Text

Conditions for Cask Use and Technical Specifications, Renewed Amendment 2 - Appendix a & B
	ML24151A010
Person / Time
Site:	07201015
Issue date:	06/11/2024
From:	; Storage and Transportation Licensing Branch
To:	; NAC International
References
	Download: ML24151A010 (1)
	v • d • e

APPENDIX A

TECHNICAL SPECIFICATIONS FOR THE NAC-UMS SYSTEM

AMENDMENT NO. 2

Certificate of Compliance No. 1015 A-1Renewed Amendment No. 2 Table of Contents

A 1.0 USE AND APPLICATION..........................................................................................A1-1 A 1.1 Definitions......................................................................................................... A1-1 A 1.2 Logical Connectors...........................................................................................A1-7 A 1.3 Completion Times........................................................................................... A1-10 A 1.4 Frequency....................................................................................................... A1-15

A 2.0 [Reserved].................................................................................................................A2-1

A 3.0 LIMITING CONDITION FOR OPERATION (LCO) APPLICABILITY.......................... A3-1 SURVEILLANCE REQUIREMENT (SR) APPLICABILITY......................................... A3-2 A 3.1 NAC-UMS SYSTEM Integrity..........................................................................A3-4 A 3.1.1 CANISTER Maximum Time in Vacuum Drying................................ A3-4 A 3.1.2 CANISTER Vacuum Drying Pressure.............................................. A3-6 A 3.1.3 CANISTER Helium Backfill Pressure............................................... A3-7 A 3.1.4 CANISTER Maximum Time in TRANSFER CASK........................... A3-8 A 3.1.5 CANISTER Helium Leak Rate....................................................... A3-10 A 3.1.6 CONCRETE CASK Heat Removal System.................................... A3-11 A 3.1.7 CANISTER Removal from the CONCRETE CASK........................ A3-13 A 3.2 NAC-UMS SYSTEM Radiation Protection..................................................... A3 -16 A 3.2.1 CANISTER Surface Contamination............................................... A3-16 A 3.2.2 CONCRETE CASK Average Surface Dose Rate........................... A3-18

Figure A3-1 CONCRETE CASK Surface Dose Rate Measurement.............................. A3-20

A 4.0 [Reserved].................................................................................................................A4-1

A 5.0 ADMINISTRATIVE CONTROLS AND PROGRAMS.................................................. A5-1 A 5.1 Training Program.............................................................................................. A5-1 A 5.2 Pre-Operational Testing and Training Exercises............................................... A5-1 A 5.3 Special Requirements for the First System Placed in Service........................... A5-2 A 5.4 Surveillance After an Off-Normal, Accident, or Natural Phenomena Event............................................................................................ A5-2

Certificate of Compliance No. 1015 A-2 Renewed Amendment No. 2 Appendix A Table of Contents (Continued)

A 5.5 Radioactive Effluent Control Program............................................................... A5-3 A 5.6 NAC-UMS SYSTEM Transport Evaluation Program........................................ A5-3 A 5.7 Verification of Oxide Layer Thickness on High Burnup Fuel.............................. A5-4 A 5.8 Aging Management Program.............................................................................A5-5

Table A5-1 TRANSFER CASK and CONCRETE CASK Lifting Requirements.............. A5-5

Certificate of Compliance No. 1015 A-3Renewed Amendment No. 2 THIS PAGE INTENTIONALLY LEFT BLANK Definitions A 1.1 A 1.0 USE AND APPLICATION A 1.1 Definitions

NOTE------------------------------------------------

The defined terms of this section appear in capitalized type and are applicable throughout this section.

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 See TRANSPORTABLE STORAGE CANISTER CANISTER HANDLING FACILITY The CANISTER HANDLING FACILITY includes the following components and equipment: (1) a canister transfer station that allows the staging of the TRANSFER CASK with the CONCRETE CASK or transport cask to facilitate CANISTER lifts involving spent fuel handling not covered by 10 CFR 50; and (2) either a stationary lift device or mobile lifting device used to lift the TRANSFER CASK and CANISTER.

CONCRETE CASK See VERTICAL CONCRETE CASK INDEPENDENT SPENT FUEL The facility within the perimeter fence licensed for STORAGE INSTALLATION storage of spent fuel within NAC-UMS SYSTEMs (ISFSI) (see also 10 CFR 72.3).

INTACT FUEL A fuel assembly or fuel rod with no fuel rod cladding (ASSEMBLY OR ROD) defects, or with known or suspected fuel rod (Undamaged Fuel) cladding defects not greater than pinhole leaks or hairline cracks.

(continued)

Certificate of Compliance No. 1015 A1-1 Renewed Amendment No. 2 Definitions A 1.1

LOADING OPERATIONS LOADING OPERATIONS include all licensed activities on an NAC-UMS SYSTEM 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 NAC-UMS SYSTEM is secured on the transporter.

LOADING OPERATIONS do not include post-storage operations, i.e., CANISTER transfer operations between the TRANSFER CASK and the CONCRETE CASK or transport cask after STORAGE OPERATIONS.

INITIAL PEAK PLANAR-AVERAGE THE INITIAL PEAK PLANAR-AVERAGE ENRICHMENT ENRICHMENT is the maximum planar-average enrichment at any height along the axis of the fuel assembly. The 4.0 wt % 235U enrichment limit for BW R fuel applies along the full axial extent of the assembly. The INITIAL PEAK PLANAR-AVERAGE ENRICHMENT may be higher than the bundle (assembly) average enrichment.

NAC-UMS SYSTEM NAC-UMS SYSTEM includes the components approved for loading and storage of spent fuel assemblies at the ISFSI. The NAC-UMS SYSTEM consists of a CONCRETE CASK, a TRANSFER CASK, and a CANISTER.

OPERABLE The CONCRETE CASK heat removal system is OPERABLE if the difference between the ISFSI ambient temperature and the average outlet air temperature is £ 102°F for the PW R CANISTER or £ 92°F for the BW R CANISTER.

(continued)

Certificate of Compliance No. 1015 A1-2 Renewed Amendment No. 2 Definitions A 1.1

STORAGE OPERATIONS STORAGE OPERATIONS include all licensed activities that are performed at the ISFSI, while an NAC-UMS SYSTEM containing spent fuel is located on the storage pad within the ISFSI perimeter.

TRANSFER CASK TRANSFER CASK is a shielded lifting device that holds the CANISTER during LOADING and UNLOADING OPERATIONS and during closure welding, vacuum drying, leak testing, and non-destructive examination of the CANISTER closure welds. The TRANSFER CASK is also used to transfer the CANISTER into and from the CONCRETE CASK and into the transport cask.

TRANSPORT OPERATIONS TRANSPORT OPERATIONS include all licensed activities involved in moving a loaded NAC-UMS CONCRETE CASK and CANISTER to and from the ISFSI. TRANSPORT OPERATIONS begin when the NAC-UMS SYSTEM is first secured on the transporter and end when the NAC-UMS SYSTEM is at its destination and no longer secured on the transporter.

TRANSPORTABLE STORAGE TRANSPORTABLE STORAGE CANISTER is the CANISTER (CANISTER) sealed container that consists of a tube and disk fuel basket in a cylindrical canister shell that is welded to a baseplate, shield lid with welded port covers, and structural lid. The CANISTER provides the confinement boundary for the confined spent fuel.

TRANSFER OPERATIONS TRANSFER OPERATIONS include all licensed activities involved in transferring a loaded CANISTER from a CONCRETE CASK to another CONCRETE CASK or to a TRANSPORT CASK.

(continued)

Certificate of Compliance No. 1015 A1-3Renewed Amendment No. 2 Definitions A 1.1

UNLOADING OPERATIONS UNLOADING OPERATIONS include all licensed activities on a NAC-UMS SYSTEM to be unloaded of the contained fuel assemblies. UNLOADING OPERATIONS begin when the NAC-UMS SYSTEM is no longer secured on the transporter and end when the last fuel assembly is removed from the NAC-UMS SYSTEM.

VERTICAL CONCRETE CASK VERTICAL CONCRETE CASK is the cask that (CONCRETE CASK) receives and holds the sealed CANISTER. It provides the gamma and neutron shielding and convective cooling of the spent fuel confined in the CANISTER.

STANDARD FUEL Irradiated fuel assemblies having the sameconfiguration as when originally fabricated consisting

generally of the end fittings, fuel rods, guide tubes, and integral hardware. For BW R fuel, the channel is considered to be integral hardware. The design basis fuel characteristics and analysis are based on the STANDARD FUEL configuration.

DAMAGED FUEL A fuel assembly or fuel rod with known or suspectedcladding defects greater than pinhole leaks or

hairline cracks.

DAMAGED FUEL must be placed in a MAINE YANKEE FUEL CAN.

(continued)

Certificate of Compliance No. 1015 A1-4 Renewed Amendment No. 2 Definitions A 1.1

HIGH BURNUP FUEL A fuel assembly having a burnup between 45,000 and 50,000 MW D/MTU, which must be preferentially loaded in periphery positions of the basket.

An intact HIGH BURNUP FUEL assembly in which no more than 1% of the fuel rods in the assembly have a peak cladding oxide thickness greater than 80 microns, and in which no more than 3% of the fuel rods in the assembly have a peak oxide layer thickness greater than 70 microns, as determined by measurement and statistical analysis, may be stored as INTACT FUEL.

HIGH BURNUP FUEL assemblies not meeting the cladding oxide thickness criteria for INTACT FUEL or that have an oxide layer that has become detached or spalled from the cladding are stored as DAMAGED FUEL in a MAINE YANKEE FUEL CAN.

FUEL DEBRIS An intact or a partial fuel rod or an individual intact or partial fuel pellet not contained in a fuel rod. Fuel debris is inserted into a 9 x 9 array of tubes in a lattice that has approximately the same dimensions as a standard fuel assembly. FUEL DEBRIS is stored in a MAINE YANKEE FUEL CAN.

CONSOLIDATED FUEL A nonstandard fuel configuration in which the individual fuel rods from one or more fuel assemblies are placed in a single container or a lattice structure that is similar to a fuel assembly. CONSOLIDATED FUEL is stored in a MAINE YANKEE FUEL CAN.

(continued)

Certificate of Compliance No. 1015 A1-5 Renewed Amendment No. 2 Definitions A 1.1

SITE SPECIFIC FUEL Spent fuel configurations that are unique to a site orreactor due to the addition of other components or

reconfiguration of the fuel assembly at the site. It includes fuel assemblies, which hold nonfuel-bearing components, such as control components or instrument and plug thimbles, or which are modified as required by expediency in reactor operations, research and development or testing. Modification may consist of individual fuel rod removal, fuel rod replacement of similar or dissimilar material or enrichment, the installation, removal or replacement of burnable poison rods, or containerizing damaged fuel.

Site specific fuel includes irradiated fuel assemblies designed with variable enrichments and/or axial blankets, fuel that is consolidated and fuel that exceeds design basis fuel parameters.

MAINE YANKEE FUEL CAN A specially designed stainless steel screened can sized to hold INTACT FUEL, CONSOLIDATED FUEL, DAMAGED FUEL or FUEL DEBRIS. The screens preclude the release of gross particulate from the can into the canister cavity. The MAINE YANKEE FUEL CAN may only be loaded in a Class 1 canister.

Certificate of Compliance No. 1015 A1-6 Renewed Amendment No. 2 Logical Connectors A 1.2 A 1.0 USE AND APPLICATION

A 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 Technical Specifications 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 number assigned to a Required 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.

W hen logical connectors are used to state a Condition, Completion Time, Surveillance, or Frequency, only the first level of logic is used; the logical connector is left justified with the statement of the Condition, Completion Time, Surveillance, or Frequency.

(continued)

Certificate of Compliance No. 1015 A1-7Renewed Amendment No. 2 Logical Connectors A 1.2

EXAMPLES The following examples illustrate the use of logical connectors.

EXAMPLES EXAMPLE 1.2-1 ACTIONS

CONDITION REQUIRED ACTION COMPLETION 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.

(continued)

Certificate of Compliance No. 1015 A1-8 Renewed Amendment No. 2 Logical Connectors A 1.2

EXAMPLES EXAMPLE 1.2-2 (continued)

ACTIONS

CONDITION REQUIRED ACTION COMPLETION TIME

A. LCO not met A.1 Stop...

OR

A.2.1 Verify...

AND

A.2.2

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 indicated that A.2.2.1 and A.2.2.2 are alternative choices, only one of which must be performed.

Certificate of Compliance No. 1015 A1-9 Renewed Amendment No. 2 Completion Times A 1.3 A 1.0 USE AND APPLICATION

A 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 Operations (LCOs) specify the lowest functional capability or performance levels of equipment required for safe operation of the NAC-UMS SYSTEM. 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, provided that the NAC-UMS SYSTEM is in a specified Condition stated in the Applicability of the LCO. Prior to the expiration of the specified Completion Time, Required Actions must be completed. An ACTIONS Condition remains in effect and the Required Actions apply until the Condition no longer exists or the NAC-UMS SYSTEM 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.

