 Table 2.4-4 (Page 6 of 10)
BWR Fuel Assembly Cooling Time-Dependent Coefficients (ZR-Clad Fuel)
Cooling Time (years)
Array/Class 9x9C/D A
B C
D E
F G
> 3 30051.6 29548.7
-18614.2
-148.276 6148.44
-1810.34 1006
> 4 70472.7
-14696.6
-233.567
-127.728 7008.69
-2634.22
-444.373
> 5 101298
-59638.9 23065.2
-138.523 7627.57
-2958.03
-377.965
> 6 125546
-102740 49217.4
-160.811 8096.34
-2798.88
-259.767
> 7 143887
-139261 74100.4
-184.302 8550.86
-2517.19
-275.151
> 8 159633
-172741 98641.4
-194.351 8636.89
-1838.81
-486.731
> 9 173517
-204709 124803
-212.604 9151.98
-1853.27
-887.137
> 10 182895
-225481 142362
-218.251 9262.59
-1408.25
-978.356
> 11 192530
-247839 162173
-217.381 9213.58
-818.676
-1222.12
> 12 201127
-268201 181030
-215.552 9147.44
-232.221
-1481.55
> 13 209538
-289761 203291
-225.092 9588.12
-574.227
-1749.35
> 14 216798
-306958 220468
-222.578 9518.22
-69.9307
-1919.71
> 15 223515
-323254 237933
-217.398 9366.52 475.506
-2012.93
> 16 228796
-334529 250541
-215.004 9369.33 662.325
-2122.75
> 17 237256
-356311 273419
-206.483 9029.55 1551.3
-2367.96
> 18 242778
-369493 290354
-215.557 9600.71 659.297
-2589.32
> 19 246704
-377971 302630
-210.768 9509.41 1025.34
-2476.06
> 20 249944
-382059 308281
-205.495 9362.63 1389.71
-2350.49 Renewed Amendment No. 10
Approved Contents 2.0 Certificate of Compliance No. 1014 Appendix B 2-66 Table 2.4-4 (Page 7 of 10)
BWR Fuel Assembly Cooling Time-Dependent Coefficients (ZR-Clad Fuel)
Cooling Time (years)
Array/Class 9x9E/F A
B C
D E
F G
> 3 30284.3 26949.5
-16926.4
-147.914 6017.02
-1854.81 1026.15
> 4 69727.4
-17117.2 1982.33
-127.983 6874.68
-2673.01
-359.962
> 5 98438.9
-58492 23382.2
-138.712 7513.55
-3038.23
-112.641
> 6 119765
-95024.1 45261
-159.669 8074.25
-3129.49 221.182
> 7 136740
-128219 67940.1
-182.439 8595.68
-3098.17 315.544
> 8 150745
-156607 88691.5
-193.941 8908.73
-2947.64 142.072
> 9 162915
-182667 109134
-198.37 8999.11
-2531
-93.4908
> 10 174000
-208668 131543
-210.777 9365.52
-2511.74
-445.876
> 11 181524
-224252 145280
-212.407 9489.67
-2387.49
-544.123
> 12 188946
-240952 160787
-210.65 9478.1
-2029.94
-652.339
> 13 193762
-250900 171363
-215.798 9742.31
-2179.24
-608.636
> 14 203288
-275191 196115
-218.113 9992.5
-2437.71
-1065.92
> 15 208108
-284395 205221
-213.956 9857.25
-1970.65
-1082.94
> 16 215093
-301828 224757
-209.736 9789.58
-1718.37
-1303.35
> 17 220056
-310906 234180
-201.494 9541.73
-1230.42
-1284.15
> 18 224545
-320969 247724
-206.807 9892.97
-1790.61
-1381.9
> 19 226901
-322168 250395
-204.073 9902.14
-1748.78
-1253.22
> 20 235561
-345414 276856
-198.306 9720.78
-1284.14
-1569.18 Renewed Amendment No. 10
Approved Contents 2.0 Certificate of Compliance No. 1014 Appendix B 2-67 Table 2.4-4 (Page 8 of 10)
BWR Fuel Assembly Cooling Time-Dependent Coefficients (ZR-Clad Fuel)
Cooling Time (years)
Array/Class 9x9G A
B C
D E
F G
> 3 35158.5 26918.5
-17976.7
-149.915 6787.19
-2154.29 836.894
> 4 77137.2
-19760.1 2371.28
-130.934 8015.43
-3512.38
-455.424
> 5 113405
-77931.2 35511.2
-150.637 8932.55
-4099.48
-629.806
> 6 139938
-128700 68698.3
-173.799 9451.22
-3847.83
-455.905
> 7 164267
-183309 109526
-193.952 9737.91
-3046.84
-737.992
> 8 182646
-227630 146275
-210.936 10092.3
-2489.3
-1066.96
> 9 199309
-270496 184230
-218.617 10124.3
-1453.81
-1381.41
> 10 213186
-308612 221699
-235.828 10703.2
-1483.31
-1821.73
> 11 225587
-342892 256242
-236.112 10658.5
-612.076
-2134.65
> 12 235725
-370471 285195
-234.378 10604.9 118.591
-2417.89
> 13 247043
-404028 323049
-245.79 11158.2
-281.813
-2869.82
> 14 253649
-421134 342682
-243.142 11082.3 400.019
-2903.88
> 15 262750
-448593 376340
-245.435 11241.2 581.355
-3125.07
> 16 270816
-470846 402249
-236.294 10845.4 1791.46
-3293.07
> 17 279840
-500272 441964
-241.324 11222.6 1455.84
-3528.25
> 18 284533
-511287 458538
-240.905 11367.2 1459.68
-3520.94
> 19 295787
-545885 501824
-235.685 11188.2 2082.21
-3954.2
> 20 300209
-556936 519174
-229.539 10956 2942.09
-3872.87 Renewed Amendment No. 10
Approved Contents 2.0 Certificate of Compliance No. 1014 Appendix B 2-68 Table 2.4-4 (Page 9 of 10)
BWR Fuel Assembly Cooling Time-Dependent Coefficients (ZR-Clad Fuel)
Cooling Time (years)
Array/Class 10x10A/B/G A
B C
D E
F G
> 3 29285.4 27562.2
-16985
-148.415 5960.56
-1810.79 1001.45
> 4 67844.9
-14383 395.619
-127.723 6754.56
-2547.96
-369.267
> 5 96660.5
-55383.8 21180.4
-137.17 7296.6
-2793.58
-192.85
> 6 118098
-91995 42958
-162.985 7931.44
-2940.84 60.9197
> 7 135115
-123721 63588.9
-171.747 8060.23
-2485.59 73.6219
