ML24141A275
| ML24141A275 | |
| Person / Time | |
|---|---|
| Site: | 07201026 |
| Issue date: | 05/23/2024 |
| From: | Storage and Transportation Licensing Branch |
| To: | Westinghouse |
| Shared Package | |
| ML24141A254 | List: |
| References | |
| EPID L 2020-RNW-0035, CAC 001028 | |
| Download: ML24141A275 (1) | |
Text
TECHNICAL SPECIFICATION AND BASES
FOR THE FuelSolutions' W74 CANISTER
to be used concurrent with
the Storage System Technical Specification
Renewed Amendment 4
Appendix C
TABLE OF CONTENTS Page
1.0 USE AND APPLICATION............................................ 1.1-1
1.1 Definitions......................................................... 1.1-1 1.2 Logical Connectors.................................................. 1.2-1 1.3 Completion Times................................................... 1.3-1 1.4 Frequency.......................................................... 1.4-1
2.0 FUNCTIONAL AND OPERATING LIMITS............................. 2.0-1 2.1 Functional and Operating Limits........................................ 2.0-1 2.2 Functional and Operating Limits Violations............................... 2.0-1
3.0 LIMITING CONDITION FOR OPERATION (LCO) APPLICABILITY........ 3.0-1
3.0 SURVEILLANCE REQUIREMENT (SR) APPLICABILITY................ 3.0-2
3.1 CANISTER INTEGRITY............................................. 3.1-1 3.1.1 W74 Canister Helium Backfill Density................................... 3.1-1 3.1.2 Canister Vacuum Drying Pressure....................................... 3.1-2 3.1.3 Canister Leak Rate................................................... 3.1-3 3.1.4 Hydraulic Ram Force During Horizontal Canister Transfer................... 3.1-4 3.1.5 W74 Canister Vertical Time Limit in Transfer Cask......................... 3.1-5
3.2 CANISTER RADIATION PROTECTION................................ 3.2-1 3.2.1 Canister Surface Contamination........................................ 3.2-1
3.3 STORAGE CASK INTEGRITY........................................ 3.3-1 3.3.1 (Deleted).......................................................... 3.3-1 3.3.2 Storage Cask Periodic Monitoring....................................... 3.3-2 3.3.3 Storage Cask Temperatures During Horizontal Transfer..................... 3.3-6
3.4 TRANSFER CASK I NTEGRITY....................................... 3.4-1 3.4.1 Transfer Cask Structural Shell Temperature............................... 3.4-1
3.5 TRANSFER CASK RADIATION PROTECTION......................... 3.5-1 3.5.1 Transfer Cask Surface Contamination.................................... 3.5-1
4.0 DESIGN FEATURES................................................ 4.0-1 4.1 Storage System...................................................... 4.0-1 4.2 Storage Pad........................................................ 4.0-2 4.3 Site Specific Parameters and Analyses................................... 4.0-2
FuelSolutions' W74 Canister Renewed Amendment 4 TABLE OF CONTENTS Page
5.0 ADMINISTRATIVE CONTROLS...................................... 5.0-1
5.1 Training Modules.................................................... 5.0-1 5.2 Preoperational Testing and Training Exercises............................. 5.0-1 5.3 Programs.......................................................... 5.0-1 5.4 Special Requirements for First System in Place............................ 5.0-1
LIST OF TABLES
Table 2.1-1 FuelSolutions' W74 Loading Specification W74-1.................... 2.0-2 Table 2.1-2 FuelSolutions' W74 Loading Specification W74-2.................... 2.0-4 Table 2.1-3 FuelSolutions' W74 Loading Specification W74-3.................... 2.0-5 Table 2.1-4 FuelSolutions' W74 Loading Specification W74-4.................... 2.0-7 Table 2.1-5 FuelSolutions' W74 Loading Specification W74-5.................... 2.0-8 Table 2.1-6 FuelSolutions' W74 Loading Specification W74-6.................... 2.0-10 Table 2.1-7 UO2 Fuel Assemblies Acceptable for Storage in the FuelSolutions' W74 Canister..................................... 2.0-11 Table 2.1-8 MOX Fuel Assemblies Acceptable for Storage in the FuelSolutions' W74 Canister.................................... 2.0-12 Table 2.1-9 Fuel Cooling Table W74-1-A..................................... 2.0-13 Table 2.1-10 Fuel Cooling Table W74-1-B..................................... 2.0-14 Table 4.1-1 FuelSolutions' W74 Canister ASME Code Requirements Compliance Summary............................................ 4.0-3
FuelSolutions' W74 Canister Renewed Amendment 4 Definitions 1.1
1.0 USE AND APPLICATION 1.1 Definitions
NOTE The defined terms of this section appear in cap italized type and are applicable throughout these Technical Specifications and Bases.
Term Definition ACTIONS ACTIONS shall be that part of a Specification that prescribes Required Actions to be taken under designated Conditions within specified Completion Times.
CANISTER The CANISTER is the storage container for SFAs approved for use at the ISFSI.
INDEPENDENT SPENT FUEL The facility within the perimeter fence licensed for STORAGE INSTALLATION (ISFSI) storage of spent fuel within CANISTERs.
INTACT FUEL Fuel assemblies with no known or suspected cladding defects greater than hairline cracks or pinhole leaks.
LOADING OPERATIONS LOADING OPERATIONS include all licensed activities on a CANISTER while it is being loaded with fuel assemblies. LOADING OPERATIONS begin when the first fuel assembly is placed in the CANISTER and end when the CANISTER outer closure plate to shell weld examination is complete.
SPENT FUEL ASSEMBLIES (SFAs) Irradiated nuclear fuel assemblies that are to be placed in a CANISTER for dry storage.
SPENT FUEL STORAGE SYSTEM The storage components including the CANISTER, (SFSS) STORAGE CASK, and TRANSFER CASK.
STORAGE CASK The cask that provides a shielded, ventilated storage environment for the loaded CANISTER. This cask is used for TRANSFER OPERATIONS.
STORAGE OPERATIONS STORAGE OPERATIONS include all licensed activities that are performed at the ISFSI while a CANISTER containing spent fuel is sitting inside a STORAGE CASK on a storage pad within the ISFSI.
FuelSolutions' W74 Canister 1.1-1 Renewed Amendment 4 Definitions 1.1 1.1 Definitions
Term Definition TRANSFER CASK The cask that is used for SFA LOADING OPERATIONS and UNLOADING OPERATIONS, and for TRANSFER OPERATIONS.
TRANSFER OPERATIONS TRANSFER OPERATIONS include all licensed activities that are performed on a CANISTER loaded with one or more fuel assemblies when it is being moved to and from the ISFSI.
For movement to the ISFSI, TRANSFER OPERATIONS begin when the CANISTER outer closure plate to shell weld inspection is complete and end when the CANISTER is in the STORAGE CASK in its storage position on the storage pad within the ISFSI.
For movement from the ISFSI, TRANSFER OPERATIONS begin when the STORAGE CASK is moved and end when the CANISTER is moved into a transportation cask or the spent fuel building.
UNLOADING OPERATIONS UNLOADING OPERATIONS include all licensed activities on a CANISTER to be unloaded of the contained fuel assemblies. UNLOADING OPERATIONS begin when the CANISTER is ready to initiate removal of the CANISTER outer closure plate and end when the last fuel assembly is removed from the CANISTER.
FuelSolutions' W74 Canister 1.1-2 Renewed Amendment 4 Logical Connectors 1.2 1.0 USE AND APPLICATION
1.2 Logical Connectors
PURPOSE The purpose of this section is to explain the meaning of logical connectors.
