Text

Proposed Improved Tech Specs for North Anna ISFSI
	ML20249C721
Person / Time
Site:	North Anna
Issue date:	06/19/1998
From:	; VIRGINIA POWER (VIRGINIA ELECTRIC & POWER CO.)
To:	;
Shared Package
ML20249C717	List: ML20249C716; ML20249C721;
References
	NUDOCS 9807010089
	Download: ML20249C721 (101)
	v • d • e

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l' TECHNICAL SPECIFICATIONS f

FOR NORTH ANNA INDEPENDENT SPENT FUEL STORAGE INSTALLATION (ISFSI) i l

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9907010089 990619 PDR ADOCK 05000338 P

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TABLE OF CONTENTS 1.0 USE AND APPLICATION...................

1.1-1 1.1 Definitions.....................

1.1-1 1.2 Logical. Connectors 1.2-1 1.3 Completion Times 1.3-1 1.4 Frequency......................

1.4-1

. 2.0 FUNCTIONAL AND OPERATING LIMITS.............

2.0-1 2.1 Functional and Operating Limits...........

2.0-1 2.2 Functional and Operating Limits Violations 2.0-1 3.0 LIMITING CONDITION FOR OPERATION (LCO) APPLICABILITY 3.0-1 3.0 SURVEILLANCE REQUIREMENT (SR) APPLICABILITY 3.0-2 3.1 SSSC INTEGRITY 3.1.1-1 i

3.1.1 SSSC Cavity Vacuum Drying Pressure 3.1.1-1 3.1.2 SSSC Helium Backfill Pressure...........

3.1.2-1 3.1.3 SSSC Helium Leak Rate..............

3.1.3-1 L

3.1.4 SSSC Seal : Integrity...............

3.1.4-1 3.1.5 SSSC Maximum Lifting Height...........

3.1.5-1 3.2 SSSC CRITICALITY CONTROL 3.2.1-1 3.2.1 Dissolved Boron Concentration..........

3.2.1-1 3.3 SSSC RADIATION PROTECTION..............

3.3.1-1 3.3.1 SSSC Average Surface Dose Rates.........

3.3.1-1 3.3.2 SSSC Surface Contamination 3.3.2-1 l

3.3.3 ISFSI Perimeter Radiation............

3.3.3-1 Table 3-1 SSSC Model-Dependent Limits.............

3.4-1 l

l 4.0 DESIGN FEATURES......................

4.0-1 4.1 Site 4.0-1 4.1.1 Site Location 4.0-1 4.2 Storage Features 4.0-1 4.2.1 Storage Cask 4.0-1 L

.4.2.2 Storage Capacity 4.0-1 4.2.3 Storage Pad...................

4.0-1 1

L 5.0 ADMINISTRATIVE CONTROLS.................

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5.1 Responsibility 5.1-1 l

5.2 Organization 5.2-1 5.3 Facility Staff Qualifications............

5.3-1 5.4 Procedures 5.4-1 5.5' Programs 5.5-1 j

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Definitions 1.1 l '

'1.0- USE AND APPLICATION l

1.1 Definitions t

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

The' defined terms of this section appear in capitalized type and are applicable throughout these Technical Specifications and Bases, erm Definition-ACTIONS ACTIONS shall be that part of a Specification that prescribes Required Actions.to be taken under designated Conditions within specified Completion Times.

INDEPENDENT. SPENT FUEL The facility within the perimeter fence licensed STORAGE INSTALLATION for storage of spent fuel within SSSCs.

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L LOADING OPERATIONS LOADING OPERATIONS include all licensed activities l

on an SSSC while it is being loaded with fuel assemblies. LOADING OPERATIONS begin when the-first fuel assembly is placed in the SSSC and end when the SSSC is suspended from the transporter.

SEALED SURFACE STORAGE SSSCs are storage containers.for spent. fuel CASKS (SSSCs) approved for use at the ISFSI.

STORAGE OPERATIONS STORAGE OPERATIONS include all licensed activities l

that.are performed at the ISFSI while.an SSSC containing spent fuel.is sitting on a storage' pad

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within the ISFSI' perimeter.

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-TRANSPORT OPERATIONS-TRANSPORT OPERATIONS include all licensed activities performed on an SSSC loaded with one or more fuel assemblies when it is being moved to and from the ISFSI. TRANSPORT OPERATIONS begin when L

the SSSC is first suspended from the' transporter and end when the SSSC is at:its destination and no longer suspended from the transporter.

UNLOADING OPERATIONS

-UNLOADING'0PERATIONS include all licensed i

activities on an SSSC to'be unloaded of the l

contained fuel assemblies. UNLOADING OPERATIONS l+

ibegin when the SSSC isino longer suspended by the L

transporter and end when the last fuel assembly is removed from the SSSC.

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Logical Connectors 1.2 1.0 USE AND APPLICATION 1.2 Logical Connectors PURPOSE The purpose of this section is to explain the meaning of logical connectors.

