ML19289A609
| ML19289A609 | |
| Person / Time | |
|---|---|
| Site: | 07201032 |
| Issue date: | 10/04/2019 |
| From: | Holtec |
| To: | Office of Nuclear Material Safety and Safeguards |
| References | |
| 5018072 | |
| Download: ML19289A609 (7) | |
Text
TABLE OF CONTENTS 1.0 DEFINITIONS........................................................................................................ 1-1 2.0 APPROVED CONTENTS...................................................................................... 2-1 2.1 Fuel Specifications and Loading Conditions...................................................... 2-1 2.2 Violations........................................................................................................... 2-1 2.3 Decay Heat Limits........................................................................................... 2-21 2.4 Burnup Credit.................................................................................................. 2-40 2.5 Burnup and Cooling Time Fuel Qualification Requirements........................... 2-44 Figure 2.1-1 MPC-37 Region-Cell Identification...................................................... 2-2 Figure 2.1-2 MPC-89 Region-Cell Identification...................................................... 2-3 Figure 2.1-3 MPC-32ML Cell Identification............................................................. 2-4 Table 2.1-1 Fuel Assembly Limits.......................................................................... 2-5 Table 2.1-2 PWR Fuel Assembly Characteristics................................................ 2-11 Table 2.1-3 BWR Fuel Assembly Characteristics................................................ 2-16 Table 2.3-1A MPC-37 Heat Load Data................................................................... 2-22 Table 2.3-1B MPC-37 Heat Load Data................................................................... 2-22 Table 2.3-1C MPC-37 Heat Load Data................................................................... 2-22 Table 2.3-2A MPC-89 Heat Load Data................................................................... 2-23 Table 2.3-2B MPC-89 Heat Load Data................................................................... 2-23 Table 2.3-3 MPC-37 Heat Load Data................................................................... 2-23 Table 2.3-4 MPC-89 Heat Load Data................................................................... 2-24 Table 2.3-5 MPC-32ML Heat Load Data.............................................................. 2-24 Table 2.3-6 PWR Fuel Length Categories. 2-24 Figure 2.3-1 Loading Pattern 37C1 for MPC-37 Containing Undamaged and Damaged Fuel in DFCs/DFIs, and/or Fuel Debris in DFC, Short Fuel per Cell Heat Load Limits.................................................................. 2-26 Figure 2.3-2 Loading Pattern 37C2 for MPC-37 Containing Undamaged and Damaged Fuel in DFCs/DFIs, Short Fuel per Cell Heat Load Limits
.......................................................................................................... 2-27 Figure 2.3-3 Loading Pattern 37C3 for MPC-37 Containing Undamaged and Damaged Fuel in DFCs/DFIs, and/or Fuel Debris in DFC, Short Fuel per Cell Heat Load Limits.................................................................. 2-28 Figure 2.3-4 Loading Pattern 37D1 for MPC-37 Containing Undamaged and Damaged Fuel in DFCs/DFIs, and/or Fuel Debris in DFC, Standard Fuel per Cell Heat Load.................................................................... 2-29 Figure 2.3-5 Loading Pattern 37D2 for MPC-37 Containing Undamaged and Damaged Fuel in DFCs/DFIs, Standard Fuel per Cell Heat Load Limits....................................................................................... 2-30 5018072 Attachment 4