Logical connectors are used in Technical Specifications (TS) to discriminate between, and yet connect, discrete Conditions, Required Actions, Completion Times, Surveillances, and Frequencies. The only logical connectors that appear in TS are AND and OR. The physical arrangement of these connectors constitutes logical conventions with specific meanings.
BACKGROUND Several levels of logic may be used to state Required Actions.
These levels are identified by the placement (or nesting) of the logical connectors and by the number assigned to each Required Action. The first level of logic is identified by the first digit of the num ber assigned to a Require Action and the placement of the logical connector in the first level of nesting (i.e., left justified with the number of the Required Action).
The successive levels of logic are identified by additional digits of the Required Action number and by successive indentations of the logical connectors.
When logical connectors are used to state a Condition, Completion Time, Surveillance, or Frequency, only the first level of logic is used, and the logical connector is left justified with the statement of the Condition, Completion Time, Surveillance, or Frequency.
EXAMPLES The following examples illustrate the use of logical c onnectors.
EXAMPLE 1.2-1 ACTIONS
COMPLETION CONDITION REQUIRED ACTION TIME A. LCO not met A.1 Verify...
AND A.2 Restore...
In this example the logical connector AND is used to indicate that when in Condition A, both Required Actions A.1 and A.2 must be completed.
FuelSolutions' W74 Canister 1.2-1 Renewed Amendment 4 Logical Connectors 1.2 1.2 Logical Connectors
EXAMPLES EXAMPLE 1.2-2 (continued) ACTIONS
COMPLETION CONDITION REQUIRED ACTION TIME A. LCO not met A.1 Stop...
OR A.2.1 Verify...
AND A.2.2.1 Reduce...
OR A.2.2.2 Perform...
OR A.3 Remove...
This example represents a more complicated use of logical connectors. Required Actions A.1, A.2, and A.3 are alternative choices, only one of which must be performed as indicated by the use of the logical connector OR and the left justified placement. Any one of these three Actions may be chosen. If A.2 is chosen, then both A.2.1 and A.2.2 must be performed as indicated by the logical connector AND. Required Action A.2.2 is met by performing A.2.2.1 or A.2.2.2. The indented position of the logical connector OR indicates that A.2.2.1 and A.2.2.2 are alternative choices, only one of which must be performed.
FuelSolutions' W74 Canister 1.2-2 Renewed Amendment 4 Completion Times 1.3 1.0 USE AND APPLICATION
1.3 Completion Times
PURPOSE The purpose of this section is to establish the Completion Time convention and to provide guidance for its use.
BACKGROUND Limiting Conditions for Operation (LCOs) specify the lowest functional capability or performance levels of equipment required for safe operation of the facility. The ACTIONS associated with an LCO state Conditions that typically describe the ways in which the requirements of the LCO can fail to be met. Specified with each stated Condition are Required Action(s) and Completion Time(s).
DESCRIPTION The Completion Time is the amount of time allowed for completing a Required Action. It is referenced to the time of discovery of a situation (e.g., equipment or variable not within limits) that requires entering an ACTIONS Condition unless otherwise specified, providing the facility is in a specified condition stated in the Applicability of the LCO. Required Actions must be completed prior to the expiration of the specified Completion Time. An ACTIONS Condition remains in effect and the Required Actions apply until the Condition no longer exists or the facility is not within the LCO Applicability.
Once a Condition has been entered, subsequent subsystems, components, or variables expressed in the Condition, discovered to be not within limits, will not result in separate entry into the Condition unless specifically stated. The Required Actions of the Condition continue to apply to each additional failure, with Completion Times based on initial entry into the Condition.
FuelSolutions' W74 Canister 1.3-1 Renewed Amendment 4 Completion Times 1.3 1.3 Completion Times
EXAMPLES The following examples illustrate the use of Completion Times with different types of Conditions and changing Conditions.
EXAMPLE 1.3-1 ACTIONS
COMPLETION CONDITION REQUIRED ACTION TIME B. Required B.1 Perform Action 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br /> Action and B.1.
associated AND Completion Time not B.2 Perform Action 36 hours4.166667e-4 days <br />0.01 hours <br />5.952381e-5 weeks <br />1.3698e-5 months <br /> met. B.2.
Condition B has two Required Actions. Each Required Action has its own separate Completion Time. Each Completion Time is referenced to the time that Condition B is entered.
The Required Actions of Condition B are to complete action B.1 within 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br /> AND complete action B.2 within 36 hours4.166667e-4 days <br />0.01 hours <br />5.952381e-5 weeks <br />1.3698e-5 months <br />.
A total of 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br /> is allowed for completing action B.1 and a total of 36 hours4.166667e-4 days <br />0.01 hours <br />5.952381e-5 weeks <br />1.3698e-5 months <br /> (not 48 hours5.555556e-4 days <br />0.0133 hours <br />7.936508e-5 weeks <br />1.8264e-5 months <br />) is allowed for completing action B.2 from the time that condition B was entered. If action B.1 is completed within 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br />, the time allowed for completing action B.2 is the next 30 hours3.472222e-4 days <br />0.00833 hours <br />4.960317e-5 weeks <br />1.1415e-5 months <br /> because the total time allowed for completing action B.2 is 36 hours4.166667e-4 days <br />0.01 hours <br />5.952381e-5 weeks <br />1.3698e-5 months <br />.
FuelSolutions' W74 Canister 1.3-2 Renewed Amendment 4 Completion Times 1.3 1.3 Completion Times
EXAMPLES EXAMPLE 1.3-2 (continued) ACTIONS
COMPLETION CONDITION REQUIRED ACTION TIME A. One system A.1 Restore system 7 days not within to within limit.
limit.
B. Required B.1 Perform Action 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br /> Action and B.1.
associated AND Completion Time not B.2 Perform Action 36 hours4.166667e-4 days <br />0.01 hours <br />5.952381e-5 weeks <br />1.3698e-5 months <br /> met. B.2.
When it is determined that a system does not meet the LCO, Condition A is entered. If the system is not restored within 7 days, Condition B is also entered and the Completion Time clocks for Required Actions B.1 and B.2 start. If the system is restored after Condition B is entered, Condition A and B are exited, and therefore, the Required Actions of Condition B may be terminated.
FuelSolutions' W74 Canister 1.3-3 Renewed Amendment 4 Completion Times 1.3 1.3 Completion Times
EXAMPLES EXAMPLE 1.3-3 (continued) ACTIONS
NOTE Separate Condition entry is allowed for each component.
COMPLETION CONDITION REQUIRED ACTION TIME
A. LCO not A.1 Restore 4 hours4.62963e-5 days <br />0.00111 hours <br />6.613757e-6 weeks <br />1.522e-6 months <br /> met. compliance with LCO.
B. Required B.1 Perform Action 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br /> Action and B.1.
associated AND Completion Time not B.2 Perform Action 36 hours4.166667e-4 days <br />0.01 hours <br />5.952381e-5 weeks <br />1.3698e-5 months <br /> met. B.2.
The Note above the ACTIONS Table is a method of modifying the Completion Time tracking. If this method of modifying the Completion Time tracking were only applicable to a specific Condition, the Note would appear in that Condition rather than at the top of the ACTIONS Table.
The Note allows Condition A to be entered separately for each component, and Completion Times tracked on a per component basis. When a component does not meet the LCO, Condition A is entered and its Completion Time starts. If it is determined that subsequent components do not meet the LCO, Condition A is entered for each component and separate Completion Times start and are tracked for each component.
