ML23100A073

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NAC-STC NAC Storage Transport Cask Safety Analysis Report STC-HBU RAI Response (Non-Proprietary Version) Volumes 1 and 2 Changed
ML23100A073
Person / Time
Site: 07109235
Issue date: 04/10/2023
From:
NAC International
To:
Office of Nuclear Material Safety and Safeguards, Document Control Desk
Shared Package
ML23100A071 List:
References
EPID L-2022-LLA-0070, ED20230032
Download: ML23100A073 (1)
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Text

March 2023 Revision 23A NACSTC NAC Storage Transport Cask SAFETY ANALYSIS REPORT STCHBU RAI Responses Non-Proprietary Version Volumes 1 and 2 Changed Pages Docket No. 719235 Atlanta Corporate Headquarters: 3950 East Jones Bridge Road, Norcross, Georgia 30092 USA Phone 7704471144, Fax 7704471797, www.nacintl.com to ED20230032 Page 1 of 1 Enclosure 1 RAI Responses for NAC-STC SAR, Revision 23A (Docket No. 71-9235)

NAC International March 2023

NAC-STC Docket No: 71-9235 CoC No: 9235 NAC INTERNATIONAL NON-PROPRIETARY RESPONSES TO THE UNITED STATES NUCLEAR REGULATORY COMMISSION REQUEST FOR ADDITIONAL INFORMATION November 2022 FOR REVIEW OF THE CERTIFICATE OF COMPLIANCE NO. 9235, STC TRANSPORATION PACKAGE (CoC NO. 9235 DOCKET NO. 71-9235)

March 2023 Page 1 of 14

NAC-STC Docket No: 71-9235 CoC No: 9235 TABLE OF CONTENTS Page STRUCTURAL EVALUATION ................................................................................................................. 3 MATERIALS EVALUATION ................................................................................................................... 14 Page 2 of 14

NAC-STC Docket No: 71-9235 CoC No: 9235 NAC INTERNATIONAL RESPONSE TO REQUEST FOR ADDITIONAL INFORMATION STRUCTURAL EVALUATION 2.1 Provide responses to the following questions related to Safety Analysis Report (SAR)

Section 2.13.6.15.2, Fuel Rod Assessment for HBU Fuel for 30-foot Side Drop, Revision 22A:

a. Describe how the maximum stress on SAR page 2.13.6-55, Revision 22A was calculated,
b. Justify the dynamic load factor (DLF) of [1.0] used in the stress calculation, explain the effects of the DLF on the HBU fuel rods, and provide the technical justifications for not using the DLF of 2.0 recommended in NUREG-2224,
c. Provide a benchmark study between a response spectra analysis and a physical model test that demonstrates the use of a response spectra analysis is a valid method to represent HBU fuel rod behavior in a cask under 30-foot side drop conditions, and
d. Justify the factor of [1.25] used in calculating the HBU rod moment of inertia when a response spectra analysis is used.

In Revision 22A of the SAR, the applicant recalculated the maximum fuel rod stresses following the guidance in NUREG-2224 Section 2.3.3 (Reference 2.2) and using a response spectra analysis with the ANSYS finite element computer program. The maximum stress calculated in this manner increased by approximately twenty-one percent versus the maximum fuel rod stress calculated in SAR Section 2.13.6.15.2, Fuel Rod Assessment for HBU Fuel for 30-foot Side Drop, Revision 20 (Reference 2.1). The staff did not find a detailed discussion in Revision 20 of the SAR of how the maximum stress value was calculated, and Revision 22A of the SAR does not contain a detailed discussion that explains the increased maximum stress values versus Revision 20 of the SAR. Therefore, the staff needs more information to understand how the maximum stress was calculated in Revision 22A.

A HBU fuel assembly system has characteristics that are dependant on the physical characteristics of the fuel assembly, the fuel rod, the cask, and the impact limiters (e.g.,

natural frequency, load duration and load time history shape). The staff is uncertain if a response spectra analysis is appropriate in evaluating a HBU fuel assembly system.

Therefore, the staff requests the applicant provide a benchmark study between a response spectra analysis and a physical model test, or similar information, that demonstrates the use of a response spectra analysis is a valid method to represent HBU fuel rod behavior in a cask under 30-foot side drop conditions.

Page 3 of 14

NAC PROPRIETARY INFORMATION REMOVED NAC-STC Docket No: 71-9235 CoC No: 9235 RAI 2.1 Continued In addition, the guidance in Section 2.3.5.2 of NUREG-2224 (Reference 2.2) suggests the use of a DLF of 2.0 to account for uncertainties involved in natural frequency, load duration, and load time history shape which depend on the physical characteristics of the fuel assembly, the rod, the cask and the impact limiters. However, the applicant used a DLF of [1.0] in the stress calculation, which implies that there are [no dynamic effects]

on a HBU fuel system in a cask during a drop. Therefore, the staff requests the applicant justify not using the DLF of 2.0 recommended in NUREG-2224.

This information is needed to verify compliance with Title 10 of the Code of Federal Regulations (10 CFR) Part 71.73(c)(1).

NAC International Response to Acceptance and Maintenance Tests Evaluation RAI 2.1:

Page 4 of 14

NAC PROPRIETARY INFORMATION REMOVED NAC-STC Docket No: 71-9235 CoC No: 9235 Page 5 of 14

NAC PROPRIETARY INFORMATION REMOVED NAC-STC Docket No: 71-9235 CoC No: 9235 Page 6 of 14

NAC PROPRIETARY INFORMATION REMOVED NAC-STC Docket No: 71-9235 CoC No: 9235 Page 7 of 14

NAC-STC Docket No: 71-9235 CoC No: 9235 NAC INTERNATIONAL RESPONSE TO REQUEST FOR ADDITIONAL INFORMATION STRUCTURAL EVALUATION 2.2 Explain the small maximum strain of 0.002% for Case No. 6 shown in the SAR table on page 2.13.6-59, Revision 22A. In SAR Section 2.13.6.15.4, Fatigue Evaluation for HBU Fuel for Normal Conditions of Transport, Revision 22A, the applicant provided the maximum fuel cladding stresses and strains during normal conditions of transport shown below. Those values are from the response spectrum analyses performed on the Westinghouse 17x17 fuel rods using the data from seven test cases as documented in the Data Analysis of ENSA/DOE Rail Cask Tests (Reference 2.3). The staff wants to understand why the calculated strain value of 0.002% is extremely small for Case No. 6 compared with other cases.

Case No. Max Stress (ksi) Max Strain (%)

1 0.95 0.009 2 1.74 0.016 3 2.10 0.019 4 2.05 0.019 5 3.41 0.031 6 2.15 0.002 7 2.83 0.026 This information is needed to determine compliance with 10 CFR 71.71(c)(5).

Page 8 of 14

NAC PROPRIETARY INFORMATION REMOVED NAC-STC Docket No: 71-9235 CoC No: 9235 NAC International Response to Acceptance and Maintenance Tests Evaluation RAI 2.2:

Page 9 of 14

NAC PROPRIETARY INFORMATION REMOVED NAC-STC Docket No: 71-9235 CoC No: 9235 NAC INTERNATIONAL RESPONSE TO REQUEST FOR ADDITIONAL INFORMATION STRUCTURAL EVALUATION 2.3 Provide responses to the following questions related to SAR Section 2.13.6.15.2, Fuel Rod Assessment for HBU Fuel for 30-foot Side Drop, Revision 22A:

a. Justify the use of different spacer grid locations in the end drop model as compared to the side drop and fatigue models,
b. Explain the different factor used in the moment of inertia calculation for the side drop and fatigue models versus the end drop model, and
c. Explain the use of different cladding stress allowables in the end drop and side drop analyses.

The SAR, Revision 22A, evaluates the Westinghouse 17x17 as the bounding HBU fuel rod geometry for the side drop, end drop, and normal conditions of transport fatigue models, but some parameters are different between the models. Provide an explanation for the different spacer grid geometry used and the different material assumptions made to allow the staff to evaluate the analysis.

This information is needed to determine compliance with 10 CFR 71.71(c)(5) and 10 CFR 71.73(c)(1).

NAC International Response to Acceptance and Maintenance Tests Evaluation RAI 2.3:

Page 10 of 14

NAC PROPRIETARY INFORMATION REMOVED NAC-STC Docket No: 71-9235 CoC No: 9235 Page 11 of 14

NAC PROPRIETARY INFORMATION REMOVED NAC-STC Docket No: 71-9235 CoC No: 9235 NAC INTERNATIONAL RESPONSE TO REQUEST FOR ADDITIONAL INFORMATION STRUCTURAL EVALUATION 2.4 Explain the loading inputs evaluated in SAR Section 2.13.6.15.4, Fatigue Evaluation for HBU Fuel for Normal Conditions of Transport, Revision 22A. Seven shock response spectra from recent rail cask testing (Reference 2.3) were selected as input loading cases for the HBU fuel rod model. However, there is no discussion in Revision 22A of the SAR why these cases were selected from the 10 test cases documented in the reference. The staff also noted that the three cases not selected exhibited the highest maximum accelerations on the instrumented fuel assemblies (Figures 5-183 and 5-184, Reference 2.3). In addition, there is no discussion in Revision 22A of the SAR on how data from the package used in this test campaign is applicable to the NAC-STC package.

This information is needed to determine compliance with 10 CFR 71.71(c)(5).

NAC International Response to Acceptance and Maintenance Tests Evaluation RAI 2.4:

Page 12 of 14

NAC PROPRIETARY INFORMATION REMOVED NAC-STC Docket No: 71-9235 CoC No: 9235 Page 13 of 14

NAC PROPRIETARY INFORMATION REMOVED NAC-STC Docket No: 71-9235 CoC No: 9235 NAC INTERNATIONAL RESPONSE TO REQUEST FOR ADDITIONAL INFORMATION MATERIALS EVALUATION 6.1 Justify the flexural rigidity factor applied to the bending response of the M5 fuel cladding. The structural analysis of the fuel cladding credits the flexural rigidity supplied by the fuel pellet, as described in NUREG 2224. The staff notes that the rigidity factor used in the calculation was not derived from testing of M5 cladding, and new data exists that may be informative of the fuel pellet contribution to M5 fuel flexural response (ORNL/SPR 2020/1780 Revision 1, Sister Rod Destructive Examinations (FY21) -

Appendix F: Cyclic Integrated Reversible Bending Fatigue Tests, Oak Ridge National Laboratory, March 31, 2022.).

This information is needed to ensure that the package meets the requirements of 10 CFR 71.71 and 10 CFR 71.73.

NAC International Response to Acceptance and Maintenance Tests Evaluation RAI 6.1:

Page 14 of 14 to ED20230032 Page 1 of 2 Enclosure 2 Supporting Calculations for NAC-STC SAR, Revision 23A (Docket No. 71-9235)

NAC International March 2023 to ED20230032 Page 2 of 2 List of Calculations and Supporting Documents

1. Calculation 423-2020, Revision 1 Calculation withheld in its entirety per 10 CFR 2.390.

to ED20230032 Page 1 of 2 Enclosure 3 List of Drawing Changes NAC-STC SAR, Revision 23A (Docket No. 71-9235)

NAC International March 2023

NAC PROPRIETARY INFORMATION to ED20230032 Page 2 of 2 List of Drawing Changes, NAC-STC SAR, Revision 23A Drawing 423-800, Sheets 1 thru 3 of 3, Revision 21P Sheet 1:

1. Revised Delta Note 13 to Lubricate with Never-Seez or Equal and tighten 2 1/4 turns after hand tight for the SAE J512 Ferrule configuration or 3 to 3 1/4 turns after hand tight for the SAE J246 Ferrule configuration. Was "Lubricate with Never-Seez or Equal and tighten 2 1/4 turns after hand tight."
2. Revised Delta Note 15 to Ferrule is SAE J246 (120115) or SAE J512 (060115) compression sleeve for 1-inch tube. Swage ring is 423-811-18 for SAE J246 compression sleeve or 423-811-2 for SAE J512 compression sleeve. Drain Line Boss (Item 21) is standard for SAE J512 compression sleeve or Alternate Configuration (423-811) for SAE J246 compression sleeve. Was, Ferrule is SAE J246 (120115) or SAE J512 j(060115) compression sleeve Sheet 2:
3. Zone E6, revised sheet box zone to "A4", was "A3".
4. Zone A6-A7, revised text under title of Assembly 98 to Storage/Transport, was Storage/Transport and Canistered Contents.

Sheet 3:

5. Zone F2, added callout for Detail F-F.
6. Zone A2/A3 and B2/B3, added Detail F-F.

Drawing 423-800, Sheets 1 thru 3 of 3, Revision 21NP Sheet 1:

1. Delta Note 13, bubbled out note, was "Lubricate with never-seez or equal and tighten 2 1/4 turns after hand tight."

Sheet 2:

1. Zone E6, revised sheet box zone to "A4", was "A3".
2. Zone A6-A7, revised text under title of Assembly 98 to Storage/Transport, was Storage/Transport and Canistered Contents.

Sheet 3:

3. Zones B1-F8, bubbled out section A-A graphics.
4. Zones A2-A3, added proprietary bubble.

to ED20230032 Page 1 of 2 Enclosure 4 Proposed Changes for Certificate of Compliance Revision 23 NAC-STC SAR, Revision 23A (Docket No. 71-9235)

NAC International March 2023

NRC FORM 618 U.S. NUCLEAR REGULATORY COMMISSION (8-2000) 10 CFR 71 CERTIFICATE OF COMPLIANCE FOR RADIOACTIVE MATERIAL PACKAGES 1 a. CERTIFICATE NUMBER b. REVISION NUMBER c. DOCKET NUMBER d. PACKAGE IDENTIFICATION NUMBER PAGE PAGES 9235 24 71-9235 USA/9235/B(U)F-96 1 OF 26

2. PREAMBLE
a. This certificate is issued to certify that the package (packaging and contents) described in Item 5 below meets the applicable safety standards set forth in Title 10, Code of Federal Regulations, Part 71, Packaging and Transportation of Radioactive Material.
b. This certificate does not relieve the consignor from compliance with any requirement of the regulations of the U.S. Department of Transportation or other applicable regulatory agencies, including the government of any country through or into which the package will be transported.
3. THIS CERTIFICATE IS ISSUED ON THE BASIS OF A SAFETY ANALYSIS REPORT OF THE PACKAGE DESIGN OR APPLICATION
a. ISSUED TO (Name and Address) b. TITLE AND IDENTIFICATION OF REPORT OR APPLICATION NAC International NAC International, consolidated application dated 3930 East Jones Bridge Road, Suite 200 July 31, 2019.

Peachtree Corners, Georgia 30092

4. CONDITIONS This certificate is conditional upon fulfilling the requirements of 10 CFR Part 71, as applicable, and the conditions specified below.

5.(a) Packaging (1) Model No.: NAC-STC (2)

Description:

For descriptive purposes, all dimensions are approximate nominal values.

Actual dimensions with tolerances are as indicated on the Drawings.

A steel, lead and polymer (NS4FR) shielded shipping cask for (a) directly loaded irradiated pressurized water reactor (PWR) fuel assemblies, (b) intact, damaged and/or the fuel debris of Yankee Class or Connecticut Yankee irradiated PWR fuel assemblies in a canister, (c) non-fissile, solid radioactive materials (referred to hereafter as Greater Than Class C (GTCC) as defined in 10 CFR Part 61) waste in a canister, and (d) West Valley Demonstration Project (WVDP) High-Level Waste (HLW) canisters in a HLW Overpack. The cask body is a right circular cylinder with an impact limiter at each end. The package has approximate dimensions as follows:

Cavity diameter 71 inches Cavity length 165 inches Cask body outer diameter 87 inches Neutron shield outer diameter 99 inches Lead shield thickness 3.7 inches Neutron shield thickness 5.5 inches Impact limiter diameter 124 inches Package length:

without impact limiters 193 inches with impact limiters 257 inches The maximum gross weight of the package is about 260,000 pounds (lbs.).

NRC FORM 618 U.S. NUCLEAR REGULATORY COMMISSION (8-2000) 10 CFR 71 CERTIFICATE OF COMPLIANCE FOR RADIOACTIVE MATERIAL PACKAGES 1 a. CERTIFICATE NUMBER b. REVISION NUMBER c. DOCKET NUMBER d. PACKAGE IDENTIFICATION NUMBER PAGE PAGES 9235 24 71-9235 USA/9235/B(U)F-96 2 OF 26 5.(a)(2) Description (Continued)

Cask body. The cask body is made of two concentric stainless steel shells. The inner shell is 1.5 inches thick and has an inside diameter of 71 inches. The outer shell is 2.65 inches thick and has an outside diameter of 86.7 inches. The annulus between the inner and outer shells is filled with lead.

The inner and outer shells are welded to steel forgings at the top and bottom ends of the cask. The bottom end of the cask consists of two stainless steel circular plates which are welded to the bottom end forging. The inner bottom plate is 6.2 inches thick and the outer bottom plate is 5.45 inches thick. The space between the two bottom plates is filled with a 2-inch thick disk of a synthetic polymer (NS4FR) neutron shielding material.

The cask is closed by two steel lids which are bolted to the upper end forging. The inner lid (containment boundary) is 9 inches thick and is made of Type 304 stainless steel. The outer lid is 5.25 inches thick and is made of SA-705 Type 630, H1150 (17-4PH) stainless steel.

The inner lid is fastened by 42, 1-1/2-inch diameter bolts and the outer lid is fastened by 36, 1-inch diameter bolts. The inner lid is sealed by two O-ring seals. The outer lid is equipped with a single O-ring seal. The inner lid is fitted with a vent and drain port which are sealed by O-rings and cover plates. The containment system seals may be metallic or Viton. Viton seals are used only for directly-loaded fuel that is to be shipped without long-term interim storage.

The cask body is surrounded by a 1/4-inch thick jacket shell constructed of 24 stainless steel plates. The jacket shell is 99 inches in diameter and is supported by 24 longitudinal stainless steel fins which are connected to the outer shell of the cask body. Copper plates are bonded to the fins. The space between the fins is filled with NS4FR shielding material.

Four lifting trunnions are welded to the top end forging. The package is shipped in a horizontal orientation and is supported by a cradle under the top forging and by two trunnion sockets located near the bottom end of the cask.

Impact limiter. The package is equipped at each end with an impact limiter made of redwood and balsa. Two impact limiter designs consisting of a combination of redwood and balsa wood, encased in Type 304 stainless steel, are provided to limit the g-loads acting on the cask during an accident. The predominantly balsa wood impact limiter is designed for use with all the proposed contents. The predominately redwood impact limiters may only be used with directly loaded fuel (both low and high burnup fuel) or the Yankee-multi-purpose canister (MPC) configuration.

Shield Ring Assembly: The package includes an optional stainless steel ring assembly which, when applicable, is installed on the upper cask body between the top impact limiter and the neutron shield shell in the upper region of the packaging. The shield ring consists of four sectors: bottom sector, top sector and two side sectors.

NRC FORM 618 U.S. NUCLEAR REGULATORY COMMISSION (8-2000) 10 CFR 71 CERTIFICATE OF COMPLIANCE FOR RADIOACTIVE MATERIAL PACKAGES 1 a. CERTIFICATE NUMBER b. REVISION NUMBER c. DOCKET NUMBER d. PACKAGE IDENTIFICATION NUMBER PAGE PAGES 9235 24 71-9235 USA/9235/B(U)F-96 3 OF 26 5.(a)(2) Description (Continued)

The bottom sector of the shield ring assembly is a SA-705, Type 630, 17-4PH stainless steel forging. The top sector and side sectors are fabricated from SA-240, Type 304 stainless steel. The bolt material is SA-193, Grade B6, Type 410 stainless steel for all bolts.