(continued)

Certificate of Compliance No. 1015 A1-10 Renewed Amendment No. 2 Completion Times A 1.3

EXAMPLES The following examples illustrate the use of Completion Times with different types of Conditions and changing Conditions.

EXAMPLE 1.3-1

ACTIONS

CONDITION REQUIRED ACTION COMPLETION TIME

B. Required Action B.1 Perform Action B.1 12 hours1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months and associated Completion AND Time not met B.2 Perform Action B.2 36 hours4.166667e-4 days 0.01 hours 5.952381e-5 weeks 1.3698e-5 months

Condition B has two Required Actions. Each Required Action has its own 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 0.00333 hours 1.984127e-5 weeks 4.566e-6 months AND complete action B.2 within 36 hours4.166667e-4 days 0.01 hours 5.952381e-5 weeks 1.3698e-5 months . A total of 12 hours1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months is allowed for completing action B.1 and a total of 36 hours4.166667e-4 days 0.01 hours 5.952381e-5 weeks 1.3698e-5 months (not 48 hours5.555556e-4 days 0.0133 hours 7.936508e-5 weeks 1.8264e-5 months ) is allowed for completing action B.2 from the time that Condition B was entered. If action B.1 is completed within six hours, the time allowed for completing action B.2 is the next 30 hours3.472222e-4 days 0.00833 hours 4.960317e-5 weeks 1.1415e-5 months because the total time allowed for completing action B.2 is 36 hours4.166667e-4 days 0.01 hours 5.952381e-5 weeks 1.3698e-5 months .

(continued)

Certificate of Compliance No. 1015 A1-11 Renewed Amendment No. 2 Completion Times A 1.3

EXAMPLES EXAMPLE 1.3-2 (continued)

ACTIONS

CONDITION REQUIRED ACTION COMPLETION TIME

A. One System A.1 Restore System to 7 days not within within limit limit

B. Required B.1 Complete action 12 hours1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months Action and B.1 associated Completion AND Time not met B.2 Complete action 36 hours4.166667e-4 days 0.01 hours 5.952381e-5 weeks 1.3698e-5 months B.2

When a System is determined not to meet the LCO, Condition A is entered. If the System is not restored within seven 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, Conditions A and B are exited; therefore, the Required Actions of Condition B may be terminated.

(continued)

Certificate of Compliance No. 1015 A1-12 Renewed Amendment No. 2 Completion Times A 1.3

EXAMPLES EXAMPLE 1.3-3 (continued)

ACTIONS

NOTE-------------------------------------

Separate Condition entry is allowed for each component.

CONDITION REQUIRED ACTION COMPLETION TIME A. LCO not met A.1 Restore 4 hours4.62963e-5 days 0.00111 hours 6.613757e-6 weeks 1.522e-6 months compliance with LCO B. Required B.1 Complete action 6 hours6.944444e-5 days 0.00167 hours 9.920635e-6 weeks 2.283e-6 months Action and B.1 associated Completion AND Time not met B.2 Complete action 12 hours1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months B.2

The Note above the ACTIONS table is a method of modifying how the Completion Time is tracked. If this method of modifying how the Completion Time is tracked was applicable only 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 to be tracked on a per component basis. W hen a component is determined to not meet the LCO, Condition A is entered and its Completion Time starts. If subsequent components are determined to not meet the LCO, Condition A is entered for each component and separate Completion Times are tracked for each component.

(continued)

Certificate of Compliance No. 1015 A1-13 Renewed Amendment No. 2 Completion Times A 1.3

EXAMPLES EXAMPLE 1.3-3 (continued)

IMMEDIAT E W hen Immediately is used as a Completion Time, the Required Action COMPLETION should be pursued without delay and in a controlled manner.

TIME

Certificate of Compliance No. 1015 A1-14 Renewed Amendment No. 2 Frequency A 1.4 A 1.0 USE AND APPLICATION

A 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.

Each 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 requirements of the Frequency column of each SR.

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. W ith an SR satisfied, SR 3.0.4 imposes no restriction.

The use of met or performed in these instances conveys specific meanings. A Surveillance is met only after 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.

(continued)

Certificate of Compliance No. 1015 A1-15 Renewed Amendment No. 2 Frequency A 1.4

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 0.00333 hours 1.984127e-5 weeks 4.566e-6 months

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 0.00333 hours 1.984127e-5 weeks 4.566e-6 months ) 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 0.00333 hours 1.984127e-5 weeks 4.566e-6 months , SR 3.0.2 allows an extension of the time interval to 1.25 times the interval specified in the Frequency 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 the equipment or variables are outside specified limits, or the facility is outside the Applicability of the LCO). If the interval specified by SR 3.0.2 is exceeded while the facility is in a condition specified 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 facility 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.

(continued)

Certificate of Compliance No. 1015 A1-16 Renewed Amendment No. 2 Frequency A 1.4

EXAMPLE 1.4-2

SURVEILLANCE REQUIREMENTS

SURVEILLANCE FREQUENCY

Verify flow is within limits Once within 12 hours1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months prior to starting activity

AND

24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months 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 within 12 hours1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months prior to starting the activity.

The use of once indicates a single performance will satisfy the specified Frequency (assuming 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 performed, the measurement of both intervals stops. New intervals start upon preparing to restart the specified activity.

Certificate of Compliance No. 1015 A1-17 Renewed Amendment No. 2 THIS PAGE INTENTIONALLY LEFT BLANK A 2.0 A 2.0 [Reserved]

Certificate of Compliance No. 1015 A2-1 Renewed Amendment No. 2 THIS PAGE INTENTIONALLY LEFT BLANK LCO Applicability A 3.0 A 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 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 Required Action(s) is not required, unless otherwise stated.

LCO 3.0.3 Not applicable to a NAC-UMS SYSTEM.

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 Specification 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 an NAC-UMS SYSTEM.

Exceptions to this Condition are stated in the individual Specifications.

These exceptions allow entry into specified conditions in the Applicability where the associated ACTIONS to be entered allow operation in the specified conditions in the Applicability only for a limited period of time.

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 to return to service under administrative control to perform the testing.

Certificate of Compliance No. 1015 A3-1 Renewed Amendment No. 2 SR Applicability A 3.0 A 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 a failure to meet the LCO. Failure to perform a Surveillance within the specified Frequency shall be a 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 as 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 0.00667 hours 3.968254e-5 weeks 9.132e-6 months 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.

(continued)

Certificate of Compliance No. 1015 A3-2 Renewed Amendment No. 2 SR Applicability A 3.0

SR 3.0.3 (continued) W hen 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 the 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 NAC-UMS SYSTEM.

Certificate of Compliance No. 1015 A3-3 Renewed Amendment No. 2 CANISTER Maximum Time in Vacuum Drying A 3.1.1 A 3.1 NAC-UMS SYSTEM Integrity A 3.1.1 CANISTER Maximum Time in Vacuum Drying

LCO 3.1.1 The following limits for vacuum drying time shall be met, as appropriate:

1. The time duration from completion of draining the CANISTER through completion of vacuum dryness testing and the introduction of helium backfill shall not exceed 10 hours1.157407e-4 days 0.00278 hours 1.653439e-5 weeks 3.805e-6 months for BW R fuel with the design basis 23 kW heat load or the time shown for PW R fuel with the specified heat load:

Total Heat Time Limit Total Heat Time Limit Load (L) (kW ) (Hours) Load (L) (kW ) (Hours) 20 < L £ 23 10 11 < L £ 14 23 17.6 < L £ 20 15 8 < L £ 11 30 14 < L £ 17.6 19 L £ 8 34

2. The time duration from the end of 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months of in-pool cooling or of forced air cooling of the CANISTER through completion of vacuum dryness testing and the introduction of helium backfill shall not exceed 6 hours6.944444e-5 days 0.00167 hours 9.920635e-6 weeks 2.283e-6 months for either the PW R or BW R configuration or the time shown for a specified PW R heat load:

Total Heat Time Limit Load (L) (kW ) (Hours) 20 < L £ 23 6 14 < L £ 20 10 L £ 14 14

APPLICABILITY: During LOADING OPERATIONS

(continued)

Certificate of Compliance No. 1015 A3-4 Renewed Amendment No. 2 CANISTER Maximum Time in Vacuum Drying A 3.1.1

ACTIONS

NOTE----------------------------------------------------------------------

Separate Condition entry is allowed for each NAC-UMS SYSTEM.

CONDITION REQUIRED ACTION COMPLETION TIME A. LCO time limitsA.1 Commence filling CANISTER with2 hours not met helium AND A.2.1 Submerge TRANSFER CASK with 2 hours2.314815e-5 days 5.555556e-4 hours 3.306878e-6 weeks 7.61e-7 months helium filled loaded CANISTER in spent fuel pool.

AND A.2.2 Maintain TRANSFER CASK and Prior to restart of CANISTER in spent fuel pool for a LOADING minimum of 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months OPERATIONS OR A.3.1 Commence supplying air to the TRANSFER CASK annulus fill/drain 2 hours2.314815e-5 days 5.555556e-4 hours 3.306878e-6 weeks 7.61e-7 months lines at a rate of 375 CFM and a maximum temperature of 75°F AND A.3.2 Maintain airflow for a minimum of 24 Prior to restart of hours LOADING OPERATIONS SURVEILLANCE REQUIREMENTS

SURVEILLANCE FREQUENCY SR 3.1.1.1 Monitor elapsed time from completion ofOnce after completion of CANISTER draining operations until start of CANISTER draining helium backfill AND As required to meet time limit.

SR 3.1.1.2 Monitor elapsed time from the end of in-Once at end of in-pool cooling pool cooling or of forced-air cooling until or of forced-air cooling restart of helium backfill AND As required to meet time limit.

Certificate of Compliance No. 1015 A3-5 Renewed Amendment No. 2 CANISTER Vacuum Drying Pressure A 3.1.2 A 3.1 NAC-UMS SYSTEM Integrity A 3.1.2 CANISTER Vacuum Drying Pressure

LCO 3.1.2 The CANISTER vacuum drying pressure shall be less than or equal to 3 mm of mercury. Pressure shall be held for not less than 30 minutes.

APPLICABILITY: During LOADING OPERATIONS

ACTIONS

NOTE----------------------------------------------------

Separate Condition entry is allowed for each NAC-UMS SYSTEM.

CONDITION REQUIRED ACTION COMPLETION TIME

A. CANISTER vacuum drying A.1 Establish CANISTER 25 days pressure limit not met cavity vacuum drying pressure within limit

B. Required Action and B.1 Remove all fuel 5 days associated Completion assemblies from the Time not met NAC-UMS SYSTEM

SURVEILLANCE REQUIREMENTS

SURVEILLANCE FREQUENCY

SR 3.1.2.1 Verify CANISTER cavity vacuum dryingPrior to TRANSPORT pressure is within limit OPERATIONS.

Certificate of Compliance No. 1015 A3-6 Renewed Amendment No. 2 CANISTER Helium Backfill Pressure A 3.1.3 A 3.1 NAC-UMS SYSTEM Integrity A 3.1.3 CANISTER Helium Backfill Pressure

LCO 3.1.3 The CANISTER helium backfill pressure shall be 0 (+1, -0) psig.

APPLICABILITY: During LOADING OPERATIONS

ACTIONS

NOTE----------------------------------------------------

Separate Condition entry is allowed for each NAC-UMS SYSTEM.

CONDITION REQUIRED ACTION COMPLETION TIME

A. CANISTER helium backfill A.1 Establish CANISTER 25 days pressure limit not met helium backfill pressure within limit

B. Required Action and B.1 Remove all fuel 5 days associated Completion assemblies from the Time not met NAC-UMS SYSTEM

SURVEILLANCE REQUIREMENTS

SURVEILLANCE FREQUENCY

SR 3.1.3.1 Verify CANISTER helium backfill pressurePrior to TRANSPORT is within limit OPERATIONS.

Certificate of Compliance No. 1015 A3-7 Renewed Amendment No. 2 CANISTER Maximum Time in TRANSFER CASK A 3.1.4 A 3.1 NAC-UMS SYSTEM Integrity A 3.1.4 CANISTER Maximum Time in TRANSFER CASK

LCO 3.1.4 The following limits for CANISTER time in TRANSFER CASK shall be met, as appropriate:

1. The time duration from completion of backfilling the CANISTER with helium through completion of the CANISTER transfer operation from the TRANSFER CASK to the CONCRETE CASK shall not exceed 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months for the design basis BW R heat load of 23 kW or the time shown below for a specific PW R heat load:

Total PW R Heat Time Limit Load (L) (kW ) (Hours) 20 < L £ 23 16 17.6 < L £ 20 20 14 < L £ 17.6 48 L £ 14 Not Limited

2. The time duration from completion of in-pool or external forced air cooling of the CANISTER through completion of the CANISTER transfer operation from the TRANSFER CASK to the CONCRETE CASK shall not exceed 15 hours1.736111e-4 days 0.00417 hours 2.480159e-5 weeks 5.7075e-6 months for the BW R configuration or the time shown below for a specific PW R heat load:

Total PW R Heat Time Limit Load (L) (kW ) (Hours) 20 < L £ 23 6 17.6 < L £ 20 16 14 < L £ 17.6 20 L £ 14 Not Limited

The LCO time limits are also applicable if SR 3.1.5.1 was not met during vacuum drying operations.