Figure 2.3-6 Loading Pattern 37D3 for MPC-37 Containing Undamaged and Damaged Fuel in DFCs/DFIs, and/or Fuel Debris in DFC, Standard Fuel per Cell Heat Load Limits.......................................................... 2-31 Figure 2.3-7 Loading Pattern 37E1 for MPC-37 Loading Pattern for MPCs Containing Undamaged and Damaged Fuel in DFCs/DFIs, and/or Fuel Debris in DFC, Long Fuel per Cell Heat Load Limits..................... 2-32 Figure 2.3-8 Loading Pattern 37E2 for MPC-37 Containing Undamaged and Damaged Fuel in DFCs/DFIs, Long Fuel per Cell Heat Load Limits....................................................................................... 2-33 Figure 2.3-9 Loading Pattern 37E3 for MPC-37 Containing Undamaged and Damaged Fuel in DFCs/DFIs, and/or Fuel Debris in DFC, Long Fuel per Cell Heat Load Limits.................................................................. 2-34 Figure 2.3-10 Loading Pattern 89A1 for MPC-89 Containing Undamaged and Damaged Fuel in DFCs/DFIs, and/or Fuel Debris in DFC, per Cell Heat Load Limits....................................................................................... 2-35 Figure 2.3-11 Loading Pattern 89A2 for MPC-89 Containing Undamaged and Damaged Fuel in DFCs/DFIs, and/or Fuel Debris in DFC, per Cell Heat Load Limits..................................................................................2-36 Figure 2.3-12 Loading Pattern 89B1 for MPC-89 Containing Undamaged and Damaged Fuel in DFCs/DFIs, and/or Fuel Debris in DFC, per cell Heat Load Limits..2-37 Figure 2.3-13 Loading Pattern 89B2 for MPC-89 Containing Undamaged and Damaged Fuel in DFCs/DFIs, and/or Fuel Debris in DFC, per Cell Heat Load Limits..2-38 Table 2.4-1 Polynomial Functions for Minimum Burnup as a Function of Initial Enrichment.. 2-41 Table 2.4-2 Burnup Credit Configurations. 2-42 Table 2.4-3 In-Core Operating Requirements..2-43 Table 2.5-1 Burnup and Cooling Time Fuel Qualification Requirements for MPC-32ML........................................................................................ 2-44 Table 2.5-2 Burnup and Cooling Time Fuel Qualification Requirements for MPC-37 And MPC-89..................................................................................... 2-45 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........................................................... 3-11 3.5 Combustible Gas Monitoring During MPC Lid Welding and Cutting................ 3-14 Table 3-1 List of ASME Code Alternatives for Multi-Purpose Canisters (MPCs)..... 3-4 Table 3-2 REFERENCE ASME CODE PARAGRAPHS FOR HI-STORM FW OVERPACK and HI-TRAC VW TRANSFER CASK, PRIMARY LOAD 5018072 Attachment 4
Table 2.1-1 (page 1 of 6)
Fuel Assembly Limits I. MPC MODEL: MPC-37 A. Allowable Contents
- 1. Uranium oxide PWR UNDAMAGED FUEL ASSEMBLIES, DAMAGED FUEL ASSEMBLIES, and/or FUEL DEBRIS meeting the criteria in Table 2.1-2, with or without NON-FUEL HARDWARE and meeting the following specifications (Note 1):
- a. Cladding Type:
ZR
- b. Maximum Initial Enrichment:
5.0 wt. % U-235 with soluble boron credit per LCO 3.3.1 OR burnup credit per Section 2.4
- c. Post-irradiation Cooling Time and Average Burnup Per Assembly:
Cooling Time 1 years and meeting the equation in Section 2.5 Assembly Average Burnup 68.2 GWD/MTU
- d. Decay Heat Per Fuel Storage Location:
As specified in Section 2.3
- e. Fuel Assembly Length:
199.2 inches (nominal design including NON-FUEL HARDWARE and DFC)
- f. Fuel Assembly Width:
8.54 inches (nominal design)
- g. Fuel Assembly Weight:
2050 lbs (including NON-FUEL HARDWARE and DFC) 5018072 Attachment 4
Table 2.1-1 (page 3 of 6)
Fuel Assembly Limits II. MPC MODEL: MPC-89 A. Allowable Contents
- 1. Uranium oxide BWR UNDAMAGED FUEL ASSEMBLIES, DAMAGED FUEL ASSEMBLIES, and/or FUEL DEBRIS meeting the criteria in Table 2.1-3, with or without channels and meeting the following specifications:
- a. Cladding Type:
ZR
- b. Maximum PLANAR-AVERAGE INITIAL ENRICHMENT(Note 1):
As specified in Table 2.1-3 for the applicable fuel assembly array/class.