IMMEDIATE When Immediately is used as a Completion Time, the COMPLETION TIME Required Action should be pursued without delay and in a controlled manner.
FuelSolutions' W74 Canister 1.3-4 Renewed Amendment 4 Frequency 1.4 1.0 USE AND APPLICATION
1.4 Frequency
PURPOSE The purpose of this section is to define the proper use and application of Frequency requirements.
DESCRIPTION Each Surveillance Requirement (SR) has a specified Frequency in which the surveillance must be met in order to meet the associated Limiting Condition for Operation (LCO). An understanding of the correct application of the specified Frequency is necessary for compliance with the SR.
The specified Frequency is referred to throughout this section and each of the Specifications of Section 3.0, Surveillance Requirement (SR) Applicability. The specified Frequency consists of the requirements of the Frequency column of each SR, as well as certain Notes in the Surveillance column that modify performance requirements.
Situations where a Surveillance could be required (i.e., its Frequency could expire), but where it is not possible or not desired that it be performed until sometime after the associated LCO is within its Applicability, represent potential SR 3.0.4 conflicts. To avoid these conflicts, the SR (i.e., the Surveillance or the Frequency) is stated such that it is only required when it can be and should be performed. With an SR satisfied, SR 3.0.4 imposes no restriction.
The use of met or performed in these instances conveys specific meaning. A Surveillance is met only when the acceptance criteria are satisfied. Known failure of the requirements of a Surveillance, even without a Surveillance specifically being performed, constitutes a Surveillance not met.
FuelSolutions' W74 Canister 1.4-1 Renewed Amendment 4 Frequency 1.4 1.4 Frequency
EXAMPLES The following examples illustrate the various ways that Frequencies are specified:
EXAMPLE 1.4-1 SURVEILLANCE REQUIREMENTS SURVEILLANCE FREQUENCY Verify pressure within limit. 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br /> Example 1.4-1 contains the type of SR most often encountered in the Technical Specifications (TS). The Frequency specifies an interval (12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br />) during which the associated Surveillance must be performed at least one time. Performance of the Surveillance initiates the subsequent interval. Although the Frequency is stated as 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br />, an extension of the time interval to 1.25 times the interval specified in the Frequency is allowed by SR 3.0.2 for operational flexibility. The measurement of this interval continues at all times, even when the SR is not required to be met per SR 3.0.1 (such as when it is determined the equipment does not meet the LCO, a variable is outside specified limits, or the unit is outside the Applicability of the LCO). If the interval specified by SR 3.0.2 is exceeded while the cask is in a condition sp ecified in the Applicability of the LCO, the LCO is not met in accordance with SR 3.0.1.
If the interval as specified by SR 3.0.2 is exceeded while the unit is not in a condition specified in the Applicability of the LCO for which performance of the SR is required, the Surveillance must be performed within the Frequency requirements of SR 3.0.2 prior to entry into the specified condition. Failure to do so would result in a violation of SR 3.0.4.
FuelSolutions' W74 Canister 1.4-2 Renewed Amendment 4 Frequency 1.4 1.4 Frequency
EXAMPLES EXAMPLE 1.4-2 (continued) SURVEILLANCE REQUIREMENTS
SURVEILLANCE FREQUENCY Verify flow is within limits. Once within 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br /> prior to starting activity AND 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> thereafter Example 1.4-2 has two Frequencies. The first is a one-time performance Frequency, and the second is of the type shown in Example 1.4-1. The logical connector AND indicates that both Frequency requirements must be met. Each time the example activity is to be performed, the Surveillance must be performed prior to starting the activity.
The use of once indicates a single performance will satisfy the specified Frequency (assumi ng no other Frequencies are connected by AND). This type of Frequency does not qualify for the 25% extension allowed by SR 3.0.2.
Thereafter indicates future performances must be established per SR 3.0.2, but only after a specified condition is first met (i.e., the once performance in this example). If the specified activity is canceled or not pe rformed, the measurement of both intervals stops. New intervals start upon preparing to restart the specified activity.
FuelSolutions' W74 Canister 1.4-3 Renewed Amendment 4 Functional and Operating Limits 2.0
2.0 FUNCTIONAL AND OPERATING LIMITS
2.1 Functional and Operating Limits 2.1.1 Fuel to be Stored in the FuelSolutions' W74 CANISTER.
SFAs meeting the limits specified in Tables 2.1-1 through 2.1-6 may be stored in a W74 CANISTER.
2.2 Functional and Operating Limits Violations If any Functional and Operating Limits are violated, the following actions shall be completed.
These actions are not a substitute for the reporting requirements contained in 10CFR72.75.
2.2.1 The affected fuel assemblies shall be placed in a safe condition without delay and in a controlled manner.
2.2.2 The NRC Operations Center shall be notified within 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />.
2.2.3 A special report will be provide d to NRC within 30 days that describes the cause of the violation, the actions to restore compliance, and the actions to prevent recurrence.
FuelSolutions' W74 Canister 2.0-1 Renewed Amendment 4 Functional and Operating Limits 2.0 2.0 Functional and Operating Limits
Table 2.1-1 FuelSolutions' W74 Loading Specification W74-1
W74-1 Payload Configuration Intact UO2 Fuel Assemblies Parameter Limit/Specification
Payload
Description:
< 64 Big Rock Point BWR intact(1, 2) UO2 fuel assemblies, as defined in Table 2.1-7. Any remaining empty canister basket guide tubes and/or support tubes may be loaded with fuel assemblies meeting any of the acceptable loading specifications W74-2 through W74-6, subject to the limitations of those specifications.
If less than 64 total fuel assemb lies are loaded, a dummy fuel assembly shall be placed into each empty CANISTER basket guide tube. Each dummy fuel assembly shall be the approximate weight and size of the actual fuel being loaded.
Cladding Material/Condition: Zircaloy cladding with no known or suspected cladding defects greater than hairline cracks or pinhole leaks.
Initial Enrichment(3): < 4.10 w/o 235U. The maximum acceptable enrichments shall not exceed the enrichments defined in Table 2.1-7.
Burnup: < 40,000 MWd/MTU.
Cooling Time: 3.0 years. The minimum acceptable cooling time varies by fuel assembly class and enrichment, as a function of burnup; and is also dependent on the total cobalt content of the fuel and control components. The effects of the maximum acceptable decay heat, initial uranium content, and gamma and neutron sources are incorporated into the minimum cooling time determination. Fuel assemblies shall not be stored with less than the minimum acceptable cooling time indicated in Table 2.1-9.
FuelSolutions' W74 Canister 2.0-2 Renewed Amendment 4 Functional and Operating Limits 2.0 2.0 Functional and Operating Limits
Table 2.1-1 Notes:
(1) Intact fuel assemblies include those BRP fuel assemblies with 1 to 4 corner rods missing, and BRP 9x9 fuel assemblies with 1 rod missing from a non-corner location. This includes assemblies with partial length r ods, or rod fragments inside stainless tubes, in any of the array corner locations. It also includes 9x9 assemblies with 11x11 assembly rods in corner locations.
(2) Intact assemblies may have any number of fuel rods replaced with solid zircaloy or stainless steel rods, or with poison rods. They may also have any object other than fuel rods placed in the empty array or guide tube locations, including all forms of inserts or control components.
(3) Defined as the maximum array-average enrichme nt, which is the peak planar average initial enrichment considering all elevations along the assembly axis.