> 8 148721
-151690 84143.9
-190.26 8515.81
-2444.25
-63.4649
> 9 160770
-177397 104069
-197.534 8673.6
-2101.25
-331.046
> 10 170331
-198419 121817
-213.692 9178.33
-2351.54
-472.844
> 11 179130
-217799 138652
-209.75 9095.43
-1842.88
-705.254
> 12 186070
-232389 151792
-208.946 9104.52
-1565.11
-822.73
> 13 192407
-246005 164928
-209.696 9234.7
-1541.54
-979.245
> 14 200493
-265596 183851
-207.639 9159.83
-1095.72
-1240.61
> 15 205594
-276161 195760
-213.491 9564.23
-1672.22
-1333.64
> 16 209386
-282942 204110
-209.322 9515.83
-1506.86
-1286.82
> 17 214972
-295149 217095
-202.445 9292.34
-893.6
-1364.97
> 18 219312
-302748 225826
-198.667 9272.27
-878.536
-1379.58
> 19 223481
-310663 235908
-194.825 9252.9
-785.066
-1379.62
> 20 227628
-319115 247597
-199.194 9509.02
-1135.23
-1386.19 Renewed Amendment No. 10
Approved Contents 2.0 Certificate of Compliance No. 1014 Appendix B 2-69 Table 2.4-4 (Page 10 of 10)
BWR Fuel Assembly Cooling Time-Dependent Coefficients (ZR-Clad Fuel)
Cooling Time (years)
Array/Class 10x10C A
B C
D E
F G
> 3 31425.3 27358.9
-17413.3
-152.096 6367.53
-1967.91 925.763
> 4 71804
-16964.1 1000.4
-129.299 7227.18
-2806.44
-416.92
> 5 102685
-62383.3 24971.2
-142.316 7961
-3290.98
-354.784
> 6 126962
-105802 51444.6
-164.283 8421.44
-3104.21
-186.615
> 7 146284
-145608 79275.5
-188.967 8927.23
-2859.08
-251.163
> 8 162748
-181259 105859
-199.122 9052.91
-2206.31
-554.124
> 9 176612
-214183 133261
-217.56 9492.17
-1999.28
-860.669
> 10 187756
-239944 155315
-219.56 9532.45
-1470.9
-1113.42
> 11 196580
-260941 174536
-222.457 9591.64
-944.473
-1225.79
> 12 208017
-291492 204805
-233.488 10058.3
-1217.01
-1749.84
> 13 214920
-307772 221158
-234.747 10137.1
-897.23
-1868.04
> 14 222562
-326471 240234
-228.569 9929.34
-183.47
-2016.12
> 15 228844
-342382 258347
-226.944 9936.76 117.061
-2106.05
> 16 233907
-353008 270390
-223.179 9910.72 360.39
-2105.23
> 17 244153
-383017 304819
-227.266 10103.2 380.393
-2633.23
> 18 249240
-395456 321452
-226.989 10284.1 169.947
-2623.67
> 19 254343
-406555 335240
-220.569 10070.5 764.689
-2640.2
> 20 260202
-421069 354249
-216.255 10069.9 854.497
-2732.77 Renewed Amendment No. 10
Design Features 3.0 Certificate of Compliance No. 1014 Appendix B 3-1 3.0 DESIGN FEATURES 3.1 Site 3.1.1 Site Location The HI-STORM 100 Cask System is authorized for use at various site locations under the general license provisions of 10 CFR 72, Subpart K.
3.2 Design Features Important for Criticality Control 3.2.1 MPC-24 1.
Flux trap size: 1.09 in.
2.
10B loading in the neutron absorbers: 0.0267 g/cm2 (Boral) and 0.0223 g/cm2 (METAMIC) 3.2.2 MPC-68 and MPC-68FF 1.
Fuel cell pitch: 6.43 in.
2.
10B loading in the neutron absorbers: 0.0372 g/cm2 (Boral) and 0.0310 g/cm2 (METAMIC) 3.2.3 MPC-68F 1.
Fuel cell pitch: 6.43 in.
2.
10B loading in the Boral neutron absorbers: 0.01 g/cm2 3.2.4 MPC-24E and MPC-24EF 1.
Flux trap size:
- i. Cells 3, 6, 19, and 22: 0.776 inch ii. All Other Cells: 1.076 inches 2.
10B loading in the neutron absorbers: 0.0372 g/cm2 (Boral) and 0.0310 g/cm2 (METAMIC) 3.2.5 MPC-32 and MPC-32F 1.
Fuel cell pitch: 9.158 inches 2.
10B loading in the neutron absorbers: 0.0372 g/cm2 (Boral) and 0.0310 g/cm2 (METAMIC)
Renewed Amendment No. 10
Design Features 3.0 Certificate of Compliance No. 1014 Appendix B 3-2 DESIGN FEATURES 3.2 Design features Important for Criticality Control (contd) 3.2.6 MPC-68M
- 1. Basket Cell wall thickness 0.4 in. (nom.)
- 2. B4C content in METAMIC-HT shall be 10 wt. %
3.2.7 Fuel spacers shall be sized to ensure that the active fuel region of intact or undamaged fuel assemblies remains within the neutron poison region of the MPC basket with water in the MPC.
3.2.8 The B4C content in METAMIC shall be 33.0 wt.%.
3.2.9 Neutron Absorber Tests Boral and Metamic Classic Section 9.1.5.3 of the HI-STORM 100 FSAR is hereby incorporated by reference into the HI-STORM 100 CoC. For each MPC model specified in Sections 3.2.1 through 3.2.5 above, the neutron absorber shall meet the minimum requirements for 10B areal density or B4C content, as applicable.
Metamic-HT (Section 3.2.6 above)
- 1. The weight percentage of the boron carbide must be confirmed to be greater than or equal to 10% in each lot of Al/B4C powder.
- 2. The areal density of the B-10 isotope corresponding to the 10% min.
weight density in the manufactured Metamic-HT panels shall be independently confirmed by the neutron attenuation test method by testing at least one coupon from a randomly selected panel in each lot.