APPLICABILITY: During LOADING OPERATIONS (continued)

Certificate of Compliance No. 1015 A3-8 Renewed Amendment No. 2 CANISTER Maximum Time in TRANSFER CASK A 3.1.4

ACTIONS

NOTE---------------------------------------------------------

Separate Condition entry is allowed for each NAC-UMS SYSTEM.

CONDITION REQUIRED ACTION COMPLETION TIME

A. LCO time limitsA.1.1 Place TRANSFER CASK with 2 hours2.314815e-5 days 5.555556e-4 hours 3.306878e-6 weeks 7.61e-7 months not met helium filled loaded CANISTER in spent fuel pool AND A.1.2 Maintain TRANSFER CASK and Prior to restart of CANISTER in spent fuel pool for a LOADING minimum of 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months OPERATIONS OR

A.2.1 Commence supplying air to the TRANSFER CASK annulus fill/drain 2 hours2.314815e-5 days 5.555556e-4 hours 3.306878e-6 weeks 7.61e-7 months lines at a rate of 375 CFM and a maximum temperature of 75°F AND

A.2.2 Maintain airflow for a minimum of 24 Prior to restart of hours LOADING OPERATIONS

SURVEILLANCE REQUIREMENTS

SURVEILLANCE FREQUENCY

SR 3.1.4.1 Monitor elapsed time from completion ofOnce at completion of helium helium backfill until completion of transfer backfill of loaded CANISTER into CONCRETE AND CASK 4 hours4.62963e-5 days 0.00111 hours 6.613757e-6 weeks 1.522e-6 months thereafter SR 3.1.4.2 Monitor elapsed time from completion of in-Once at completion of cooling pool or forced-air cooling until completion of operations transfer of loaded CANISTER into AND CONCRETE CASK 4 hours4.62963e-5 days 0.00111 hours 6.613757e-6 weeks 1.522e-6 months thereafter

Certificate of Compliance No. 1015 A3-9 Renewed Amendment No. 2 CANISTER Helium Leak Rate A 3.1.5 A 3.1 NAC-UMS SYSTEM Integrity A 3.1.5 CANISTER Helium Leak Rate

LCO 3.1.5 There shall be no indication of a helium leak at a test sensitivity of 1 x 10-7 cm3/sec (helium) through the CANISTER shield lid to CANISTER shell confinement weld to demonstrate a helium leak rate equal to or less than 2 x 10-7 cm3/sec (helium).

APPLICABILITY: During LOADING OPERATIONS

ACTIONS

NOTE----------------------------------------------------

Separate Condition entry is allowed for each NAC-UMS SYSTEM.

CONDITION REQUIRED ACTION COMPLETION TIME

A. CANISTER helium leak A.1 Establish CANISTER 25 days rate limit not met helium leak rate within limit

B. Required Action and B.1 Remove all fuel 5 days associated Completion assemblies from the Time not met NAC-UMS SYSTEM

SURVEILLANCE REQUIREMENTS

SURVEILLANCE FREQUENCY

SR 3.1.5.1 Verify CANISTER helium leak rate is withinOnce prior to TRANSPORT limit OPERATIONS.

Certificate of Compliance No. 1015 A3-10 Renewed Amendment No. 2 CONCRETE CASK Heat Removal System A 3.1.6 A 3.1 NAC-UMS SYSTEM A 3.1.6 CONCRETE CASK Heat Removal System

LCO 3.1.6 The CONCRETE CASK Heat Removal System shall be OPERABLE.

APPLICABILITY: During STORAGE OPERATIONS

ACTIONS

NOTE---------------------------------------------------

Separate Condition entry is allowed for each NAC-UMS SYSTEM.

CONDITION REQUIRED ACTION COMPLETION TIME

A. CONCRETE CASK Heat A.1 Restore CONCRETE 8 hours9.259259e-5 days 0.00222 hours 1.322751e-5 weeks 3.044e-6 months Removal System CASK Heat Removal inoperable System to OPERABLE status

B. Required Action A.1 and B.1 Perform SR 3.1.6.1 Immediately and every 6 associated Completion hours thereafter Time not met AND

B.2.1 Restore CONCRETE 12 hours1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months CASK Heat Removal System to OPERABLE status

(continued)

Certificate of Compliance No. 1015 A3-11 Renewed Amendment No. 2 CONCRETE CASK Heat Removal System A 3.1.6

SURVEILLANCE REQUIREMENTS

SURVEILLANCE FREQUENCY

SR 3.1.6.1 Verify the difference between the average24 hours CONCRETE CASK air outlet temperature and ISFSI ambient temperature is 102°F (for the PW R CANISTER) and 92°F (for the BW R CANISTER)

Certificate of Compliance No. 1015 A3-12 Renewed Amendment No. 2 CANISTER Removal from the CONCRETE CASK A 3.1.7

A 3.1 NAC-UMS SYSTEM Integrity A 3.1.7 CANISTER Removal from the CONCRETE CASK

LCO 3.1.7 The following limits for TRANSFER OPERATIONS shall be met, as appropriate:

1. The time duration for holding the CANISTER in the TRANSFER CASK shall not exceed 4 hours4.62963e-5 days 0.00111 hours 6.613757e-6 weeks 1.522e-6 months for either the PWR or BWR configurations, without forced air cooling.

2. The time duration for holding the CANISTER in the TRANSFER CASK using external forced air cooling of the CANISTER is not limited.

APPLICABILITY: During TRANSFER OPERATIONS

ACTIONS

NOTE--------------------------------------------------------------------

Separate Condition entry is allowed for each NAC-UMS SYSTEM.

Separate Condition entry to this LCO is allowed following each 24-hour period of continuous forced air cooling.

(continued)

Certificate of Compliance No. 1015 A3-13 Renewed Amendment No. 2 CANISTER Removal from the CONCRETE CASK A 3.1.7

CONDITION REQUIRED ACTION COMPLETION TIME

A. Loaded CANISTER A.1.1 Load CANISTER into operable 4 hours4.62963e-5 days 0.00111 hours 6.613757e-6 weeks 1.522e-6 months held in TRANSFER CONCRETE CASK CASK OR A.2.1 Load CANISTER into 4 hours4.62963e-5 days 0.00111 hours 6.613757e-6 weeks 1.522e-6 months TRANSPORT CASK

OR A.3.1 Perform A.1.1 or A.2.1 following a4 hours minimum of 24-hours of forced air cooling

B. Required Actions inB.1.1 Commence supplying air to the 2 hours2.314815e-5 days 5.555556e-4 hours 3.306878e-6 weeks 7.61e-7 months A and associated TRANSFER CASK annulus Completion Time fill/drain lines at a rate of 375 CFM not met and a maximum temperature of 75°F

AND 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months B.2.1 Maintain forced air cooling.

Condition A of this LCO may be re-entered after 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months of forced air cooling

(continued)

Certificate of Compliance No. 1015 A3-14 Renewed Amendment No. 2 CANISTER Removal from the CONCRETE CASK A 3.1.7

SURVEILLANCE REQUIREMENTS

SURVEILLANCE FREQUENCY

SR 3.1.7.1 Monitor elapsed time from closing of theOnce at closing of the TRANSFER CASK bottom shield doors TRANSFER CASK bottom until unloading of the CANISTER from the shield doors TRANSFER CASK AND 2 hours2.314815e-5 days 5.555556e-4 hours 3.306878e-6 weeks 7.61e-7 months thereafter

SR 3.1.7.2 Monitor continuous forced air coolingOnce at start of cooling operation until unloading of the CANISTER operations from the TRANSFER CASK AND 6 hours6.944444e-5 days 0.00167 hours 9.920635e-6 weeks 2.283e-6 months thereafter

Certificate of Compliance No. 1015 A3-15 Renewed Amendment No. 2 CANISTER Surface Contamination A 3.2.1 A 3.2 NAC-UMS SYSTEM Radiation Protection A 3.2.1 CANISTER Surface Contamination

LCO 3.2.1 Removable contamination on the accessible exterior surfaces of the CANISTER or accessible interior surfaces of the TRANSFER CASK shall each not exceed:

a. 1000 dpm/100 cm2 from beta and gamma sources; and

b. 20 dpm/100 cm2 from alpha sources.

APPLICABILITY: During LOADING OPERATIONS

ACTIONS

NOTE-----------------------------------------------------

Separate Condition entry is allowed for each NAC-UMS SYSTEM.

CONDITION REQUIRED ACTION COMPLETION TIME

A. CANISTER or A.1 Restore CANISTER and 7 days TRANSFER CASK TRANSFER CASK removable surface removable surface contamination limits not contamination to within met limits

(continued)

Certificate of Compliance No. 1015 A3-16 Renewed Amendment No. 2 CANISTER Surface Contamination A 3.2.1

SURVEILLANCE REQUIREMENTS

SURVEILLANCE FREQUENCY

SR 3.2.1.1 Verify that the removable contamination onOnce, prior to TRANSPORT the accessible exterior surfaces of the OPERATIONS CANISTER is within limits

SR 3.2.1.2 Verify that the removable contamination onOnce, prior to TRANSPORT the accessible interior surfaces of the OPERATIONS TRANSFER CASK does not exceed limits

Certificate of Compliance No. 1015 A3-17 Renewed Amendment No. 2 CONCRETE CASK Average Surface Dose Rate A 3.2.2 A 3.2 NAC-UMS SYSTEM Radiation Protection A 3.2.2 CONCRETE CASK Average Surface Dose Rates

LCO 3.2.2 The average surface dose rates of each CONCRETE CASK shall not exceed the following limits unless required ACTIONS A.1 and A.2 are met.

a. 50 mrem/hour (neutron + gamma) on the side (on the concrete surfaces);

b. 50 mrem/hour (neutron + gamma) on the top;

c. 100 mrem/hour (neutron + gamma) at air inlets and outlets.

APPLICABILITY: During LOADING OPERATIONS

ACTIONS

NOTE-------------------------------------------------

Separate Condition entry is allowed for each NAC-UMS SYSTEM.

CONDITION REQUIRED ACTION COMPLETION TIME

A. CONCRETE CASK A.1 Administratively verify 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months average surface dose rate correct fuel loading limits not met

AND

(continued)

Certificate of Compliance No. 1015 A3-18 Renewed Amendment No. 2 CONCRETE CASK Average Surface Dose Rate A 3.2.2

CONDITION REQUIRED ACTION COMPLETION TIME

A.2 Perform analysis to 7 days verify compliance with the ISFSI offsite radiation protection requirements of 10 CFR 20 and 10 CFR 72

B. Required Action and B.1 Remove all fuel 30 days associated Completion assemblies from the Time not met. NAC-UMS SYSTEM

SURVEILLANCE REQUIREMENTS

SURVEILLANCE FREQUENCY

SR 3.2.2.1 Verify average surface dose rates ofOnce after completion of CONCRETE CASK loaded with a transfer of CANISTER into CANISTER containing fuel assemblies are CONCRETE CASK and prior within limits. Dose rates shall be measured to beginning STORAGE at the locations shown in Figure A3-1. OPERATIONS.

Certificate of Compliance No. 1015 A3-19 Renewed Amendment No. 2 CONCRETE CASK Average Surface Dose Rate A 3.2.2

Figure A3-1 CONCRETE CASK Surface Dose Rate Measurement

Measure dose rates at target points shown

Measure dose rates at eight target points (0, 45, 90, 135, 180, 225, 270 and 315 degrees) on each plane, at center of each inlet and outlet and at a point in between each inlet and outlet.

Certificate of Compliance No. 1015 A3-20 Renewed Amendment No. 2 CONCRETE CASK Average Surface Dose Rate A 3.2.2

Table A3-1 [deleted]

Certificate of Compliance No. 1015 A3-21 Renewed Amendment No. 2 THIS PAGE INTENTIONALLY LEFT BLANK A 4.0

A 4.0 [Reserved]

Certificate of Compliance No. 1015 A4-1 Renewed Amendment No. 2 THIS PAGE INTENTIONALLY LEFT BLANK Administrative Controls and Programs A 5.0

A 5.0 ADMINISTRATIVE CONTROLS AND PROGRAMS

A 5.1 Training Program A training program for the NAC-UMS Universal Storage System shall be developed under the general licensees systematic approach to training (SAT). Training modules shall include comprehensive instructions for the operation and maintenance of the NAC-UMS Universal Storage System and the independent spent fuel storage installation (ISFSI).