FuelSolutions' W74 Canister 2.0-3 Renewed Amendment 4 Functional and Operating Limits 2.0 2.0 Functional and Operating Limits
Table 2.1-2 FuelSolutions' W74 Loading Specification W74-2
W74-2 Payload Configuration Intact MOX Fuel Assemblies Parameter Limit/Specification
Payload
Description:
< 64 Big Rock Point BWR intact MOX fuel assemblies, as defined in Table 2.1-8. Any remaining empty canister basket guide tubes and/or support tubes may be loaded with fuel assemblies meeting any of the acceptable loading specifications W74-1 and W74-3 through W74-6, subject to the limitations of those specifications.
If less than 64 total fuel assemb lies are loaded, a dummy fuel assembly shall be placed into each empty CANISTER basket guide tube. Each dummy fuel assembly shall be the approximate weight and size of the actual fuel being loaded.
Cladding Material/Condition: Zircaloy cladding with no known or suspected cladding defects greater than hairline cracks or pinhole leaks.
Initial Enrichment: See Table 2.1-8 Burnup: See Table 2.1-8 Cooling Time: See Table 2.1-8
FuelSolutions' W74 Canister 2.0-4 Renewed Amendment 4 Functional and Operating Limits 2.0 2.0 Functional and Operating Limits
Table 2.1-3 FuelSolutions' W74 Loading Specification W74-3 (2 pages)
W74-3 Payload Configuration Partial UO2 Fuel Assemblies Parameter Limit/Specification
Payload
Description:
< 64 Big Rock Point BWR partial UO2 fuel assemblies, as defined in Table 2.1-7.
Partial fuel assemblies are defined as those assemblies having one or more rods missing from the design basis assembly array. The empty array locations may contain nothing, partial length rods, hollow zircaloy or stainless steel rods, neutron source rods, or any similar non-fissile fuel assembly component that displaces less water than a design fuel rod.
Any remaining empty canister basket guide tubes and/or support tubes may be loaded with fuel assemblies meeting any of the acceptable loading specifications W74-1, W74-2, and W74-4 through W74-6, subject to the limitations of those specifications.
If less than 64 total fuel assemb lies are loaded, a dummy fuel assembly shall be placed into each empty CANISTER basket guide tube. Each dummy fuel assembly shall be the approximate weight and size of the actual fuel being loaded.
Cladding Material/Condition: Zircaloy cladding with no known or suspected cladding defects greater than hairline cracks or pinhole leaks.
Initial Enrichment(1): < 3.55 w/o 235U (missing array interior or edge rods - 9x9)
< 3.6 w/o 235U (missing array interior or edge rods - 11x11)
Burnup: < 40,000 MWd/MTU.
FuelSolutions' W74 Canister 2.0-5 Renewed Amendment 4 Functional and Operating Limits 2.0 2.0 Functional and Operating Limits
Table 2.1-3 FuelSolutions' W74 Loading Specification W74-3 (2 pages)
Cooling Time: > 3.0 years. The minimum acceptable cooling time varies by fuel assembly class and enrichment, as a function of burnup; and is also dependent on the total cobalt content of the fuel and control components. The effects of the maximum acceptable decay heat, initial uranium content, and gamma and neutron sources are incorporated into the minimum cooling time determination. Fuel assemblies shall not be stored with less than the minimum acceptable coo ling time indicated in Table 2.1-9.
Note: (1) Defined as the maximum array average initial enrichment, which is the peak planar average initial enrichment considering all elevations along the assembly axis. The averaging is applied only to those fuel pins that are present in the partial array.
FuelSolutions' W74 Canister 2.0-6 Renewed Amendment 4 Functional and Operating Limits 2.0 2.0 Functional and Operating Limits
Table 2.1-4 FuelSolutions' W74 Loading Specification W74-4
W74-4 Payload Configuration Partial MOX Fuel Assemblies Parameter Limit/Specification
Payload
Description:
< 64 Big Rock Point BWR partial MOX fuel assemblies, as defined in Table 2.1-8. Partial fuel assemblies are defined as those assemblies having one or more rods missing from the design basis assembly array. The empty array locations may contain nothing, partial length rods, hollow zircaloy or stainless steel rods, neutron source rods, or any similar non-fissile fuel assembly component that displaces less water than a design fuel rod. Any remaining empty canister basket guide tubes and/or support tubes may be loaded with fuel assemblies meeting any of the acceptable loading specifications W74-1 through W74-3, W74-5, and W74-6, subject to the limitations of those specifications.
If less than 64 fuel assemblies are loaded, a dummy fuel assembly shall be placed into each empty CANISTER basket guide tube. Each dummy fuel assembly shall be the approximate weight and size of the actual fuel being loaded.
Cladding Material/Condition: Zircaloy cladding with no known or suspected cladding defects greater than hairline cracks or pinhole leaks.
Initial Enrichment: See Table 2.1-8 Burnup: See Table 2.1-8 Cooling Time: See Table 2.1-8
FuelSolutions' W74 Canister 2.0-7 Renewed Amendment 4 Functional and Operating Limits 2.0 2.0 Functional and Operating Limits
Table 2.1-5 FuelSolutions' W74 Loading Specification W74-5 (2 Pages)
W74-5 Payload Configuration Damaged UO2 Fuel Assemblies Parameter Limit/Specification
Payload
Description:
8 Big Rock Point BWR damaged UO2 fuel assemblies.
Damaged fuel assemblies are defined as those with fuel rod damage in excess of hairline cracks or pinhole leaks. Fuel assemblies with damaged grid spacers (defined as damaged to a degree where fuel rod structural integrity cannot be assured, or where grid spacers have shifted vertically from their design position) will also be stored in damaged fuel cans.
Each assembly designated as damaged is placed within a damaged fuel can and loaded into one of the four corner basket support tube locations in the upper and lower basket of the CANISTER. The remaining empty CANISTER basket guide tubes and damaged fuel cans may be loaded with fuel assemblies meeting any of the acceptable loading specifications W74-1 through W74-4 and W74-6, subject to the limitations of those specifications, for a total of 64 Big Rock Point BWR fuel assemblies.
If less than 64 fuel assemblies are loaded, a dummy fuel assembly shall be placed into each empty CANISTER basket guide tube. Each dummy fuel assembly shall be the approximate weight and size of the actual fuel being loaded.
Cladding Material/Condition: Zircaloy cladding with fuel rod damage in excess of hairline cracks or pinhole leaks.
Initial Enrichment(1): 4.61 w/o 235U Burnup: 40,000 MWd/MTU
FuelSolutions' W74 Canister 2.0-8 Renewed Amendment 4 Functional and Operating Limits 2.0 2.0 Functional and Operating Limits
Table 2.1-5 FuelSolutions' W74 Loading Specification W74-5 (2 Pages)
W74-5 Payload Configuration Damaged UO2 Fuel Assemblies Parameter Limit/Specification
Cooling Time: > 3.0 years. The minimum acceptable cooling time varies by fuel assembly class and enrichment, as a function of burnup; and is also dependent on the total cobalt content of the fuel and control components. The effects of the maximum acceptable decay heat, initial uranium content, and gamma and neutron sources are incorporated into the minimum cooling time determination. Fuel assemblies shall not be stored with less than the minimum acceptable cooling time indicated in Table 2.1-9.
Note: (1) Defined as peak pellet enrichment.