Basket and transportable storage canister. The spent fuel contents are transported either directly-loaded (uncanistered) into a stainless steel fuel basket, or within a stainless steel transportable storage canister (TSC). The WVDP-HLW contents are transported in a stainless steel basket inside a transportable canister referred to as the HLW Overpack or WVDP-HLW Overpack.

Directly-loaded fuel basket. The directly-loaded fuel basket within the cask cavity can accommodate up to 26 PWR fuel assemblies. The fuel assemblies are positioned within square sleeves made of stainless steel. Neutron absorber sheets are encased outside the walls of the sleeves. The sleeves are laterally supported by 31, 1/2-inch thick, 71-inch diameter stainless steel disks. The basket also has 20 heat transfer disks made of Type 6061-T651 aluminum alloy. The support disks and heat transfer disks are connected by six, 1-58-inch diameter by 161-inch long threaded rods made of Type 17-4 PH stainless steel.

Yankee Class MPC and Connecticut Yankee MPC TSC assemblies. The Yankee Class MPC and Connecticut Yankee MPC TSC assemblies include a vessel shell, bottom plate, and welded shield and structural lids that are fabricated from stainless steel. The bottom is a 1-inch thick steel plate for the Yankee-MPC and 1.75-inch thick steel plate for the CY-MPC.

The shell is constructed of 5/8-inch thick rolled steel plate and is 70 inches in diameter. The shield lid is a 5-inch thick steel plate and contains drain and fill penetrations for the canister.

The structural lid is a 3-inch thick steel plate. The canister contains a stainless steel fuel basket that can accommodate up to 36 intact Yankee Class fuel assemblies and Reconfigured Fuel Assemblies (RFAs), or up to 26 intact Connecticut Yankee fuel assemblies with RFAs, with a maximum weight limit of 35,100 lbs. Alternatively, a stainless steel GTCC waste basket is used for up to 24 containers of waste.

Yankee Class MPC TSC fuel basket. The Yankee Class MPC TSC fuel basket configuration can store up to 36 intact Yankee Class fuel assemblies or up to 36 RFAs within square sleeves made of stainless steel. Boral sheets are encased outside the walls of the sleeves.

The sleeves are laterally supported by 22 1/2-inch thick, 69-inch diameter stainless steel disks, which are spaced about 4 inches apart. The support disks are retained by split spacers on eight 1.125-inch diameter stainless steel tie rods. The basket also has 14 heat transfer disks made of Type 6061-T651 aluminum alloy.

Connecticut Yankee MPC fuel basket. The Connecticut Yankee MPC fuel basket is designed to store up to 26 Connecticut Yankee Zirc-clad assemblies enriched to 3.93 wt. percent, stainless steel clad assemblies enriched up to 4.03 wt. percent, RFAs, or damaged fuel in CY-MPC damaged fuel cans (DFCs). Zirc-clad fuel enriched to between 3.93 and 4.61 wt.

percent, such as Westinghouse Vantage 5H fuel, must be stored in the 24-assembly basket.

NRC FORM 618 U.S. NUCLEAR REGULATORY COMMISSION (8-2000) 10 CFR 71 CERTIFICATE OF COMPLIANCE FOR RADIOACTIVE MATERIAL PACKAGES 1 a. CERTIFICATE NUMBER b. REVISION NUMBER c. DOCKET NUMBER d. PACKAGE IDENTIFICATION NUMBER PAGE PAGES 9235 24 71-9235 USA/9235/B(U)F-96 4 OF 26 5.(a)(2) Description (Continued)

Assemblies approved for transport in the 26-assembly configuration may also be shipped in the 24-assembly configuration. The construction of the two basket configurations is identical except that two fuel loading positions of the 26-assembly basket are blocked to form the 24-assembly basket.

RFAs can accommodate up to 64 Yankee Class fuel rods or up to 100 Connecticut Yankee fuel rods, as intact or damaged fuel or fuel debris, in an 8x8 or 10x10 array of stainless steel tubes, respectively. Intact and damaged Yankee Class or Connecticut Yankee fuel rods, as well as fuel debris, are held in the fuel tubes. The RFAs have the same external dimensions as a standard intact Yankee Class, or Connecticut Yankee fuel assembly.

LaCrosse boiling water reactor multi-purpose canister MPC-LACBWR TSC assembly. The LaCrosse boiling water reactor multi-purpose canister MPC-LACBWR TSC assembly consists of a vessel shell, a bottom plate and a welded closure lid/closure ring assembly that are fabricated from stainless steel. The MPC-LACBWR TSC bottom stainless steel thickness is 1.25 inches. The shell is 1/2-inch thick rolled steel plate and 70.6 inches in diameter. The closure lid is a 7.0-inch thick steel plate/forging. The closure lid redundant welded closure is provided by a closure ring. The closure lid is provided with vent and drain penetrations to access the TSC cavity and they are closed by redundant welded port cover plates. The MPC-LACBWR TSC fuel basket is designed to hold up to 68 irradiated LACBWR fuel assemblies, including up to 32 damaged fuel assemblies contained in DFCs and up to 36 intact fuel assemblies.

TSC GTCC basket. The TSC GTCC basket positions up to 24 Yankee Class or Connecticut Yankee waste containers within square stainless steel sleeves. The Yankee Class basket is supported laterally by eight 1-inch thick, 69-inch diameter stainless steel disks. The Yankee Class basket sleeves are supported full-length by 2.5-inch thick stainless steel support walls.

The support disks are welded into position at the support walls. The Connecticut Yankee GTCC basket is a right-circular cylinder formed by a series of 1.75-inch thick Type 304 stainless steel plates, laterally supported by 12 equally spaced welded 1.25-inch thick Type 304 stainless steel outer ribs. The GTCC waste containers accommodate radiation activated and surface contaminated steel, cutting debris (dross) or filter media, and have the same external dimensions of Yankee Class or Connecticut Yankee fuel assemblies.

The Yankee Class TSC is axially positioned in the cask cavity by two aluminum honeycomb spacers. The spacers, which are enclosed in a Type 6061-T651 aluminum alloy shell, position the canister within the cask during normal conditions of transport. The bottom spacer is 14 inches high and 70-inches in diameter, and the top spacer is 28 inches high and also 70 inches in diameter.

The Connecticut Yankee TSC is axially positioned in the cask cavity by one stainless steel spacer located in the bottom of the cask cavity.

NRC FORM 618 U.S. NUCLEAR REGULATORY COMMISSION (8-2000) 10 CFR 71 CERTIFICATE OF COMPLIANCE FOR RADIOACTIVE MATERIAL PACKAGES 1 a. CERTIFICATE NUMBER b. REVISION NUMBER c. DOCKET NUMBER d. PACKAGE IDENTIFICATION NUMBER PAGE PAGES 9235 24 71-9235 USA/9235/B(U)F-96 5 OF 26 5.(a)(2) Description (Continued)

WVDP-HLW Overpack and transport inserts. The WVDP-HLW Overpack measures 126.5 in.

in length by 70.6 inches in diameter. The WVDP-HLW Overpack consists of three (3) principal components, namely the WVDP-HLW Overpack shell, basket, and closure lid. The HLW Overpack consists of an annular right circular shell closed at one end by a bottom plate.

The shell is constructed of 3/8-inch rolled dual certified Type 304/304L stainless steel plate.

The edges of the rolled plates are joined with full penetration welds. The dual certified Type 304/304L stainless steel bottom plate is also attached to the shell by using a full penetration weld. The basket is an assembly of five vertical cylindrical cells held by supporting plates, all fabricated from 304 stainless steel. The baskets cells position up to five (5) HLW canisters, melter-evacuated canisters, or HLW debris canisters inside the Overpack. For shipments of less than 5 HLW canisters (i.e., partially loaded basket), transport inserts occupy the unused cylindrical cells. The material used for fabricating the transport insert is 304 stainless steel.

Spacer assemblies for WVDP-HLW Overpack. Two spacer assemblies serve for configuration control of the WVDP-HLW Overpack within the NAC-STC package. One spacer is positioned below the HLW Overpack and a second spacer is positioned above the HLW Overpack. Both spacer assemblies are constructed of concentric rings of 304 stainless steel welded to a stainless steel base plate.

5.(a)(3) Drawings (i) The cask is constructed and assembled in accordance with the following Nuclear Assurance Corporation (now NAC International) Drawing Nos.:

423-800, sheets 1-3, Rev. 21P and 21NP 423-811, sheets 1-2, Rev. 13 423-802, sheets 1-7, Rev. 27 423-812, Rev. 8 423-803, sheets 1-2, Rev. 15 423-900, Rev. 9 423-804, sheets 1-3, Rev. 12 423-209, Rev. 3 423-805, sheets 1-2, Rev. 9 423-210, Rev. 3 423-806, sheets 1-2, Rev. 14 423-901, sheets 1-2, Rev. 3 423-807, sheets 1-3, Rev. 6 423-927, Rev. 1P & 2NP (ii) For the directly loaded configuration, the basket is constructed and assembled in accordance with the following Nuclear Assurance Corporation (now NAC International) Drawing Nos.:

423-870, Rev. 8 423-874, Rev. 3 423-871, Rev. 5 423-875, sheets 1-2, Rev. 11 423-872, Rev. 7 423-878, sheets 1-2, Rev. 5 423-873, Rev. 2 423-880, Rev. 3P and Rev 1NP

NRC FORM 618 U.S. NUCLEAR REGULATORY COMMISSION (8-2000) 10 CFR 71 CERTIFICATE OF COMPLIANCE FOR RADIOACTIVE MATERIAL PACKAGES 1 a. CERTIFICATE NUMBER b. REVISION NUMBER c. DOCKET NUMBER d. PACKAGE IDENTIFICATION NUMBER PAGE PAGES 9235 24 71-9235 USA/9235/B(U)F-96 6 OF 26 5.(a)(3) Drawings (iii) For the Yankee Class TSC configuration, the canister, and the fuel and GTCC waste baskets are constructed and assembled in accordance with the following NAC International Drawing Nos.:

455-800, sheets 1-2, Rev. 2 455-888, sheets 1-2, Rev. 8 455-801, sheets 1-2, Rev. 4 455-891, sheets 1-2, Rev. 1 455-820, sheets 1-2, Rev. 3 455-891, sheets 1-3, Rev. 2P01 455-870, Rev. 5 455-892, sheets 1-2, Rev. 3 455-871, sheets 1-2, Rev. 8 455-892, sheets 1-3, Rev. 3P01 455-871, sheets 1-3, Rev. 7P21 455-893, Rev. 3 455-872, sheets 1-2, Rev. 12 455-894, Rev. 2 455-872, sheets 1-2, Rev. 11P11 455-895, sheets 1-2, Rev. 5 455-873, Rev. 4 455-895, sheets 1-2, Rev. 5P01 455-881, sheets 1-3, Rev. 8 455-902, sheets 1-5, Rev. 0P41 455-887, sheets 1-3, Rev. 4 455-919, Rev. 2 455-901, Rev. 0P01 (iv) For the Yankee Class TSC configuration, RFAs are constructed and assembled in accordance with the following Yankee Atomic Electric Company Drawing Nos.:

YR-00-060, Rev. D3 YR-00-063, Rev. D4 YR-00-061, Rev. D4 YR-00-064, Rev. D4 YR-00-062, sheet 1, Rev. D4 YR-00-065, Rev. D2 YR-00-062, sheet 2, Rev. D2 YR-00-066, sheet 1, Rev. D5 YR-00-062, sheet 3, Rev. D1 YR-00-066, sheet 2, Rev. D3 (v) The Balsa Impact Limiters are constructed and assembled in accordance with the following NAC International Drawing Nos.:

423-257, Rev. 3 423-843, Rev. 6 423-258, Rev. 3 423-859, Rev. 1 1 Drawing defines the alternate configuration that accommodates the Yankee-MPC damaged fuel can.

NRC FORM 618 U.S. NUCLEAR REGULATORY COMMISSION (8-2000) 10 CFR 71 CERTIFICATE OF COMPLIANCE FOR RADIOACTIVE MATERIAL PACKAGES 1 a. CERTIFICATE NUMBER b. REVISION NUMBER c. DOCKET NUMBER d. PACKAGE IDENTIFICATION NUMBER PAGE PAGES 9235 24 71-9235 USA/9235/B(U)F-96 7 OF 26 5.(a)(3) Drawings (Continued)

(vi) For the Connecticut Yankee TSC configuration, the canister and the fuel and GTCC waste baskets are constructed and assembled in accordance with the following NAC International Drawing Nos.:

414-801, sheets 1-2, Rev. 2 414-873, Rev.2 414-820, Rev.0 414-874, Rev.0 414-870, Rev.3 414-875, Rev.0 414-871, sheets 1-2, Rev.6 414-881, sheets 1-2, Rev. 4 414-872, sheets 1-3, Rev.6 414-882, sheets 1-2, Rev.4 414-887, sheets1-4, Rev. 4 414-888, sheets 1-2, Rev 4 414-893, sheets 1-2, Rev. 3 414-889, sheets 1-3, Rev. 7 414-894, Rev. 0 414-891, Rev. 3 414-895, sheets 1-2, Rev. 4 414-892, sheets 1-3, Rev. 3 (vii) For the Connecticut Yankee TSC configuration, DFCs and RFAs are constructed and assembled in accordance with the following NAC International Drawing Nos.:

414-901, Rev. 1 414-903, sheets 1-2, Rev. 1 414-902, sheets 1-3, Rev. 3 414-904, sheets 1-3, Rev. 0 (viii) For the Dairyland Power Cooperative LaCrosse BWR transport package and TSC configuration, the TSC, fuel basket, and DFCs are constructed and assembled in accordance with the following NAC International Drawing Nos.:

630045-800, sheets 1-2, Rev. 0 630045-820, Rev. 0 630045-870, Rev. 2 630045-871, sheets 1-4, Rev. 2 630045-872, sheets 1-2, Rev. 1 630045-873, Rev. 1 630045-877, Rev. 1 630045-878, Rev. 1 630045-881, sheets 1-2, Rev. 1 630045-893, Rev. 1 630045-894, Rev. 1 630045-895, sheets 1-3, Rev. 1 630045-901, Rev. 0 630045-902, sheets 1-2, Rev. 1 (ix) For the West Valley Demonstration Project High-Level Waste, the HLW Overpack (shell, basket, and closure lid), overpack spacers, and transport inserts are constructed and assembled in accordance with the following NAC International Drawing Nos.:

630087-501, sheets 1-2, Rev. 1 630087-511, Rev. 1 630087-504, Rev. 0 630087-512, Rev. 1 630087-505, Rev. 0 630087-513, sheets 1-3, Rev. 1 630087-510, Rev. 1 630087-514, Rev. 0

NRC FORM 618 U.S. NUCLEAR REGULATORY COMMISSION (8-2000) 10 CFR 71 CERTIFICATE OF COMPLIANCE FOR RADIOACTIVE MATERIAL PACKAGES 1 a. CERTIFICATE NUMBER b. REVISION NUMBER c. DOCKET NUMBER d. PACKAGE IDENTIFICATION NUMBER PAGE PAGES 9235 24 71-9235 USA/9235/B(U)F-96 8 OF 26 5.(b) Contents (1) Type and form of material (i) Irradiated PWR fuel assemblies with uranium oxide pellets.

(1) For low burnup fuel assemblies, the maximum burnup is 45 GWd/MTU. The minimum fuel cool time is defined in the Fuel Cool Time Table (Table 2),

below. The maximum heat load per assembly is 850 watts. Prior to irradiation, the fuel assemblies must be within the dimensions and specifications in Table 1:

Table 1 - Fuel Assembly Characteristics Framatome 17x17 Assembly Type 14x14 15x15 16x16 17x17 -Cogema (OFA) 17x17 Zirconium Zirconium Zirconium Zirconium Zirconium Zirconium Cladding Material Alloy Alloy Alloy Alloy Alloy Alloy Maximum Initial Uranium 407 469 402.5 464 426 464 Content (kg/assembly)

Maximum Initial Enrichment 4.2 4.2 4.2 4.2 4.2 4.5 (wt% 235U)

Minimum Initial Enrichment 1.7 1.7 1.7 1.7 1.7 1.7 (wt% 235U)

Assembly Cross- Section 7.76 8.20 8.10 8.43 8.425 8.43 (inches) to 8.11 to 8.54 to 8.14 to 8.54 to 8.518 Number of Fuel Rods per 176 204 236 264 264 264(1)

Assembly to 179 to 216 0.422 0.418 0.374 0.3714 Fuel Rod OD (inch) 0.382 0.360 to 0.440 to 0.430 to 0.379 to 0.3740 Minimum Cladding Thickness 0.023 0.024 0.025 0.023 0.023 0.0204 (inch) 0.344 0.358 0.3225 0.3224 Pellet Diameter (inch) 0.325 0.3088 to 0.377 to 0.390 to 0.3232 to 0.3230 Maximum Active Fuel Length 146 144 137 144 144 144.25 (inches)

Note:

(1) Fuel rod positions may also be occupied by solid poison shim rods or solid zirconium alloy or stainless steel fill rods that displace an amount of water greater than or equal to that displaced by the original fuel rod(s).

(2) Fuel acceptability for loading is not restricted to the vendor indicated in Table 1, provided that the fuel assembly meets the fuel assembly characteristics in Table 1.

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Table 2 - FUEL COOL TIME TABLE Minimum Fuel Cool Time in Years Fuel Assembly Burnup (BU)

Uranium BU < 30 30 < BU < 35 35 < BU < 40 40 < BU < 45 Enrichment GWD/MTU GWD/MTU GWD/MTU GWD/MTU (wt% 235U)

Fuel Type 14x14 15x15 16x16 17x17 14x14 15x15 16x16 17x17 14x14 15x15 16x16 17x17 14x14 15x15 16x16 17x17 1.7<E<1.9 8 7 6 7 10 10 7 9 -- -- -- -- -- -- -- --

1.9<E<2.1 7 7 5 7 9 9 7 8 12 13 9 11 -- -- -- --

2.1<E<2.3 7 7 5 6 9 8 6 8 11 11 8 10 -- -- -- --

2.3<E<2.5 6 6 5 6 8 8 6 7 10 10 8 9 14 15 12 14 2.5<E<2.7 6 6 5 6 8 7 6 7 10 9 7 9 13 14 10 12 2.7<E<2.9 6 6 5 5 7 7 5 6 9 9 7 8 12 12 9 11 2.9<E<3.1 6 5 5 5 7 7 5 6 9 8 6 8 11 11 8 10 3.1<E<3.3 5 5 5 5 7 6 5 6 8 8 6 7 10 10 8 9 3.3<E<3.5 5 5 5 5 6 6 5 6 8 7 6 7 10 10 7 9 3.5<E<3.7 5 5 5 5 6 6 5 6 7 7 6 7 9 9 7 9 3.7<E<3.9 5 5 5 5 6 6 5 6 7 7 6 7 9 9 7 9 3.9<E<4.1 5 5 5 5 6 6 5 6 7 7 6 7 8 9 7 9 4.1<E<4.2 5 5 5 5 5 6 5 6 6 7 6 7 8 8 7 9 4.2<E<4.3 -- -- -- 5(1) -- -- -- 6(1) -- -- -- 7(1) -- -- -- 9(1) 4.3<E<4.5 -- -- -- 5(1) -- -- -- 6(1) -- -- -- 7(1) -- -- -- 8(1)

Note:

(1)

Framatome-Cogema 17x17 fuel only.