- 3. If the B-10 areal density criterion in the tested panels fails to meet the specific minimum, then the manufacturer has the option to reject the entire lot or to test a statistically significant number of panels and perform statistical analysis for acceptance.
- 4. All test procedures used in demonstrating compliance with the above requirements shall conform to the cask designers QA program which has been approved by the USNRC under docket number 71-0784.
3.3 Codes and Standards The American Society of Mechanical Engineers Boiler and Pressure Vessel Code (ASME Code), 1995 Edition with Addenda through 1997, is the governing Code for the HI-STORM 100 System MPCs, OVERPACKs, and TRANSFER CASKs, as clarified in Specification 3.3.1 below, except for Code Sections V and IX. The latest effective editions of ASME Code Sections V and IX, including addenda, may be used for activities governed by those sections, provided a written reconciliation of the later edition against the 1995 Edition, including addenda, is performed by the certificate holder. American Concrete Renewed Amendment No. 10
Design Features 3.0 Certificate of Compliance No. 1014 Appendix B 3-3 Institute (ACI) 349-85 is the governing Code for plain concrete as clarified in Appendix 1.D of the Final Safety Analysis Report for the HI-STORM 100 Cask System.
(continued)
Renewed Amendment No. 10
Design Features 3.0 Certificate of Compliance No. 1014 Appendix B 3-4 DESIGN FEATURES 3.3.1 Alternatives to Codes, Standards, and Criteria Table 3-1 lists approved alternatives to the ASME Code for the design of the MPCs, OVERPACKs, and TRANSFER CASKs of the HI-STORM 100 Cask System.
3.3.2 Construction/Fabrication Alternatives to Codes, Standards, and Criteria Proposed alternatives to the ASME Code,Section III, 1995 Edition with Addenda through 1997 including modifications to the alternatives allowed by Specification 3.3.1 may be used on a case-specific basis when authorized by the Director of the Office of Nuclear Material Safety and Safeguards or designee. The request for such alternative should demonstrate that:
1.
The proposed alternatives would provide an acceptable level of quality and safety, or 2.
Compliance with the specified requirements of the ASME Code,Section III, 1995 Edition with Addenda through 1997, would result in hardship or unusual difficulty without a compensating increase in the level of quality and safety.
Requests for alternatives shall be submitted in accordance with 10 CFR 72.4.
(continued)
Renewed Amendment No. 10
Design Features 3.0 Certificate of Compliance No. 1014 Appendix B 3-5 DESIGN FEATURES Table 3-1 (page 1 of 9)
LIST OF ASME CODE ALTERNATIVES FOR HI-STORM 100 CASK SYSTEM Component Reference ASME Code Section/Article Code Requirement Alternative, Justification & Compensatory Measures MPC, MPC basket
- assembly, HI-STORM OVERPACK steel structure, and HI-TRAC TRANSFER CASK steel structure Subsection NCA General Requirements.
Requires preparation of a Design Specification, Design Report, Overpressure Protection Report, Certification of Construction Report, Data Report, and other administrative controls for an ASME Code stamped vessel.
Because the
- MPC, OVERPACK, and TRANSFER CASK are not ASME Code stamped vessels, none of the specifications, reports, certificates, or other general requirements specified by NCA are required. In lieu of a Design Specification and Design Report, the HI-STORM FSAR includes the design criteria, service conditions, and load combinations for the design and operation of the HI-STORM 100 System as well as the results of the stress analyses to demonstrate that applicable Code stress limits are met. Additionally, the fabricator is not required to have an ASME-certified QA program.
All important-to-safety activities are governed by the NRC-approved Holtec QA program.
Because the cask components are not certified to the Code, the terms Certificate Holder and Inspector are not germane to the manufacturing of NRC-certified cask components. To eliminate ambiguity, the responsibilities assigned to the Certificate Holder in the various articles of Subsections NB, NG, and NF of the Code, as applicable, shall be interpreted to apply to the NRC Certificate of Compliance (CoC) holder (and by extension, to the component fabricator) if the requirement must be fulfilled. The Code term Inspector means the QA/QC personnel of the CoC holder and its vendors assigned to oversee and inspect the manufacturing process.
MPC NB-1100 Statement of requirements for Code stamping of components.
MPC enclosure vessel is designed and will be fabricated in accordance with ASME Code,Section III, Subsection NB to the maximum practical extent, but Code stamping is not required.
Renewed Amendment No. 10
Design Features 3.0 Certificate of Compliance No. 1014 Appendix B 3-6 Table 3-1 (page 2 of 9)
LIST OF ASME CODE ALTERNATIVES FOR HI-STORM 100 CASK SYSTEM Component Reference ASME Code Section/Article Code Requirement Alternative, Justification & Compensatory Measures MPC basket supports and lift lugs NB-1130 NB-1132.2(d) requires that the first connecting weld of a nonpressure-retaining structural attachment to a component shall be considered part of the component unless the weld is more than 2t from the pressure-retaining portion of the component, where t is the nominal thickness of the pressure-retaining material.
NB-1132.2(e) requires that the first connecting weld of a welded nonstructural attachment to a component shall conform to NB-4430 if the connecting weld is within 2t from the pressure-retaining portion of the component.
The MPC basket supports (nonpressure-retaining structural attachments)and lift lugs (nonstructural attachments (relative to the function of lifting a loaded MPC) that are used exclusively for lifting an empty MPC) are welded to the inside of the pressure-retaining MPC shell, but are not designed in accordance with Subsection NB. The basket supports and associated attachment welds are designed to satisfy the stress limits of Subsection NG and the lift lugs and associated attachment welds are designed to satisfy the stress limits of Subsection NF, as a minimum. These attachments and their welds are shown by analysis to meet the respective stress limits for their service conditions. Likewise, non-structural items, such as shield plugs, spacers, etc. if used, can be attached to pressure-retaining parts in the same manner.
MPC NB-2000 Requires materials to be supplied by ASME-approved material supplier.
Materials will be supplied by Holtec-approved suppliers with Certified Material Test Reports (CMTRs) in accordance with NB-2000 requirements.
Renewed Amendment No. 10
Design Features 3.0 Certificate of Compliance No. 1014 Appendix B 3-7 Table 3-1 (page 3 of 9)
LIST OF ASME CODE ALTERNATIVES FOR HI-STORM 100 CASK SYSTEM Component Reference ASME Code Section/Article Code Requirement Alternative, Justification & Compensatory Measures MPC, MPC basket
- assembly, HI-STORM OVERPACK and HI-TRAC TRANSFER CASK NB-3100 NG-3100 NF-3100 Provides requirements for determining design loading conditions, such as pressure, temperature, and mechanical loads.