FuelSolutions' W74 Canister 2.0-9 Renewed Amendment 4 Functional and Operating Limits 2.0 2.0 Functional and Operating Limits
Table 2.1-6 FuelSolutions' W74 Loading Specification W74-6
W74-6 Payload Configuration Damaged MOX Fuel Assemblies Parameter Limit/Specification
Payload
Description:
8 Big Rock Point BWR damaged MOX fuel assemblies.
Damaged fuel assemblies are defined as those with fuel rod damage in excess of hairline cracks or pinhole leaks. Fuel assemblies with damaged grid spacers (defined as damaged to a degree where fuel rod structural integrity cannot be assured, or where grid spacers have shifted vertically from their design position) will also be stored in damaged fuel cans.
Each assembly designated as damaged is placed within a damaged fuel can and loaded into one of the four corner basket support tube locations in the upper and lower basket of the CANISTER. The remaining empty CANISTER basket guide tubes and damaged fuel cans may be loaded with fuel assemblies meeting any of the acceptable loading specifications W74-1 through W74-5, subject to the limitations of those specifications, for a total of 64 Big Rock Point BWR fuel assemblies.
If less than 64 fuel assemblies are loaded, a dummy fuel assembly shall be placed into each empty CANISTER basket guide tube. Each dummy fuel assembly shall be the approximate weight and size of the actual fuel being loaded.
Cladding Material/Condition: Zircaloy cladding with fuel rod damage in excess of hairline cracks or pinhole leaks.
Initial Enrichment(1): 4.61% based on the formula EU-235 + 0.7 x PPU, where EU-235 is the 235U enrichment of the uranium in the fuel, and PPU is the overall weight percentage of plutonium metal.
Burnup: See Table 2.1-8 Cooling Time: See Table 2.1-8 Note:
(1) Defined as peak pellet enrichment.
FuelSolutions' W74 Canister 2.0-10 Renewed Amendment 4 Functional and Operating Limits 2.0 2.0 Functional and Operating Limits
Table 2.1-7 UO2 Fuel Assemblies Acceptable for Storage in the FuelSolutions' W74 Canister(1)
Maximum Linear Max. Array Uranium Uranium Average Initial Applicable Assembly Assembly Loading Loading Enrichment Cooling Class(2) Type (kg) (kg/in) (w/o 235U) Table(3)
Big Rock 9x9 GE 143 2.04 4.1 W74-1-A Point W74-1-B 9x9 ANF 143 2.04 4.1 W74-1-A W74-1-B
11x11 ANF 143 2.04 4.1 W74-1-A Other(4) W74-1-B
Notes (1) Applicable to fuel specifications W74-1, W74-3, and W74-5.
(2) Assembly Class is defined per EIA Spent Fuel Discharge Report.1
(3) For any versions of these assembly types that contain up to 2.9 grams cobalt in the non-fuel hardware in the core zone, the Applicable Cooling Table is 74-1-A. For any versions of these assembly types that contain more than 2.9 grams cobalt, up to 15 grams cobalt, in the non-fuel hardware in the core zone, the Applicable Cooling Table is 74-1-B. Assemblies with over 15 grams cobalt in the non-fuel hardware in the core zone are not qualified for storage in the W74 canister.
(4) Other fuel assemblies that meet the defined parameters are qualified for storage.
1Energy Information Administration, Spent Nuclear Fuel Discharges from U.S. Reactors 1993, U.S.
Department of Energy, 1995.
FuelSolutions' W74 Canister 2.0-11 Renewed Amendment 4 Functional and Operating Limits 2.0 2.0 Functional and Operating Limits
Table 2.1-8 MOX Fuel Assemblies Acceptable for Storage in the FuelSolutions' W74 Canister(1)
Maximum Heavy Maximum Minimum Metal Maximum Pin Initial Cooling Assembly Assembly Loading Burnup Enrichment Time Class(2) Type (kg) (MWd/MTIHM) (w/o) (years)
Big Rock J2 (9x9)(3) 124 22,820 235U - 4.50 22 Point PuO2 - 3.65 DA (11x11)(3) 126 21,850 235U - 2.40 22 PuO2 - 2.45 G-Pu (11x11)(3) 131 34,200 235U - 4.60 15 PuO2 - 5.45 UO2 (9x9) w/2 (see Table 2.1-7)
MOX rods(4)
Notes:
(1) Applicable to fuel specifications W74-2, W74-4, and W74-6.
(2) Assembly Class is defined per EIA Spent Fuel Discharge Report.
(3) Cobalt content shall be 2.9 g in the active fuel region.
(4) This qualification specifically applies to BRP assemblies E65 and E72.
FuelSolutions' W74 Canister 2.0-12 Renewed Amendment 4 Functional and Operating Limits 2.0 Functional and Operating Limits
Table 2.1-9 Fuel Cooling Table W74-1-A
APPLICABILITY:
Canister: FuelSolutions' W74-M and W74-T Canisters Loading Specification: W74-1, W74-3, and W74-5
Description:
Up to 64 fuel assemblies SNF Assemblies: Valid for all BRP assemblies as indicated in Table 2.1-7.
Cobalt Content: 2.9 g in active fuel region (low-cobalt)
QUALIFICATION BASES:
Storage Cask Dose Rate 50 mrem/hr Canister Heat Load 24.8 kW/Canister, and 0.216 kW/inch-Canister Maximum Required Minimum Cooling Time (yr.)(1,2)
Burnup Minimum Initial Enrichment (w/o 235U)
(MWd/MTU)(1) 1.5 2.0 2.5 3.0 3.5 4.0
15,000 3.2 3.1 3.1 3.0 3.0 3.0 20,000 3.4 3.3 3.2 3.2 3.1 3.1 25,000 3.6 3.5 3.4 3.4 3.3 3.3 30,000 3.9 3.8 3.6 3.6 3.5 3.4 32,000 3.9 3.8 3.7 3.6 3.5 3.5 34,000 4.2 3.9 3.8 3.7 3.6 3.6 36,000 4.8 4.4 4.1 3.9 3.8 3.7 38,000 5.2 4.8 4.5 4.2 4.0 3.9 40,000 5.6 5.3 4.9 4.6 4.3 4.1
Notes:
(1) Rounding: round up to next highest burnup, round down to next lowest enrichment.
(2) Enrichments less than 1.5% or greater than the criticality limit presented in Section 6.1 of the FuelSolutions' W74 Canister Storage SAR are not qualified.
FuelSolutions' W74 Canister 2.0-13 Renewed Amendment 4 Functional and Operating Limits 2.0 Functional and Operating Limits
Table 2.1-10 Fuel Cooling Table W74-1-B
APPLICABILITY:
Canister: FuelSolutions' W74-M and W74-T Canisters Loading Specification: W74-1, W74-3, and W74-5
Description:
Up to 64 fuel assemblies SNF Assemblies: Valid for all BRP assemblies as indicated in Table 2.1-7.
Cobalt Content: 15.0 g in active fuel region (high-cobalt)
QUALIFICATION BASES:
Storage Cask Dose Rate 50 mrem/hr Canister Heat Load 24.8 kW/Canister, and 0.216 kW/inch-Canister Maximum Required Minimum Cooling Time (yr.)