NRC FORM 618 U.S. NUCLEAR REGULATORY COMMISSION (8-2000) 10 CFR 71 CERTIFICATE OF COMPLIANCE FOR RADIOACTIVE MATERIAL PACKAGES 1 a. CERTIFICATE NUMBER b. REVISION NUMBER c. DOCKET NUMBER d. PACKAGE IDENTIFICATION NUMBER PAGE PAGES 9235 24 71-9235 USA/9235/B(U)F-96 10 OF 26 5.(b)(1)(i) Contents - Type and Form of Material - Irradiated PWR fuel assemblies (Continued)

(2) Undamaged 17x17 Advanced Fuel Assembly PWR high burnup (i.e., assembly average burnup exceeding 45 GWd/MTU) fuel assemblies that meet the fuel assembly criteria for Framatome-Cogema 17x17 fuel listed in Table 1 for content 5.(b)(1)(i)(1). The maximum assembly decay heat may not exceed 1.71 kW, and the maximum burnup may not exceed 55 GWd/MTU, provided the loading pattern meets the requirements of configuration A, B or C, as shown in NAC International Drawing No. 423-800. Only Zirc-4 and M5 Zirconium alloy cladding may be loaded for any shipment. Gadolinium based integral fuel burnable absorber rods (IFBAs) are permitted, but boron-based IFBAs are not. The minimum fuel assembly cool time is determined from Tables 3 through 5, depending on loading configuration. The fuel assemblies shall not have been previously stored in an independent spent fuel storage installation licensed under 10 CFR Part 72.

(3) Undamaged 17x17 Advanced Fuel Assembly PWR low burnup (i.e., assembly average burnup less than or equal to 45 GWd/MTU) fuel assemblies that meet the fuel assembly criteria for Framatome-Cogema 17x17 fuel listed in Table 1 for content 5.(b)(1)(i)(1). The maximum heat load per assembly is 850 watts and the maximum burnup may not exceed 45 GWd/MTU. The minimum fuel assembly cool time is determined from Table 6. The use of the shield ring assembly, as configured in NAC International Drawing No. 423-927, is required.

(4) Undamaged 17x17 Advanced Fuel Assembly PWR high burnup (i.e., assembly average burnup exceeding 45 GWd/MTU) fuel assemblies that meet the fuel assembly criteria for Framatome-Cogema 17x17 fuel listed in Table 1 for content 5.(b)(1)(i)(1). The maximum assembly decay heat may not exceed 1.71 kW, and the maximum burnup may not exceed 55 GWd/MTU, provided the loading pattern meets the requirements of configuration A, B or C as shown in NAC International Drawing No. 423-800. Only Zirc-4 and M5 Zirconium alloy cladding may be loaded for any shipment. Gadolinium based integral fuel burnable absorber rods (IFBAs) are permitted, but boron-based IFBAs are not. The minimum fuel assembly cool time is determined from Tables 7 through 9, depending on loading configuration. The fuel assemblies shall not have been previously stored in an independent spent fuel storage installation licensed under 10 CFR Part 72.

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Minimum Fuel Cool Time in Years Min. initial Assembly Average Burnup [GWd/MTU]

Cobalt Assembly Avg.

[g/kg] 45<B46 46<B47 47<B48 48<B49 49<B50 50<B51 51<B52 52<B53 53<B54 54<B55 Enr. [wt. %]

2.9 E < 3.1 4.0 4.0 4.3 4.9 5.6 6.3 7.0 7.8 8.7 -

3.1 E < 3.3 4.0 4.0 4.0 4.1 4.7 5.3 6.0 6.8 7.5 8.3 3.3 E < 3.5 4.0 4.0 4.0 4.0 4.1 4.5 5.1 5.8 6.5 7.2 3.5 E < 3.7 4.0 4.0 4.0 4.0 4.1 4.2 4.3 4.9 5.5 6.2 0.4 3.7 E < 3.9 4.0 4.0 4.0 4.0 4.0 4.2 4.3 4.4 4.7 5.3 3.9 E < 4.1 4.0 4.0 4.0 4.0 4.0 4.1 4.2 4.3 4.4 4.5 4.1 E < 4.3 4.0 4.0 4.0 4.0 4.0 4.1 4.2 4.3 4.4 4.5 4.3 E 4.5 4.0 4.0 4.0 4.0 4.0 4.0 4.1 4.2 4.3 4.4 2.9 E < 3.1 6.9 7.4 8.0 8.6 9.1 9.8 10.4 11.1 11.8 -

3.1 E < 3.3 6.2 6.7 7.2 7.8 8.3 8.9 9.5 10.1 10.8 11.5 3.3 E < 3.5 5.6 6.0 6.5 7.0 7.6 8.1 8.7 9.3 9.9 10.6 3.5 E < 3.7 5.0 5.4 5.9 6.4 6.8 7.4 7.9 8.5 9.0 9.7 0.8 3.7 E < 3.9 4.5 4.9 5.3 5.7 6.2 6.7 7.2 7.7 8.3 8.8 3.9 E < 4.1 4.0 4.4 4.7 5.2 5.6 6.0 6.5 7.0 7.5 8.1 4.1 E < 4.3 4.0 4.0 4.3 4.6 5.0 5.5 5.9 6.4 6.9 7.4 4.3 E 4.5 4.0 4.0 4.0 4.2 4.5 4.9 5.4 5.8 6.3 6.7 2.9 E < 3.1 9.4 9.9 10.4 11.0 11.5 12.0 12.6 13.3 13.8 -

3.1 E < 3.3 8.8 9.2 9.7 10.2 10.7 11.3 11.8 12.4 13.0 13.6 3.3 E < 3.5 8.1 8.6 9.0 9.5 10.0 10.5 11.1 11.6 12.1 12.7 3.5 E < 3.7 7.6 8.0 8.4 8.9 9.3 9.8 10.3 10.9 11.4 11.9 1.2 3.7 E < 3.9 7.0 7.4 7.9 8.3 8.7 9.2 9.6 10.1 10.7 11.2 3.9 E < 4.1 6.6 6.9 7.3 7.7 8.1 8.6 9.0 9.5 10.0 10.5 4.1 E < 4.3 6.1 6.5 6.8 7.2 7.6 8.0 8.4 8.9 9.3 9.8 4.3 E 4.5 5.7 6.0 6.4 6.7 7.1 7.5 7.9 8.3 8.8 9.2

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Minimum Fuel Cool Time in Years Min. initial Assembly Average Burnup [GWd/MTU]

Cobalt Assembly Avg.

[g/kg] 45<B46 46<B47 47<B48 48<B49 49<B50 50<B51 51<B52 52<B53 53<B54 54<B55 Enr. [wt. %]

2.9 E < 3.1 4.4 5.0 5.7 6.5 7.3 8.2 9.1 10.0 11.0 -

3.1 E < 3.3 4.3 4.4 4.8 5.5 6.2 7.0 7.9 8.8 9.7 10.7 3.3 E < 3.5 4.3 4.4 4.5 4.6 5.2 6.0 6.7 7.6 8.4 9.4 3.5 E < 3.7 4.2 4.3 4.4 4.5 4.7 5.0 5.7 6.5 7.3 8.2 0.4 3.7 E < 3.9 4.2 4.3 4.4 4.5 4.6 4.8 4.9 5.5 6.3 7.0 3.9 E < 4.1 4.1 4.2 4.3 4.5 4.6 4.7 4.8 5.0 5.3 6.1 4.1 E < 4.3 4.1 4.2 4.3 4.4 4.5 4.6 4.8 4.9 5.0 5.2 4.3 E 4.5 4.0 4.1 4.3 4.4 4.5 4.6 4.7 4.9 5.0 5.2 2.9 E < 3.1 8.0 8.6 9.2 9.9 10.6 11.4 12.1 12.9 13.7 -

3.1 E < 3.3 7.2 7.8 8.4 9.0 9.7 10.4 11.1 11.8 12.6 13.4 3.3 E < 3.5 6.5 7.0 7.6 8.1 8.8 9.4 10.1 10.8 11.5 12.3 3.5 E < 3.7 5.8 6.3 6.8 7.4 8.0 8.6 9.2 9.9 10.6 11.3 0.8 3.7 E < 3.9 5.2 5.7 6.1 6.7 7.2 7.8 8.4 9.0 9.6 10.3 3.9 E < 4.1 4.7 5.1 5.6 6.0 6.5 7.0 7.6 8.2 8.8 9.4 4.1 E < 4.3 4.2 4.6 5.0 5.4 5.9 6.4 6.9 7.5 8.0 8.6 4.3 E 4.5 4.0 4.2 4.5 4.9 5.3 5.8 6.3 6.8 7.3 7.9 2.9 E < 3.1 10.4 11.0 11.6 12.1 12.8 13.5 14.1 14.8 15.6 -

3.1 E < 3.3 9.6 10.2 10.8 11.3 11.9 12.5 13.2 13.8 14.5 15.3 3.3 E < 3.5 9.0 9.5 10.0 10.6 11.1 11.7 12.3 12.9 13.6 14.2 3.5 E < 3.7 8.3 8.8 9.3 9.8 10.4 10.9 11.5 12.0 12.7 13.4 1.2 3.7 E < 3.9 7.8 8.2 8.7 9.1 9.6 10.2 10.7 11.3 11.9 12.5 3.9 E < 4.1 7.2 7.6 8.1 8.5 9.0 9.5 10.0 10.6 11.1 11.7 4.1 E < 4.3 6.7 7.1 7.5 8.0 8.4 8.9 9.4 9.9 10.4 11.0 4.3 E 4.5 6.3 6.6 7.0 7.4 7.9 8.3 8.8 9.2 9.7 10.2

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Minimum Fuel Cool Time in Years Min. initial Assembly Average Burnup [GWd/MTU]

Cobalt Assembly Avg.

[g/kg] 45<B46 46<B47 47<B48 48<B49 49<B50 50<B51 51<B52 52<B53 53<B54 54<B55 Enr. [wt. %]

2.9 E < 3.1 8.0 9.1 10.3 11.6 12.9 14.2 15.6 17.0 18.4 -

3.1 E < 3.3 6.9 7.8 8.8 10.0 11.2 12.5 13.8 15.2 16.5 17.9 3.3 E < 3.5 5.8 6.7 7.5 8.5 9.7 10.9 12.1 13.4 14.8 16.1 3.5 E < 3.7 5.3 5.7 6.5 7.3 8.3 9.4 10.6 11.8 13.1 14.4 0.4 3.7 E < 3.9 5.3 5.4 5.6 6.3 7.1 8.0 9.1 10.2 11.5 12.7 3.9 E < 4.1 5.2 5.4 5.6 5.8 6.1 6.9 7.8 8.9 10.0 11.2 4.1 E < 4.3 5.1 5.3 5.5 5.7 5.9 6.0 6.8 7.6 8.6 9.7 4.3 E 4.5 5.1 5.3 5.5 5.6 5.8 6.0 6.2 6.6 7.5 8.5 2.9 E < 3.1 11.4 12.2 13.1 14.0 15.1 16.2 17.4 18.6 19.8 -

3.1 E < 3.3 10.4 11.2 11.9 12.8 13.7 14.7 15.8 17.0 18.1 19.4 3.3 E < 3.5 9.4 10.2 10.9 11.7 12.5 13.4 14.4 15.5 16.6 17.7 3.5 E < 3.7 8.6 9.3 10.0 10.7 11.5 12.3 13.2 14.1 15.1 16.2 0.8 3.7 E < 3.9 7.8 8.5 9.1 9.8 10.5 11.3 12.0 12.9 13.8 14.8 3.9 E < 4.1 7.4 7.7 8.3 9.0 9.6 10.4 11.1 11.9 12.7 13.6 4.1 E < 4.3 7.1 7.3 7.6 8.2 8.8 9.5 10.2 10.9 11.7 12.5 4.3 E 4.5 6.8 7.0 7.2 7.5 8.1 8.7 9.4 10.0 10.8 11.5 2.9 E < 3.1 13.6 14.3 15.1 15.9 16.7 17.7 18.7 19.8 20.9 -

3.1 E < 3.3 12.7 13.4 14.0 14.8 15.6 16.4 17.3 18.3 19.4 20.5 3.3 E < 3.5 11.8 12.5 13.1 13.8 14.6 15.3 16.1 17.0 17.9 19.0 3.5 E < 3.7 11.2 11.7 12.3 12.9 13.6 14.3 15.1 15.9 16.7 17.7 1.2 3.7 E < 3.9 10.8 11.1 11.5 12.1 12.8 13.4 14.1 14.9 15.6 16.5 3.9 E < 4.1 10.4 10.7 11.0 11.4 11.9 12.6 13.3 13.9 14.7 15.4 4.1 E < 4.3 10.1 10.3 10.6 10.8 11.2 11.8 12.4 13.1 13.8 14.5 4.3 E 4.5 9.9 10.1 10.2 10.5 10.7 11.1 11.7 12.3 12.9 13.6

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Minimum Fuel Cool Time in Years Cobalt content limited to 1.2 g/kg Min. initial Assembly Average Burnup [GWd/MTU]

Assembly Avg. B10 10<B15 15<B20 20<B25 25<B30 30<B 32.5<B 35<B 37.5<B 40<B41 41<B42 42<B43 43<B44 44<B45 Enr. [wt. %] 32.5 35 37.5 40 1.7 E < 1.9 4.0 4.0 4.0 4.5 5.9 7.2 9.8 1.9 E < 2.1 4.0 4.0 4.0 4.4 5.5 6.4 8.3 11.4 15.3 2.1 E < 2.3 4.0 4.0 4.0 4.3 5.2 5.9 7.2 9.7 13.2 2.3 E < 2.5 4.0 4.0 4.0 4.2 4.9 5.6 6.6 8.4 11.4 12.8 14.3 15.9 17.6 19.2 2.5 E < 2.7 4.0 4.0 4.0 4.1 4.8 5.3 6.0 7.4 9.8 11.1 12.5 13.9 15.5 17.1 2.7 E < 2.9 4.0 4.0 4.0 4.0 4.7 5.0 5.7 6.7 8.5 9.6 10.8 12.1 13.6 15.1 2.9 E < 3.1 4.0 4.0 4.0 4.0 4.6 5.0 5.6 6.2 7.6 8.4 9.4 10.6 11.9 13.3 3.1 E < 3.3 4.0 4.0 4.0 4.0 4.6 5.0 5.5 6.0 6.9 7.6 8.3 9.2 10.4 11.7 3.3 E < 3.5 4.0 4.0 4.0 4.0 4.6 4.9 5.4 6.0 6.7 7.0 7.5 8.2 9.1 10.2 3.5 E < 3.7 4.0 4.0 4.0 4.0 4.5 4.9 5.4 5.9 6.6 6.9 7.2 7.6 8.2 9.0 3.7 E < 3.9 4.0 4.0 4.0 4.0 4.5 4.9 5.3 5.9 6.5 6.8 7.1 7.5 7.9 8.4 3.9 E < 4.1 4.0 4.0 4.0 4.0 4.5 4.8 5.3 5.8 6.5 6.8 7.0 7.4 7.8 8.3 4.1 E < 4.3 4.0 4.0 4.0 4.0 4.5 4.8 5.3 5.8 6.4 6.7 7.0 7.4 7.7 8.1 4.3 E < 4.5 4.0 4.0 4.0 4.0 4.4 4.8 5.2 5.8 6.4 6.6 6.9 7.3 7.7 8.1

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Minimum Fuel Cool Time in Years Cobalt content limited to 1.2 g/kg Min. initial Assembly Average Burnup [GWd/MTU]

Assembly Avg.

Enr. [wt. %] 45<B46 46<B47 47<B48 48<B49 49<B50 50<B51 51<B52 52<B53 53<B54 54<B55 2.9 E < 3.1 4.0 4.0 4.5 5.0 5.7 6.3 6.9 7.6 8.4 -

3.1 E < 3.3 4.0 4.0 4.0 4.3 4.8 5.4 6.0 6.7 7.4 8.1 3.3 E < 3.5 4.0 4.0 4.0 4.1 4.2 4.7 5.2 5.8 6.4 7.1 3.5 E < 3.7 4.0 4.0 4.0 4.0 4.1 4.2 4.5 5.0 5.6 6.2 3.7 E < 3.9 4.0 4.0 4.0 4.0 4.1 4.2 4.3 4.4 4.8 5.4 3.9 E < 4.1 4.0 4.0 4.0 4.0 4.0 4.1 4.2 4.3 4.5 4.7 4.1 E < 4.3 4.0 4.0 4.0 4.0 4.0 4.1 4.2 4.3 4.4 4.5 4.3 E 4.5 4.0 4.0 4.0 4.0 4.0 4.0 4.1 4.2 4.4 4.5 Table 8 - Fuel Cool Time Table (Configuration B 17x17 PWR HBU)

Minimum Fuel Cool Time in Years Cobalt content limited to 1.2 g/kg Min. initial Assembly Average Burnup [GWd/MTU]

Assembly Avg.

45<B46 46<B47 47<B48 48<B49 49<B50 50<B51 51<B52 52<B53 53<B54 54<B55 Enr. [wt. %]

2.9 E < 3.1 4.4 4.9 5.5 6.1 6.8 7.6 8.3 9.1 10.0 -

3.1 E < 3.3 4.4 4.5 4.7 5.3 5.9 6.6 7.3 8.0 8.8 9.7 3.3 E < 3.5 4.3 4.4 4.5 4.7 5.1 5.7 6.3 7.0 7.8 8.6 3.5 E < 3.7 4.2 4.4 4.5 4.6 4.7 4.9 5.5 6.1 6.8 7.5 3.7 E < 3.9 4.2 4.3 4.4 4.5 4.7 4.8 4.9 5.3 5.9 6.6 3.9 E < 4.1 4.1 4.3 4.4 4.5 4.6 4.8 4.9 5.0 5.2 5.7 4.1 E < 4.3 4.1 4.2 4.3 4.4 4.5 4.7 4.8 5.0 5.1 5.3 4.3 E 4.5 4.0 4.2 4.3 4.4 4.5 4.6 4.8 4.9 5.0 5.2

NRC FORM 618 U.S. NUCLEAR REGULATORY COMMISSION (8-2000) 10 CFR 71 CERTIFICATE OF COMPLIANCE FOR RADIOACTIVE MATERIAL PACKAGES

1. a. CERTIFICATE NUMBER b. REVISION NUMBER c. DOCKET NUMBER d. PACKAGE IDENTIFICATION NUMBER PAGE PAGES 9235 24 71-9235 USA/9235/B(U)F-96 16 OF 26 Table 9 - Fuel Cool Time Table (Configuration C 17x17 PWR HBU)

Minimum Fuel Cool Time in Years Cobalt content limited to 1.2 g/kg Min. initial Assembly Average Burnup [GWd/MTU]

Assembly Avg.