These requirements are not applicable. The HI-STORM FSAR, serving as the Design Specification, establishes the service conditions and load combinations for the storage system.
MPC NB-3350 NB-3352.3 requires, for Category C joints, that the minimum dimensions of the welds and throat thickness shall be as shown in Figure NB-4243-1.
Due to MPC basket-to-shell interface requirements, the MPC shell-to-baseplate weld joint design (designated Category C) does not include a reinforcing fillet weld or a bevel in the MPC baseplate, which makes it different than any of the representative configurations depicted in Figure NB-4243-1. The transverse thickness of this weld is equal to the thickness of the adjoining shell (1/2 inch). The weld is designed as a full penetration weld that receives VT and RT or UT, as well as final surface PT examinations.
Because the MPC shell design thickness is considerably larger than the minimum thickness required by the Code, a reinforcing fillet weld that would intrude into the MPC cavity space is not included. Not including this fillet weld provides for a higher quality radiographic examination of the full penetration weld.
From the standpoint of stress analysis, the fillet weld serves to reduce the local bending stress (secondary stress) produced by the gross structural discontinuity defined by the flat plate/shell junction. In the MPC design, the shell and baseplate thicknesses are well beyond that required to meet their respective membrane stress intensity limits.
Renewed Amendment No. 10
Design Features 3.0 Certificate of Compliance No. 1014 Appendix B 3-8 Table 3-1 (page 4 of 9)
LIST OF ASME CODE ALTERNATIVES FOR HI-STORM 100 CASK SYSTEM Component Reference ASME Code Section/Article Code Requirement Alternative, Justification & Compensatory Measures MPC, MPC Basket
- Assembly, HI-STORM OVERPACK steel structure, and HI-TRAC TRANSFER CASK steel structure NB-4120 NG-4120 NF-4120 NB-4121.2, NG-4121.2, and NF-4121.2 provide requirements for repetition of tensile or impact tests for material subjected to heat treatment during fabrication or installation.
In-shop operations of short duration that apply heat to a component, such as plasma cutting of plate stock, welding, machining, coating, and pouring of lead are not, unless explicitly stated by the Code, defined as heat treatment operations.
For the steel parts in the HI-STORM 100 System components, the duration for which a part exceeds the off-normal temperature limit defined in Chapter 2 of the FSAR shall be limited to 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> in a particular manufacturing process (such as the HI-TRAC lead pouring process).
- assembly, HI-STORM OVERPACK steel structure, and HI-TRAC TRANSFER CASK steel structure NB-4220 NF-4220 Requires certain forming tolerances to be met for cylindrical, conical, or spherical shells of a vessel.
The cylindricity measurements on the rolled shells are not specifically recorded in the shop travelers, as would be the case for a Code-stamped pressure vessel. Rather, the requirements on inter-component clearances (such as the MPC-to-TRANSFER CASK) are guaranteed through fixture-controlled manufacturing. The fabrication specification and shop procedures ensure that all dimensional design objectives, including inter-component annular clearances are satisfied.
The dimensions required to be met in fabrication are chosen to meet the functional requirements of the dry storage components. Thus, although the post-forming Code cylindricity requirements are not evaluated for compliance directly, they are indirectly satisfied (actually exceeded) in the final manufactured components.
MPC Lid and Closure Ring Welds NB-4243 Full penetration welds required for Category C Joints (flat head to main shell per NB-3352.3).
MPC lid and closure ring are not full penetration welds. They are welded independently to provide a redundant seal. Additionally, a weld efficiency factor of 0.45 has been applied to the analyses of these welds.
Renewed Amendment No. 10
Design Features 3.0 Certificate of Compliance No. 1014 Appendix B 3-9 Table 3-1 (page 5 of 9)
LIST OF ASME CODE ALTERNATIVES FOR HI-STORM 100 CASK SYSTEM Component Reference ASME Code Section/Article Code Requirement Alternative, Justification & Compensatory Measures MPC Lid to Shell Weld NB-5230 Radiographic (RT) or ultrasonic (UT) examination required Only UT or multi-layer liquid penetrant (PT) examination is permitted. If PT alone is used, at a minimum, it will include the root and final weld layers and each approximately 3/8 inch of weld depth.
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.
Renewed Amendment No. 10
Design Features 3.0 Certificate of Compliance No. 1014 Appendix B 3-10 MPC Enclosure Vessel and Lid NB-6111 All completed pressure retaining systems shall be pressure tested.
The MPC enclosure vessel is seal welded in the field following fuel assembly loading. The MPC enclosure vessel shall then be pressure tested as defined in Chapter 9. Accessibility for leakage inspections precludes a Code compliant pressure test. Since the shell welds of the MPC cannot be checked for leakage during this pressure test, the shop leakage test to 10-7 ref-cc/sec provides reasonable assurance as to its leak tightness. All MPC enclosure vessel welds (except closure ring and vent/drain cover plate) are inspected by volumetric examination, except the MPC lid-to-shell weld shall be verified by volumetric or multi-layer PT examination. If PT alone is used, at a minimum, it must include the root and final layers and each approximately 3/8 inch of weld depth. For either UT or PT, the maximum undetectable flaw size must be demonstrated to be less than the critical flaw size. The critical flaw size must be determined in accordance with ASME Section XI methods.
The critical flaw size shall not cause the primary stress limits of NB-3000 to be exceeded.
The inspection results, including relevant findings (indications), shall be made a permanent part of the users records by video, photographic, or other means which provide an equivalent retrievable record of weld integrity.
The video or photographic records should be taken during the final interpretation period described in ASME Section V, Article 6, T-676.
The vent/drain cover plate and the closure ring welds are confirmed by liquid penetrant examination. The inspection of the weld must be performed by qualified personnel and shall meet the acceptance requirements of ASME Code Section III, NB-5350 for PT or NB-5332 for UT.
Renewed Amendment No. 10
Design Features 3.0 Certificate of Compliance No. 1014 Appendix B 3-11 Table 3-1 (page 6 of 9)
LIST OF ASME CODE ALTERNATIVES FOR HI-STORM 100 CASK SYSTEM Component Reference ASME Code Section/Article Code Requirement Alternative, Justification & Compensatory Measures MPC Enclosure Vessel NB-7000 Vessels are required to have overpressure protection No overpressure protection is provided. The function of the MPC enclosure vessel is to contain the radioactive contents under normal, off-normal, and accident conditions. The MPC vessel is designed to withstand maximum internal pressure considering 100% fuel rod failure and maximum accident temperatures.