- c. Initial Maximum Rod Enrichment 5.0 wt. % U-235
- d. Post-irradiation Cooling Time and Average Burnup Per Assembly
- i. Array/Class 8x8F Cooling time 10 years and an assembly average burnup 27.5 GWD/MTU.
ii. All Other Array Classes Cooling Time 1.2 years and meeting the equation in Section 2.5 and an assembly average burnup 65 GWD/MTU
- e. Decay Heat Per Assembly
- i. Array/Class 8x8F 183.5 Watts ii. All Other Array Classes As specified in Section 2.3
- f. Fuel Assembly Length 176.5 inches (nominal design)
- g. Fuel Assembly Width 5.95 inches (nominal design)
- h. Fuel Assembly Weight 850 lbs, including a DFC as well as a channel 5018072 Attachment 4
Table 2.1-1 (page 5 of 6)
Fuel Assembly Limits III. MPC MODEL: MPC-32ML A. Allowable Contents
- 1. Uranium oxide PWR UNDAMAGED FUEL ASSEMBLIES, DAMAGED FUEL ASSEMBLIES, and/or FUEL DEBRIS meeting the criteria for array/class 16x16D in Table 2.1-2, with or without NON-FUEL HARDWARE and meeting the following specifications (Note 1):
- a. Cladding Type:
ZR
- b. Maximum Initial Enrichment:
5.0 wt. % U-235 with soluble boron credit per LCO 3.3.1
- c. Post-irradiation Cooling Time and Average Burnup Per Assembly:
Cooling Time 3 years and meeting the equation in Section 2.5 Assembly Average Burnup 68.2 GWD/MTU
- d. Decay Heat Per Fuel Storage Location:
As specified in Section 2.3
- e. Fuel Assembly Length:
196.122 inches (nominal design including NON-FUEL HARDWARE and DFC)
- f. Fuel Assembly Width:
9.04 inches (nominal design)
- g. Fuel Assembly Weight:
2200 lbs (including NON-FUEL HARDWARE and DFC). Average fuel weight not to exceed 2140 lbs.
5018072 Attachment 4
2.5 Burnup and Cooling Time Fuel Qualification Requirements Burnup and cooling time limits for fuel assemblies authorized for loading into MPC-32ML are provided in Table 2.5-1. Burnup and cooling time limits for fuel assemblies authorized for loading according to the alternative loading patterns shown in Figures 2.3-1 through 2.3-9 (MPC-37) and Figures 2.3-10 through 2.3-13 (MPC-89) are provided in Table 2.5-2.
The burnup and cooling time for every fuel loaded into the MPC-32ML, MPC-37 and MPC-89 must satisfy the following equation:
Ct = A
- Bu3 + B
- Bu2 + C
- Bu + D
- where, Ct
= Minimum cooling time (years)
Bu
= Assembly-average burnup (MWd/mtU)
A, B, C, D
= Polynomial coefficients listed in the Tables 2.5-1 and 2.5-2 Minimum cooling time must also meet limits specified in Table 2.1-1. If the calculated Ct is less than the cooling time limit in Table 2.1-1, the minimum cooling time in Table 2.1-1 is used.
TABLE 2.5-1 BURNUP AND COOLING TIME FUEL QUALIFICATION REQUIREMENTS FOR MPC-32ML A
B C
D 6.7667E-14
-3.6726E-09 8.1319E-05 2.7951E+00 5018072 Attachment 4
TABLE 2.5-2 BURNUP AND COOLING TIME FUEL QUALIFICATION REQUIREMENTS FOR MPC-37 AND MPC-89 Cell Decay Heat Load Limit (kW)
Polynomial Coefficients A
B C
D MPC-37 0.85 1.68353E-13
-9.65193E-09 2.69692E-04 2.95915E-01 0.85 < decay heat 3.5 1.19409E-14
-1.53990E-09 9.56825E-05
-3.98326E-01 MPC-89 0.32 1.65723E-13
-9.28339E-09 2.57533E-04 3.25897E-01 0.32 < decay heat 0.5 3.97779E-14
-2.80193E-09 1.36784E-04 3.04895E-01 0.5 < decay heat 0.75 1.44353E-14
-1.21525E-09 8.14851E-05 3.31914E-01 0.75 < decay heat 1.1
-7.45921E-15 1.09091E-09
-1.14219E-05 9.76224E-01 1.1 < decay heat 1.45 3.10800E-15
-7.92541E-11 1.56566E-05 6.47040E-01 1.45 < decay heat 1.6
-8.08081E-15 1.23810E-09
-3.48196E-05 1.11818E+00 5018072 Attachment 4