45<B46 46<B47 47<B48 48<B49 49<B50 50<B51 51<B52 52<B53 53<B54 54<B55 Enr. [wt. %]

2.9 E < 3.1 7.4 8.2 9.1 10.0 11.0 12.0 13.1 14.3 15.5 -

3.1 E < 3.3 6.4 7.1 7.9 8.8 9.7 10.7 11.6 12.7 13.9 15.1 3.3 E < 3.5 5.5 6.2 6.9 7.7 8.5 9.4 10.4 11.3 12.4 13.5 3.5 E < 3.7 5.4 5.6 6.0 6.7 7.5 8.3 9.2 10.1 11.0 12.0 3.7 E < 3.9 5.3 5.5 5.7 5.9 6.6 7.3 8.1 8.9 9.8 10.8 3.9 E < 4.1 5.2 5.4 5.6 5.8 6.0 6.4 7.1 7.9 8.7 9.6 4.1 E < 4.3 5.2 5.4 5.6 5.7 5.9 6.1 6.4 7 7.7 8.5 4.3 E 4.5 5.1 5.3 5.5 5.7 5.9 6.0 6.3 6.6 6.8 7.6

NRC FORM 618 U.S. NUCLEAR REGULATORY COMMISSION (8-2000) 10 CFR 71 CERTIFICATE OF COMPLIANCE FOR RADIOACTIVE MATERIAL PACKAGES 1 a. CERTIFICATE NUMBER b. REVISION NUMBER c. DOCKET NUMBER d. PACKAGE IDENTIFICATION NUMBER PAGE PAGES 9235 24 71-9235 USA/9235/B(U)F-96 17 OF 26 5.(b)(1) Contents - Type and Form of Material (Continued)

(ii) Irradiated intact Yankee Class PWR fuel assemblies or RFAs within the TSC. The maximum initial fuel pin pressure is 315 psig. The fuel assemblies consist of uranium oxide pellets with the specifications, based on design nominal or operating history record values, listed below:

Table 10 - Yankee Class Fuel Assembly Characteristics Assembly UN CE 1 West. Exxon 2 Yankee Yankee Manufacturer/Type 16x16 16x16 18x18 16x16 RFA DFC Cladding Material Zircaloy Zircaloy SS Zircaloy Zirc/SS Zirc/SS Maximum Number of Rods 237 231 305 231 64 305 per Assembly Maximum Initial Uranium 246 240 287 240 70 287 Content (kg/assembly)

Maximum Initial Enrichment 4.0 3.9 4.94 4.0 4.94 4.97 3 (wt% 235U)

Minimum Initial Enrichment 4.0 3.7 4.94 3.5 3.5 3.5 3 (wt% 235U)

Maximum Assembly Weight 950 950 950 950 950 950 (lbs)

Maximum Burnup 32,000 36,000 32,000 36,000 36,000 36,000 (MWD/MTU)

Maximum Decay Heat per 0.28 0.347 0.28 0.34 0.11 0.347 Assembly (kW)

Minimum Cool Time 11.0 8.1 22.0 10.0 8.0 8.0 (yrs)

Maximum Active Fuel Length (in) 91 91 92 91 92 N/A Notes:

1.

Combustion Engineering (CE) fuel with a maximum burnup of 32,000 MWD/MTU, a minimum enrichment of 3.5 wt. % 235U, a minimum cool time of 8.0 years, and a maximum decay heat per assembly of 0.304 kW is authorized.

2.

Exxon assemblies with stainless steel in-core hardware shall be cooled a minimum of 16.0 years with a maximum decay heat per assembly of 0.269 kW.

3.

Stated enrichments are nominal values (fabrication tolerances are not included).

NRC FORM 618 U.S. NUCLEAR REGULATORY COMMISSION (8-2000) 10 CFR 71 CERTIFICATE OF COMPLIANCE FOR RADIOACTIVE MATERIAL PACKAGES 1 a. CERTIFICATE NUMBER b. REVISION NUMBER c. DOCKET NUMBER d. PACKAGE IDENTIFICATION NUMBER PAGE PAGES 9235 24 71-9235 USA/9235/B(U)F-96 18 OF 26 5.(b)(1) Contents - Type and Form of Material (Continued)

(iii) Solid, irradiated, and contaminated hardware and solid, particulate debris (dross) or filter media placed in a GTCC waste container, provided the quantity of fissile material does not exceed a Type A quantity, and does not exceed the mass limits of 10 CFR 71.15.

(iv) Irradiated intact and damaged Connecticut Yankee (CY) Class PWR fuel assemblies (including optional stainless steel rods inserted into the CY intact and damaged fuel assembly reactor control cluster assembly (RCCA) guide tubes that do not contain RCCAs), RFAs, or DFCs within the TSC. The maximum initial fuel pin pressure is 475 psig. The fuel assemblies consist of uranium oxide pellets with the specifications, based on design nominal or operating history record values, listed below:

Table 11 - Connecticut Yankee Fuel Assembly Characteristics Assembly Manufacturer/Type PWR 1 PWR 2 PWR 3 CY-MPC CY-MPC 15x15 15x15 RFA 4 DFC 5 Cladding Material SS Zircaloy Zircaloy Zirc/SS Zirc/SS Maximum Number of Assemblies 26 26 24 4 4 Maximum Initial Uranium Content (kg/assembly) 433.7 397.1 390 212 433.7 Maximum Initial Enrichment (wt% 235U) 4.03 3.93 4.61 4.616 4.616 Minimum Initial Enrichment (wt% 235U) 3.0 2.95 2.95 2.95 2.95 Maximum Assembly Weight (lbs) 1,500 1,500 1,500 1,600 1,600 Maximum Burnup (MWD/MTU) 38,000 43,000 43,000 43,000 43,000 Maximum Decay Heat per Assembly (kW) 0.654 0.654 0.654 0.321 0.654 Minimum Cool Time (yrs) 10.0 10.0 10.0 10.0 10.0 Maximum Active Fuel Length (in) 121.8 121.35 120.6 121.8 121.8 Notes:

1. Stainless steel assemblies manufactured by Westinghouse Electric Co., Babcock & Wilcox Fuel Co., Gulf Gen. Atomics, Gulf Nuclear Fuel, & Nuclear Materials & Man. Co.
2. Zircaloy spent fuel assemblies manufactured by Gulf Gen. Atomics, Gulf Nuclear Fuel, & Nuclear Materials & Man. Co., and Babcock & Wilcox Fuel Co.
3. Westinghouse Vantage 5H Zircaloy clad spent fuel assemblies have an initial uranium enrichment > 3.93 % wt. U235.
4. Reconfigured Fuel Assemblies (RFA) must be loaded in one of the 4 oversize fuel loading positions.
5. Damaged Fuel Cans (DFC) must be loaded in one of the 4 oversize fuel loading positions.
6. Enrichment of the fuel within each DFC or RFA is limited to that of the basket configuration in which it is loaded.

NRC FORM 618 U.S. NUCLEAR REGULATORY COMMISSION (8-2000) 10 CFR 71 CERTIFICATE OF COMPLIANCE FOR RADIOACTIVE MATERIAL PACKAGES 1 a. CERTIFICATE NUMBER b. REVISION NUMBER c. DOCKET NUMBER d. PACKAGE IDENTIFICATION NUMBER PAGE PAGES 9235 24 71-9235 USA/9235/B(U)F-96 19 OF 26 5.(b)(1) Contents - Type and Form of Material (Continued)

(v) Irradiated undamaged and damaged Dairyland Power Cooperative LACBWR fuel assemblies based on design nominal or operating history record values listed below.

Fuel assemblies may contain zirconium alloy shroud compaction debris.

Table 12 - LACBWR Fuel Assembly Characteristics Allis Parameter Units Exxon Chalmers Number of Assemblies per Canister1 --- 32 68 Maximum Assembly Weight6 lbs 400 400 Assembly Length In 103 103 Fuel Rod Cladding --- Stainless Steel Stainless Steel Maximum Initial Uranium Mass2 kgU 121.4 111.9 Maximum Initial Enrichment wt% 235U 3.64/3.945 3.713 Minimum Initial Enrichment wt% 235U 3.6 3.6 Maximum Burnup MWd/MTU 22,000 21,000 Maximum Assembly Decay Heat W 63 62 Minimum Cool Time Yr 28 23 Assembly Array Configuration --- 10X10 10X10 Number of Fuel Rods --- 100 96 Maximum Active Fuel Length in 83 83 Rod Pitch in 0.565 0.557 Rod Diameter in 0.396 0.394 Pellet Diameter in 0.350 0.343 Clad Thickness in 0.020 0.0220 Number of Inert Rods4 --- 0 4 Inert Rod OD in N/A 0.3940

1. Maximum 68 assemblies per canister. Allis Chalmers fuel is restricted to Damaged Fuel Cans (DFCs). Therefore, Allis Chalmers fuel is limited to 32 assemblies per canister.
2. DFCs have been evaluated for 2% additional fuel rod mass.
3. Represents planar average enrichment.
4. Inert rods comprised of stainless steel clad tube containing zirconium alloy slug. Inert rods not required for fuel assemblies located in DFC.
5. Two Allis Chalmers fuel types: Type 1 at an enrichment of 3.64 wt% 235U and Type 2 at 3.94 wt% 235U.
6. Not including weight of DFC. DFCs may contain optional inner container subject to maximum weight and fissile material limits in this table.

NRC FORM 618 U.S. NUCLEAR REGULATORY COMMISSION (8-2000) 10 CFR 71 CERTIFICATE OF COMPLIANCE FOR RADIOACTIVE MATERIAL PACKAGES 1 a. CERTIFICATE NUMBER b. REVISION NUMBER c. DOCKET NUMBER d. PACKAGE IDENTIFICATION NUMBER PAGE PAGES 9235 24 71-9235 USA/9235/B(U)F-96 20 OF 26 5.(b)(1) Contents - Type and Form of Material (Continued)

(vi) West Valley Demonstration Project (WVDP) High Level Waste (HLW) stainless steel canisters containing HLW vitrified in borosilicate glass. A WVDP-HLW Overpack may contain HLW canisters, melter-evacuated canisters partially filled with HLW glass or HLW debris. The contents of a package containing the WVDP-HLW are limited to up five HLW canisters, up to two evacuated canisters and one debris canister, in any combination. All canisters are closed with a permanent welded closure, and have a nominal height of 118 inches and an outside diameter of 24 inches, approximately. The heat load shall be 0.300 kW per HLW canister.

The maximum gross weight allowed per canister is 5,500 lbs. The following are the applicable design limits for the HLW:

WVDP-HLW Canisters Maximum HLW Mass (kg) 2,200 Maximum Ci Content HLW 137Cs 42,000 137mBa 40,000 90Sr 23,000 90Y 23,000 60Co 0.2 The quantity of fissile material in the WVDP-HLW Overpack shall not exceed the limits of 10 CFR 71.15.

5.(b)(2) Maximum quantity of material per package (i) For the contents described in Item 5.(b)(1)(i): 26 PWR fuel assemblies with a maximum total weight of 39,650 lbs.

(1) Low burnup fuel assemblies, as described in 5.(b)(1)(i)(1), shall have a maximum decay heat not to exceed 22.1 kW per package.

(2) For high burnup fuel assemblies, as described in 5.(b)(1)(i)(2), the number and the positioning of the fuel assemblies and shielded thermal shunts shall meet the requirements as shown in Configurations A, B or C of NAC International Drawing No. 423-800 and shall have a maximum decay heat not to exceed 24 kW per package. Low burnup fuel assemblies described in Item 5.(b)(1)(i)(1) may be comingled with high burnup fuel assemblies describe in 5.(b)(1)(i)(2), however, the requirements for contents described in Item 5.(b)(1)(i)(2) regarding assembly and thermal shunt numbers and positions apply to packages containing the comingled loadings.

5.(b)(2) Maximum quantity of material per package (continued)

NRC FORM 618 U.S. NUCLEAR REGULATORY COMMISSION (8-2000) 10 CFR 71 CERTIFICATE OF COMPLIANCE FOR RADIOACTIVE MATERIAL PACKAGES 1 a. CERTIFICATE NUMBER b. REVISION NUMBER c. DOCKET NUMBER d. PACKAGE IDENTIFICATION NUMBER PAGE PAGES 9235 24 71-9235 USA/9235/B(U)F-96 21 OF 26 (3) Low burnup assemblies, as described in 5.(b)(1)(i)(3), shall have a maximum decay heat not to exceed 22.1 kW per package. The use of the shield ring assembly, as configured in NAC International Drawing No. 423-927, is required.

(4) For high burnup fuel assemblies, as described in 5.(b)(1)(i)(4), the number and the positioning of the fuel assemblies and shielded thermal shunts shall meet the requirements as shown in Configuration A, B or C of NAC International Drawing No. 423-800 and shall have a maximum decay heat not to exceed 24 kW per package. The use of the shield ring assembly, as configured in NAC International Drawing No. 423-927, is required.

Low burnup fuel assemblies described in Item 5.(b)(1)(i)(3) may be comingled with high burnup fuel assemblies described in 5.(b)(1)(i)(4), however, the requirements for contents described in Item 5.(b)(1)(i)(4) regarding assembly and thermal shunt numbers and positions apply to package containing the comingled loads. The use of the shield ring assembly, as configured in NAC International Drawing No. 423-927, is required.

(ii) For the contents described in Item 5.(b)(1)(ii): Up to 36 intact fuel assemblies to the maximum content weight limit of 30,600 lbs. with a maximum decay heat of 12.5 kW per package. Intact fuel assemblies shall not contain empty fuel rod positions and any missing rods shall be replaced by a solid Zircaloy or stainless steel rod that displaces an equal amount of water as the original fuel rod. Mixing of intact fuel assembly types is authorized.

(iii) For intact fuel rods, damaged fuel rods and fuel debris of the type described in Item 5.(b)(1)(ii): up to 36 RFAs, each with a maximum equivalent of 64 full length Yankee Class fuel rods and within fuel tubes. Mixing of directly loaded intact assemblies and damaged fuel (within RFAs) is authorized. The total weight of damaged fuel within RFAs or mixed damaged RFA and intact assemblies shall not exceed 30,600 lbs. with a maximum decay heat of 12.5 kW per package.

NRC FORM 618 U.S. NUCLEAR REGULATORY COMMISSION (8-2000) 10 CFR 71 CERTIFICATE OF COMPLIANCE FOR RADIOACTIVE MATERIAL PACKAGES 1 a. CERTIFICATE NUMBER b. REVISION NUMBER c. DOCKET NUMBER d. PACKAGE IDENTIFICATION NUMBER PAGE PAGES 9235 24 71-9235 USA/9235/B(U)F-96 22 OF 26 5.(b)(2) Maximum quantity of material per package (continued)

(iv) For the contents described in Item 5.(b)(1)(iii): for Connecticut Yankee GTCC waste up to 24 containers of GTCC waste. The total cobalt-60 activity shall not exceed 196,000 curies. The total weight of the waste containers shall not exceed 18,743 lbs. with a maximum decay heat of 5.0 kW. For all others, up to 24 containers of GTCC waste. The total cobalt-60 activity shall not exceed 125,000 curies. The total weight of the waste and containers shall not exceed 12,340 lbs. with a maximum decay heat of 2.9 kW.

(v) For the contents described in Item 5.(b)(1)(iv): up to 26 Connecticut Yankee fuel assemblies, RFAs or damaged fuel in CY-MPC DFCs for stainless steel clad assemblies enriched up to 4.03 wt. percent and Zirc-clad assemblies enriched up to 3.93 wt. percent. Westinghouse Vantage 5H fuel and other Zirc-clad assemblies enriched up to 4.61 wt. percent must be installed in the 24-assembly basket, which may also hold other Connecticut Yankee fuel types. The construction of the two basket configurations is identical except that two fuel loading positions of the 26 assembly basket are blocked to form the 24 assembly basket. The total weight of damaged fuel within RFAs or mixed damaged RFAs and intact assemblies shall not exceed 35,100 lbs. with a maximum decay heat of 0.654 kW per assembly for a canister of 26 assemblies. A maximum decay heat of 0.321 kW per assembly for Connecticut Yankee RFAs and of 0.654 kW per canister for the Connecticut Yankee DFCs is authorized.

(vi) For the contents described in 5.(b)(1)(v): Up to 68 LACBWR assemblies, including up to 32 damaged fuel assemblies contained in DFCs, may be transported in the MPC-LACBWR TSCs.

NRC FORM 618 U.S. NUCLEAR REGULATORY COMMISSION (8-2000) 10 CFR 71 CERTIFICATE OF COMPLIANCE FOR RADIOACTIVE MATERIAL PACKAGES 1 a. CERTIFICATE NUMBER b. REVISION NUMBER c. DOCKET NUMBER d. PACKAGE IDENTIFICATION NUMBER PAGE PAGES 9235 24 71-9235 USA/9235/B(U)F-96 23 OF 26 5.(b)(2)(vi) Maximum quantity of material per package (Continued)

Total weight of contents within the MPC-LACBWR TSC is 28,870 lbs., including the weight of 32 DFCs. The maximum decay heat is 4.5 kW per package. LACBWR undamaged fuel assemblies and LACBWR DFCs must be loaded in accordance with the following loading pattern:

Slot A: Undamaged Exxon fuel maximum planar average enrichment 3.71 wt% 235U.

Slot B: Undamaged or damaged Exxon fuel maximum planar average enrichment 3.71 wt% 235U, up to four slots maximum, B and C combined. Damaged Allis Chalmers fuel maximum enrichment 3.64 wt% 235U.

Slot C: Undamaged or damaged Exxon fuel maximum planar average enrichment 3.71 wt% 235U, up to four slots maximum, B and C combined. Damaged Allis Chalmers fuel maximum enrichment 3.94 wt% 235U.

LACBWR DFCs are allowed to contain an additional 2% fissile material to account for loose pellets, not necessarily associated with the as-built fuel assembly.

NOTE: The above sketch is not to scale. It is a depiction of the loading pattern.

NRC FORM 618 U.S. NUCLEAR REGULATORY COMMISSION (8-2000) 10 CFR 71 CERTIFICATE OF COMPLIANCE FOR RADIOACTIVE MATERIAL PACKAGES 1 a. CERTIFICATE NUMBER b. REVISION NUMBER c. DOCKET NUMBER d. PACKAGE IDENTIFICATION NUMBER PAGE PAGES 9235 24 71-9235 USA/9235/B(U)F-96 24 OF 26 5.(b)(2) Maximum quantity of material per package (Continued)

(vii) For the contents Described in 5.(b)(1)(vi): Up to five (5) HLW canisters may be transported in the WVDP-HLW Overpack, including melter-evacuated canisters partially filled with HLW glass or canisters with HLW debris. A single WVDP-HLW Overpack is limited to a load of up to five (5) HLW canisters, two (2) melter-evacuated canisters, and one (1) HLW debris canister, in any combination. For a WVDP-HLW Overpack loaded with less than 5 canisters, a transport insert shall be loaded in all empty basket cell locations.

The NAC-STC content weight shall be 45,800 lbs. in the WVDP-HLW Overpack configuration. The WVDP-HLW Overpack heat load shall be 1.5 kW. Top and bottom spacers are used for axial positioning of the WVDP-HLW Overpack within the NAC-STC cavity.

5.(c) Criticality Safety Index (CSI):

(1) CSI=0.0 for contents described in 5.(b)(1)(i), 5.(b)(1)(ii), 5.(b)(1)(iii), 5.(b)(1)(iv) (i.e., Yankee Class and CY Fuel and GTCC Waste), and 5.(b)(1)(vi).

(2) CSI=100 for contents described in 5.(b)(1)(v) (i.e., LACBWR fuel).

6. Known or suspected damaged fuel assemblies or rods (fuel with cladding defects greater than pin holes and hairline cracks) are not authorized, except as described in Items 5.(b)(2)(iii), 5.(b)(2)(v),

and 5.b(2)(vi).

7. For contents placed in a GTCC waste container and described in Item 5.(b)(1)(iii), and which contain organic substances which could radiolytically generate combustible gases, a determination must be made by tests and measurements or by analysis that the following criteria are met over a period of time that is twice the expected shipment time:

The hydrogen generated must be limited to a molar quantity that would be no more than 4% by volume (or equivalent limits for other inflammable gases) of the TSC gas void if present at STP (i.e., no more than 0.063 g-moles/ft3 at 14.7 psia and 70°F). For determinations performed by analysis, the amount of hydrogen generated since the time that the TSC was sealed shall be considered.

8. For damaged fuel rods and fuel debris of the quantity described in Item 5.(b)(2)(iii) and 5.(b)(2)(v):

if the total damaged fuel plutonium content of a package is greater than 20 Ci, all damaged fuel shall be enclosed in a TSC which has been leak tested at the time of closure. For the Yankee Class TSC the leak test shall have a test sensitivity of at least 4.0 x 10-8 cm3/sec (helium) and shown to have a leak rate no greater than 8.0 x 10-8 cm3/sec (helium). For the Connecticut Class TSC the leak test shall have a test sensitivity of at least 1.0 x 10-7 cm3/sec (helium) and shown to have a leak rate no greater than 2.0 x 10-7 cm3/sec (helium).