MPC Enclosure Vessel NB-8000 States requirements for nameplates, stamping and reports per NCA-8000.
The HI-STORM100 System is to be marked and identified in accordance with 10CFR71 and 10CFR72 requirements. Code stamping is not required. QA data package to be in accordance with Holtec approved QA program.
MPC Basket Assembly NG-2000 Requires materials to be supplied by ASME-approved material supplier.
Materials will be supplied by Holtec-approved supplier with CMTRs in accordance with NG-2000 requirements.
Renewed Amendment No. 10
Design Features 3.0 Certificate of Compliance No. 1014 Appendix B 3-12 Table 3-1 (page 7 of 9)
LIST OF ASME CODE ALTERNATIVES FOR HI-STORM 100 CASK SYSTEM Component Reference ASME Code Section/Article Code Requirement Alternative, Justification & Compensatory Measures MPC basket assembly NG-4420 NG-4427(a) allows a fillet weld in any single continuous weld to be less than the specified fillet weld dimension by not more than 1/16 inch, provided that the total undersize portion of the weld does not exceed 10 percent of the length of the weld.
Individual undersize weld portions shall not exceed 2 inches in length.
Modify the Code requirement (intended for core support structures) with the following text prepared to accord with the geometry and stress analysis imperatives for the fuel basket: For the longitudinal MPC basket fillet welds, the following criteria apply: 1)
The specified fillet weld throat dimension must be maintained over at least 92 percent of the total weld length. All regions of undersized weld must be less than 3 inches long and separated from each other by at least 9 inches. 2) Areas of undercuts and porosity beyond that allowed by the applicable ASME Code shall not exceed 1/2 inch in weld length. The total length of undercut and porosity over any 1-foot length shall not exceed 2 inches. 3) The total weld length in which items (1) and (2) apply shall not exceed a total of 10 percent of the overall weld length. The limited access of the MPC basket panel longitudinal fillet welds makes it difficult to perform effective repairs of these welds and creates the potential for causing additional damage to the basket assembly (e.g., to the neutron absorber and its sheathing) if repairs are attempted. The acceptance criteria provided in the foregoing have been established to comport with the objectives of the basket design and preserve the margins demonstrated in the supporting stress analysis.
From the structural standpoint, the weld acceptance criteria are established to ensure that any departure from the ideal, continuous fillet weld seam would not alter the primary bending stresses on which the design of the fuel baskets is predicated. Stated differently, the permitted weld discontinuities are limited in size to ensure that they remain classifiable as local stress elevators (peak stress, F, in the ASME Code for which specific stress intensity limits do not apply).
MPC Basket Assembly NG-8000 States requirements for nameplates, stamping and reports per NCA-8000.
The HI-STORM100 System is to be marked and identified in accordance with 10CFR71 and 10CFR72 requirements. Code stamping is not required. The MPC basket data package to be in accordance with Holtec approved QA program.
OVERPACK Steel Structure NF-2000 Requires materials to be supplied by ASME-approved material supplier.
Materials will be supplied by Holtec-approved supplier with CMTRs in accordance with NF-2000 requirements.
Renewed Amendment No. 10
Design Features 3.0 Certificate of Compliance No. 1014 Appendix B 3-13 Table 3-1 (page 8 of 9)
LIST OF ASME CODE ALTERNATIVES FOR HI-STORM 100 CASK SYSTEM Component Reference ASME Code Section/Article Code Requirement Alternative, Justification & Compensatory Measures TRANSFER CASK Steel Structure NF-2000 Requires materials to be supplied by ASME-approved material supplier.
Materials will be supplied by Holtec-approved supplier with CMTRs in accordance with NF-2000 requirements.
OVERPACK Baseplate and Lid Top Plate NF-4441 Requires special examinations or requirements for welds where a primary member of thickness 1 inch or greater is loaded to transmit loads in the through thickness direction.
The margins of safety in these welds under loads experienced during lifting operations or accident conditions are quite large. The OVERPACK baseplate welds to the inner shell, pedestal shell, and radial plates are only loaded during lifting conditions and have large safety factors during lifting. Likewise, the top lid plate to lid shell weld has a large structural margin under the inertia loads imposed during a non-mechanistic tipover event.
OVERPACK Steel Structure NF-3256 NF-3266 Provides requirements for welded joints.
Welds for which no structural credit is taken are identified as Non-NF welds in the design drawings. These non-structural welds are specified in accordance with the pre-qualified welds of AWS D1.1. These welds shall be made by welders and weld procedures qualified in accordance with AWS D1.1 or ASME Section IX.
Welds for which structural credit is taken in the safety analyses shall meet the stress limits for NF-3256.2, but are not required to meet the joint configuration requirements specified in these Code articles. The geometry of the joint designs in the cask structures are based on the fabricability and accessibility of the joint, not generally contemplated by this Code section governing supports.
Renewed Amendment No. 10
Design Features 3.0 Certificate of Compliance No. 1014 Appendix B 3-14 Table 3-1 (page 9 of 9)
LIST OF ASME CODE ALTERNATIVES FOR HI-STORM 100 CASK SYSTEM Component Reference ASME Code Section/Article Code Requirement Alternative, Justification & Compensatory Measures HI-STORM OVERPACK and HI-TRAC TRANSFER CASK NF-3320 NF-4720 NF-3324.6 and NF-4720 provide requirements for bolting These Code requirements are applicable to linear structures wherein bolted joints carry axial, shear, as well as rotational (torsional) loads. The OVERPACK and TRANSFER CASK bolted connections in the structural load path are qualified by design based on the design loadings defined in the FSAR. Bolted joints in these components see no shear or torsional loads under normal storage conditions.
Larger clearances between bolts and holes may be necessary to ensure shear interfaces located elsewhere in the structure engage prior to the bolts experiencing shear loadings (which occur only during side impact scenarios).
Bolted joints that are subject to shear loads in accident conditions are qualified by appropriate stress analysis. Larger bolt-to-hole clearances help ensure more efficient operations in making these bolted connections, thereby minimizing time spent by operations personnel in a radiation area. Additionally, larger bolt-to-hole clearances allow interchangeability of the lids from one particular fabricated cask to another.