Burnup Minimum Initial Enrichment (w/o 235U)(1,2)
(MWd/MTU)(1) 1.5 2.0 2.5 3.0 3.5 4.0
15,000 4.2 4.0 3.9 3.8 3.8 3.7 20,000 4.7 4.3 4.2 4.1 4.0 3.9 25,000 5.2 4.9 4.8 4.6 4.5 4.4 30,000 5.8 5.6 5.1 4.9 4.8 4.7 32,000 6.0 5.8 5.3 5.1 5.0 4.9 34,000 6.4 6.2 5.5 5.4 5.2 5.1 36,000 6.5 6.2 6.0 5.5 5.4 5.3 38,000 6.8 6.6 6.4 5.8 5.6 5.5 40,000 7.0 6.8 6.6 5.8 5.6 5.5
Notes:
(1) Rounding: round up to next highest burnup, round down to next lowest enrichment.
(2) Enrichments less than 1.5% or greater than the criticality limit presented in Section 6.1 of the FuelSolutions' W74 Canister Storage SAR are not qualified.
FuelSolutions' W74 Canister 2.0-14 Renewed Amendment 4 LCO Applicability 3.0 3.0 LIMITING CONDITION FOR OPERATION (LCO) APPLICABILITY LCO 3.0.1 LCOs shall be met during specified conditions in the Applicability, except as provided in LCO 3.0.2.
LCO 3.0.2 Upon discovery of a failure to meet an LCO, the Required Actions of the associated Conditions shall be met, except as provided in LCO 3.0.5.
If the LCO is met or is no longer applicable prior to expiration of the specified Completion Time(s), completion of the Re quired Action(s) is not required, unless otherwise stated.
LCO 3.0.3 Not applicable to an SFSS.
LCO 3.0.4 When an LCO is not met, entry into a specified condition in the Applicability shall not be made except when the associated ACTIONS to be entered permit continued operation in the specified condition in the Applicability for an unlimited period of time. This Specifi cation shall not prevent changes in specified conditions in the Applicability that are required to comply with ACTIONS or that are related to the unloading of a CANISTER.
LCO 3.0.5 Equipment removed from service or not in service in compliance with ACTIONS may be returned to service under administrative control solely to perform testing required to demonstrate it meets the LCO or that other equipment meets the LCO.
This is an exception to LCO 3.0.2 for the system returned to service under administrative control to perform the testing.
LCO 3.0.6 Not applicable to an SFSS.
LCO 3.0.7 Not applicable to an SFSS.
FuelSolutions' W74 Canister 3.0-1 Renewed Amendment 4 LCO Applicability 3.0 3.0 SURVEILLANCE REQUIREMENT (SR) APPLICABILITY
SR 3.0.1 SRs shall be met during the specified conditions in the Applicability for individual LCOs, unless otherwise stated in the SR. Failure to meet a Surveillance, whether such failure is experienced during the performance of the Surveillance or between performances of the Surveillance, shall be failure to meet the LCO. Failure to perform a Surveillan ce within the specified Frequency shall be failure to meet the LCO except as provided in SR 3.0.3. Surveillances do not have to be performed on equipment or variables outside specified limits.
SR 3.0.2 The specified Frequency for each SR is met if the Surveillance is performed within 1.25 times the interval specified in the Frequency, as measured from the previous performance or a measured from the time a specified condition of the Frequency is met.
For Frequencies specified as once, the above interval extension does not apply.
If a Completion Time requires periodic performance on a once per basis, the above Frequency extension applies to each performance after the initial performance.
Exceptions to this Specification are stated in the individual Specifications.
SR 3.0.3 If it is discovered that a Surveillance was not performed within its specified Frequency, then compliance with the requirement to declare the LCO not met may be delayed, from the time of discovery, up to 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> or up to the limit of the specified Frequency, whichever is less. This delay period is permitted to allow performance of the Surveillance.
If the Surveillance is not performed within the delay period, the LCO must immediately be declared not met, and the applicable Condition(s) must be entered.
When the Surveillance is performed within the delay period and the Surveillance is not met, the LCO must immediately be declared not met, and the applicable Condition(s) must be entered.
SR 3.0.4 Entry into a specified condition in th e Applicability of an LCO shall not be made unless the LCOs Surveillances have been met within their specified Frequency.
This provision shall not prevent entry into specified conditions in the Applicability that are required to comply with ACTIONS or that are related to the unloading of a CANISTER.
FuelSolutions' W74 Canister 3.0-2 Renewed Amendment 4 W74 Canister Helium Backfill Density 3.1.1 3.1 CANISTER INTEGRITY 3.1.1 W74 Canister Helium Backfill Density
LCO 3.1.1 The CANISTER helium backfill density shall be in the range of 0.0376 +/- 0.0010 g-moles/liter.
APPLICABILITY: During LOADING OPERATIONS.
ACTIONS
NOTE Separate Condition entry is allowed for each CANISTER.
COMPLETION CONDITION REQUIRED ACTION TIME A. CANISTER helium A.1 Establish CANISTER helium 48 hours5.555556e-4 days <br />0.0133 hours <br />7.936508e-5 weeks <br />1.8264e-5 months <br /> backfill quantity limit is backfill quantity within limit.
not met.
B. Required Action and B.1 Remove all fuel assemblies 30 days associated Completion from CANISTER.
Time are not met.
SURVEILLANCE REQUIREMENTS
NOTE The helium used for backfill shall have a minimum purity of 99.995%.
SURVEILLANCE FREQUENCY
SR 3.1.1.1 Verify CANISTER helium backfill quantity is Within 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> after within limit. verifying CANISTER cavity vacuum drying pressure is within limit.
FuelSolutions' W74 Canister 3.1-1 Renewed Amendment 4 Canister Vacuum Drying Pressure 3.1.2 3.1 CANISTER INTEGRITY 3.1.2 Canister Vacuum Drying Pressure
See the Storage System Technical Specification for the applicable LCO.
FuelSolutions' W74 Canister 3.1-2 Renewed Amendment 4 Canister Leak Rate 3.1.3 3.1 CANISTER INTEGRITY 3.1.3 Canister Leak Rate
See the Storage System Technical Specification for the applicable LCO.
FuelSolutions' W74 Canister 3.1-3 Renewed Amendment 4 Hydraulic Ram Force During Horizontal Canister Transfer 3.1.4 3.1 CANISTER INTEGRITY 3.1.4 Hydraulic Ram Force During Horizontal Canister Transfer
See the Storage System Technical Specification for the applicable LCO.
FuelSolutions' W74 Canister 3.1-4 Renewed Amendment 4 W74 Canister Vertical Time Limit in Transfer Cask 3.1.5 3.1 CANISTER INTEGRITY 3.1.5 W74 Canister Vertical Time Limit in Transfer Cask
LCO 3.1.5 For vertical TRANSFER OPERATIONS, the CANISTER transfer out of the TRANSFER CASK shall be completed within 8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br /> after draining the annulus water from the TRANSFER CASK. For horizontal TRANSFER OPERATIONS, the movement of the TRANSFER CASK to the horizontal position on the transfer trailer shall be completed within 8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br /> after draining the annulus water from the TRANSFER CASK.
APPLICABILITY: During TRANSFER OPERATIONS.
ACTIONS
NOTE Separate Condition entry is allowed for each CANISTER.
COMPLETION CONDITION REQUIRED ACTION TIME A. CANISTER time limit in A.1 Fill annulus with water. 7 hours8.101852e-5 days <br />0.00194 hours <br />1.157407e-5 weeks <br />2.6635e-6 months <br />.
drained annulus TRANSFER CASK is not met. AND A.2 Maintain filled annulus. 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />.
SURVEILLANCE REQUIREMENTS
SURVEILLANCE FREQUENCY
SR 3.1.5.1 Verify TRANSFER CASK operations with Within 8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br /> after CANISTER in vertical orientation and annulus completion of drained are completed within time limit. TRANSFER CASK/
CANISTER annulus draining.