NRC FORM 618 U.S. NUCLEAR REGULATORY COMMISSION (8-2000) 10 CFR 71 CERTIFICATE OF COMPLIANCE FOR RADIOACTIVE MATERIAL PACKAGES 1 a. CERTIFICATE NUMBER b. REVISION NUMBER c. DOCKET NUMBER d. PACKAGE IDENTIFICATION NUMBER PAGE PAGES 9235 24 71-9235 USA/9235/B(U)F-96 25 OF 26

9. In addition to the requirements of Subpart G of 10 CFR Part 71:

(a) The package must be prepared for shipment and operated in accordance with the Operating Procedures in Chapter 7 of the application, as supplemented.

(b) Each packaging must be acceptance tested and maintained in accordance with the Acceptance Tests and Maintenance Program in Chapter 8 of the application, as supplemented, except that the thermal testing of the package (including the thermal acceptance test and periodic thermal tests) must be performed as described in the NAC-STC Safety Analysis Report.

(c) For packaging Serial Numbers STC-1 and STC-2, only one of these two packagings must be subjected to the thermal acceptance test as described in Section 8.1.6 of the NAC-STC Safety Analysis Report. Only one thermal acceptance test needs to be performed. A separate acceptance test does not need to be performed for each of the contents described in 5.(b)(1), above.

(d) To confirm the NAC-STC heat dissipation design capability, only one package must be subjected to the thermal acceptance test described in Section 8.1.6 of the NAC-STC Safety Analysis Report. Separate thermal acceptance tests do not need to be performed for each of the contents described in 5.(b)(1), above.

10. Prior to transport by rail, the Association of American Railroads must have evaluated and approved the railcar and the system used to support and secure the package during transport.
11. Prior to marine or barge transport, the National Cargo Bureau, Inc., must have evaluated and approved the system used to support and secure the package to the barge or vessel, and must have certified that package stowage is in accordance with the regulations of the Commandant, United States Coast Guard.
12. For casks fabricated and accepted using the gamma shielding integrity acceptance criteria described in Chapter 8, Section 8.1.5.1.1 of the NAC-STC Safety Analysis Report for the upper 10.18 inches of the cask upper lead region, which only applies for directly loaded fuel, the cask user shall use the shield plate for the basket top weldment as detailed in license drawing 423-872.
13. Transport by air is not authorized.
14. The package authorized by this certificate is hereby approved for use under the general license provisions of 10 CFR 71.17.
15. Expiration date: May 31, 2024.

NRC FORM 618 U.S. NUCLEAR REGULATORY COMMISSION (8-2000) 10 CFR 71 CERTIFICATE OF COMPLIANCE FOR RADIOACTIVE MATERIAL PACKAGES 1 a. CERTIFICATE NUMBER b. REVISION NUMBER c. DOCKET NUMBER d. PACKAGE IDENTIFICATION NUMBER PAGE PAGES 9235 24 71-9235 USA/9235/B(U)F-96 26 OF 26 REFERENCES NAC International application dated: July 31, 2019, and TBD.

FOR THE U.S. NUCLEAR REGULATORY COMMISSION

______/RA/____________________

TBD, Acting Chief Spent Fuel Licensing Branch Division of Spent Fuel Management Office of Nuclear Material Safety and Safeguards Date: TBD to ED20230032 Page 1 of 2 Enclosure 5 List of Changes NAC-STC SAR, Revision 23A (Docket No. 71-9235)

NAC International March 2023 to ED20230032 Page 2 of 2 List of Changes, NAC-STC SAR, Revision 23A Chapter 1 Page 1-iv, updated drawing revisions where indicated.

Chapter 2 Page 2.6.7.4-6, modified text near the middle of the page near the end of Section 2.6.7.4.1.1 where indicated.

Chapter 3 No changes.

Chapter 4 No changes.

Chapter 5 No changes.

Chapter 6 No changes.

Chapter 7

  • Page 7.4-10, modified text in Table 7.4-1 where indicated.

Chapter 8 No changes.

Chapter 9 No changes.

to ED20230032 Page 1 of 1 Enclosure 6 SAR Changed Pages and LOEP NAC-STC SAR, Revision 23A (Docket No. 71-9235)

NAC International March 2023

March 2023 Revision 23A NACSTC NAC Storage Transport Cask SAFETY ANALYSIS REPORT Non-Proprietary Version Volume 1 of 2 Docket No. 719235 Atlanta Corporate Headquarters: 3950 East Jones Bridge Road, Norcross, Georgia 30092 USA Phone 7704471144, Fax 7704471797, www.nacintl.com

NAC-STC SAR March 2023 Docket No. 71-9235 Revision 23A List of Effective Pages Chapter 1 Pages 2.1.1-3 thru 2.1.1-5 ............. Revision 19 Pages 2.1.2-1 thru 2.1.2-5 ............. Revision 18 Page 1-i thru 1-iii ........................Revision 22A Pages 2.1.3-1 thru 2.1.3-15 ........... Revision 18 Page 1-iv .....................................Revision 23A Pages 2.2-1 thru 2.2-3 ................... Revision 18 Pages 1-v thru 1-viii....................Revision 22A Page 2.2-4 ..................................... Revision 19 Pages 1-1 ....................................... Revision 20 Pages 2.2-5 thru 2.2-8 ................... Revision 18 Pages 1-2 thru 1-11 ....................... Revision 18 Pages 2.3.1-1 thru 2.3.1-2 ............. Revision 18 Page 1-12 ...................................... Revision 19 Page 2.3.2-1 .................................. Revision 18 Page 1.1-1 thru 1.1-3..................... Revision 18 Pages 2.3.2-2 thru 2.3.2-4 ............. Revision 19 Page 1.1-4 ..................................... Revision 19 Page 2.3.2-5 .................................. Revision 18 Page 1.1-5 thru 1.1-7..................... Revision 18 Pages 2.3.3-1 thru 2.3.3-2 ............. Revision 18 Page 1.1-8 ...................................Revision 22A Pages 2.3.4-1 thru 2.3.4-3 ............. Revision 18 Page 1.2-1 ..................................... Revision 19 Pages 2.3.5-1 thru 2.3.5-2 ............. Revision 18 Pages 1.2-2 thru 1.2-8 ................... Revision 18 Pages 2.3.6-1 thru 2.3.6-5 ............. Revision 18 Page 1.2-9 ..................................... Revision 19 Page 2.3.7-1 .................................. Revision 18 Pages 1.2-10 thru 1.2-38 ............... Revision 18 Page 2.3.8-1 .................................. Revision 18 Page 1.2-39 ................................... Revision 20 Page 2.4-1 ..................................... Revision 18 Pages 1.2-40 thru 1.2-42 ............... Revision 18 Page 2.4.1-1 .................................. Revision 18 Pages 1.2-43 thru 1.2-44 ............... Revision 19 Page 2.4.2-1 .................................. Revision 18 Page 1.2-45 ................................... Revision 20 Page 2.4.3-1 .................................. Revision 18 Pages 1.2-46 thru 1.2-49 ............... Revision 18 Pages 2.4.4-1 thru 2.4.4-6 ............. Revision 18 Page 1.3-1 ..................................... Revision 18 Pages 2.4.4-7 thru 2.4.4-8 ............. Revision 19 Pages 1.4-1 thru 1.4-24 ................. Revision 18 Page 2.4.4-9 .................................. Revision 18 Page 2.4.4-10 ................................ Revision 19 Chapter 2 Page 2.4.5-1 .................................. Revision 18 Page 2.4.6-1 .................................. Revision 18 Pages 2-i thru 2-ii.......................... Revision 18 Pages 2.5.1-1 thru 2.5.1-38 ........... Revision 18 Page 2-iii ....................................... Revision 19 Pages 2.5.2-1 thru 2.5.2-23 ........... Revision 18 Pages 2-iv thru 2-xiv ..................... Revision 18 Page 2.5.2-24 ................................ Revision 20 Page 2-xv ....................................Revision 22A Pages 2.5.2-25 thru 2.5.2-29 ......... Revision 18 Page 2-xvi ..................................... Revision 18 Pages 2.6-1 thru 2.6-2 ................... Revision 18 Page 2-xvii .................................... Revision 19 Pages 2.6.1-1 thru 2.6.1-7 ............. Revision 18 Pages 2-xviii thru 2-xxxii ............. Revision 18 Pages 2.6.2-1 thru 2.6.2-8 ............. Revision 18 Page 2-xxxiii ...............................Revision 22A Page 2.6.3-1 .................................. Revision 18 Page 2-xxxiv thru 2-lxviii ............. Revision 18 Page 2.6.4-1 .................................. Revision 18 Page 2-1 ........................................ Revision 18 Pages 2.6.5-1 thru 2.6.5-2 ............. Revision 18 Pages 2.1.1-1 thru 2.1.1-2 ............. Revision 18 Page 2.6.6-1 .................................. Revision 18 1 of 8

NAC-STC SAR March 2023 Docket No. 71-9235 Revision 23A List of Effective Pages (continued)

Page 2.6.7-1 ................................... Revision 18 Pages 2.6.12.3-1 thru Pages 2.6.7.1-1 thru 2.6.7.1-17...... Revision 18 2.6.12.3-7 ................................. Revision 18 Pages 2.6.7.2-1 thru 2.6.7.2-19...... Revision 18 Pages 2.6.12.4-1 thru Pages 2.6.7.3-1 thru 2.6.7.3-11...... Revision 18 2.6.12.4-3 ................................. Revision 18 Pages 2.6.7.4-1 thru 2.6.7.4-5........ Revision 18 Pages 2.6.12.5-1 thru Pages 2.6.7.4-6 ........................... Revision 23A 2.6.12.5-3 ................................. Revision 18 Pages 2.6.7.4-7 thru 2.6.7.4-59...... Revision 18 Page 2.6.12.6-1 .............................. Revision 19 Pages 2.6.7.5-1 thru 2.6.7.5-4........ Revision 18 Page 2.6.12.6-2 .............................. Revision 18 Pages 2.6.7.5-5 thru 2.6.7.5-8........ Revision 19 Pages 2.6.12.7-1 thru Pages 2.6.7.5-7 thru 2.6.7.5-13...... Revision 18 2.6.12.7-22 ............................... Revision 18 Pages 2.6.7.6-1 thru 2.6.7.6-13...... Revision 18 Pages 2.6.12.8-1 thru Pages 2.6.7.7-1 thru 2.6.7.7-5........ Revision 18 2.6.12.8-2 ................................. Revision 18 Page 2.6.7.8-1 ................................ Revision 19 Pages 2.6.12.9-1 thru Pages 2.6.7.8-2 thru 2.6.7.8-3........ Revision 20 2.6.12.9-11 ............................... Revision 18 Page 2.6.7.8-4 ................................ Revision 19 Page 2.6.12.10-1 ............................ Revision 18 Page 2.6.8-1 ................................... Revision 18 Page 2.6.12.11-1 ............................ Revision 18 Page 2.6.9-1 ................................... Revision 18 Page 2.6.12.12-1 ............................ Revision 18 Page 2.6.10-1 ................................. Revision 18 Page 2.6.12.13-1 ............................ Revision 19 Pages 2.6.10.1-1 thru Pages 2.6.12.13-2 thru 2.6.10.1-2 ................................. Revision 18 2.6.12.13-4 ............................... Revision 18 Pages 2.6.10.2-1 thru Pages 2.6.13-1 thru 2.6.10.2-4 ................................. Revision 18 2.6.13-3 .................................... Revision 18 Pages 2.6.10.3-1 thru Pages 2.6.13.1-1 thru 2.6.10.3-7 ................................. Revision 18 2.6.13.1-2 ................................. Revision 18 Pages 2.6.11-1 thru Pages 2.6.13.2-1 thru 2.6.11-2 .................................... Revision 19 2.6.13.2-7 ................................. Revision 18 Pages 2.6.11.1-1 thru Pages 2.6.13.3-1 thru 2.6.11.1-4 ................................. Revision 19 2.6.13.3-4 ................................. Revision 18 Pages 2.6.11.2-1 thru Pages 2.6.13.4-1 thru 2.6.11.2-11 ............................... Revision 19 2.6.13.4-5 ................................. Revision 18 Page 2.6.11.3-1 .............................. Revision 18 Pages 2.6.13.5-1 thru Pages 2.6.12-1 thru 2.6.13.5-2 ................................. Revision 18 2.6.12-5 .................................... Revision 18 Pages 2.6.13.6-1 thru Page 2.6.12.1-1 .............................. Revision 18 2.6.13.6-2 ................................. Revision 18 Pages 2.6.12.2-1 thru Pages 2.6.13.7-1 thru 2.6.12.2-5 ................................. Revision 18 2.6.13.7-2 ................................. Revision 18 Page 2.6.13.8-1 .............................. Revision 18 2 of 8

NAC-STC SAR March 2023 Docket No. 71-9235 Revision 23A List of Effective Pages (continued)

Page 2.6.13.9-1 ............................. Revision 18 Pages 2.6.15.4-1 thru Page 2.6.13.10-1 ........................... Revision 18 2.6.15.4-4 ................................ Revision 18 Pages 2.6.13.11-1 thru Page 2.6.15.5-1 ............................. Revision 18 2.6.13.11-3 .............................. Revision 18 Pages 2.6.15.6-1 thru Pages 2.6.13.12-1 thru 2.6.15.6-3 ................................ Revision 18 2.6.13.12-2 .............................. Revision 18 Page 2.6.15.7-1 ............................. Revision 18 Pages 2.6.14-1 thru Page 2.6.15.8-1 ............................. Revision 18 2.6.14-8 ................................... Revision 18 Page 2.6.15.9-1 ............................. Revision 18 Pages 2.6.14.1-1 thru Page 2.6.15.10-1 ........................... Revision 18 2.6.14.1-2 ................................ Revision 18 Pages 2.6.15.11-1 thru Pages 2.6.14.2-1 thru 2.6.15.11-3 .............................. Revision 18 2.6.14.2-16 .............................. Revision 18 Pages 2.6.15.12-1 thru Pages 2.6.14.3-1 thru 2.6.15.12-2 .............................. Revision 18 2.6.14.3-3 ................................ Revision 18 Pages 2.6.16-1 thru Pages 2.6.14.4-1 thru 2.6.16-6 ................................... Revision 18 2.6.14.4-4 ................................ Revision 18 Pages 2.6.16.1-1 thru Pages 2.6.14.5-1 thru 2.6.16.1-2 ................................ Revision 18 2.6.14.5-3 ................................ Revision 18 Pages 2.6.16.2-1 thru Page 2.6.14.6-1 ............................. Revision 18 2.6.16.2-11 .............................. Revision 18 Pages 2.6.14.7-1 thru Pages 2.6.16.3-1 thru 2.6.14.7-14 .............................. Revision 18 2.6.16.3-3 ................................ Revision 18 Pages 2.6.14.8-1 thru Pages 2.6.16.4-1 thru 2.6.14.8-6 ................................ Revision 18 2.6.16.4-3 ................................ Revision 18 Page 2.6.14.9-1 ............................. Revision 18 Pages 2.6.16.5-1 thru Page 2.6.14.10-1 ........................... Revision 18 2.6.15.5-3 ................................ Revision 18 Pages 2.6.14.11-1 thru Pages 2.6.16.6-1 thru 2.6.14.11-5 .............................. Revision 18 2.6.16.6-3 ................................ Revision 18 Pages 2.6.14.12-1 thru Pages 2.6.16.7-1 thru 2.6.14.12-5 .............................. Revision 18 2.6.16.7-12 .............................. Revision 18 Page 2.6.15-1 ................................ Revision 18 Pages 2.6.16.8-1 thru Pages 2.6.15.1-1 thru 2.6.16.8-7 ................................ Revision 18 2.6.15.1-2 ................................ Revision 18 Page 2.6.16.9-1 ............................. Revision 18 Pages 2.6.15.2-1 thru Page 2.6.16.10-1 ........................... Revision 18 2.6.15.2-7 ................................ Revision 18 Pages 2.6.16.11-1 thru Pages 2.6.15.3-1 thru 2.6.16.11-4 .............................. Revision 18 2.6.15.3-4 ................................ Revision 18 Pages 2.6.16.12-1 thru 2.6.16.12-2 .............................. Revision 18 3 of 8

NAC-STC SAR March 2023 Docket No. 71-9235 Revision 23A List of Effective Pages (continued)

Pages 2.6.16.13-1 thru Page 2.7.2.6-1 ................................ Revision 18 2.6.16.13-2 ............................... Revision 18 Page 2.7.3.1-1 ................................ Revision 18 Page 2.6.16.14-1 ............................ Revision 18 Pages 2.7.3.2-1 thru 2.7.3.2-5 ........ Revision 18 Pages 2.6.17-1 thru Pages 2.7.3.3-1 thru 2.7.3.3-3 ........ Revision 18 2.6.17-13 .................................. Revision 18 Pages 2.7.3.4-1 thru 2.7.3.4-2 ........ Revision 18 Pages 2.6.18-1 thru Page 2.7.3.5-1 ................................ Revision 18 2.6.18-6 .................................... Revision 18 Page 2.7.3.6-1 ................................ Revision 18 Pages 2.6.19-1 thru Page 2.7.4-1 ................................... Revision 18 2.6.19-23 .................................. Revision 18 Page 2.7.5-1 ................................... Revision 18 Pages 2.6.20-1 thru Page 2.7.6-1 ................................... Revision 18 2.6.20-20 .................................. Revision 18 Pages 2.7.7-1 thru 2.7.7-4 .............. Revision 18 Pages 2.6.21-1 thru Pages 2.7.8-1 thru 2.7.8-4 .............. Revision 18 2.6.21.-2 ................................... Revision 18 Pages 2.7.8.1-1 thru 2.7.8.1-43 ...... Revision 18 Pages 2.7-1 thru 2.7-2 .................... Revision 18 Pages 2.7.8.2-1 thru 2.7.8.2-2 ........ Revision 19 Page 2.7.1-1 thru 2.7.1-2 ............... Revision 18 Pages 2.7.8.3-1 thru 2.7.8.3-6 ........ Revision 18 Pages 2.7.1.1-1 thru Pages 2.7.8.3-7 thru 2.7.8.3-8 ........ Revision 19 2.7.1.1-15 ................................. Revision 18 Page 2.7.8.3-9 ................................ Revision 18 Pages 2.7.1.2-1 thru Pages 2.7.8.3-10 thru 2.7.8.3-12 .... Revision 19 2.7.1.2-15 ................................. Revision 18 Page 2.7.8.3-13 .............................. Revision 18 Pages 2.7.1.3-1 thru Pages 2.7.8.4-1 thru 2.7.8.4-10 ...... Revision 18 2.7.1.3-9 ................................... Revision 18 Page 2.7.8.5-1 ................................ Revision 19 Pages 2.7.1.4-1 thru Pages 2.7.9-1 thru 2.7.9-40 ............ Revision 18 2.7.1.4-11. ................................ Revision 18 Pages 2.7.10-1 thru 2.7.10-12 ........ Revision 18 Pages 2.7.1.5-1 thru Pages 2.7.11-1 thru 2.7.11-16 ........ Revision 18 2.7.1.5-3 ................................... Revision 18 Pages 2.7.12-1 thru 2.7.12-10 ........ Revision 18 Pages 2.7.1.6-1 thru Pages 2.7.13-1 thru 2.7.13-4 .......... Revision 18 2.7.1.6-16 ................................. Revision 18 Pages 2.7.13.1-1 thru Page 2.7.2-1 ................................... Revision 18 2.7.13.1-18 ............................... Revision 18 Pages 2.7.2.1-1 thru Pages 2.7.13.2-1 thru 2.7.2.1-5 ................................... Revision 18 2.7.13.2-2 ................................. Revision 18 Pages 2.7.2.2-1 thru Pages 2.7.13.3-1 thru 2.7.2.2-9 ................................... Revision 18 2.7.13.3-4 ................................. Revision 18 Pages 2.7.2.3-1 thru Pages 2.7.13.4-1 thru 2.7.2.3-6 ................................... Revision 18 2.7.13.4-8 ................................. Revision 18 Pages 2.7.2.4-1 thru Pages 2.7.13.5-1 thru 2.7.2.4-7 ................................... Revision 18 2.7.13.5-2 ................................. Revision 18 Page 2.7.2.5-1 ................................ Revision 18 4 of 8