HI-STORM OVERPACK and HI-TRAC TRANSFER CASK Section II, SA-516/516A Table 1 -
Chemical requirements All SA-516 material used in the HI-STORM 100 system is required to meet the material composition described in ASME Code Section II, 2007 edition. This edition allows for a different manganese content from the 1995 edition, but does not change the structural or thermal properties of the material.
Renewed Amendment No. 10
Design Features 3.0 Certificate of Compliance No. 1014 Appendix B 3-15 DESIGN FEATURES (continued) 3.4 Site-Specific Parameters and Analyses Site-specific parameters and analyses that will require verification by the system user are, as a minimum, as follows:
1.
The temperature of 80o F is the maximum average yearly temperature.
2.
The allowed temperature extremes, averaged over a 3-day period, shall be greater than -40o F and less than 125o F.
3.
- a.
For storage in freestanding OVERPACKs, the resultant horizontal acceleration (vectorial sum of two horizontal Zero Period Accelerations (ZPAs) at a three-dimensional seismic site), GH, and vertical ZPA, GV, on the top surface of the ISFSI pad, expressed as fractions of g, shall satisfy the following inequality:
GH + GV where is either the Coulomb friction coefficient for the cask/ISFSI pad interface or the ratio r/h, where r is the radius of the cask and h is the height of the cask center-of-gravity above the ISFSI pad surface. The above inequality must be met for both definitions of,
but only applies to ISFSIs where the casks are deployed in a freestanding configuration. Unless demonstrated by appropriate testing that a higher coefficient of friction value is appropriate for a specific ISFSI, the value used shall be 0.53. If acceleration time-histories on the ISFSI pad surface are available, GH and GV may be the coincident values of the instantaneous net horizontal and vertical accelerations. If instantaneous accelerations are used, the inequality shall be evaluated at each time step in the acceleration time history over the total duration of the seismic event.
If this static equilibrium based inequality cannot be met, a dynamic analysis of the cask/ISFSI pad assemblage with appropriate recognition of soil/structure interaction effects shall be performed to ensure that the casks will not tip over or undergo excessive sliding under the sites Design Basis Earthquake.
(continued)
Renewed Amendment No. 10
Design Features 3.0 Certificate of Compliance No. 1014 Appendix B 3-16 DESIGN FEATURES (continued) 3.4 Site-Specific Parameters and Analyses (continued) b.
For free-standing casks, under environmental conditions that may degrade the pad/cask interface friction (such as due to icing) the response of the casks under the sites Design Basis Earthquake shall be established using the best estimate of the friction coefficient in an appropriate analysis model. The analysis should demonstrate that the earthquake will not result in cask tipover or cause a cask to fall off the pad. In addition, impact between casks should be precluded, or should be considered an accident for which the maximum g-load experienced by the stored fuel shall be limited to 45 gs.
c.
For those ISFSI sites with design basis seismic acceleration values that may overturn or cause excessive sliding of free-standing casks, the HI-STORM 100 System OVERPACKs shall be anchored to the ISFSI pad. The site seismic characteristics and the anchorage system shall meet the following requirements:
i.
The site acceleration response spectra at the top of the ISFSI pad shall have ZPAs that meet the following inequalities:
GH 2.12 AND GV 1.5 Where:
GH is the vectorial sum of the two horizontal ZPAs at a three-dimensional seismic site (or the horizontal ZPA at a two-dimensional site) and GV is the vertical ZPA.
ii.
Each HI-STORM 100 dry storage cask shall be anchored with twenty-eight (28), 2-inch diameter studs and compatible nuts of material suitable for the expected ISFSI environment. The studs shall meet the following requirements:
Yield Strength at Ambient Temperature: 80 ksi Ultimate Strength at Ambient Temperature: 125 ksi Initial Tensile Pre-Stress: 55 ksi AND 65 ksi (continued)
Renewed Amendment No. 10
Design Features 3.0 Certificate of Compliance No. 1014 Appendix B 3-17 DESIGN FEATURES (continued) 3.4 Site-Specific Parameters and Analyses (continued)
NOTE:
The above anchorage specifications are required for the seismic spectra defined in item 3.4.3.c.i. Users may use fewer studs or those of different diameter to account for site-specific seismic spectra less severe than those specified above. The embedment design shall comply with Appendix B of ACI-349-97. A later edition of this Code may be used, provided a written reconciliation is performed.
iii.
Embedment Concrete Compressive Strength: 4,000 psi at 28 days 4.
The analyzed flood condition of 15 fps water velocity and a height of 125 feet of water (full submergence of the loaded cask) are not exceeded.
5.
The potential for fire and explosion while handling a loaded OVERPACK or TRANSFER CASK shall be addressed, based on site-specific considerations. The user shall demonstrate that the site-specific potential for fire is bounded by the fire conditions analyzed by the Certificate Holder, or an analysis of the site-specific fire considerations shall be performed.
6.
- a.
For freestanding casks, the ISFSI pad shall be verified by analysis to limit cask deceleration during design basis drop and non-mechanistic tip-over events to 45 gs at the top of the MPC fuel basket. Analyses shall be performed using methodologies consistent with those described in the HI-STORM 100 FSAR. A restriction on the lift and/or drop height is not required if the cask is lifted with a device designed in accordance with ANSI N14.6 and has redundant drop protection features.
b.
For anchored casks, the ISFSI pad shall be designed to meet the embedment requirements of the anchorage design. A cask tip-over event for an anchored cask is not credible. The ISFSI pad shall be verified by analysis to limit cask deceleration during a design basis drop event to 45 gs at the top of the MPC fuel basket, except as provided for in this paragraph below. Analyses shall be performed using methodologies consistent with those described in the HI-STORM 100 FSAR. A restriction on the lift and/or drop height is not required to be established if the cask is lifted with a device designed in accordance with ANSI N14.6 and has redundant drop protection features.
(continued)
Renewed Amendment No. 10
Design Features 3.0 Certificate of Compliance No. 1014 Appendix B 3-18 DESIGN FEATURES (continued) 3.4 Site-Specific Parameters and Analyses (continued) 7.
In cases where engineered features (i.e., berms and shield walls) are used to ensure that the requirements of 10CFR72.104(a) are met, such features are to be considered important to safety and must be evaluated to determine the applicable quality assurance category.
8.