A 5.2 Pre-Operational Testing and Training Exercises A dry run training exercise on loading, closure, handling, unloading, and transfer of the NAC-UMS Storage System shall be conducted by the licensee prior to the first use of the system to load spent fuel assemblies. The training exercise shall not be conducted with spent fuel in the CANISTER. The dry run may be performed in an alternate step sequence from the actual procedures, but all steps must be performed. The dry run shall include, but is not limited to the following:

a. Moving the CONCRETE CASK into its designated loading area

b. Moving the TRANSFER CASK containing the empty CANISTER into the spent fuel pool

c. Loading one or more dummy fuel assemblies into the CANISTER, including independent verification

d. Selection and verification of fuel assemblies requiring preferential loading

e. Installing the shield lid

f. Removal of the TRANSFER CASK from the spent fuel pool

g. Closing and sealing of the CANISTER to demonstrate pressure testing, vacuum drying, helium backfilling, welding, weld inspection and documentation, and leak testing

h. TRANSFER CASK movement through the designated load path

i. TRANSFER CASK installation on the CONCRETE CASK

j. Transfer of the CANISTER to the CONCRETE CASK

(continued)

Certificate of Compliance No. 1015 A5-1 Renewed Amendment No. 2 Administrative Controls and Programs A 5.0

A 5.2 Pre-Operational Testing and Training Exercises (continued)

k. CONCRETE CASK shield plug and lid installation

l. Transport of the CONCRETE CASK to the ISFSI

m. CANISTER unloading, including reflooding and weld removal or cutting

n. CANISTER removal from the CONCRETE CASK

Appropriate mockup fixtures may be used to demonstrate and/or to qualify procedures, processes or personnel in welding, weld inspection, vacuum drying, helium backfilling, leak testing and weld removal or cutting.

A 5.3 Special Requirements for the First System Placed in Service The heat transfer characteristics and performance of the NAC-UMS SYSTEM will be recorded by air inlet and outlet temperature measurements of the first system placed in service with a heat load equal to or greater than 10 kW. A letter report summarizing the results of the measurements will be submitted to the NRC in accordance with 10 CFR 72.4 within 30 days of placing the loaded cask on the ISFSI pad. The report will include a comparison of the calculated temperatures of the NAC-UMS SYSTEM heat load to the measured temperatures. A report is not required to be submitted for the NAC-UMS SYSTEMs that are subsequently loaded, provided that the performance of the first system placed in service with a heat load 10 kW, is demonstrated by the comparison of the calculated and measured temperatures.

A 5.4 Surveillance After an Off-Normal, Accident, or Natural Phenomena Event A Response Surveillance is required following off-normal, accident or natural phenomena events. The NAC-UMS SYSTEMs in use at an ISFSI shall be inspected within 4 hours4.62963e-5 days 0.00111 hours 6.613757e-6 weeks 1.522e-6 months after the occurrence of an off-normal, accident or natural phenomena event in the area of the ISFSI. This inspection must specifically verify that all the CONCRETE CASK inlets and outlets are not blocked or obstructed. At least one-half of the inlets and outlets on each CONCRETE CASK must be cleared of blockage or debris within 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months to restore air circulation.

The CONCRETE CASK and CANISTER shall be inspected if they experience a drop or a tipover.

(continued)

Certificate of Compliance No. 1015 A5-2Renewed Amendment No. 2 Administrative Controls and Programs A 5.0

A 5.5 Radioactive Effluent Control Program The program implements the requirements of 10 CFR 72.44(d).

a. The NAC-UMS SYSTEM does not create any radioactive materials or have any radioactive waste treatment systems. Therefore, specific operating procedures for the control of radioactive effluents are not required. LCO 3.1.5, CANISTER Helium Leak Rate, provides assurance that there are no radioactive effluents from the NAC-UMS SYSTEM.

b. This program includes an environmental monitoring program. Each general license user may incorporate NAC-UMS SYSTEM operations into their environmental monitoring program for 10 CFR Part 50 operations.

c. An annual report shall be submitted pursuant to 10 CFR 72.44(d)(3).

A 5.6 NAC-UMS SYSTEM Transport Evaluation Program This program provides a means for evaluating various transport configurations and transport route conditions to ensure that the design basis drop limits are met. For lifting of the loaded TRANSFER CASK or CONCRETE CASK using devices that are integral to a structure governed by 10 CFR Part 50 regulations, 10 CFR 50 requirements apply.

This program is not applicable when the TRANSFER CASK or CONCRETE CASK is in the fuel building or is being handled by a device providing support from underneath (i.e.,

on a rail car, heavy haul trailer, air pads, etc.).

Pursuant to 10 CFR 72.212, this program shall evaluate the site specific transport route conditions.

a. The lift height above the transport surface prescribed in Section B3.4.1(6) of Appendix B to Certificate of Compliance (CoC) No. 1015 shall not exceed the limits in Table A5-1. Also, the program shall ensure that the transport route conditions (i.e., surface hardness and pad thickness) are equivalent to or less limiting than those prescribed for the reference pad surface which forms the basis for the values cited in Section B3.4.1(6) of Appendix B to CoC No. 1015.

(continued)

Certificate of Compliance No. 1015 A5-3Renewed Amendment No. 2 Administrative Controls and Programs A 5.0

A 5.6 NAC-UMS SYSTEM Transport Evaluation Program (continued)

b. For site specific transport conditions which are not bounded by the surface characteristics in Section B3.4.6 of Appendix B to CoC No. 1015, the program may evaluate the site specific conditions to ensure that the impact loading due to design basis drop events does not exceed 60g. This alternative analysis shall be commensurate with the drop analyses described in the Safety Analysis Report for the NAC-UMS SYSTEM. The program shall ensure that these alternative analyses are documented and controlled.

c. The TRANSFER CASK and CONCRETE CASK may be lifted to those heights necessary to perform cask handling operations, including CANISTER transfer, provided the lifts are made with structures and components designed in accordance with the criteria specified in Section B3.5 of Appendix B to CoC No. 1015, as applicable.

A 5.7 Verification of Oxide Layer Thickness on High Burnup Fuel

A verification program is required to determine the oxide layer thickness on high burnup fuel by measurement or by statistical analysis. A fuel assembly having a burnup between 45,000 MW D/MTU and 50,000 MW D/MTU is classified as high burnup. The verification program shall be capable of classifying high burnup fuel as INTACT FUEL or DAMAGED FUEL based on the following criteria:

1. A HIGH BURNUP FUEL assembly may be stored as INTACT FUEL provided that no more than 1% of the fuel rods in the assembly have a peak cladding oxide thickness greater than 80 microns, and that no more than 3% of the fuel rods in the assembly have a peak oxide layer thickness greater than 70 microns, and that the fuel assembly is otherwise INTACT FUEL.

2. A HIGH BURNUP FUEL assembly not meeting the cladding oxide thickness criteria for INTACT FUEL or that has an oxide layer that is detached or spalled from the cladding is classified as DAMAGED FUEL.

A fuel assembly, having a burnup between 45,000 and 50,000 MWD/MTU, must be preferentially loaded in periphery positions of the basket.

Certificate of Compliance No. 1015 A5-4Renewed Amendment No. 2 TRANSFER CASK and CONCRETE CASK Lifting Requirements Table A5-1

A 5.8 Aging Management Program

Each general licensee shall have a program to establish, implement, and maintain written procedures for each aging management program (AMP) described in the updated final safety analysis report (UFSAR). The program shall include provisions for changing AMP elements, as necessary, and, within the limitations of the approved licensing bases, to address new information on aging effects based on inspection findings and/or industry operating experience provided to the general licensee during the renewal period. The program document shall contain a reference to the specific aspect of the AMP element implemented by that program document, and that reference shall be maintained even if the program document is modified.

The general licensee shall establish and implement this program document prior to entering the period of extended operation or no later than one year after the effective date of the CoC renewal, whichever is later. The general licensee shall maintain the program document for as long as the general licensee continues to operate NAC-UMS Systems in service for longer than 20 years.

Table A5-1 TRANSFER CASK and CONCRETE CASK Lifting Requirements

Item Orientation Lifting Height Limit

TRANSFER CASK Horizontal None Established

TRANSFER CASK Vertical None Established1 CONCRETE CASK Horizontal Not Permitted

CONCRETE CASK Vertical < 24 inches

Note:

1. See Technical Specification A5.6(c).

Certificate of Compliance No. 1015 A5-5 Renewed Amendment No. 2 THIS PAGE INTENTIONALLY LEFT BLANK APPENDIX B

APPROVED CONTENTS AND DESIGN FEATURES FOR THE NAC-UMS SYSTEM

AMENDMENT NO. 2

Certificate of Compliance No. 1015 B-1Renewed Amendment No. 2 Appendix B Table of Contents

B 1.0 [Reserved].................................................................................................................B1-1

B 2.0 Approved Contents.................................................................................................... B2-1 B 2.1 Fuel Specifications and Loading Conditions................................................... B2-1

Figure B2-1 PW R Basket Fuel Loading Positions........................................................... B2-6 Figure B2-2 BW R Basket Fuel Loading Positions........................................................... B2-6 Table B2-1 Fuel Assembly Limits.................................................................................. B2-7 Table B2-2 PW R Fuel Assembly Characteristics......................................................... B2-10 Table B2-3 BW R Fuel Assembly Characteristics......................................................... B2-11 Table B2-4 Minimum Cooling Time Versus Burnup/Initial Enrichment for PW R Fuel................................................................................................. B2-12 Table B2-5 Minimum Cooling Time Versus Burnup/Initial Enrichment for BW R Fuel................................................................................................. B2-13 Table B2-6 Maine Yankee Site Specific Fuel Canister Loading Position Summary................................................................................................... B2-14 Table B2-7 Maine Yankee Site Specific Fuel Limits..................................................... B2-15 Table B2-8 Loading Table for Maine Yankee CE 14 x 14 Fuel with No Non-Fuel Material - Required Cool Time in Years Before Assembly is Acceptable............................................................................................. B2-18 Table B2-9 Loading Table for Maine Yankee CE 14 x 14 Fuel Containing CEA Cooled to Indicated Time.................................................................. B2-20

B 3.0 Design Features.......................................................................................................B3-1 B 3.1 Site...............................................................................................................B3-1 B 3.2 Design Features Important for Criticality Control...........................................B3-1 B 3.3 Codes and Standards...................................................................................B3-1 B 3.4 Site Specific Parameters and Analyses.........................................................B3-7 B 3.5 CANISTER HANDLING FACILITY (CHF)...................................................B3-11

Certificate of Compliance No. 1015 B-2Renewed Amendment No. 2 Appendix B Table of Contents (continued)

Table B3-1 List of ASME Code Exceptions for the NAC-UMS SYSTEM................ B3-3 Table B3-2 Load Combinations and Service Condition Definitions for the CANISTER HANDLING FACILITY (CHF) Structure............................. B3-13

Certificate of Compliance No. 1015 B-3Renewed Amendment No. 2 THIS PAGE INTENTIONALLY LEFT BLANK

[Reserved]

B 1.0

B 1.0 [Reserved]

Certificate of Compliance No. 1015 B1-1 Renewed Amendment No. 2 THIS PAGE INTENTIONALLY LEFT BLANK Approved Contents B 2.0 B 2.0 APPROVED CONTENTS

B 2.1 Fuel Specifications and Loading Conditions The NAC-UMS System is designed to provide passive dry storage of canistered PW R and BWR spent fuel. The system requires few operating controls. The principal controls and limits for the NAC-UMS System are satisfied by the selection of fuel for storage that meets the Approved Contents presented in this section and in Tables B2-1 through B2-5 for the standard NAC-UMS System design basis spent fuels.

This section also permits the loading of fuel assemblies that are unique to specific reactor sites. SITE SPECIFIC FUEL assembly configurations are either shown to be bounded by the analysis of the standard NAC-UMS System design basis fuel assembly configuration of the same type (PW R or BW R), or are shown to be acceptable contents by specific evaluation of the configuration.

The separate specific evaluation may establish different limits, which are maintained by administrative controls for preferential loading. The preferential loading controls allow the loading of fuel configurations that may have higher burnup, additional hardware material or unique configurations as compared to the standard NAC-UMS System design basis spent fuels.

Unless specifically excepted, SITE SPECIFIC FUEL must meet all of the controls and limits specified for the NAC-UMS System.

If any Fuel Specification or Loading Conditions of this section are violated, the following actions shall be completed:

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

W ithin 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months , notify the NRC Operations Center.

W ithin 30 days, submit a special report that describes the cause of the violation and actions taken to restore or demonstrate compliance and prevent recurrence.