FuelSolutions' W74 Canister 3.1-5 Renewed Amendment 4 Canister Surface Contamination 3.2.1 3.2 CANISTER RADIATION PROTECTION 3.2.1 Canister Surface Contamination
See the Storage System Technical Specification for the applicable LCO.
FuelSolutions' W74 Canister 3.2-1 Renewed Amendment 4 (Deleted) 3.3.1 3.3 STORAGE CASK INTEGRITY 3.3.1 (Deleted)
FuelSolutions' W74 Canister 3.3-1 Renewed Amendment 4 Storage Cask Periodic Monitoring 3.3.2 3.3 STORAGE CASK INTEGRITY 3.3.2 Storage Cask Periodic Monitoring
LCO 3.3.2 The inlet and outlet vent screens of a STORAGE CASK with a W74 CANISTER containing fuel assemblies shall be visibly free of blockage or damage.
OR The temperature of a STORAGE CASK with a W74 CANISTER containing fuel assemblies, as indicated by the liner thermocouple, shall meet the temperature limit established by the storage cask periodic monitoring program.
APPLICABILITY: During STORAGE OPERATIONS.
ACTIONS NOTE Separate Condition entry is allowed for each STORAGE CASK.
COMPLETION CONDITION REQUIRED ACTION TIME A. LCO 3.3.2 not met. A.1 If vent blockage is identified 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> during visual inspection of vent screens, clear vent screens of blockage.
AND A.2.1 If vent damage is identified 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> during visual inspection of vent screens, remove the damaged vent screen(s).
AND A.2.2.1 If vent damage significantly 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> reduces flow area but does not increase access to vent channels, repair or replace the damaged vent screen(s).
OR (continued)
FuelSolutions' W74 Canister 3.3-2 Renewed Amendment 4 Storage Cask Periodic Monitoring 3.3.2 3.3.2 Storage Cask Periodic Monitoring
COMPLETION CONDITION REQUIRED ACTION TIME A.2.2.2 If vent damage increases 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> access to vent channels, perform visual inspection of vent channel, clear any debris or obstructions found, and repair or replace the damaged vent screen(s).
AND A.2.3 Attach the repaired or 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> replacement vent screen(s) to the STORAGE CASK.
OR A.3.1 If the liner thermocouple 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> temperature exceeds the allowable temperature limit, check the STORAGE CASK inlet and outlet vent screens for blockage or damage.
AND A.3.2.1 If vents are blocked or In accordance with damaged, perform ACTIONS A.1 and ACTIONS A.1 and A.2, as A.2.
required.
OR A.3.2.2.1 If vents are not blocked 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> or damaged, check the liner thermocouple and related instrumentation to assure it is functioning properly.
AND A.3.2.2.2 Repair or replace 48 hours5.555556e-4 days <br />0.0133 hours <br />7.936508e-5 weeks <br />1.8264e-5 months <br /> thermocouple and related instrumentation as necessary.
AND (continued)
FuelSolutions' W74 Canister 3.3-3 Renewed Amendment 4 Storage Cask Periodic Monitoring 3.3.2 3.3.2 Storage Cask Periodic Monitoring
COMPLETION CONDITION REQUIRED ACTION TIME A.3.3 Verify STORAGE CASK 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br /> temperature returns to within the local concrete long-term temperature limit of 200°F.
AND A.3.4 Verify STORAGE CASK 192 hours0.00222 days <br />0.0533 hours <br />3.174603e-4 weeks <br />7.3056e-5 months <br /> temperature returns to within the applicable temperature limit from the storage cask periodic monitoring program B. Required Actions and B.1 Initiate actions to cool the 96 hours0.00111 days <br />0.0267 hours <br />1.587302e-4 weeks <br />3.6528e-5 months <br /> associated Completion cask to within the limit.
Times are not met. AND B.2.1 Visually inspect the interior of 96 hours0.00111 days <br />0.0267 hours <br />1.587302e-4 weeks <br />3.6528e-5 months <br /> the STORAGE CASK for ventilation obstructions using remote inspection tools or by temporarily removing the STORAGE CASK top cover.
AND B.2.2.1 Remove ventilation 96 hours0.00111 days <br />0.0267 hours <br />1.587302e-4 weeks <br />3.6528e-5 months <br /> obstructions.
AND B.2.2.2 Verify STORAGE CASK 96 hours0.00111 days <br />0.0267 hours <br />1.587302e-4 weeks <br />3.6528e-5 months <br /> temperature returns to within the local concrete long-term temperature limit of 200°F.
AND B.2.2.3 Verify STORAGE CASK 192 hours0.00222 days <br />0.0533 hours <br />3.174603e-4 weeks <br />7.3056e-5 months <br /> temperature returns to within the applicalbe limit from the storage cask periodic monitoring program.
OR (continued)
FuelSolutions' W74 Canister 3.3-4 Renewed Amendment 4 Storage Cask Periodic Monitoring 3.3.2 3.3.2 Storage Cask Periodic Monitoring
COMPLETION CONDITION REQUIRED ACTION TIME B.2.3.1 Return CANISTER to TRANSFER CASK. 30 days AND B.2.3.2 Return CANISTER to 270 days repaired or replacement STORAGE CASK.
SURVEILLANCE REQUIREMENTS SURVEILLANCE FREQUENCY SR 3.3.2.1 Visually inspect all four inlet screens and all four Based on storage outlet screens for each loaded STORAGE CASK. cask periodic OR monitoring program.
Verify that the STORAGE CASK temperatures are within limit.
NOTE
STORAGE CASK temperatures are expected to vary slightly between successive measurements due to changes in the ambient temperature. This is acceptable as long as the temperatures remain within the specified limit.
FuelSolutions' W74 Canister 3.3-5 Renewed Amendment 4 Storage Cask Temperatures During Horizontal Transfer 3.3.3 3.3 STORAGE CASK INTEGRITY 3.3.3 Storage Cask Temperatures During Horizontal Transfer
LCO 3.3.3 The measured temperature of a STORAGE CASK with a W74 CANISTER containing fuel assemblies, as indicated by the liner thermocouple, shall not exceed 185°F (85°C).
APPLICABILITY: During TRANSFER OPERATIONS.
ACTIONS NOTE Separate Condition entry is allowed for each STORAGE CASK.
COMPLETION CONDITION REQUIRED ACTION TIME A. STORAGE CASK A.1 Transfer the CANISTER 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> concrete temperature limit into the TRANSFER CASK.
is not met.
B. Required Action A.1 and B.1 Inspect the STORAGE 5 days associated Completion CASK for damage.
Times are not met. AND
B.2.1 If no damage, transfer 7 days CANISTER to STORAGE CASK.
OR B.2.2 If damaged, transfer 21 days CANISTER to new STORAGE CASK.
C. Required Actions B.1 C.1 Return CANISTER to 30 days and B.2-1 or B.1 and TRANSFER CASK.
B.2.2 and associated AND Completion Times are C.2 Return CANISTER to not met. 270 days repaired or replacement STORAGE CASK.
FuelSolutions' W74 Canister 3.3-6 Renewed Amendment 4 Storage Cask Temperatures During Horizontal Transfer 3.3.3 3.3.3 Storage Cask Temperatures During Horizontal Transfer
SURVEILLANCE REQUIREMENTS
SURVEILLANCE FREQUENCY SR 3.3.3.1 After the STORAGE CASK is downended to 30 minutes the horizontal orientation, monitor and record STORAGE CASK concrete temperature as indicated by the STORAGE CASK liner thermocouple.