LOADING OPERATIONS, TRANSPORT OPERATIONS, and UNLOADING OPERATIONS shall only be conducted with working area ambient temperatures 0o F for all MPC heat loads, and a.
90oF (averaged over a 3-day period) for operations subjected to direct solar heating b.
110oF (averaged over a 3-day period) for operations not subjected to direct solar heating for all MPC heat loads.
9.
For those users whose site-specific design basis includes an event or events (e.g., flood) that result in the blockage of any OVERPACK inlet or outlet air ducts for an extended period of time (i.e, longer than the total Completion Time of LCO 3.1.2), an analysis or evaluation may be performed to demonstrate adequate heat removal is available for the duration of the event. Adequate heat removal is defined as fuel cladding temperatures remaining below the short term temperature limit. If the analysis or evaluation is not performed, or if fuel cladding temperature limits are unable to be demonstrated by analysis or evaluation to remain below the short term temperature limit for the duration of the event, provisions shall be established to provide alternate means of cooling to accomplish this objective.
10.
Users shall establish procedural and/or mechanical barriers to ensure that during LOADING OPERATIONS and UNLOADING OPERATIONS, either the fuel cladding is covered by water, or the MPC is filled with an inert gas.
11.
Site ambient temperature under HI-TRAC TRANSPORT OPERATIONS shall be evaluated in accordance with Section 3.9 requirements.
(continued)
Renewed Amendment No. 10
Design Features 3.0 Certificate of Compliance No. 1014 Appendix B 3-19 DESIGN FEATURES (continued) 3.5 Cask Transfer Facility (CTF) 3.5.1 TRANSFER CASK and MPC Lifters Lifting of a loaded TRANSFER CASK and MPC using devices that are not integral to structures governed by 10 CFR Part 50 shall be performed with a CTF that is designed, operated, fabricated, tested, inspected, and maintained in accordance with the guidelines of NUREG-0612, Control of Heavy Loads at Nuclear Power Plants, as applicable, and the below clarifications. The CTF Structure requirements below do not apply to heavy loads bounded by the regulations of 10 CFR Part 50 or to the loading of an OVERPACK in a belowground restraint system which permits MPC TRANSFER near grade level and does not require an aboveground CTF.
3.5.2 CTF Structure Requirements 3.5.2.1 Cask Transfer Station and Stationary Lifting Devices 1.
The metal weldment structure of the CTF structure shall be designed to comply with the stress limits of ASME Section III, Subsection NF, Class 3 for linear structures. The applicable loads, load combinations, and associated service condition definitions are provided in Table 3-2. All compression loaded members shall satisfy the buckling criteria of ASME Section III, Subsection NF.
2.
If a portion of the CTF structure is constructed of reinforced concrete, then the factored load combinations set forth in ACI-318 (89) for the loads defined in Table 3-2 shall apply.
3.
The TRANSFER CASK and MPC lifting device used with the CTF shall be designed, fabricated, operated, tested, inspected and maintained in accordance with NUREG-0612, Section 5.1.
4.
The CTF shall be designed, constructed, and evaluated to ensure that if the MPC is dropped during inter-cask transfer operations, its confinement boundary would not be breached. This requirement applies to CTFs with either stationary or mobile lifting devices.
(continued)
Renewed Amendment No. 10
Design Features 3.0 Certificate of Compliance No. 1014 Appendix B 3-20 DESIGN FEATURES (continued) 3.5 Cask Transfer Facility (CTF) (continued) 3.5.2.2 Mobile Lift Devices If a mobile lifting device is used as the lifting device, in lieu of a stationary lifting device, it shall meet the guidelines of NUREG-0612, Section 5.1, with the following clarifications:
1.
Mobile lifting devices shall have a minimum safety factor of two over the allowable load table for the lifting device in accordance with the guidance of NUREG-0612, Section 5.1.6(1)(a) and shall be capable of stopping and holding the load during a Design Basis Earthquake (DBE) event.
2.
Mobile lifting devices shall conform to meet the requirements of ANSI B30.5, Mobile and Locomotive Cranes, in lieu of the requirements of ANSI B30.2, Overhead and Gantry Cranes.
3.
Mobile cranes are not required to meet the requirements of NUREG-0612, Section 5.1.6(2) for new cranes.
4.
Horizontal movements of the TRANSFER CASK and MPC using a mobile crane are prohibited.
(continued)
Renewed Amendment No. 10
Design Features 3.0 Certificate of Compliance No. 1014 Appendix B 3-21 DESIGN FEATURES (continued) 3.5 Cask Transfer Facility (CTF)(continued)
Table 3-2 Load Combinations and Service Condition Definitions for the CTF Structure (Note 1)
Load Combination ASME III Service Condition for Definition of Allowable Stress Comment D*
D + S Level A All primary load bearing members must satisfy Level A stress limits D + M + W (Note 2)
D + F D + E D + Y Level D Factor of safety against overturning shall be 1.1 D = Dead load D* = Apparent dead load S = Snow and ice load for the CTF site M = Tornado missile load for the CTF site W = Tornado wind load for the CTF site F = Flood load for the CTF site E = Seismic load for the CTF site Y = Tsunami load for the CTF site Notes:
- 1.
The reinforced concrete portion of the CTF structure shall also meet the factored combinations of loads set forth in ACI-318(89).
2.
Tornado missile load may be reduced or eliminated based on a PRA for the CTF site.
Renewed Amendment No. 10
Design Features 3.0 Certificate of Compliance No. 1014 Appendix B 3-22 DESIGN FEATURES (continued) 3.6 Forced Helium Dehydration System 3.6.1
System Description
Use of a forced helium dehydration (FHD) system, (a closed-loop system) is an alternative to vacuum drying the MPC for moderate burnup fuel (
45,000 MWD/MTU) with lower MPC heat load and mandatory for drying MPCs containing one or more high burnup fuel assemblies or higher MPC heat loads as indicated in Appendix A Table 3-1. The FHD system shall be designed for normal operation (i.e., excluding startup and shutdown ramps) in accordance with the criteria in Section 3.6.2.
3.6.2 Design Criteria 3.6.2.1 The temperature of the helium gas in the MPC shall be at least 15oF higher than the saturation temperature at coincident pressure.
3.6.2.2 The pressure in the MPC cavity space shall be 60.3 psig (75 psia) during drying. Backfill pressures shall be as described in Appendix A.
3.6.2.3 The hourly recirculation rate of helium shall be 10 times the nominal helium mass backfilled into the MPC for fuel storage operations.