(continued)

Certificate of Compliance No. 1015 B2-1Renewed Amendment No. 2 Approved Contents B 2.0

B 2.1.1 Fuel to be Stored in the NAC-UMS SYSTEM

INTACT FUEL ASSEMBLIES meeting the limits specified in Tables B2-1 through B2-5 may be stored in the NAC-UMS SYSTEM.

B 2.1.2 Preferential Fuel Loading

The normal temperature distribution in the loaded TRANSPORTABLE STORAGE CANISTER results in the basket having the highest temperature at its center and lowest temperature at the outer edge. Considering this temperature distribution, spent fuel with the shortest cooling time (and, therefore, having a higher allowable cladding temperature) is placed in the center of the basket. Fuel with the longest cooling time (and, therefore, having a lower allowable cladding temperature) is placed in the periphery of the basket.

Using a similar argument, fuel assemblies with cooling times between the highest and lowest cooling times of the designated fuel, are placed in intermediate fuel positions.

Loading of the fuel assemblies designated for a given TRANSPORTABLE STORAGE CANISTER must be administratively controlled to ensure that the dry storage fuel cladding temperature limits are not exceeded for any fuel assembly, unless all of the designated fuel assemblies have a cooling time of 7 years or more.

CANISTERS containing fuel assemblies, all of which have a cooling time of 7 years or more, do not require preferential loading, because analyses have shown that the fuel cladding temperature limits will always be met for those CANISTERS.

CANISTERS containing fuel assemblies with cooling times from 5 to 7 years must be preferentially loaded based on cooling time. By controlling the placement of the fuel assemblies with the shortest cooling time (thermally hottest), preferential loading ensures that the allowable fuel cladding temperature for a given fuel assembly is not exceeded. The preferential loading of fuel into the CANISTER based on cooling time is described as follows.

(continued)

Certificate of Compliance No. 1015 B2-2Renewed Amendment No. 2 Approved Contents B 2.0

For the PWR fuel basket configuration, shown in Figure B2-1, fuel positions are numbered using the drain line as the reference point. Fuel positions 9, 10, 15 and 16 are considered to be basket center positions for the purpose of meeting the preferential loading requirement. The fuel with the shortest cooling times from among the fuel designated for loading in the CANISTER will be placed in the center positions. A single fuel assembly having the shortest cooling time may be loaded in any of these four positions. Fuel positions 1, 2, 3, 6, 7, 12, 13, 18, 19, 22, 23 and 24 are periphery positions, where fuel with the longest cooling times will be placed. Fuel with the longest cooling times may be loaded in any of these 12 positions. Similarly, designated fuel assemblies with cooling times in the midrange of the shortest and longest cooling times will be loaded in the intermediate fuel positions - 4, 5, 8, 11, 14, 17, 20 and 21.

For the BW R fuel basket configuration, shown in Figure B2-2, fuel positions are also numbered using the drain line as the reference point. Fuel positions 23, 24, 25, 32, 33 and 34 are considered to be basket center positions for the purpose of meeting the preferential loading requirement. The fuel with the shortest cooling times from among the fuel designated for loading in the CANISTER will be placed in the center positions.

However, the single fuel assembly having the shortest cooling time will be loaded in either position 24 or position 33. Fuel positions 1, 2, 3, 4, 5, 6, 12, 13, 19, 20, 28, 29, 37, 38, 44, 45, 51, 52, 53, 54, 55 and 56 are periphery positions, where fuel with the longest cooling times will be placed. Fuel with the longest cooling times may be loaded in any of these 22 positions. Designated fuel assemblies with cooling times in the midrange of the shortest and longest cooling times will be divided into two tiers. The fuel assemblies with the shorter cooling times in the midrange will be loaded in the inner intermediate fuel positions - 15, 16, 17, 22, 26, 31, 35, 40, 41, and 42. Fuel assemblies with the longer cooling times in the midrange will be loaded in the outer intermediate fuel positions - 7, 8, 9, 10, 11, 14, 18, 21, 27, 30, 36, 39, 43, 46, 47, 48, 49 and 50.

These loading patterns result in the placement of fuel such that the shortest-cooled fuel is in the center of the basket and the longest-cooled fuel is on the periphery. Based on engineering evaluations, this loading pattern ensures that fuel assembly allowable cladding temperatures are satisfied.

(continued)

Certificate of Compliance No. 1015 B2-3Renewed Amendment No. 2 Approved Contents B 2.0 B 2.1.3 Maine Yankee SITE SPECIFIC FUEL Preferential Loading

The estimated Maine Yankee SITE SPECIFIC FUEL inventory is shown in Table B2-6. As shown in this table, certain of the Maine Yankee fuel configurations must be preferentially loaded in specific basket fuel tube positions.

Corner positions are used for CONSOLIDATED FUEL, certain HIGH BURNUP FUEL and DAMAGED FUEL or FUEL DEBRIS loaded in a MAINE YANKEE FUEL CAN, for fuel assemblies with missing fuel rods, burnable poison rods or fuel assemblies with fuel rods that have been replaced by hollow Zircaloy rods. Designation for placement in corner positions results primarily from shielding or criticality evaluations of these fuel configurations. CONSOLIDATED FUEL is conservatively designated for a corner position, even though analysis shows that these lattices could be loaded in any basket position. Corner positions are positions 3, 6, 19, and 22 in Figure B2-1.

Preferential loading is also used for HIGH BURNUP fuel not loaded in the MAINE YANKEE FUEL CAN. This fuel is assigned to peripheral locations, positions 1, 2, 3, 6, 7, 12, 13, 18, 19, 22, 23, and 24 in Figure B2-1. The interior locations must be loaded with fuel that has lower burnup and/or longer cool times to maintain the design basis heat load and component temperature limits for the basket and canister, and the spent fuel short-term temperature limits, as described in Section B 2.1.2.

One of the three loading patterns (Standard, 1.05 kW (periphery), or 0.958 kW (periphery))

shown in Table B2-8 must be used to load each canister. Once selected, all of the spent fuel in that canister must be loaded in accordance with that pattern. W ithin a pattern, mixing of enrichment and cool time is allowed, but no mixing of loading patterns is permitted. For example, choosing a Perf (1.05) pattern restricts the interior fuel to the cool times shown in the Perf (1.05i) column, and the peripherial fuel to the cool times shown in the Perf (1.05p) column.

Fuel assemblies with a control element assembly (CEA) inserted will be loaded in a Class 2 canister and basket due to the increased length of the assembly with the CEA installed.

However, these assemblies are not restricted as to loading position within the basket. Fuel assemblies with non-fuel items installed in corner guide tubes of the fuel assembly must also have a CEA plug installed and must be loaded in a basket corner fuel position in a Class 2 canister.

(continued)

Certificate of Compliance No. 1015 B2-4Renewed Amendment No. 2 Approved Contents B 2.0 The Transportable Storage Canister loading procedures indicate that loading of a fuel configuration with removed fuel or poison rods, CONSOLIDATED FUEL, or a MAINE YANKEE FUEL CAN with DAMAGED FUEL, FUEL DEBRIS or HIGH BURNUP FUEL, is administratively controlled in accordance with Section B 2.1.

Certificate of Compliance No. 1015 B2-5Renewed Amendment No. 2 Approved Contents B 2.0 Figure B2-1 PW R Basket Fuel Loading Positions

Figure B2-2 BW R Basket Fuel Loading Positions

Certificate of Compliance No. 1015 B2-6 Renewed Amendment No. 2 Approved Contents B 2.0

Table B2-1 Fuel Assembly Limits

I. NAC-UMS CANISTER: PW R FUEL A. Allowable Contents

1. Uranium oxide PWR INTACT FUEL ASSEMBLIES listed in Table B2-2 and meeting the following specifications:

a. Cladding Type: Zircaloy with thickness as specified in Table B2-2 for the applicable fuel assembly class

b. Enrichment: Maximum and minimum enrichments are 4.2 and 1.9 wt % 235U, respectively. Fuel enrichment, burnup and cool time are related as shown in Table B2-4.

c. Decay Heat Per Assembly: < 958.3 watts

d. Post-irradiation Cooling As specified in Table B2-4 Time and Average Burnup Per Assembly:

e. Nominal Fresh Fuel Assembly < 178.3 Length (in.):

f. Nominal Fresh Fuel Assembly < 8.54 W idth (in.):

g. Fuel Assembly W eight (lbs.): < 1,515

B. Quantity per CANISTER: Up to 24 PW R INTACT FUEL ASSEMBLIES.

C. PW R INTACT FUEL ASSEMBLIES may contain thimble plugs and burnable poison inserts (Class 1 and Class 2 contents).

D. PW R INTACT FUEL ASSEMBLIES shall not contain control components.

E. Stainless steel spacers may be used in CANISTERS to axially position PW R INTACT FUEL ASSEMBLIES that are shorter than the available cavity length to facilitate handling.

F. Unenriched fuel assemblies are not authorized for loading.

G. The minimum length of the PW R INTACT FUEL ASSEMBLY internal structure and bottom end fitting and/or spacers shall ensure that the minimum distance to the fuel region from the base of the CANISTER is 3.2 inches.

H. PWR INTACT FUEL ASSEMBLIES with one or more grid spacers missing or damaged such that the unsupported length of the fuel rods does not exceed 60 inches. End fitting damage including damaged or missing hold-down springs is allowed, as long as the assembly can be handled safely by normal means.

Certificate of Compliance No. 1015 B2-7 Renewed Amendment No. 2 Approved Contents B 2.0

Table B2-1 Fuel Assembly Limits (continued)

II. NAC-UMS CANISTER: BW R FUEL A. Allowable Contents

1. Uranium oxide BW R INTACT FUEL ASSEMBLIES listed in Table B2-3 and meeting the following specifications:

a. Cladding Type: Zircaloy with thickness as specified in Table B2-3 for the applicable fuel assembly class.

b. Enrichment: Maximum and minimum INITIAL PEAK PLANAR-AVERAGE ENRICHMENTS are 4.0 and 1.9 wt % 235U, respectively. Fuel enrichment, burnup and cooling time are related as shown in Table B2-5.

c. Decay Heat per Assembly: < 410.7 watts

d. Post-irradiation Cooling Time As specified in Table B2-5 and for the and Average Burnup Per applicable fuel assembly class.

Assembly:

e. Nominal Fresh Fuel Design < 176.1 Assembly Length (in.):

f. Nominal Fresh Fuel Design < 5.51 Assembly W idth (in.):

g. Fuel Assembly W eight (lbs): < 683, including channels

Certificate of Compliance No. 1015 B2-8 Renewed Amendment No. 2 Approved Contents B 2.0

Table B2-1 Fuel Assembly Limits (continued)

B. Quantity per CANISTER: Up to 56 BW R INTACT FUEL ASSEMBLIES C. BW R INTACT FUEL ASSEMBLIES can be unchanneled or channeled with Zircaloy channels.

D. BW R INTACT FUEL ASSEMBLIES with stainless steel channels shall not be loaded.

E. Stainless steel fuel spacers may be used in CANISTERS to axially position BW R INTACT FUEL ASSEMBLIES that are shorter than the available cavity length to facilitate handling.

F. Unenriched fuel assemblies are not authorized for loading.

G. The minimum length of the BWR INTACT FUEL ASSEMBLY internal structure and bottom end fitting and/or spacers shall ensure that the minimum distance to the fuel region from the base of the CANISTER is 6.2 inches.

Certificate of Compliance No. 1015 B2-9Renewed Amendment No. 2 Approved Contents B 2.0 Table B2-2 PW R Fuel Assembly Characteristics

Min. Max. Min.

No of Max. Clad Max. Active Guide Fuel Max. Fuel Pitch Min. Rod Thick Pellet Length Tube Class1 Vendor2 Array MTU Rods (in) Dia. (in) (in) Dia.(in) (in) Thick (in) 1 CE 14x14 0.404 1764 0.590 0.438 0.024 0.380 137.0 0.034 1 Ex/ANF 14x14 0.369 179 0.556 0.424 0.030 0.351 142.0 0.034 1 W E 14x14 0.362 179 0.556 0.400 0.024 0.345 144.0 0.034 1 W E 14x14 0.415 179 0.556 0.422 0.022 0.368 145.2 0.034 1WE, 15x15 0.465 204 0.563 0.422 0.024 0.366 144.0 0.015 Ex/ANF 1 Ex/ANF 17x17 0.413 264 0.496 0.360 0.025 0.303 144.0 0.016 1 W E 17x17 0.468 264 0.496 0.374 0.022 0.323 144.0 0.016 1 W E 17x17 0.429 264 0.496 0.360 0.022 0.309 144.0 0.016 2 B&W 15x15 0.481 208 0.568 0.430 0.026 0.369 144.0 0.016 2 B&W 17x17 0.466 264 0.502 0.379 0.024 0.324 143.0 0.017 3CE 16x16 0.442 2364 0.506 0.382 0.023 0.3255 150.0 0.035 1Ex/ANF3 14x14 0.375 179 0.556 0.417 0.030 0.351 144.0 0.036 1CE3 15x15 0.432 216 0.550 0.418 0.026 0.358 132.0 ----

1Ex/ANF3 15x15 0.431 216 0.550 0.417 0.030 0.358 131.8 ----

1CE3 16x16 0.403 2364 0.506 0.382 0.023 0.3255 136.7 0.035

1. Maximum Initial Enrichment: 4.2 wt % 235U. All fuel rods are Zircaloy clad.

2. Vendor ID indicates the source of assembly base parameters, which are nominal, pre-irradiation values. Loading of assemblies meeting above limits is not restricted to the vendor(s) listed.