NAC-STC SAR March 2023 Docket No. 71-9235 Revision 23A List of Effective Pages (continued)

Pages 2.7.14-1 thru Page 2.11.6.12-1 thru 2.7.14-13 ................................. Revision 18 2.11.6.12-62 ............................ Revision 18 Pages 2.7.15-1 thru Pages 2.11.6.13-1 thru 2.7.15-16 ................................. Revision 18 2.11.6.13-35 ............................ Revision 18 Page 2.8-1 ..................................... Revision 18 Pages 2.11.6.14-1 thru Pages 2.9-1 thru 2.9-11 ................. Revision 18 2.11.6.14-10 ............................ Revision 18 Pages 2.10.1-1 thru 2.10.1-4 ......... Revision 18 Page 2.11.6.15-1 ........................... Revision 18 Pages 2.10.2-1 thru 2.10.2-93 ....... Revision 18 Pages 2.11.7-1 thru 2.11.7-8 ......... Revision 18 Pages 2.10.3-1 thru 2.10.3-7 ......... Revision 18 Pages 2.11.7.8-1 thru Pages 2.10.4-1 thru 2.11.7.8-34 .............................. Revision 18 2.10.4-288 ............................... Revision 18 Pages 2.11.7.9-1 thru Pages 2.10.5-1 thru 2.10.5-22 ....... Revision 18 2.11.7.9-14 .............................. Revision 18 Pages 2.10.6-1 thru 2.10.6.-36 ...... Revision 18 Pages 2.11.7.10-1 thru 2.11.7.10-5 .............................. Revision 18 13 drawings in Sections Page 2.11.8-1 ................................ Revision 18 2.10.6.6 and 2.10.6.7 Pages 2.11.9-1 thru 2.11.9-10 ....... Revision 18 Page 2.12.1-1 ................................ Revision 18 Pages 2.10.6-37 thru Pages 2.12.2-1 thru 2.12.2-2 ......... Revision 18 2.10.6-88 ................................. Revision 18 Page 2.12.3-1 ................................ Revision 18 Pages 2.10.7-1 thru 2.10.7-26 ....... Revision 18 Page 2.12.4-1 ................................ Revision 18 Pages 2.10.8-1 thru 2.10.8-24 ....... Revision 18 Page 2.12.5-1 ................................ Revision 18 Pages 2.10.9-1 thru 2.10.9-11 ....... Revision 18 Page 2.12.6-1 thru 2.12.6-29......... Revision 18 Pages 2.10.10-1 thru Page 2.13.1-1 ................................ Revision 18 2.10.10-11 ............................... Revision 18 Page 2.13.2-1 ................................ Revision 18 Pages 2.10.11-1 thru Page 2.13.2-2 ................................ Revision 19 2.10.11-8 ................................. Revision 18 Page 2.13.3-1 ................................ Revision 18 Pages 2.10.12-1 thru Page 2.13.4-1 ................................ Revision 18 2.10.12-31 ............................... Revision 18 Page 2.13.5-1 ................................ Revision 18 Pages 2.13.6-1 thru 2.13.6-45 ....... Revision 18 4 drawings in Section 2.10.12 Pages 2.13.6-46 thru 2.13.6-60 .. Revision 22A Pages 2.11.1-1 thru 2.11.1-2 ......... Revision 18 Chapter 3 Pages 2.11.2-1 thru 2.11.2-2 ......... Revision 18 Page 2.11.3-1 ................................ Revision 18 Page 3-i ......................................... Revision 19 Page 2.11.4-1 ................................ Revision 18 Page 3-ii ........................................ Revision 18 Page 2.11.5-1 ................................ Revision 18 Page 3-iii .................................... Revision 22A Pages 2.11.6-1 thru 2.11.6-6 ......... Revision 18 Pages 3-iv thru 3-v ........................ Revision 19 5 of 8

NAC-STC SAR March 2023 Docket No. 71-9235 Revision 23A List of Effective Pages (continued)

Page 3-vi ..................................... Revision 22A Pages 3.8.4-4 thru 3.8.4-5 .............. Revision 19 Page 3-vii ....................................... Revision 19 Pages 3.8.4-6 thru 3.8.4-15 ......... Revision 22A Page 3-viii................................... Revision 22A Pages 3.8.5-1 thru 3.8.5-2 .............. Revision 19 Page 3.1-1 ...................................... Revision 18 Page 3.8.6-1 ................................... Revision 18 Page 3.1-2 ................................... Revision 22A Pages 3.1-3 thru 3.1-12 .................. Revision 18 Chapter 4 Pages 3.2-1 thru 3.2-14 .................. Revision 18 Page 3.3-1 ...................................... Revision 18 Page 4-i .......................................... Revision 19 Page 3.3-2 ...................................... Revision 19 Pages 4-ii thru 4-iii ........................ Revision 18 Pages 3.3-3 thru 3.3-6 .................... Revision 18 Pages 4.1-1 thru 4.1-10 .................. Revision 18 Pages 3.4-1 thru 3.4-6 .................... Revision 18 Pages 4.2-1 thru 4.2-18 .................. Revision 18 Pages 3.4-7 thru 3.4-16 .................. Revision 19 Pages 4.3-1 thru 4.3-4 .................... Revision 18 Pages 3.4-17 thru 3.4-30 ................ Revision 18 Page 4.4-1 ...................................... Revision 18 Page 3.4-31 .................................... Revision 20 Pages 4.5-1 thru 4.5-13 .................. Revision 18 Pages 3.4-32 thru 3.4-44 ................ Revision 18 Page 4.5-14 .................................... Revision 19 Pages 3.4-45 thru 3.4-86 ................ Revision 19 Pages 4.5-15 thru 4.5-19 ................ Revision 18 Pages 3.5-1 thru 3.5-16 .................. Revision 18 Pages 4.5-20 thru 4.5-31 ................ Revision 19 Page 3.6-1 ...................................... Revision 18 Page 4.5-32 .................................... Revision 20 Pages 3.6.1-1 thru 3.6.1-4 .............. Revision 18 Pages 4.5-33 thru 4.5-38 ................ Revision 19 Pages 3.6.2-1 thru 3.6.2-3 .............. Revision 18 Pages 4.6-1 thru 4.6-2 .................... Revision 18 Pages 3.6.3-1 thru 3.6.3-3 .............. Revision 18 Pages 4.7-1 thru 4.7-3 .................... Revision 18 Pages 3.6.4-1 thru 3.6.4-24 ............ Revision 18 Pages 3.6.5-1 thru 3.6.5-3 .............. Revision 18 Chapter 5 Page 3.7-1 ...................................... Revision 18 Pages 3.7.1-1 thru 3.7.1-3 .............. Revision 18 Pages 5-i thru 5-ii .......................... Revision 18 Pages 3.7.2-1 thru 3.7.2-2 .............. Revision 18 Page 5-iii ........................................ Revision 19 Pages 3.7.3-1 thru 3.7.3-2 .............. Revision 18 Pages 5-iv thru 5-ix ....................... Revision 18 Pages 3.7.4-1 thru 3.7.4-9 .............. Revision 18 Pages 5-x thru 5-xii ....................... Revision 19 Pages 3.7.5-1 thru 3.7.5-2 .............. Revision 18 Pages 5-xiii thru 5-xvii .................. Revision 18 Page 3.8-1 ...................................... Revision 18 Pages 5-xviii thru 5-xx .................. Revision 19 Pages 3.8.1-1 thru 3.8.1-4 .............. Revision 18 Page 5-1 ......................................... Revision 18 Pages 3.8.2-1 thru 3.8.2-3 .............. Revision 18 Page 5-2 ......................................... Revision 19 Page 3.8.3-1 ................................... Revision 18 Pages 5-3 thru 5-4 .......................... Revision 18 Page 3.8.3-2 ................................... Revision 19 Pages 5.1-1 thru 5.1-30 .................. Revision 18 Page 3.8.3-3 ................................... Revision 18 Pages 5.2-1 thru 5.2-40 .................. Revision 18 Page 3.8.4-1 ................................ Revision 22A Pages 5.3-1 thru 5.3-33 .................. Revision 18 Pages 3.8.4-2 thru 3.8.4-3 .............. Revision 18 Pages 5.4-1 thru 5.4-3 .................... Revision 18 6 of 8

NAC-STC SAR March 2023 Docket No. 71-9235 Revision 23A List of Effective Pages (continued)

Pages 5.4-4 thru 5.4-7 ................... Revision 19 Pages 5.11-1 thru 5.11-3 ............... Revision 19 Pages 5.4-8 thru 5.4-41 ................. Revision 18 Pages 5.5-1 thru 5.5-61 ................. Revision 18 Chapter 6 Page 5.6-1 ..................................... Revision 18 Pages 5.6.1-1 thru 5.6.1-9 ............. Revision 18 Pages 6-i thru 6-ix ......................... Revision 18 Pages 5.6.2-1 thru 5.6.2-20 ........... Revision 18 Pages 6.1-1 thru 6.1-6 ................... Revision 18 Pages 5.6.3-1 thru 5.6.3-13 ........... Revision 18 Pages 6.2-1 thru 6.2-11 ................. Revision 18 Pages 5.6.4-1 thru 5.6.4-34 ........... Revision 18 Page 6.3-1 ..................................... Revision 20 Page 5.6.5-1 .................................. Revision 18 Pages 6.3-2 thru 6.3-10 ................. Revision 18 Pages 5.6.6-1 thru 5.6.6-57 ........... Revision 18 Pages 6.4-1 thru 6.4-2 ................... Revision 18 Page 5.7-1 ..................................... Revision 18 Page 6.4.1-1 .................................. Revision 18 Pages 5.7.1-1 thru 5.7.1-5 ............. Revision 18 Pages 6.4.2-1 thru 6.4.2-11 ........... Revision 18 Pages 5.7.2-1 thru 5.7.2-5 ............. Revision 18 Pages 6.4.3-1 thru 6.4.3-29 ........... Revision 18 Pages 5.7.3-1 thru 5.7.3-10 ........... Revision 18 Pages 6.4.4-1 thru 6.4.4-30 ........... Revision 18 Pages 5.7.4-1 thru 5.7.4-14 ........... Revision 18 Pages 6.5-1 thru 6.5-2 ................... Revision 18 Page 5.7.5-1 .................................. Revision 18 Pages 6.5.1-1 thru 6.5.1-21 ........... Revision 18 Pages 5.7.6-1 thru 5.7.6-22 ........... Revision 18 Pages 6.5.2-1 thru 6.5.2-20 ........... Revision 18 Page 5.8-1 ..................................... Revision 19 Pages 6.6-1 thru 6.6-2 ................... Revision 18 Pages 5.8.1-1 thru 5.8.1-2 ............. Revision 19 Pages 6.7-1 thru 6.7-333 ............... Revision 18 Page 5.8.1-3 .................................. Revision 18 Page 6.8-1 ..................................... Revision 18 Pages 5.8.1-4 thru 5.8.1-9 ............. Revision 19 Pages 6.8.1-1 thru 6.8.1-6 ............. Revision 18 Page 5.8.2-1 .................................. Revision 18 Pages 6.8.2-1 thru 6.8.2-2 ............. Revision 18 Pages 5.8.2-2 thru 5.8.2-4 ............. Revision 19 Pages 6.8.3-1 thru 6.8.3-20 ........... Revision 18 Pages 5.8.2-5 thru 5.8.2-7 ............. Revision 18 Pages 6.8.4-1 thru 6.8.4-34 ........... Revision 18 Page 5.8.2-8 .................................. Revision 19 Pages 6.8.5-1 thru 6.8.5-34 ........... Revision 18 Pages 5.8.3-1 thru 5.8.3-6 ............. Revision 18 Page 6.8.6-1 .................................. Revision 18 Pages 5.8.4-1 thru 5.8.4-2 ............. Revision 18 Pages 6.8.7-1 thru 6.8.7-27 ........... Revision 18 Page 5.8.4-3 .................................. Revision 19 Page 6.9-1 ..................................... Revision 18 Pages 5.8.5-1 thru 5.8.5-3 ............. Revision 19 Page 6.9.1-1 .................................. Revision 18 Pages 5.8.6-1 thru 5.8.6-5 ............. Revision 19 Page 6.9.2-1 .................................. Revision 18 Pages 5.8.7-1 thru 5.8.7-10 ........... Revision 19 Pages 5.8.8-1 thru 5.8.8-4 ............. Revision 19 Chapter 7 Pages 5.8.8-5 thru 5.8.8-6 ............. Revision 20 Page 5.8.9-1 .................................. Revision 19 Pages 7-i ..................................... Revision 22A Pages 5.8.9-2 thru 5.8.9-26 ........... Revision 18 Pages 7-ii....................................... Revision 19 Pages 5.9-1 thru 5.9-5 ................... Revision 19 Pages 7-1 thru 7-2 ......................... Revision 18 Pages 5.10-1 thru 5.10-6 ............... Revision 19 Page 7-3 ........................................ Revision 19 7 of 8

NAC-STC SAR March 2023 Docket No. 71-9235 Revision 23A List of Effective Pages (continued)

Pages 7.1-1 thru 7.1-7 .................... Revision 19 Pages 7.1-8 thru 7.1-17 ............... Revision 22A Pages 7.2-1 thru 7.2-5................. Revision 22A Pages 7.2-3 thru 7.2-6 .................... Revision 19 Pages 7.3-1 thru 7.3-11 .................. Revision 19 Pages 7.4-1 thru 7.4-11 .................. Revision 18 Page 7.4-10 ................................. Revision 23A Page 7.4-11 .................................... Revision 18 Page 7.5-1 ...................................... Revision 18 Pages 7.6-1 thru 7.6-6 .................... Revision 18 Chapter 8 Page 8-i thru 8-ii ............................ Revision 19 Page 8-1 ......................................... Revision 18 Pages 8.1-1 thru 8.1-5 .................... Revision 18 Pages 8.1-6 thru 8.1-7 .................... Revision 19 Pages 8.1-8 thru 8.1-9 .................... Revision 18 Pages 8.1-10 thru 8.1-39 ................ Revision 19 Pages 8.2-1 thru 8.2-3 .................... Revision 18 Pages 8.2-4 thru 8.2-7 .................... Revision 19 Page 8.3-1 ...................................... Revision 18 Pages 8.4-1 thru 8.4-3 .................... Revision 19 Page 8.4-4 ...................................... Revision 18 Pages 8.4-5 thru 8.4-13 .................. Revision 19 Chapter 9 Page 9-i .......................................... Revision 18 Pages 9-1 thru 9-7.......................... Revision 18 Pages 9-8 thru 9-13..................... Revision 22A 8 of 8

NAC-STC SAR March 2022 Docket No. 71-9235 Revision 22A List of Tables Table 1-1 Terminology..................................................................................................................... 1-2 Table 1.2-1 Design Characteristics of the NAC-STC .................................................................... 1.2-36 Table 1.2-2 NAC-STC Design Basis Directly Loaded Fuel Characteristics.................................. 1.2-45 Table 1.2-3 NAC-STC Design Basis Yankee Class Fuel Characteristics ...................................... 1.2-46 Table 1.2-4 NAC-STC Design Basis Connecticut Yankee Fuel Characteristics ........................... 1.2-47 Table 1.2-5 Isotopic Constituents of Yankee GTCC Waste........................................................... 1.2-48 Table 1.2-6 Isotopic Constituents of Connecticut Yankee GTCC Waste ...................................... 1.2-49 Table 1.2-7 Critical Characteristics of the WVDP HLW ............................................................... 1.2-49 Table 1.4-1 Terminology - MPC-LACBWR ................................................................................... 1.4-2 Table 1.4-2 Major Physical Design Parameters for the MPC-LACBWR Transportable Storage Canister .......................................................................................................... 1.4-17 Table 1.4-3 MPC-LACBWR Transportable Storage Canister Fabrication Specification Summary ............................................................................................... 1.4-18 Table 1.4-4 LACBWR Design Basis Fuel Characteristics............................................................. 1.4-20 Table 1.4-5 Major Physical Design Parameters of the MPC-LACBWR Damaged Fuel Can ...................................................................................................................... 1.4-21 Table 1.4-6 MPC-LACBWR Damaged Fuel Can Design and Fabrication Specification Summary... ................ 1.4-22 Table 1.4-7 Correlation of Regulatory Quality Assurance Criteria to the NAC Quality Assurance Program. ............... 1.4-24 1-iii

NAC-STC SAR March 2023 Docket No. 71-9235 Revision 23A List of Drawings Revision Drawing Number No. Title (1) 423-800, sheets 1-3 Rev 21P Cask Assembly - NAC-STC Cask 423-800, sheets 1-3 Rev 21NP(1) Cask Assembly - NAC-STC Cask 423-802, sheets 1-7 Rev 27 Cask Body - NAC-STC Cask 423-803, sheets 1-2 Rev 15 Lid Assembly - Inner, NAC-STC Cask 423-804, sheets 1-3 Rev 12 Details - Inner Lid, NAC-STC Cask 423-805, sheets 1-2 Rev 9 Lid Assembly - Outer, NAC-STC Cask 423-806, sheets 1-2 Rev 14 Port Coverplate Assy - Inner Lid, NAC-STC Cask 423-807, sheets 1-3 Rev 6 Assembly, Port Cover, NAC-STC Cask 423-209 Rev 3 Impact Limiter Assy - Upper, NAC-STC Cask 423-210 Rev 3 Impact Limiter Assy - Lower, NAC-STC Cask 423-257 Rev 3 Balsa Impact Limiter, Upper, NAC-STC Cask 423-258 Rev 3 Balsa Impact Limiter, Lower, NAC-STC Cask 423-811, sheets 1-2 Rev 13 Details - NAC-STC Cask 423-812 Rev 8 Nameplates - NAC-STC Cask 423-843 Rev 6 Transport Assembly, Balsa Impact Limiters, NAC-STC 423-859 Rev 1 Attachment Hardware, Balsa Limiters, NAC-STC 423-870 Rev 8 Fuel Basket Assembly, PWR, 26 Element, NAC-STC Cask 423-871 Rev 5 Bottom Weldment, Fuel Basket, PWR, 26 Element, NAC-STC Cask 423-872 Rev 7 Top Weldment, Fuel Basket, PWR, 26 Element, NAC-STC Cask 423-873 Rev 2 Support Disk and Misc. Basket Details, PWR, 26 Element, NAC-STC Cask 423-874 Rev 3 Heat Transfer Disk, Fuel Basket, PWR, 26 Element, NAC-STC Cask 423-875, sheets 1-2 Rev 11 Tube, NAC-STC Cask 423-878, sheets 1-2 Rev 5 Alternate Tube Assembly, NAC-STC Cask 423-880 Rev 3P(1) Shielded Thermal Shunt Assembly, NAC-STC Cask 423-880 Rev 1NP(1) Shielded Thermal Shunt Assembly, NAC-STC Cask 423-900 Rev 9 Package Assembly Transportation, NAC-STC Cask 423-901, sheets 1-2 Rev 3 Transportation Package Concept, NAC-STC Cask 423-927 Rev 2P(1) Shield Ring Assembly, NAC-STC Cask 423-927 Rev 1NP(1) Shield Ring Assembly, NAC-STC Cask 455-800, sheets 1-2 Rev 2 Assembly, Transport Cask, MPC-Yankee (1) Proprietary and Non-proprietary drawing versions are only included in their respective SAR versions.