3.6.2.4 The partial pressure of the water vapor in the MPC cavity will not exceed 3 torr. The limit is met if the gas temperature at the demoisturizer outlet is verified by measurement to remain 21oF for a period of 30 minutes or if the dew point of the gas exiting the MPC is verified by measurement to remain 22.9oF for 30 minutes.
3.6.2.5 The condensing module shall be designed to de-vaporize the recirculating helium gas to a dew point 120oF.
3.6.2.6 The demoisturizing module shall be configured to be introduced into its helium conditioning function after the condensing module has been operated for the required length of time to assure that the bulk moisture vaporization in the MPC (defined as Phase 1 in FSAR Appendix 2.B) has been completed.
3.6.2.7 The helium circulator shall be sized to effect the minimum flow rate of circulation required by these design criteria.
3.6.2.8 The pre-heater module shall be engineered to ensure that the temperature of the helium gas in the MPC meets these design criteria.
Renewed Amendment No. 10
Design Features 3.0 Certificate of Compliance No. 1014 Appendix B 3-23 DESIGN FEATURES (continued) 3.6 Forced Helium Dehydration System (continued) 3.6.3 Fuel Cladding Temperature A steady-state thermal analysis of the MPC under the forced helium flow scenario shall be performed using the methodology described in HI-STORM 100 FSAR Section 4.4, with due recognition of the forced convection process during FHD system operation. This analysis shall demonstrate that the peak temperature of the fuel cladding, under the most adverse condition of FHD system operation, is below the peak cladding temperature limit for normal conditions of storage for the applicable fuel type (PWR or BWR) and cooling time at the start of dry storage.
3.6.4 Pressure Monitoring During FHD Malfunction During an FHD malfunction event, described in HI-STORM 100 FSAR Chapter 11 as a loss of helium circulation, the system pressure must be monitored to ensure that the conditions listed therein are met.
Renewed Amendment No. 10
Design Features 3.0 Certificate of Compliance No. 1014 Appendix B 3-24 DESIGN FEATURES (continued) 3.7 Supplemental Cooling System 3.7.1
System Description
A supplemental cooling system (SCS) is an external system for cooling the MPC inside the HI-TRAC transfer cask during on-site transport. The SCS is required for transport of high burnup fuel under certain heat load conditions defined in Table 3-3. The SCS shall be designed for normal operation (i.e., excluding startup and shutdown ramps) in accordance with the criteria in Section 3.7.2.
3.7.2 Design Criteria 3.7.2.1 Not Used.
3.7.2.2 If water is used as the coolant, the system shall be sized to limit the coolant temperature to below 180ºF under steady-state conditions for the design basis heat load at an ambient air temperature of 110ºF. Any electric motors shall have a backup power supply for uninterrupted operation.
3.7.2.3 The system shall utilize a contamination-free fluid medium in contact with the external surfaces of the MPC and inside surfaces of the HI -TRAC transfer cask to minimize corrosion.
3.7.2.4 All passive components such as tubular heat exchangers, manually operated valves and fittings shall be designed to applicable standards (TEMA, ANSI).
3.7.2.5 The heat dissipation capacity of the SCS shall be equal to or greater than the minimum necessary to ensure that the peak cladding temperature is below 400ºC (752ºF). All heat transfer surfaces in heat exchangers shall be assumed to be fouled to the maximum limits specified in a widely used heat exchange equipment standard such as the Standards of Tubular Exchanger Manufacturers Association.
3.7.2.6 The coolant utilized to extract heat from the MPC shall be high purity water or air. Antifreeze may be used to prevent water from freezing if warranted by operating conditions. (continued)
Renewed Amendment No. 10
Design Features 3.0 Certificate of Compliance No. 1014 Appendix B 3-25 DESIGN FEATURES (continued) 3.7 Supplemental Cooling System (continued) 3.7.2.7 All pressure boundaries (as defined in the ASME Boiler and Pressure Vessel Code,Section VIII Division 1) shall have pressure ratings that are greater than the maximum system operating pressure by at least 15 psi.
3.7.2.8 All ASME Code components shall comply with Section VIII Division 1 of the ASME Boiler and Pressure Vessel Code.
3.7.2.9 All gasketed and packed joints shall have a minimum design pressure rating of the pump shut-off pressure plus 15 psi.
Renewed Amendment No. 10
Design Features 3.0 Certificate of Compliance No. 1014 Appendix B 3-26 Table 3-3 Requirements for Supplemental Cooling System Criteria for use of SCS Requirement MPC-68M Not required MPC containing one or more high Burnup fuel assemblies (> 45,000 MWD/MTU) and Heat loads more than 90% of maximum permissible heat loads defined in Section 2.4 under higher helium backfill limits in Table 3-2 of Appendix A Yes MPC containing one or more high Burnup fuel assemblies (> 45,000 MWD/MTU) and Heat loads more than 90% of heat load limits in Tables 3-3 or 3-4 of Appendix A under lower helium backfill limits in Table 3-2 of Appendix A Yes Renewed Amendment No. 10
Design Features 3.0 Certificate of Compliance No. 1014 Appendix B 3-27 DESIGN FEATURES (continued) 3.8 Combustible Gas Monitoring During MPC Lid Welding and Cutting During MPC lid-to-shell welding and cutting operations, combustible gas monitoring of the space under the MPC lid is required, to ensure that there is no combustible mixture present.
3.9 Environmental Temperature Requirements Short term operations involving the HI-TRAC transfer cask can be carried out if the reference ambient temperature (three day average around the cask) is below the Threshold Temperature of 110 deg. F ambient temperature, applicable during HI-TRAC transfer operations inside the 10 CFR Part 50 or 10 CFR Part 52 structural boundary and 90 deg. F outside of it. The determination of the Threshold Temperature compliance shall be made based on the best available thermal data for the site.
If the reference ambient temperature exceeds the corresponding Threshold Temperature then a site specific analysis shall be performed using the actual heat load and reference ambient temperature equal to the three day average to ensure that the steady state peak fuel cladding temperature will remain below the 400°C limit. If the peak fuel cladding temperature exceeds 400°C limit then the operation of a Supplemental Cooling System (SCS) in accordance with LCO 3.1.4 is mandatory.
SCS operation is mandatory if site data is not available or if a user elects to deploy Supplemental Cooling in lieu of site ambient temperature evaluation.
Renewed Amendment No. 10