FuelSolutions' W74 Canister 3.3-7 Renewed Amendment 4 Transfer Cask Structural Shell Temperature 3.4.1 3.4 TRANSFER CASK INTEGRITY 3.4.1 Transfer Cask Structural Shell Temperature
See the Storage System Technical Specification for the applicable LCO.
FuelSolutions' W74 Canister 3.4-1 Renewed Amendment 4 Transfer Cask Surface Contamination 3.5.1 3.5 TRANSFER CASK RADIATION PROTECTION 3.5.1 Transfer Cask Surface Contamination
See the Storage System Technical Specification for the applicable LCO.
FuelSolutions' W74 Canister 3.5-1 Renewed Amendment 4 Design Features 4.0 4.0 DESIGN FEATURES
The specifications in this section include the de sign characteristics of special importance to each of the physical barriers and the maintenance of safety margins in the storage system component design. The principal objective of this category is to describe the design envelope which might constrain any physical changes to essential equipment. Included in this category are the site environmental parameters which provide the base s for design, but are not inherently suited for description as LCOs.
4.1 Storage System 4.1.1 Storage Cask 4.1.1.1 Structural Performance See the Storage System Technical Specification Section 4.1.1.1 for discussion of STORAGE CASK structural performance features.
4.1.1.2 Codes and Standards See the Storage System Technical Specification Section 4.1.1.2 for discussion of codes and standards applicable to the STORAGE CASK.
4.1.1.3 Fabrication Exceptions to Codes, Standards, and Criteria See the Storage System Technical Specification Section 4.1.1.3 for discussion of exceptions to codes, standards, and criteria.
4.1.2 Transfer Cask 4.1.2.1 Structural Performance See the Storage System Technical Specification Section 4.1.2.1 for discussion of TRANSFER CASK structural performance features.
4.1.2.2 Codes and Standards See the Storage System Technical Specification Section 4.1.2.2 for discussion of codes and standards applicable to the TRANSFER CASK.
4.1.2.3 Fabrication Exceptions to Codes, Standards, and Criteria See the Storage System Technical Specification Section 4.1.2.3 for discussion of exceptions to codes, standards, and criteria.
4.1.3 Canister 4.1.3.1 Criticality The design of the W74 CANISTER, including spatial constraints on adjacent assemblies (minimum basket cell opening of 6.85 inches square) and the boron content of the basket neutron absorber material (minimum 3.1 mg/cm2 B-10) shall ensure that fuel assemblies are maintained in a subcritical condition with a keff less than 0.95 under all conditions of operation.
FuelSolutions' W74 Canister 4.0-1 Renewed Amendment 4 Design Features 4.0 4.0 Design Features
4.1.3.2 Structural Performance The CANISTER has been evaluated for a side drop resulting in a lateral gravitational (g) loading of 60 g and an end drop resulting in an axial gravitational loading of 50 g.
The maximum weight of a loaded, dried, and sealed W74 CANISTER is 85,000 pounds. The maximum CANISTER weight includes 32 SFAs in each basket, plus four damaged fuel cans at the support tube locations in each basket.
The W74 CANISTER thermal rating of 26.4 kW is determined by the minimum heat load qualification in th e STORAGE and TRANSFER CASKS.
4.1.3.3 Codes and Standards The FuelSolutions' W74 CANISTER shell structural components are designed in accordance with Subsection NB of the ASME Code, and the basket structural components are designed in accordance with Subsection NG of the ASME Code.
Exceptions to the code are listed in Table 4.1-1.
4.1.3.4 Fabrication Exceptions to Codes, Standards, and Criteria Proposed alternatives to Subsections NB and NG of the ASME Code, including exceptions allowed by Section 4.1.3.3, may be used when authorized by the Director of the Office of Nuclear Material Safety and Safeguards or Designee.
The applicant should demonstrate that:
- 1. The proposed alternatives would provide an acceptable level of quality and safety, or
- 2. Compliance with the specified requirements of ASME Code,Section III, would result in hardship or unusual di fficulty without a compensating increase in the level of quality and safety.
Requests for exception in accordance with this section should be submitted in accordance with 10CFR72.4.
4.2 Storage Pad Constraints on the storage pad are discussed in Section 4.2 of the Storage System Technical Specification.
4.3 Site Specific Parameters and Analyses See the Storage System Technical Specification Section 4.3 for discussion of site specific parameters and analyses.
FuelSolutions' W74 Canister 4.0-2 Renewed Amendment 4
Administrative Controls 5.0 5.0 ADMINISTRATIVE CONTROLS
5.1 Training Modules See the Storage System Technical Specification for the applicable information.
5.2 Preoperational Testing and Training Exercises See the Storage System Technical Specification for the applicable information.
5.3 Programs 5.3.1-5.3.5 See the Storage System Technical Specification for the applicable information.
5.3.6 Vacuum Drying Program The FuelSolutions' W74 CANISTER has been evaluated for allowable fuel cladding temperature during LOADING and STORAGE OPERATIONS. During LOADING OPERATIONS, the fuel cladding temperature is limited to 400°C to assure cladding integrity.
This program shall establish administrative controls and procedures to assure that the spent fuel cladding does not exceed the temperature limit during LOADING OPERATIONS. For a CANISTER loaded with fuel with a total heat load of 24.8 kW, the initial vacuum drying cycle shall be limited to 7 hours8.101852e-5 days <br />0.00194 hours <br />1.157407e-5 weeks <br />2.6635e-6 months <br />. If the vacuum drying LCO 3.1.2 has not been satisfied, the CANISTER shall be backfilled with helium for 4 hours4.62963e-5 days <br />0.00111 hours <br />6.613757e-6 weeks <br />1.522e-6 months <br />, vacuum dried for 4 hours4.62963e-5 days <br />0.00111 hours <br />6.613757e-6 weeks <br />1.522e-6 months <br />, backfilled for 4 hours4.62963e-5 days <br />0.00111 hours <br />6.613757e-6 weeks <br />1.522e-6 months <br />, etc., until the LCO is met.
For a heat load of 12.2 kW or lower, there is no time limit on the initial vacuum drying cycle.
For heat loads greater than 12.2 kW but less than 24.8 kW, the program shall either use the 24.8 kW requirements, or establish suitable time limits to maintain the cladding temperature to less than or equal to 400°C for the specific CANISTER heat load.
5.3.7 Cladding Oxide Thickness Measurement Program Not applicable for the W74 CANISTER.
5.3.8 Storage Cask Periodic Monitoring Program See the Storage System Technical Specification for the applicable information.
5.3.9 Aging Management Program See the Storage System Technical Specification for the applicable information.
5.4 Special Requirements for First System in Place The heat transfer characteristics of the cask system will be recorded by temperature measurements of the first STORAGE CASK placed in service with a heat load equal to or greater than 10kW. In accordance with 10CFR72.4, a letter report summarizing the results of the measurements shall be submitted to the NRC.
For each cask subsequently loaded with a higher heat load (up to the 24.8 kW limit), the calculation and measured temperature data shall be reported to the NRC at every 2 kW increase.
The calculation and comparison need not be reported to the NRC for STORAGE CASKS that are subsequently loaded with lesser loads then the latest reported case.
Cask users may satisfy these requirements by referencing validation test reports submitted to the NRC by other users.
FuelSolutions' W74 Canister 5.0-1 Renewed Amendment 4