3. 14x14, 15x15 and 16x16 fuel manufactured for Prairie Island, Palisades and St. Lucie 2 cores, respectively. These are not generic fuel assemblies provided to multiple reactors.

4. Some fuel rod positions may be occupied by burnable poison rods or solid filler rods.

Certificate of Compliance No. 1015 B2-10 Renewed Amendment No. 2 Approved Contents B 2.0

Table B2-3 BW R Fuel Assembly Characteristics

Min.

No of Max. Min. Clad Max.

Fuel Max. Fuel Pitch Rod Thick Pellet Max. Active Class1,5 Vendor4 Array MT U Rods (in) Dia. (in) (in) Dia.(in) Length (in)2 45 Ex/ANF 7 X 7 0.196 48 0.738 0.570 0.036 0.490 144.0 4 Ex/ANF 8 X 8 0.177 63 0.641 0.484 0.036 0.405 145.2 4 Ex/ANF 9 X 9 0.173 79 0.572 0.424 0.030 0.357 145.2 4 GE 7 X 7 0.199 49 0.738 0.570 0.036 0.488 144.0 4 GE 7 X 7 0.198 49 0.738 0.563 0.032 0.487 144.0 4 GE 8 X 8 0.173 60 0.640 0.484 0.032 0.410 145.2 4 GE 8 X 8 0.179 62 0.640 0.483 0.032 0.410 145.2 4 GE 8 X 8 0.186 63 0.640 0.493 0.034 0.416 144.0 5 Ex/ANF 8 X 8 0.180 62 0.641 0.484 0.036 0.405 150.0 5 Ex/ANF 9 X 9 0.167 743 0.572 0.424 0.030 0.357 150.0 56 Ex/ANF 9 X 9 0.178 793 0.572 0.424 0.030 0.357 150.0 5 GE 7 X 7 0.198 49 0.738 0.563 0.032 0.487 144.0 5 GE 8 X 8 0.179 60 0.640 0.484 0.032 0.410 150.0 5 GE 8 X 8 0.185 62 0.640 0.483 0.032 0.410 150.0 5 GE 8 X 8 0.188 63 0.640 0.493 0.034 0.416 146.0 5 GE 9 X 9 0.186 743 0.566 0.441 0.028 0.376 150.0 5 GE 9 X 9 0.198 793 0.566 0.441 0.028 0.376 150.0

1. Maximum Initial Peak Planar Average Enrichment 4.0 wt % 235U. All fuel rods are Zircaloy clad.

2. 150 inch active fuel length assemblies contain 6 natural uranium blankets on top and bottom.

3. Shortened active fuel length in some rods.

4. Vendor ID indicates the source of assembly base parameters, which are nominal, pre-irradiation values.

Loading of assemblies meeting above limits is not restricted to the vendor(s) listed.

5. UMS Class 4 and 5 for BW R 2/3 fuel.

6. Assembly width including channel. Unchanneled or channeled assemblies may be loaded based on a maximum channel thickness of 120 mil.

Certificate of Compliance No. 1015 B2-11 Renewed Amendment No. 2 Approved Contents B 2.0

Table B2-4 Minimum Cooling Time Versus Burnup/Initial Enrichment for PW R Fuel

Minimum Burnup £ 30 GWD/MTU30< Burnup £ 35 GWD/MTU Initial Minimum Cooling Time [years] Minimum Cooling Time [years]

Enrichment wt % 235U (E) 14x14 15x15 16x16 17x17 14x14 15x15 16x16 17x17 1.9 £ E < 2.1 55557757 2.1 £ E < 2.3 55557656 2.3 £ E < 2.5 55556656 2.5 £ E < 2.7 55556656 2.7 £ E < 2.9 55556555 2.9 £ E < 3.1 55555555 3.1 £ E < 3.3 55555555 3.3 £ E < 3.5 55555555 3.5 £ E < 3.7 55555555 3.7 £ E £ 4.2 55555555

Minimum 35< Burnup £ 40 GWD/MTU40< Burnup £ 45 GWD/MTU Initial Minimum Cooling Time [years] Minimum Cooling Time [years]

Enrichment wt % 235U (E) 14x14 15x15 16x16 17x17 14x14 15x15 16x16 17x17 1.9 £ E < 2.1 101071015151115 2.1 £ E < 2.3 997914131013 2.3 £ E < 2.5 886812131012 2.5 £ E < 2.7 886811131012 2.7 £ E < 2.9 78681012912 2.9 £ E < 3.1 7868912911 3.1 £ E < 3.3 6867812910 3.3 £ E < 3.5 6867812910 3.5 £ E < 3.7 6866811910 3.7 £ E £ 4.2 6766810910

Certificate of Compliance No. 1015 B2-12 Renewed Amendment No. 2 Approved Contents B 2.0

Table B2-5 Minimum Cooling Time Versus Burnup/Initial Enrichment for BW R Fuel

Minimum Initial Burnup £ 30 GWD/MTU 30< Burnup £ 35 GWD/MTU Enrichment Minimum Cooling Time [years] Minimum Cooling Time [years]

wt % 235U (E) 7x7 8x8 9x9 7x7 8x8 9x9 1.9 £ E < 2.1 555877 2.1 £ E < 2.3 555666 2.3 £ E < 2.5 555555 2.5 £ E < 2.7 555555 2.7 £ E < 2.9 555555 2.9 £ E < 3.1 555555 3.1 £ E < 3.3 555555 3.3 £ E < 3.5 555555 3.5 £ E < 3.7 555555 3.7 £ E £ 4.0 555555

Minimum Initial 35< Burnup £ 40 GWD/MTU 40< Burnup £ 45 GWD/MTU Enrichment Minimum Cooling Time [years] Minimum Cooling Time [years]

wt % 235U (E) 7x7 8x8 9x9 7x7 8x8 9x9 1.9 £ E < 2.1 16 14 15 26 24 25 2.1 £ E < 2.3 13 12 12 23 21 22 2.3 £ E < 2.5 9 8 8 18 16 17 2.5 £ E < 2.7 8 7 7 15 14 14 2.7 £ E < 2.9 7 6 6 13 11 12 2.9 £ E < 3.1 6 6 6 11 10 10 3.1 £ E < 3.3 656989 3.3 £ E < 3.5 656878 3.5 £ E < 3.7 656777 3.7 £ E £ 4.0 655767

Certificate of Compliance No. 1015 B2-13 Renewed Amendment No. 2 Approved Contents B 2.0 Table B2-6 Maine Yankee Site Specific Fuel Canister Loading Position Summary

Est. Number of Site Specific Spent Fuel Configurations 1 Assemblies 2 Canister LoadingPosition Total Number of Fuel Assemblies3 1,434 Inserted Control Element Assembly (CEA) 168 Any Inserted In-Core Instrument (ICI) Thimble 138 Any Consolidated Fuel 2 Corner4 Fuel Rod Replaced by Rod Enriched to 1.95 wt % 3 Any Fuel Rod Replaced by Stainless Steel Rod or Zircaloy 18 Any Rod Fuel Rods Removed 10 Corner4 Variable Enrichment6 72 Any Variable Enrichment and Axial Blanket6 68 Any Burnable Poison Rod Replaced by Hollow Zircaloy Rod 80 Corner4 Damaged Fuel in MAINE YANKEE FUEL CAN 12 Corner4 Burnup between 45,000 and 50,000 MW D/MTU 90 Periphery5 MAINE YANKEE FUEL CAN As Required Corner4 Inserted Startup Source 4 Corner4 Inserted CEA Finger Tip or ICI String Segment 1 Corner4

1. All spent fuel, including that held in a Maine Yankee fuel can, must conform to the loading limits presented in Tables B2-8 and B2-9 for cool time.

2. The number of fuel assemblies in some categories may vary depending on future fuel inspections.

3. Includes these site specific spent fuel configurations and standard fuel assemblies. Standard fuel assemblies may be loaded in any canister position.

4. Basket corner positions are positions 3, 6, 19, and 22 in Figure B2-1. Corner positions are also periphery positions.

5. Basket periphery positions are positions 1, 2, 3, 6, 7, 12, 13, 18, 19, 22, 23, and 24 in Figure B2-1. Periphery positions include the corner positions.

6. Variably enriched fuel assemblies have a maximum burnup of less than 30,000 MW D/MTU and enrichments greater than 1.9 wt %. The minimum required cool time for these assemblies is 5 years.

Certificate of Compliance No. 1015 B2-14 Renewed Amendment No. 2 Approved Contents B 2.0

Table B2-7 Maine Yankee Site Specific Fuel Limits

A. Allowable Contents

1. Combustion Engineering 14 x 14 PWR INTACT FUEL ASSEMBLIES meeting the specifications presented in Tables B2-1, B2-2 and B2-4.

2. PW R INTACT FUEL ASSEMBLIES may contain inserted Control Element Assemblies (CEA), In-Core Instrument (ICI) Thimbles or CEA Plugs. CEAs or CEA Plugs may not be inserted in damaged fuel assemblies, consolidated fuel assemblies or assemblies with irradiated stainless steel replacement rods. Fuel assemblies with a CEA or CEA Plug inserted must be loaded in a Class 2 CANISTER and cannot be loaded in a Class 1 CANISTER. Fuel assemblies without an inserted CEA or CEA Plug, including those with inserted ICI Thimbles, must be loaded in a Class 1 CANISTER.

3. PW R INTACT FUEL ASSEMBLIES with fuel rods replaced with stainless steel or Zircaloy rods or with Uranium oxide rods nominally enriched up to 1.95 wt %.

4. PW R INTACT FUEL ASSEMBLIES with fuel rods having variable enrichments with a maximum fuel rod enrichment up to 4.21 wt % 235U and that also have a maximum planar average enrichment up to 3.99 wt % 235U.

5. PWR INTACT FUEL ASSEMBLIES with annular axial end blankets. The axial end blanket enrichment may be up to 2.6 wt % 235U.

6. PWR INTACT FUEL ASSEMBLIES with solid filler rods or burnable poison rods occupying up to 16 of 176 fuel rod positions.

7. PW R INTACT FUEL ASSEMBLIES with one or more grid spacers missing or damaged such that the unsupported length of the fuel rods does not exceed 60 inches or with end fitting damage, including damaged or missing hold-down springs, as long as the assembly can be handled safely by normal means.

B. Allowable Contents requiring preferential loading based on shielding, criticality or thermal constraints. The preferential loading requirement for these fuel configurations is as described in Table B2-6.

1. PWR INTACT FUEL ASSEMBLIES with up to 176 fuel rods missing from the fuel assembly lattice.

2. PWR INTACT FUEL ASSEMBLIES with a burnup between 45,000 and 50,000 MW D/MTU meeting the requirements of Section A 5.7(1).

3. PW R INTACT FUEL ASSEMBLIES with a burnable poison rod replaced by a hollow Zircaloy rod.

Certificate of Compliance No. 1015 B2-15 Renewed Amendment No. 2 Approved Contents B 2.0

Table B2-7 Maine Yankee Site Specific Fuel Limits (continued)

4. INTACT FUEL ASSEMBLIES with a start-up source in a center guide tube. The assembly must be loaded in a basket corner position and must be loaded in a Class 1 CANISTER. Only one (1) start-up source may be loaded in any fuel assembly or any CANISTER.

5. PWR INTACT FUEL ASSEMBLIES with CEA ends (fingertips) and/or ICI segment inserted in corner guide tube positions. The assembly must also have a CEA plug installed. The assembly must be loaded in a basket corner position and must be loaded in a Class 2 CANISTER.

6. INTACT FUEL ASSEMBLIES may be loaded in a MAINE YANKEE FUEL CAN.

7. FUEL enclosed in a MAINE YANKEE FUEL CAN. The MAINE YANKEE FUEL CAN can only be loaded in a Class 1 CANISTER. The contents that must be loaded in the MAINE YANKEE FUEL CAN are:

a) PW R fuel assemblies with up to two INTACT or DAMAGED FUEL rods inserted in each fuel assembly guide tube or with up to two burnable poison rods inserted in each guide tube. The rods inserted in the guide tubes cannot be from a different fuel assembly. The maximum number of rods in the fuel assembly (fuel rods plus inserted rods, including burnable poison rods) is 176.

b) A DAMAGED FUEL ASSEMBLY with up to 100% of the fuel rods classified as damaged and/or damaged or missing assembly hardware components. A DAMAGED FUEL ASSEMBLY cannot have an inserted CEA or other non-fuel component.

c) Individual INTACT or DAMAGED FUEL rods in a rod type structure, which may be a guide tube, to maintain configuration control.

d) FUEL DEBRIS consisting of fuel rods with exposed fuel pellets or individual intact or partial fuel pellets not contained in fuel rods.