1-iv

R-254976

NAC-STC SAR March 2017 Docket No. 71-9235 Revision 18 the-grain direction specimen was accidentally destroyed). The same procedure as outlined above was followed to establish the design maximum and minimum crush stress-strain curves for redwood in the perpendicular-to-the-grain direction, which are also used as the basis for the bounding impact limiter analyses.

The redwood material to be used for the NAC-STC impact limiters must satisfy density, crush strength (converted from the force-deflection curve) and moisture content specifications. The density of any single redwood board shall be 23.5 +/- 3.5 pounds per cubic foot. The density of any 15-degree or 30-degree pie-shaped section of redwood shall be 22.3 +/- 1.2 pounds per cubic foot. Each 15-degree pie-shaped section of redwood in the side segment of the impact limiter shall have an average dynamic crush strength in the parallel-to-the-grain direction of 6,240 +/- 620 psi at 0.4 inch/inch strain and 70F. Each 30-degree pie-shaped section of redwood in the end segment of the impact limiter shall have an average dynamic crush strength in the perpendicular-to-the-grain direction of 1,260 +/- 130 psi at 0.4 inch/inch strain and 70F. The dynamic load factor of 1.06 for redwood, previously discussed, is included in the design specification of the redwood to be used in the NAC-STC impact limiters as a reduction in the density specified for any 15-degree or 30-degree pie-shaped section. The moisture content of any single board shall be greater than 5 percent, but less than 15 percent. The average moisture content for the lot of redwood shall be less than 12 percent.

The balsa wood to be used in the NAC-STC impact limiters shall meet the specifications of MIL-S-7998A: (1) density between 7 and 10 pounds per cubic foot and (2) moisture content between 5 and 15 percent for any one piece with an average of not more than 12 percent for any lot of balsa wood. The average crush strength of the balsa wood in the parallel-to-the-grain direction at room temperature is +

81,550 psi based on Figure 16 of JPL Technical Report No.32-944 for a density of 10 pounds per cubic foot. The room-temperature crush stress-strain curve for balsa wood (Figure 2.6.7.4.1-

5) is determined based on Figure 6 of JPL Technical Report No. 32-1295. The -40F cold and the

+230F hot crush stress-strain curves are obtained by ratioing based on Figure 15 of JPL Technical Report No.32-944. To account for crush strength fabrication tolerances, the -40F cold case comparison stresses are factored by 1.10 and the +230F hot case compression stresses are factored by 0.90. The resulting design maximum and minimum crush stress-strain curves for balsa wood are also presented in Figure 2.6.7.4.1-5.

2.6.7.4-5

NAC-STC SAR March 2023 Docket No. 71-9235 Revision 23A The variation of crush strength of redwood and balsa wood as a function of the angle between the impact direction and the grain direction of the wood is shown in Figure 2.6.7.4.1-6 (Ref.

Baumeister, page 6-157).

The outside diameter of the NAC-STC transport impact limiters is 124.0 inches and the height is 44.0 inches. The overlap between the cask body and the impact limiters is 12.0 inches. Sixteen 1.0-inch diameter retaining rods attach each impact limiter to the end of the cask. The attachments are described in detail in Section 2.6.7.4.1.4.

The height of the redwood in the end section of the impact limiter is 30.0 inches. A ring of balsa wood forms a part of the end section of the impact limiter. The ring has an inside diameter of 99.2 inches, an outside diameter of 123.75 inches, and a height of 21.6 inches. The bottom region of the impact limiter is a 1.5-inch thick layer of balsa wood, which absorbs most of the kinetic energy in a 1-foot drop end impact, and limits the initial impact force to a value acceptable for normal transport conditions. The low crush strength is necessary because the impact area is considerably greater in a flat end impact than in any other drop orientation. The redwood and the balsa wood ring absorb the majority of the energy in a corner impact and all of the energy in a side impact.

The different segments and sections comprising the impact limiters are bonded to each other with a resorcinol based adhesive.

For each of the impact load conditions in this analysis, the impact limiters remain in position on the cask and absorb the energy of the impact; thus, they limit the impact loads to the calculated values tabulated in Tables 2.6.7.4.1-1 and 2.6.7.4.1-2 and summarized in Table 2.6.7.4.1-3.

2.6.7.4.1.2 Method of Analysis - Redwood Impact Limiter The primary areas of analytical evaluation that are required in an impact limiter analysis are: (1) crush depth; (2) maximum crush force; and (3) attachment to the cask. The crush depth and maximum crush force are dependent on the crush strength of the crushable material, the area engaged in crushing, the geometry of the impact limiter, and the energy to be dissipated.

Deceleration forces for the NAC-STC redwood and balsa wood impact limiters are directly related to the area crushing and the crush strength of the limiter materials. The area engaged in 2.6.7.4-6

March 2023 Revision 23A NACSTC NAC Storage Transport Cask SAFETY ANALYSIS REPORT Non-Proprietary Version Volume 2 of 2 Docket No. 719235 Atlanta Corporate Headquarters: 3950 East Jones Bridge Road, Norcross, Georgia 30092 USA Phone 7704471144, Fax 7704471797, www.nacintl.com

NAC-STC SAR March 2023 Docket No. 71-9235 Revision 23A List of Effective Pages Chapter 1 Pages 2.1.1-3 thru 2.1.1-5 ............. Revision 19 Pages 2.1.2-1 thru 2.1.2-5 ............. Revision 18 Page 1-i thru 1-iii ........................Revision 22A Pages 2.1.3-1 thru 2.1.3-15 ........... Revision 18 Page 1-iv .....................................Revision 23A Pages 2.2-1 thru 2.2-3 ................... Revision 18 Pages 1-v thru 1-viii....................Revision 22A Page 2.2-4 ..................................... Revision 19 Pages 1-1 ....................................... Revision 20 Pages 2.2-5 thru 2.2-8 ................... Revision 18 Pages 1-2 thru 1-11 ....................... Revision 18 Pages 2.3.1-1 thru 2.3.1-2 ............. Revision 18 Page 1-12 ...................................... Revision 19 Page 2.3.2-1 .................................. Revision 18 Page 1.1-1 thru 1.1-3..................... Revision 18 Pages 2.3.2-2 thru 2.3.2-4 ............. Revision 19 Page 1.1-4 ..................................... Revision 19 Page 2.3.2-5 .................................. Revision 18 Page 1.1-5 thru 1.1-7..................... Revision 18 Pages 2.3.3-1 thru 2.3.3-2 ............. Revision 18 Page 1.1-8 ...................................Revision 22A Pages 2.3.4-1 thru 2.3.4-3 ............. Revision 18 Page 1.2-1 ..................................... Revision 19 Pages 2.3.5-1 thru 2.3.5-2 ............. Revision 18 Pages 1.2-2 thru 1.2-8 ................... Revision 18 Pages 2.3.6-1 thru 2.3.6-5 ............. Revision 18 Page 1.2-9 ..................................... Revision 19 Page 2.3.7-1 .................................. Revision 18 Pages 1.2-10 thru 1.2-38 ............... Revision 18 Page 2.3.8-1 .................................. Revision 18 Page 1.2-39 ................................... Revision 20 Page 2.4-1 ..................................... Revision 18 Pages 1.2-40 thru 1.2-42 ............... Revision 18 Page 2.4.1-1 .................................. Revision 18 Pages 1.2-43 thru 1.2-44 ............... Revision 19 Page 2.4.2-1 .................................. Revision 18 Page 1.2-45 ................................... Revision 20 Page 2.4.3-1 .................................. Revision 18 Pages 1.2-46 thru 1.2-49 ............... Revision 18 Pages 2.4.4-1 thru 2.4.4-6 ............. Revision 18 Page 1.3-1 ..................................... Revision 18 Pages 2.4.4-7 thru 2.4.4-8 ............. Revision 19 Pages 1.4-1 thru 1.4-24 ................. Revision 18 Page 2.4.4-9 .................................. Revision 18 Page 2.4.4-10 ................................ Revision 19 Chapter 2 Page 2.4.5-1 .................................. Revision 18 Page 2.4.6-1 .................................. Revision 18 Pages 2-i thru 2-ii.......................... Revision 18 Pages 2.5.1-1 thru 2.5.1-38 ........... Revision 18 Page 2-iii ....................................... Revision 19 Pages 2.5.2-1 thru 2.5.2-23 ........... Revision 18 Pages 2-iv thru 2-xiv ..................... Revision 18 Page 2.5.2-24 ................................ Revision 20 Page 2-xv ....................................Revision 22A Pages 2.5.2-25 thru 2.5.2-29 ......... Revision 18 Page 2-xvi ..................................... Revision 18 Pages 2.6-1 thru 2.6-2 ................... Revision 18 Page 2-xvii .................................... Revision 19 Pages 2.6.1-1 thru 2.6.1-7 ............. Revision 18 Pages 2-xviii thru 2-xxxii ............. Revision 18 Pages 2.6.2-1 thru 2.6.2-8 ............. Revision 18 Page 2-xxxiii ...............................Revision 22A Page 2.6.3-1 .................................. Revision 18 Page 2-xxxiv thru 2-lxviii ............. Revision 18 Page 2.6.4-1 .................................. Revision 18 Page 2-1 ........................................ Revision 18 Pages 2.6.5-1 thru 2.6.5-2 ............. Revision 18 Pages 2.1.1-1 thru 2.1.1-2 ............. Revision 18 Page 2.6.6-1 .................................. Revision 18 1 of 8

NAC-STC SAR March 2023 Docket No. 71-9235 Revision 23A List of Effective Pages (continued)

Page 2.6.7-1 ................................... Revision 18 Pages 2.6.12.3-1 thru Pages 2.6.7.1-1 thru 2.6.7.1-17...... Revision 18 2.6.12.3-7 ................................. Revision 18 Pages 2.6.7.2-1 thru 2.6.7.2-19...... Revision 18 Pages 2.6.12.4-1 thru Pages 2.6.7.3-1 thru 2.6.7.3-11...... Revision 18 2.6.12.4-3 ................................. Revision 18 Pages 2.6.7.4-1 thru 2.6.7.4-5........ Revision 18 Pages 2.6.12.5-1 thru Pages 2.6.7.4-6 ........................... Revision 23A 2.6.12.5-3 ................................. Revision 18 Pages 2.6.7.4-7 thru 2.6.7.4-59...... Revision 18 Page 2.6.12.6-1 .............................. Revision 19 Pages 2.6.7.5-1 thru 2.6.7.5-4........ Revision 18 Page 2.6.12.6-2 .............................. Revision 18 Pages 2.6.7.5-5 thru 2.6.7.5-8........ Revision 19 Pages 2.6.12.7-1 thru Pages 2.6.7.5-7 thru 2.6.7.5-13...... Revision 18 2.6.12.7-22 ............................... Revision 18 Pages 2.6.7.6-1 thru 2.6.7.6-13...... Revision 18 Pages 2.6.12.8-1 thru Pages 2.6.7.7-1 thru 2.6.7.7-5........ Revision 18 2.6.12.8-2 ................................. Revision 18 Page 2.6.7.8-1 ................................ Revision 19 Pages 2.6.12.9-1 thru Pages 2.6.7.8-2 thru 2.6.7.8-3........ Revision 20 2.6.12.9-11 ............................... Revision 18 Page 2.6.7.8-4 ................................ Revision 19 Page 2.6.12.10-1 ............................ Revision 18 Page 2.6.8-1 ................................... Revision 18 Page 2.6.12.11-1 ............................ Revision 18 Page 2.6.9-1 ................................... Revision 18 Page 2.6.12.12-1 ............................ Revision 18 Page 2.6.10-1 ................................. Revision 18 Page 2.6.12.13-1 ............................ Revision 19 Pages 2.6.10.1-1 thru Pages 2.6.12.13-2 thru 2.6.10.1-2 ................................. Revision 18 2.6.12.13-4 ............................... Revision 18 Pages 2.6.10.2-1 thru Pages 2.6.13-1 thru 2.6.10.2-4 ................................. Revision 18 2.6.13-3 .................................... Revision 18 Pages 2.6.10.3-1 thru Pages 2.6.13.1-1 thru 2.6.10.3-7 ................................. Revision 18 2.6.13.1-2 ................................. Revision 18 Pages 2.6.11-1 thru Pages 2.6.13.2-1 thru 2.6.11-2 .................................... Revision 19 2.6.13.2-7 ................................. Revision 18 Pages 2.6.11.1-1 thru Pages 2.6.13.3-1 thru 2.6.11.1-4 ................................. Revision 19 2.6.13.3-4 ................................. Revision 18 Pages 2.6.11.2-1 thru Pages 2.6.13.4-1 thru 2.6.11.2-11 ............................... Revision 19 2.6.13.4-5 ................................. Revision 18 Page 2.6.11.3-1 .............................. Revision 18 Pages 2.6.13.5-1 thru Pages 2.6.12-1 thru 2.6.13.5-2 ................................. Revision 18 2.6.12-5 .................................... Revision 18 Pages 2.6.13.6-1 thru Page 2.6.12.1-1 .............................. Revision 18 2.6.13.6-2 ................................. Revision 18 Pages 2.6.12.2-1 thru Pages 2.6.13.7-1 thru 2.6.12.2-5 ................................. Revision 18 2.6.13.7-2 ................................. Revision 18 Page 2.6.13.8-1 .............................. Revision 18 2 of 8

NAC-STC SAR March 2023 Docket No. 71-9235 Revision 23A List of Effective Pages (continued)

Page 2.6.13.9-1 ............................. Revision 18 Pages 2.6.15.4-1 thru Page 2.6.13.10-1 ........................... Revision 18 2.6.15.4-4 ................................ Revision 18 Pages 2.6.13.11-1 thru Page 2.6.15.5-1 ............................. Revision 18 2.6.13.11-3 .............................. Revision 18 Pages 2.6.15.6-1 thru Pages 2.6.13.12-1 thru 2.6.15.6-3 ................................ Revision 18 2.6.13.12-2 .............................. Revision 18 Page 2.6.15.7-1 ............................. Revision 18 Pages 2.6.14-1 thru Page 2.6.15.8-1 ............................. Revision 18 2.6.14-8 ................................... Revision 18 Page 2.6.15.9-1 ............................. Revision 18 Pages 2.6.14.1-1 thru Page 2.6.15.10-1 ........................... Revision 18 2.6.14.1-2 ................................ Revision 18 Pages 2.6.15.11-1 thru Pages 2.6.14.2-1 thru 2.6.15.11-3 .............................. Revision 18 2.6.14.2-16 .............................. Revision 18 Pages 2.6.15.12-1 thru Pages 2.6.14.3-1 thru 2.6.15.12-2 .............................. Revision 18 2.6.14.3-3 ................................ Revision 18 Pages 2.6.16-1 thru Pages 2.6.14.4-1 thru 2.6.16-6 ................................... Revision 18 2.6.14.4-4 ................................ Revision 18 Pages 2.6.16.1-1 thru Pages 2.6.14.5-1 thru 2.6.16.1-2 ................................ Revision 18 2.6.14.5-3 ................................ Revision 18 Pages 2.6.16.2-1 thru Page 2.6.14.6-1 ............................. Revision 18 2.6.16.2-11 .............................. Revision 18 Pages 2.6.14.7-1 thru Pages 2.6.16.3-1 thru 2.6.14.7-14 .............................. Revision 18 2.6.16.3-3 ................................ Revision 18 Pages 2.6.14.8-1 thru Pages 2.6.16.4-1 thru 2.6.14.8-6 ................................ Revision 18 2.6.16.4-3 ................................ Revision 18 Page 2.6.14.9-1 ............................. Revision 18 Pages 2.6.16.5-1 thru Page 2.6.14.10-1 ........................... Revision 18 2.6.15.5-3 ................................ Revision 18 Pages 2.6.14.11-1 thru Pages 2.6.16.6-1 thru 2.6.14.11-5 .............................. Revision 18 2.6.16.6-3 ................................ Revision 18 Pages 2.6.14.12-1 thru Pages 2.6.16.7-1 thru 2.6.14.12-5 .............................. Revision 18 2.6.16.7-12 .............................. Revision 18 Page 2.6.15-1 ................................ Revision 18 Pages 2.6.16.8-1 thru Pages 2.6.15.1-1 thru 2.6.16.8-7 ................................ Revision 18 2.6.15.1-2 ................................ Revision 18 Page 2.6.16.9-1 ............................. Revision 18 Pages 2.6.15.2-1 thru Page 2.6.16.10-1 ........................... Revision 18 2.6.15.2-7 ................................ Revision 18 Pages 2.6.16.11-1 thru Pages 2.6.15.3-1 thru 2.6.16.11-4 .............................. Revision 18 2.6.15.3-4 ................................ Revision 18 Pages 2.6.16.12-1 thru 2.6.16.12-2 .............................. Revision 18 3 of 8

NAC-STC SAR March 2023 Docket No. 71-9235 Revision 23A List of Effective Pages (continued)

Pages 2.6.16.13-1 thru Page 2.7.2.6-1 ................................ Revision 18 2.6.16.13-2 ............................... Revision 18 Page 2.7.3.1-1 ................................ Revision 18 Page 2.6.16.14-1 ............................ Revision 18 Pages 2.7.3.2-1 thru 2.7.3.2-5 ........ Revision 18 Pages 2.6.17-1 thru Pages 2.7.3.3-1 thru 2.7.3.3-3 ........ Revision 18 2.6.17-13 .................................. Revision 18 Pages 2.7.3.4-1 thru 2.7.3.4-2 ........ Revision 18 Pages 2.6.18-1 thru Page 2.7.3.5-1 ................................ Revision 18 2.6.18-6 .................................... Revision 18 Page 2.7.3.6-1 ................................ Revision 18 Pages 2.6.19-1 thru Page 2.7.4-1 ................................... Revision 18 2.6.19-23 .................................. Revision 18 Page 2.7.5-1 ................................... Revision 18 Pages 2.6.20-1 thru Page 2.7.6-1 ................................... Revision 18 2.6.20-20 .................................. Revision 18 Pages 2.7.7-1 thru 2.7.7-4 .............. Revision 18 Pages 2.6.21-1 thru Pages 2.7.8-1 thru 2.7.8-4 .............. Revision 18 2.6.21.-2 ................................... Revision 18 Pages 2.7.8.1-1 thru 2.7.8.1-43 ...... Revision 18 Pages 2.7-1 thru 2.7-2 .................... Revision 18 Pages 2.7.8.2-1 thru 2.7.8.2-2 ........ Revision 19 Page 2.7.1-1 thru 2.7.1-2 ............... Revision 18 Pages 2.7.8.3-1 thru 2.7.8.3-6 ........ Revision 18 Pages 2.7.1.1-1 thru Pages 2.7.8.3-7 thru 2.7.8.3-8 ........ Revision 19 2.7.1.1-15 ................................. Revision 18 Page 2.7.8.3-9 ................................ Revision 18 Pages 2.7.1.2-1 thru Pages 2.7.8.3-10 thru 2.7.8.3-12 .... Revision 19 2.7.1.2-15 ................................. Revision 18 Page 2.7.8.3-13 .............................. Revision 18 Pages 2.7.1.3-1 thru Pages 2.7.8.4-1 thru 2.7.8.4-10 ...... Revision 18 2.7.1.3-9 ................................... Revision 18 Page 2.7.8.5-1 ................................ Revision 19 Pages 2.7.1.4-1 thru Pages 2.7.9-1 thru 2.7.9-40 ............ Revision 18 2.7.1.4-11. ................................ Revision 18 Pages 2.7.10-1 thru 2.7.10-12 ........ Revision 18 Pages 2.7.1.5-1 thru Pages 2.7.11-1 thru 2.7.11-16 ........ Revision 18 2.7.1.5-3 ................................... Revision 18 Pages 2.7.12-1 thru 2.7.12-10 ........ Revision 18 Pages 2.7.1.6-1 thru Pages 2.7.13-1 thru 2.7.13-4 .......... Revision 18 2.7.1.6-16 ................................. Revision 18 Pages 2.7.13.1-1 thru Page 2.7.2-1 ................................... Revision 18 2.7.13.1-18 ............................... Revision 18 Pages 2.7.2.1-1 thru Pages 2.7.13.2-1 thru 2.7.2.1-5 ................................... Revision 18 2.7.13.2-2 ................................. Revision 18 Pages 2.7.2.2-1 thru Pages 2.7.13.3-1 thru 2.7.2.2-9 ................................... Revision 18 2.7.13.3-4 ................................. Revision 18 Pages 2.7.2.3-1 thru Pages 2.7.13.4-1 thru 2.7.2.3-6 ................................... Revision 18 2.7.13.4-8 ................................. Revision 18 Pages 2.7.2.4-1 thru Pages 2.7.13.5-1 thru 2.7.2.4-7 ................................... Revision 18 2.7.13.5-2 ................................. Revision 18 Page 2.7.2.5-1 ................................ Revision 18 4 of 8