Certificate of Compliance No. 1015 B2-16 Renewed Amendment No. 2 Approved Contents B 2.0

Table B2-7 Maine Yankee Site Specific Fuel Limits (continued)

e) CONSOLIDATED FUEL lattice structure with a 17 x 17 array formed by grids and top and bottom end fittings connected by four solid stainless steel rods. Maximum contents are 289 fuel rods having a total lattice weight 2,100 pounds. A CONSOLIDATED FUEL lattice cannot have an inserted CEA or other non-fuel component. Only one CONSOLIDATED FUEL lattice may be stored in any CANISTER.

f) HIGH BURNUP FUEL assemblies not meeting the criteria of Section A 5.7(1).

C. Unenriched fuel assemblies are not authorized for loading.

D. A canister preferentially loaded in accordance with Table B2-8 may only contain fuel assemblies selected from the same loading pattern.

Certificate of Compliance No. 1015 B2-17 Renewed Amendment No. 2 Approved Contents B 2.0 Table B2-8 Loading Table for Maine Yankee CE 14 x 14 Fuel with No Non-Fuel Material -

Required Cool Time in Years Before Assembly is Acceptable

Burnup £ 30 GWD/MTU - Minimum Cool Time [years] for 1 Enrichment Standard 2Pref (0.958i) Pref (0.958p) Pref (1.05i) Pref (1.05p) 1.9 £ E < 2.1 55 5 5 5 2.1 £ E < 2.3 55 5 5 5 2.3 £ E < 2.5 55 5 5 5 2.5 £ E < 2.7 55 5 5 5 2.7 £ E < 2.9 55 5 5 5 2.9 £ E < 3.1 55 5 5 5 3.1 £ E < 3.3 55 5 5 5 3.3 £ E < 3.5 55 5 5 5 3.5 £ E < 3.7 55 5 5 5 3.7 £ E £ 4.2 55 5 5 5 30 < Burnup £ 35 GWD/MTU - Minimum Cool Time [years] for Enrichment Standard 2Pref (0.958i) Pref (0.958p) Pref (1.05i) Pref (1.05p) 1.9 £ E < 2.1 55 5 5 5 2.1 £ E < 2.3 55 5 5 5 2.3 £ E < 2.5 55 5 5 5 2.5 £ E < 2.7 55 5 5 5 2.7 £ E < 2.9 55 5 5 5 2.9 £ E < 3.1 55 5 5 5 3.1 £ E < 3.3 55 5 5 5 3.3 £ E < 3.5 55 5 5 5 3.5 £ E < 3.7 55 5 5 5 3.7 £ E £ 4.2 55 5 5 5 35 < Burnup £ 40 GWD/MTU - Minimum Cool Time [years] for Enrichment Standard 2Pref (0.958i) Pref (0.958p) Pref (1.05i) Pref (1.05p) 1.9 £ E < 2.1 77 6 15 5 2.1 £ E < 2.3 66 6 15 5 2.3 £ E < 2.5 66 5 14 5 2.5 £ E < 2.7 55 5 14 5 2.7 £ E < 2.9 55 5 14 5 2.9 £ E < 3.1 55 5 6 5 3.1 £ E < 3.3 55 5 6 5 3.3 £ E < 3.5 55 5 6 5 3.5 £ E < 3.7 55 5 6 5 3.7 £ E £ 4.2 55 5 6 5

1. Cool times for preferential loading of fuel assemblies with a decay heat of either 0.958 or 1.05 kW per assembly, loaded in either interior (i) or periphery (p) basket positions. All of the fuel assemblies in a canister must be selected using the same preferential loading pattern (Standard, 0.958 kW or 1.05 kW).

2. Fuel assemblies with cool times from 5 to 7 years must be preferentially loaded based on cool time, with fuel with the shortest cool time in the basket interior, in accordance with Section B2.1.2.

Certificate of Compliance No. 1015 B2-18 Renewed Amendment No. 2 Approved Contents B 2.0

Table B2-8 Loading Table for Maine Yankee CE 14 x 14 Fuel with No Non-Fuel Material -

Required Cool Time in Years Before Assembly is Acceptable (continued)

40 < Burnup £ 45 GWD/MTU - Minimum Cool Time [years] for 1 Enrichment Standard 2Pref(0.958i)Pref(0.958p)Pref(1.05i) Pref(1.05p) 1.9 £ E < 2.1 11207Not Allowed 6 2.1 £ E < 2.3 9157Not Allowed 6 2.3 £ E < 2.5 8156Not Allowed 6 2.5 £ E < 2.7 8156Not Allowed 6 2.7 £ E < 2.9 8146Not Allowed 6 2.9 £ E < 3.1 8146Not Allowed 6 3.1 £ E < 3.3 7146Not Allowed 5 3.3 £ E < 3.5 6146Not Allowed 5 3.5 £ E < 3.7 6136Not Allowed 5 3.7 £ E £ 4.2 6136Not Allowed 5 45 < Burnup £ 50 GWD/MTU - Minimum Cool Time [years] for Enrichment StandardPref(0.958i)Pref(0.958p) Pref(1.05i) Pref(1.05p) 1.9 £ E < 2.1 Not AllowedNot Allowed 8 Not Allowed 7 2.1 £ E < 2.3 Not AllowedNot Allowed 8 Not Allowed 7 2.3 £ E < 2.5 Not AllowedNot Allowed 8 Not Allowed 7 2.5 £ E < 2.7 Not AllowedNot Allowed 8 Not Allowed 7 2.7 £ E < 2.9 Not AllowedNot Allowed 8 Not Allowed 7 2.9 £ E < 3.1 Not AllowedNot Allowed 8 Not Allowed 7 3.1 £ E < 3.3 Not AllowedNot Allowed 7 Not Allowed 7 3.3 £ E < 3.5 Not AllowedNot Allowed 7 Not Allowed 6 3.5 £ E < 3.7 Not Allowed Not Allowed 7 Not Allowed 6 3.7 £ E £ 4.2 Not Allowed Not Allowed 7 Not Allowed 6

1. Cool times for preferential loading of fuel assemblies with a decay heat of either 0.958 or 1.05 kw per assembly, loaded in either interior (i) or periphery (p) basket positions. All of the fuel assemblies in a canister must be selected using the same preferential loading pattern (Standard, 0.958 kW or 1.05 kW ).

2. Fuel assemblies with cool times from 5 to 7 years must be preferentially loaded based on cool time, with fuel with the shortest cool time in the basket interior, in accordance with Section B2.1.2.

Certificate of Compliance No. 1015 B2-19 Renewed Amendment No. 2 Approved Contents B 2.0 Table B2-9 Loading Table for Maine Yankee CE 14 x 14 Fuel Containing CEA Cooled to Indicated Time

£ 30 GWD/MTU Burnup - Minimum Cool Time in Years for Enrichment No CEA5 Year10 Year15 Year20 Year (Class 1) CEA CEA CEA CEA 1.9 £ E < 2.1 55555 2.1 £ E < 2.3 55555 2.3 £ E < 2.5 55555 2.5 £ E < 2.7 55555 2.7 £ E < 2.9 55555 2.9 £ E < 3.1 55555 3.1 £ E < 3.3 55555 3.3 £ E < 3.5 55555 3.5 £ E < 3.7 55555 3.7 £ E £ 4.2 55555 30 < Burnup £ 35 GWD/MTU - Minimum Cool Time in Years for Enrichment No CEA5 Year10 Year15 Year20 Year (Class 1) CEA CEA CEA CEA 1.9 £ E < 2.1 55555 2.1 £ E < 2.3 55555 2.3 £ E < 2.5 55555 2.5 £ E < 2.7 55555 2.7 £ E < 2.9 55555 2.9 £ E < 3.1 55555 3.1 £ E < 3.3 55555 3.3 £ E < 3.5 55555 3.5 £ E < 3.7 55555 3.7 £ E £ 4.2 55555 35 < Burnup £ 40 GWD/MTU - Minimum Cool Time in Years for Enrichment No CEA5 Year10 Year15 Year20 Year (Class 1) CEA CEA CEA CEA 1.9 £ E < 2.1 77777 2.1 £ E < 2.3 66666 2.3 £ E < 2.5 66666 2.5 £ E < 2.7 55555 2.7 £ E < 2.9 55555 2.9 £ E < 3.1 55555 3.1 £ E < 3.3 55555 3.3 £ E < 3.5 55555 3.5 £ E < 3.7 55555 3.7 £ E £ 4.2 55555 40 < Burnup £ 45 GWD/MTU - Minimum Cool Time in Years for Enrichment No CEA5 Year10 Year15 Year20 Year (Class 1) CEA CEA CEA CEA 1.9 £ E < 2.1 11 11 11 11 11 2.1 £ E < 2.3 99999 2.3 £ E < 2.5 88888 2.5 £ E < 2.7 88888 2.7 £ E < 2.9 88888 2.9 £ E < 3.1 88888 3.1 £ E < 3.3 77888 3.3 £ E < 3.5 66777 3.5 £ E < 3.7 66666 3.7 £ E £ 4.2 66666

Certificate of Compliance No. 1015 B2-20Renewed Amendment No. 2 Design Features B 3.0

B 3.0 DESIGN FEATURES

B 3.1 Site B 3.1.1 Site Location The NAC-UMS SYSTEM is authorized for general use by 10 CFR 50 license holders at various site locations under the provisions of 10 CFR 72, Subpart K.

B 3.2 Design Features Important for Criticality Control B 3.2.1 CANISTER-INTACT FUEL ASSEMBLIES a) Minimum 10B loading in the Boral neutron absorbers:

1. PW R - 0.025g/cm2

2. BW R - 0.011g/cm2 b) Minimum length of INTACT FUEL ASSEMBLY internal structure and bottom end fitting and/or spacers shall ensure the minimum distance to the fuel region from the base of the CANISTER is:

1. PW R - 3.2 inches

2. BW R - 6.2 inches

B 3.3 Codes and Standards The American Society of Mechanical Engineers Boiler and Pressure Vessel Code (ASME Code), 1995 Edition with Addenda through 1995, is the governing Code for the NAC-UMS CANISTER.

The American Concrete Institute Specifications ACI-349 (1985) and ACI-318 (1995) govern the NAC-UMS CONCRETE CASK design and construction, respectively.

The American National Standards Institute ANSI N14.6 (1993) and NUREG-0612 govern the NAC-UMS TRANSFER CASK design, operation, fabrication, testing, inspection and maintenance.

(continued)

Certificate of Compliance No. 1015 B3-1 Renewed Amendment No. 2 Design Features B 3.0

B 3.3.1 Exceptions to Codes, Standards, and Criteria Table B3-1 lists exceptions to the ASME Code for the design of the NAC-UMS SYSTEM.

B 3.3.2 Construction/Fabrication Exceptions to Codes, Standards, and Criteria Proposed alternatives to ASME Code,Section III, 1995 Edition with Addenda, through 1995, including exceptions listed in Specification B3.3.1, may be used when authorized by the Director of the Office of Nuclear Material Safety and Safeguards or designee. The request for such alternatives 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, 1995 Edition with Addenda through 1995, would result in hardship or unusual difficulty without a compensating increase in the level of quality and safety.

Requests for exceptions shall be submitted in accordance with 10 CFR 72.4.

Certificate of Compliance No. 1015 B3-2Renewed Amendment No. 2 Design Features B 3.0

Table B3-1 List of ASME Code Exceptions for the NAC-UMS SYSTEM

Component Reference ASMECode Requirement Exception, Justification and Code Compensatory Measures Section/Article CANISTER NB-1100 Statement ofCANISTER is designed and will be requirements for Code fabricated in accordance with ASME stamping of Code,Section III, Subsection NB to components. the maximum practical extent, but Code stamping is not required.

CANISTER NB-2000 Requirements to beMaterials will be supplied by NAC-supplied by ASME-approved suppliers with Certified approved material Material Test Reports (CMTRs) in supplier. accordance to NB-2000 requirements.

CANISTER NB-4243 Full penetration weldsShield lid and structural lid to Shield Lid required for Category C CANISTER shell welds are not full and joints (flat head to main penetration welds. These field welds Structural Lid shell per NB-3352.3). are performed independently to Welds provide a redundant closure.

Leaktightness of the CANISTER is verified by testing.