NAC-STC SAR March 2023 Docket No. 71-9235 Revision 23A List of Effective Pages (continued)

Pages 2.7.14-1 thru Page 2.11.6.12-1 thru 2.7.14-13 ................................. Revision 18 2.11.6.12-62 ............................ Revision 18 Pages 2.7.15-1 thru Pages 2.11.6.13-1 thru 2.7.15-16 ................................. Revision 18 2.11.6.13-35 ............................ Revision 18 Page 2.8-1 ..................................... Revision 18 Pages 2.11.6.14-1 thru Pages 2.9-1 thru 2.9-11 ................. Revision 18 2.11.6.14-10 ............................ Revision 18 Pages 2.10.1-1 thru 2.10.1-4 ......... Revision 18 Page 2.11.6.15-1 ........................... Revision 18 Pages 2.10.2-1 thru 2.10.2-93 ....... Revision 18 Pages 2.11.7-1 thru 2.11.7-8 ......... Revision 18 Pages 2.10.3-1 thru 2.10.3-7 ......... Revision 18 Pages 2.11.7.8-1 thru Pages 2.10.4-1 thru 2.11.7.8-34 .............................. Revision 18 2.10.4-288 ............................... Revision 18 Pages 2.11.7.9-1 thru Pages 2.10.5-1 thru 2.10.5-22 ....... Revision 18 2.11.7.9-14 .............................. Revision 18 Pages 2.10.6-1 thru 2.10.6.-36 ...... Revision 18 Pages 2.11.7.10-1 thru 2.11.7.10-5 .............................. Revision 18 13 drawings in Sections Page 2.11.8-1 ................................ Revision 18 2.10.6.6 and 2.10.6.7 Pages 2.11.9-1 thru 2.11.9-10 ....... Revision 18 Page 2.12.1-1 ................................ Revision 18 Pages 2.10.6-37 thru Pages 2.12.2-1 thru 2.12.2-2 ......... Revision 18 2.10.6-88 ................................. Revision 18 Page 2.12.3-1 ................................ Revision 18 Pages 2.10.7-1 thru 2.10.7-26 ....... Revision 18 Page 2.12.4-1 ................................ Revision 18 Pages 2.10.8-1 thru 2.10.8-24 ....... Revision 18 Page 2.12.5-1 ................................ Revision 18 Pages 2.10.9-1 thru 2.10.9-11 ....... Revision 18 Page 2.12.6-1 thru 2.12.6-29......... Revision 18 Pages 2.10.10-1 thru Page 2.13.1-1 ................................ Revision 18 2.10.10-11 ............................... Revision 18 Page 2.13.2-1 ................................ Revision 18 Pages 2.10.11-1 thru Page 2.13.2-2 ................................ Revision 19 2.10.11-8 ................................. Revision 18 Page 2.13.3-1 ................................ Revision 18 Pages 2.10.12-1 thru Page 2.13.4-1 ................................ Revision 18 2.10.12-31 ............................... Revision 18 Page 2.13.5-1 ................................ Revision 18 Pages 2.13.6-1 thru 2.13.6-45 ....... Revision 18 4 drawings in Section 2.10.12 Pages 2.13.6-46 thru 2.13.6-60 .. Revision 22A Pages 2.11.1-1 thru 2.11.1-2 ......... Revision 18 Chapter 3 Pages 2.11.2-1 thru 2.11.2-2 ......... Revision 18 Page 2.11.3-1 ................................ Revision 18 Page 3-i ......................................... Revision 19 Page 2.11.4-1 ................................ Revision 18 Page 3-ii ........................................ Revision 18 Page 2.11.5-1 ................................ Revision 18 Page 3-iii .................................... Revision 22A Pages 2.11.6-1 thru 2.11.6-6 ......... Revision 18 Pages 3-iv thru 3-v ........................ Revision 19 5 of 8

NAC-STC SAR March 2023 Docket No. 71-9235 Revision 23A List of Effective Pages (continued)

Page 3-vi ..................................... Revision 22A Pages 3.8.4-4 thru 3.8.4-5 .............. Revision 19 Page 3-vii ....................................... Revision 19 Pages 3.8.4-6 thru 3.8.4-15 ......... Revision 22A Page 3-viii................................... Revision 22A Pages 3.8.5-1 thru 3.8.5-2 .............. Revision 19 Page 3.1-1 ...................................... Revision 18 Page 3.8.6-1 ................................... Revision 18 Page 3.1-2 ................................... Revision 22A Pages 3.1-3 thru 3.1-12 .................. Revision 18 Chapter 4 Pages 3.2-1 thru 3.2-14 .................. Revision 18 Page 3.3-1 ...................................... Revision 18 Page 4-i .......................................... Revision 19 Page 3.3-2 ...................................... Revision 19 Pages 4-ii thru 4-iii ........................ Revision 18 Pages 3.3-3 thru 3.3-6 .................... Revision 18 Pages 4.1-1 thru 4.1-10 .................. Revision 18 Pages 3.4-1 thru 3.4-6 .................... Revision 18 Pages 4.2-1 thru 4.2-18 .................. Revision 18 Pages 3.4-7 thru 3.4-16 .................. Revision 19 Pages 4.3-1 thru 4.3-4 .................... Revision 18 Pages 3.4-17 thru 3.4-30 ................ Revision 18 Page 4.4-1 ...................................... Revision 18 Page 3.4-31 .................................... Revision 20 Pages 4.5-1 thru 4.5-13 .................. Revision 18 Pages 3.4-32 thru 3.4-44 ................ Revision 18 Page 4.5-14 .................................... Revision 19 Pages 3.4-45 thru 3.4-86 ................ Revision 19 Pages 4.5-15 thru 4.5-19 ................ Revision 18 Pages 3.5-1 thru 3.5-16 .................. Revision 18 Pages 4.5-20 thru 4.5-31 ................ Revision 19 Page 3.6-1 ...................................... Revision 18 Page 4.5-32 .................................... Revision 20 Pages 3.6.1-1 thru 3.6.1-4 .............. Revision 18 Pages 4.5-33 thru 4.5-38 ................ Revision 19 Pages 3.6.2-1 thru 3.6.2-3 .............. Revision 18 Pages 4.6-1 thru 4.6-2 .................... Revision 18 Pages 3.6.3-1 thru 3.6.3-3 .............. Revision 18 Pages 4.7-1 thru 4.7-3 .................... Revision 18 Pages 3.6.4-1 thru 3.6.4-24 ............ Revision 18 Pages 3.6.5-1 thru 3.6.5-3 .............. Revision 18 Chapter 5 Page 3.7-1 ...................................... Revision 18 Pages 3.7.1-1 thru 3.7.1-3 .............. Revision 18 Pages 5-i thru 5-ii .......................... Revision 18 Pages 3.7.2-1 thru 3.7.2-2 .............. Revision 18 Page 5-iii ........................................ Revision 19 Pages 3.7.3-1 thru 3.7.3-2 .............. Revision 18 Pages 5-iv thru 5-ix ....................... Revision 18 Pages 3.7.4-1 thru 3.7.4-9 .............. Revision 18 Pages 5-x thru 5-xii ....................... Revision 19 Pages 3.7.5-1 thru 3.7.5-2 .............. Revision 18 Pages 5-xiii thru 5-xvii .................. Revision 18 Page 3.8-1 ...................................... Revision 18 Pages 5-xviii thru 5-xx .................. Revision 19 Pages 3.8.1-1 thru 3.8.1-4 .............. Revision 18 Page 5-1 ......................................... Revision 18 Pages 3.8.2-1 thru 3.8.2-3 .............. Revision 18 Page 5-2 ......................................... Revision 19 Page 3.8.3-1 ................................... Revision 18 Pages 5-3 thru 5-4 .......................... Revision 18 Page 3.8.3-2 ................................... Revision 19 Pages 5.1-1 thru 5.1-30 .................. Revision 18 Page 3.8.3-3 ................................... Revision 18 Pages 5.2-1 thru 5.2-40 .................. Revision 18 Page 3.8.4-1 ................................ Revision 22A Pages 5.3-1 thru 5.3-33 .................. Revision 18 Pages 3.8.4-2 thru 3.8.4-3 .............. Revision 18 Pages 5.4-1 thru 5.4-3 .................... Revision 18 6 of 8

NAC-STC SAR March 2023 Docket No. 71-9235 Revision 23A List of Effective Pages (continued)

Pages 5.4-4 thru 5.4-7 ................... Revision 19 Pages 5.11-1 thru 5.11-3 ............... Revision 19 Pages 5.4-8 thru 5.4-41 ................. Revision 18 Pages 5.5-1 thru 5.5-61 ................. Revision 18 Chapter 6 Page 5.6-1 ..................................... Revision 18 Pages 5.6.1-1 thru 5.6.1-9 ............. Revision 18 Pages 6-i thru 6-ix ......................... Revision 18 Pages 5.6.2-1 thru 5.6.2-20 ........... Revision 18 Pages 6.1-1 thru 6.1-6 ................... Revision 18 Pages 5.6.3-1 thru 5.6.3-13 ........... Revision 18 Pages 6.2-1 thru 6.2-11 ................. Revision 18 Pages 5.6.4-1 thru 5.6.4-34 ........... Revision 18 Page 6.3-1 ..................................... Revision 20 Page 5.6.5-1 .................................. Revision 18 Pages 6.3-2 thru 6.3-10 ................. Revision 18 Pages 5.6.6-1 thru 5.6.6-57 ........... Revision 18 Pages 6.4-1 thru 6.4-2 ................... Revision 18 Page 5.7-1 ..................................... Revision 18 Page 6.4.1-1 .................................. Revision 18 Pages 5.7.1-1 thru 5.7.1-5 ............. Revision 18 Pages 6.4.2-1 thru 6.4.2-11 ........... Revision 18 Pages 5.7.2-1 thru 5.7.2-5 ............. Revision 18 Pages 6.4.3-1 thru 6.4.3-29 ........... Revision 18 Pages 5.7.3-1 thru 5.7.3-10 ........... Revision 18 Pages 6.4.4-1 thru 6.4.4-30 ........... Revision 18 Pages 5.7.4-1 thru 5.7.4-14 ........... Revision 18 Pages 6.5-1 thru 6.5-2 ................... Revision 18 Page 5.7.5-1 .................................. Revision 18 Pages 6.5.1-1 thru 6.5.1-21 ........... Revision 18 Pages 5.7.6-1 thru 5.7.6-22 ........... Revision 18 Pages 6.5.2-1 thru 6.5.2-20 ........... Revision 18 Page 5.8-1 ..................................... Revision 19 Pages 6.6-1 thru 6.6-2 ................... Revision 18 Pages 5.8.1-1 thru 5.8.1-2 ............. Revision 19 Pages 6.7-1 thru 6.7-333 ............... Revision 18 Page 5.8.1-3 .................................. Revision 18 Page 6.8-1 ..................................... Revision 18 Pages 5.8.1-4 thru 5.8.1-9 ............. Revision 19 Pages 6.8.1-1 thru 6.8.1-6 ............. Revision 18 Page 5.8.2-1 .................................. Revision 18 Pages 6.8.2-1 thru 6.8.2-2 ............. Revision 18 Pages 5.8.2-2 thru 5.8.2-4 ............. Revision 19 Pages 6.8.3-1 thru 6.8.3-20 ........... Revision 18 Pages 5.8.2-5 thru 5.8.2-7 ............. Revision 18 Pages 6.8.4-1 thru 6.8.4-34 ........... Revision 18 Page 5.8.2-8 .................................. Revision 19 Pages 6.8.5-1 thru 6.8.5-34 ........... Revision 18 Pages 5.8.3-1 thru 5.8.3-6 ............. Revision 18 Page 6.8.6-1 .................................. Revision 18 Pages 5.8.4-1 thru 5.8.4-2 ............. Revision 18 Pages 6.8.7-1 thru 6.8.7-27 ........... Revision 18 Page 5.8.4-3 .................................. Revision 19 Page 6.9-1 ..................................... Revision 18 Pages 5.8.5-1 thru 5.8.5-3 ............. Revision 19 Page 6.9.1-1 .................................. Revision 18 Pages 5.8.6-1 thru 5.8.6-5 ............. Revision 19 Page 6.9.2-1 .................................. Revision 18 Pages 5.8.7-1 thru 5.8.7-10 ........... Revision 19 Pages 5.8.8-1 thru 5.8.8-4 ............. Revision 19 Chapter 7 Pages 5.8.8-5 thru 5.8.8-6 ............. Revision 20 Page 5.8.9-1 .................................. Revision 19 Pages 7-i ..................................... Revision 22A Pages 5.8.9-2 thru 5.8.9-26 ........... Revision 18 Pages 7-ii....................................... Revision 19 Pages 5.9-1 thru 5.9-5 ................... Revision 19 Pages 7-1 thru 7-2 ......................... Revision 18 Pages 5.10-1 thru 5.10-6 ............... Revision 19 Page 7-3 ........................................ Revision 19 7 of 8

NAC-STC SAR March 2023 Docket No. 71-9235 Revision 23A List of Effective Pages (continued)

Pages 7.1-1 thru 7.1-7 .................... Revision 19 Pages 7.1-8 thru 7.1-17 ............... Revision 22A Pages 7.2-1 thru 7.2-5................. Revision 22A Pages 7.2-3 thru 7.2-6 .................... Revision 19 Pages 7.3-1 thru 7.3-11 .................. Revision 19 Pages 7.4-1 thru 7.4-11 .................. Revision 18 Page 7.4-10 ................................. Revision 23A Page 7.4-11 .................................... Revision 18 Page 7.5-1 ...................................... Revision 18 Pages 7.6-1 thru 7.6-6 .................... Revision 18 Chapter 8 Page 8-i thru 8-ii ............................ Revision 19 Page 8-1 ......................................... Revision 18 Pages 8.1-1 thru 8.1-5 .................... Revision 18 Pages 8.1-6 thru 8.1-7 .................... Revision 19 Pages 8.1-8 thru 8.1-9 .................... Revision 18 Pages 8.1-10 thru 8.1-39 ................ Revision 19 Pages 8.2-1 thru 8.2-3 .................... Revision 18 Pages 8.2-4 thru 8.2-7 .................... Revision 19 Page 8.3-1 ...................................... Revision 18 Pages 8.4-1 thru 8.4-3 .................... Revision 19 Page 8.4-4 ...................................... Revision 18 Pages 8.4-5 thru 8.4-13 .................. Revision 19 Chapter 9 Page 9-i .......................................... Revision 18 Pages 9-1 thru 9-7.......................... Revision 18 Pages 9-8 thru 9-13..................... Revision 22A 8 of 8

NAC-STC SAR March 2017 Docket No. 71-9235 Revision 18 Table 7.4-1 NAC-STC Containment Boundary Leakage Testing Requirements (Continued)

Containment Content Condition Allowable Fabrication, Preshipment Leak Fabrication, Preshipment Condition Maintenance and Test Rate/Sensitivity Maintenance and Leakage Test Periodic Leakage Test Periodic Leakage Location/Method Rate/Sensitivity Rate Test Location/Method B1 Up to 26 directly loaded Allowable leakage Allowable leakage Evacuated envelope Evacuated Using double intact/undamaged PWR rate is < 2 x 10-7 cm3/s rate is < 2 x 10-7 test of the inner lid envelope test of metallic O-spent fuel assemblies (helium) cm3/s (helium) inner O-ring, and the the inner lid having burnups of 45,000 (i.e., leaktight) for (i.e., leaktight) for vent and drain inner O-ring, and rings MWd/MTU for immediate each component test\ each component test coverplates inner O- the vent and transport, or canistered rings with drain coverplates Yankee Class or Minimum test Minimum test atmospheric helium inner O-rings Connecticut Yankee or sensitivity is sensitivity is in the cask cavity. with atmospheric MPC-LACBWR spent fuel < 1 x 10-7 cm3/s < 1 x 10-7 cm3/s helium in the assemblies, Reconfigured (helium) (helium) Test envelope cask cavity.

Fuel Assemblies, Damaged provided by the inner Fuel Cans or GTCC waste and outer O-rings of Test envelope and MPC-WVDP HLW the inner lid and vent provided by the overpack and drain port inner and outer coverplates. O-rings of the inner lid and vent Testing is performed and drain port in accordance with coverplates.

ANSI N14.5 requirements. Testing is performed in accordance with ANSI N14.5 requirements.

7.4-9

NAC-STC SAR March 2023 Docket No. 71-9235 Revision 23A Table 7.4-1 NAC-STC Containment Boundary Leakage Testing Requirements (Continued)

Containment Content Allowable Fabrication, Preshipment Leak Test Fabrication, Preshipment Condition Condition Maintenance and Periodic Rate/Sensitivity Maintenance and Leakage Test Leakage Test Periodic Leakage Location/Method Rate/Sensitivity Rate Test Location/Method B2 Up to 26 Either Either Evacuated Viton O-rings directly loaded envelope test of tested with a gas Using either For double Viton O- For double Viton O-ring intact/undamage the inner lid inner pressure drop test double non- ring seals: seals:

d PWR spent O-ring, and the for a minimum of metallic (e.g.,

fuel assemblies Allowable leakage rate is No detected leakage when vent and drain 15 minutes Viton) O-rings having burnups < 9.3 x10-5 cm3/s tested to a sensitivity of coverplates inner applied to the or inner metallic of 45,000 (helium) for the total of 10-3 ref.cm3/s for double O-rings with interseal test seal with outer MWd/MTU for the three leakage tests Viton O-ring seals that have atmospheric ports of the inner Viton seal immediate not been replaced during helium in the cask lid, and vent and Minimum test sensitivity transport. loading operations; cavity. drain port is < 4.7 x 10-5 cm3/s Or coverplates; (helium) for double Test envelope Viton O-ring seals; Allowable leakage rate is provided by the Metallic inner Or, < 9.3 x10-5 cm3/s (helium) inner and outer seal or replaced for the total of the three O-rings of the Viton O-rings to For inner metallic seals: inner lid and vent Maintenance leakage tests and drain port Leakage Test Allowable leakage rate is Minimum test sensitivity is coverplates. requirements

< 2 x 10-7 cm3/sec

< 4.7 x 10-5 cm3/s (helium); with evacuated (helium) (i.e., leaktight) Testing is envelope.

For any replaced inner performed in Minimum test sensitivity metallic seals: accordance with is < 1 x 10-7 cm3/sec (helium) 2 x 10-7 cm3/sec (helium) ANSI N14.5 at a minimum sensitivity of requirements.

< 1 x 10-7 cm3/sec (helium) 7.4-10

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