CANISTER NB-4421 Requires removal ofStructural lid to CANISTER shell weld Structural Lid backing ring. uses a backing ring that is not Weld removed. The backing ring permits completion of the groove weld; it is not considered in any analyses; and it has no detrimental effect on the CANISTERs function.

CANISTER NB-5230 Radiographic (RT) orRoot and final surface liquid penetrant Vent Port ultrasonic (UT) examination to be performed per Cover and examination required. ASME Code Section V, Article 6, with Drain Port acceptance in accordance with ASME Cover to Code,Section III, NB-5350.

Shield Lid Welds; Shield Lid to Canister Shell W eld

Certificate of Compliance No. 1015 B3-3 Renewed Amendment No. 2 Design Features B 3.0

Table B3-1 List of ASME Code Exceptions for the NAC-UMS SYSTEM (continued)

Component Reference ASMECode Requirement Exception, Justification and Code Compensatory Measures Section/Article CANISTER NB-5230 Radiographic (RT) orThe CANISTER structural lid to Structural Lid ultrasonic (UT) CANISTER shell closure weld is to Shell W eld examination required. performed in the field following fuel assembly loading. The structural lid-to-shell weld will be verified by either ultrasonic (UT) or progressive liquid penetrant (PT) examination. If progressive PT examination is used, at a minimum, it must include the root and final layers and each approximately 3/8 inch of weld depth.

If UT examination is used, it will be followed by a final surface PT examination. For either UT or PT examination, the maximum, undetectable flaw size is demonstrated to be smaller than the critical flaw size.

The critical flaw size is determined in accordance with ASME Code,Section XI methods. The examination of the weld will be performed by qualified personnel per ASME Code Section V, Articles 5 (UT) and 6 (PT) with acceptance per ASME Code Section III, NB-5332 (UT) per 1997 Addenda, and NB-5350 for (PT).

Certificate of Compliance No. 1015 B3-4Renewed Amendment No. 2 Design Features B 3.0

Table B3-1 List of ASME Code Exceptions for the NAC-UMS SYSTEM (continued)

Component Reference ASMECode Requirement Exception, Justification and Code Compensatory Measures Section/Article CANISTER NB-6111 All completed pressureThe CANISTER shield lid to shell weld Vessel and retaining systems shall is performed in the field following fuel Shield Lid be pressure tested. assembly loading. The CANISTER is then pneumatically (air-over-water) pressure tested as defined in Chapter 9 and described in Chapter 8.

Accessibility for leakage inspections precludes a Code compliant hydrostatic test. The shield lid-to-shell weld is also leak tested to the leak-tight criteria of ANSI N14.5. The vent port and drain port cover welds are examined by root and final PT examination. The structural lid enclosure weld is examined by progressive PT or UT and final surface PT.

CANISTER NB-7000 Vessels are required toNo overpressure protection is Vessel have overpressure provided. The function of the protection. CANISTER is to confine radioactive contents under normal, off-normal, and accident conditions of storage. The CANISTER vessel is designed to withstand a maximum internal pressure considering 100% fuel rod failure and maximum accident temperatures.

Certificate of Compliance No. 1015 B3-5 Renewed Amendment No. 2 Design Features B 3.0

Table B3-1 List of ASME Code Exceptions for the NAC-UMS SYSTEM (continued)

Component Reference ASMECode Requirement Exception, Justification and Code Compensatory Measures Section/Article CANISTER NB-8000 States requirements forThe NAC-UMS SYSTEM is marked Vessel nameplates, stamping and identified in accordance with 10 and reports per NCA-CFR 72 requirements. Code stamping 8000. is not required. The QA data package will be in accordance with NACs approved QA program.

CANISTER NG-2000 Requires materials toMaterials to be supplied by NAC-Basket be supplied by ASME approved suppliers with CMTRs in Assembly approved material accordance with NG-2000 supplier. requirements.

CANISTER NG-8000 States requirements forThe NAC-UMS SYSTEM will be Basket nameplates, stamping marked and identified in accordance Assembly and reports per NCA-with 10 CFR 72 requirements. No 8000. Code stamping is required. The CANISTER basket data package will be in accordance with NACs approved QA program.

CANISTER NB-2130/ NG-2130 States requirements forThe NAC-UMS CANISTER and Vessel and certification of material Basket Assembly component materials Basket organizations and are procured in accordance with the Assembly materials to NCA-3861 specifications for materials in ASME Material and NCA-3862, Code Section II with Certified Material respectively. Test Reports. The component materials will be obtained from NAC approved Suppliers in accordance with NACs approved QA program.

Certificate of Compliance No. 1015 B3-6 Renewed Amendment No. 2 Design Features B 3.0

B 3.4 Site Specific Parameters and Analyses This section presents site-specific parameters and analytical bases that must be verified by the NAC-UMS SYSTEM user. The parameters and bases presented in Section B.3.4.1 are those applied in the design basis analysis. The parameters and bases used in the evaluation of SITE SPECIFIC FUEL are presented in the appropriate sections below.

B 3.4.1 Design Basis Site Specific Parameters and Analyses

The design basis site-specific parameters and analyses that require verification by the NAC-UMS SYSTEM user are:

1. The temperature of 76° F is the maximum average yearly temperature. The 3-day average ambient temperature shall be 106°F or less.

2. The allowed temperature extremes, averaged over a 3-day period, shall be greater than -40° F and less than 133°F.

3. The design basis earthquake horizontal and vertical seismic acceleration levels at the top surface of the ISFSI pad are bounded by the values shown:

Horizontal g-level in each of Corresponding Vertical Tw o Orthogonal Directions g-level (upw ard) 0.26g 0.26 x 0.667 = 0.173g

4. The analyzed flood condition of 15 fps water velocity and a height of 50 feet of water (full submergence of the loaded cask) are not exceeded.

5. The potential for fire and explosion shall be addressed, based on site-specific considerations. This includes the condition that the fuel tank of the cask handling equipment used to move the loaded CONCRETE CASK onto or from the ISFSI site contains no more than 50 gallons of fuel.

(continued)

Certificate of Compliance No. 1015 B3-7 Renewed Amendment No. 2 Design Features B 3.0

B 3.4.1 Design Basis Site Specific Parameters and Analyses (continued)

6. In addition to the requirements of 10 CFR 72.212(b)(2)(ii), the ISFSI pad(s) and foundation shall meet the design basis earthquake horizontal and vertical seismic acceleration levels at the top surface of the ISFSI pad as specified in B3.4.1 (3).

7. In cases where engineered features (i.e., berms, shield walls) are used to ensure that requirements of 10 CFR 72.104(a) are met, such features are to be considered important to safety and must be evaluated to determine the applicable Quality Assurance Category on a site specific basis.

8. TRANSFER CASK OPERATIONS shall only be conducted with surrounding air temperatures 0°F.

9. The VERTICAL CONCRETE CASK shall only be lifted by the lifting lugs with surrounding air temperatures 0°F.

Certificate of Compliance No. 1015 B3-8 Renewed Amendment No. 2 Design Features B 3.0

B 3.4.2 Maine Yankee Site Specific Parameters and Analyses

The design basis site-specific parameters and analyses that require verification by Maine Yankee are:

1. The temperature of 76° F is the maximum average yearly temperature. The 3-day average ambient temperature shall be 106°F or less.

2. The allowed temperature extremes, averaged over a 3-day period, shall be greater than -40° F and less than 133°F.

3. The design basis earthquake horizontal and vertical seismic acceleration levels at the top surface of the ISFSI pad are bounded by the values shown:

Horizontal g-level in each of Corresponding Vertical Tw o Orthogonal Directions g-level (upw ard) 0.38g 0.38 x 0.667 = 0.253g

4. The analyzed flood condition of 15 fps water velocity and a height of 50 feet of water (full submergence of the loaded cask) are not exceeded.

5. The potential for fire and explosion shall be addressed, based on site-specific considerations. This includes the condition that the fuel tank of the cask handling equipment used to move the loaded CONCRETE CASK onto or from the ISFSI site contains no more than 50 gallons of fuel.

6. Physical testing shall be conducted to demonstrate that the coefficient of friction between the CONCRETE CASK and ISFSI pad surface is at least 0.5.

(continued)

Certificate of Compliance No. 1015 B3-9 Renewed Amendment No. 2 Design Features B 3.0

B 3.4.2 Maine Yankee Site Specific Parameters and Analyses (continued)

7. In addition to the requirements of 10 CFR 72.212(b)(2)(ii), the ISFSI pad(s) and foundation shall meet the design basis earthquake horizontal and vertical seismic acceleration levels at the top surface of the ISFSI pad as specified in B 3.4.2 (3).

The surface of the ISFSI pad shall have a broom finish or brushed surface as defined in ACI 116R-90 and described in Sections 7.12 and 7.13.4 of ACI 302.1R.

8. In cases where engineered features (i.e., berms, shield walls) are used to ensure that requirements of 10 CFR 72.104(a) are met, such features are to be considered important to safety and must be evaluated to determine the applicable Quality Assurance Category on a site specific basis.

9. TRANSFER CASK OPERATIONS shall only be conducted with surrounding air temperatures 0°F.

Certificate of Compliance No. 1015 B3-10 Renewed Amendment No. 2 Design Features B 3.0

B 3.5 CANISTER HANDLING FACILITY (CHF)

B 3.5.1 TRANSFER CASK and CANISTER Lifting Devices Movements of the TRANSFER CASK and CANISTER outside of the 10 CFR 50 licensed facilities, when loaded with spent fuel are not permitted unless the movements are made with a CANISTER HANDLING FACILITY designed, operated, fabricated, tested, inspected and maintained in accordance with the guidelines of NUREG-0612, Control of Heavy Loads at Nuclear Power Plants and the below clarifications. This Technical Specification does not apply to handling heavy loads under a 10 CFR 50 license.

B 3.5.2 CANISTER HANDLING FACILITY Structure Requirements B 3.5.2.1 CANISTER Station and Stationary Lifting Devices

1. The weldment structure of the CANISTER HANDLING FACILITY shall be designed to comply with the stress limits of ASME Code,Section III, Subsection NF, Class 3 for linear structures. The applicable loads, load combinations, and associated service condition definitions are provided in Table B3-2. All compression loaded members shall satisfy the buckling criteria of ASME Code,Section III, Subsection NF.

2. If a portion of the CANISTER HANDLING FACILITY structure is constructed of reinforced concrete, then the factored load combinations set forth in ACI-318 (1995) for the loads defined in Table B3-2 shall apply.

3. The TRANSFER CASK and CANISTER lifting device used with the CANISTER HANDLING FACILITY shall be designed, fabricated, operated, tested, inspected and maintained in accordance with NUREG-0612, Section 5.1.

(continued)

Certificate of Compliance No. 1015 B3-11Renewed Amendment No. 2 Design Features B 3.0

B 3.5.2.1 CANISTER HANDLING Station and Stationary Lifting Devices (continued)

4. The CHF design shall incorporate an impact limiter for CANISTER lifting and movement if a qualified single failure proof crane is not used. The impact limiter must be designed and fabricated to ensure that, if a CANISTER is dropped, the confinement boundary of the CANISTER would not be breached.

B 3.5.2.2 Mobile Lifting Devices If a mobile lifting device is used as the lifting device, in lieu of a stationary lifting device, it shall meet the guidelines of NUREG-0612, Section 5.1, with the following clarifications:

1. Mobile lifting devices shall have a minimum safety factor of two over the allowable load table for the lifting device in accordance with the guidance of NUREG-0612, Section 5.1.6(1)(a) and shall be capable of stopping and holding the load during a Design Basis Earthquake (DBE) event.

2. Mobile lifting devices shall conform to the requirements of ANSI B30.5, Mobile and Locomotive Cranes, in lieu of the requirements of ANSI B30.2, Overhead and Gantry Cranes.

3. Mobile cranes are not required to meet the requirements of NUREG-0612, Section 5.1.6(2) for new cranes.

Certificate of Compliance No. 1015 B3-12 Renewed Amendment No. 2 Design Features B 3.0 Table B3-2 Load Combinations and Service Condition Definitions for the CANISTER HANDLING FACILITY (CHF) Structure

Load Combination ASME Section III ServiceComment Condition for Definition of Allow able Stress D* All primary load bearing Level A members must satisfy Level A D + S stress limits D + M + W 1 Factor of safety against overturning shall be 1.1 D + F Level D D + E

D + Y

D = Crane hook dead load D* = Apparent crane hook dead load S = Snow and ice load for the CHF site M = Tornado missile load of the CHF site1 W = Tornado wind load for the CHF site1 F = Flood load for the CHF site E = Seismic load for the CHF site Y = Tsunami load for the CHF site

Note:

1. Tornado missile load may be reduced or eliminated based on a PRA for the CHF site.

Certificate of Compliance No. 1015 B3-13 Renewed Amendment No. 2 THIS PAGE INTENTIONALLY LEFT BLANK

ML24151A010

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