Logical connectors are used in Technical Specifications (TS) to discriminate between, and yet connect, discrete Conditions, Required Actions, Completion Times.,

Surveillance, and Frequencies. The only logical connectors that appear in TS are AND and 0R. 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 indentions of the logical connectors.

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

EXAMPLES The following examples illustrate the use of logical connectors.

North Anna ISFSI 1.2-1

l Logical Connectors 1.2 1.2 -Logical Connectors l

EXAMPLES EXAMPLE 1.2-1 l

(continued) l ACTIONS CONDITION REQUIRED ACTION COMPLETION TIME A.

LC0 not met.

A.1 Veri fy...

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.

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Logical Connectors 1.2 1.2 Logical Connectors EXAMPLES EXAMPLE 1.2-2 (continued)

ACTIONS CONDITION REQUIRED ACTION COMPLETION TIME A.

LCO not met.

A.1 Stop...

08 A.2.1 Verify...

AND A.2.2.1 Reduce...

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A.2.2.2 Perform...

OR A.3 Remove...

4 This example represents a_more complicated use of logical connectors. Required Actions A.1, A.2, and A.3 are alternative choices, only one of which must be performed as indicated by the use of the logical connector OR and the left justified placement. Any one of these three Actions may be chosen. If A.2 is chosen,-then both A.2.1 and A.2.2 must be performed as indicated by the logical. connector AND.

Required Action A.2.2 is met by performing A.2.2.1 or A.2.2.2. The indented position of the logical connector OR indicates that A.2.2.1 and A.2.2.2 are alternative choices, only one of which must be performed.

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Completion Times 1.3 1.0 USE AND APPLICATION 1.3 Completion Times PURPOSE The purpose of this section is to establish the Completion Time convention and to provide guidance for its use.

BACKGROUND Limiting Conditions for Operation (LCOs) specify the lowest functional capability or performance levels of equipment required for safe operation of the facility. The ACTIONS associated with an LC0 state Conditions that typically describe the ways in which the requirements of the LC0 can fail to be met. Specified with each stated Condition are Required Action (s) and Completion Times (s).

DESCRIPTION The Completion Time is the amount of time allowed for completing a Required Action. It is referenced to the time of discovery of a situation (e.g., equipment or variable not within limits) that requires entering an ACTIONS Condition unless otherwise specified, providing the facility is in a specified condition stated in the Applicability of the LC0.

Required Actions must be completed prior to the expiration of the specified Completion Time. An ACTIONS Condition remains in effect and the Required Actions apply until the Condition no longer exists or the facility is not within the LC0 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.

North Anna ISFSI 1.3-1

Completion Times l

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k 1.3. Completion Times EXAMPLES

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

Conditions.

EXAMPLE 1.3-1 L

ACTIONS CONDITION REQUIRED ACTION COMPLETION TIME B. Required B.1 Perform 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 Perform' Action 36 hours4.166667e-4 days 0.01 hours 5.952381e-5 weeks 1.3698e-5 months B.2.

Condition B has two Required Actions. Each Required Action has its own separate Completion Time. Each Completion Time is referenced to the time that Condition B is entered.

The Required Actions of Condition B are to complete action B.1 within:12 hours 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 actf on B.1 and i

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 6 hours6.944444e-5 days 0.00167 hours 9.920635e-6 weeks 2.283e-6 months , 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 .

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Completion Times 1.3 l

1.3. Completion Times 4

l EXAMPLES EXAMPLE 1.3-2 (continued)

ACTIONS CONDITION REQUIRED ACTION COMPLETION TIME l

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' hours B.2 When a system is determined to not meet the LCO, Condition A is. entered. If the system is not restored within 7 days, Condition B is also entered and the Completion Time clocks-for Required Actions B.1 and 8.2 start. If the system is restored after Condition B is entered, Conditions'A and B are exited, and therefore, the Required Actions of Condition B may be terminated.

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Completion Times 1.3 l

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' EXAMPLES EXAMPLE 1.3-3

-(contjnued)

ACTIONS

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Separate Condition entry is allowed for each component.

CONDITION REQUIRED ACTION-COMPLETION TIME A. LCO not met.-

A.1 Restore compliance 4 hours4.62963e-5 days 0.00111 hours 6.613757e-6 weeks 1.522e-6 months j

with LCO.

j B. Required B 1 Complete action 6-hours Action and B.1 associated I

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 e

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 separat'ely for each component, and Completion Times tracked on a per component-basis. When a component is determined to not meet the LCO, Condition A is entered and its Completion Time starts. If i.

subsequent components are determined to not meet the LCO, j

Condition A is entered for each: component and separate 1

Completion. Times start and are tracked for each component.

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Completion Times 1.3 l

l 1.3 Completion Times IMEDIATE When "Immediately" is used as a Completion Time, the COMPLETION Required Action should be pursued without delay and in a TIME.

controlled manner.

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Frequency 1.4 1.0 USE AND APPLICATION 1.4 Frequency

. PURPOSE The purpose of this section is to define the proper use and application of Frequency requirements.

l 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 l.

understanding of the correct application of the specified L

Frequency is necessary for compliance with the SR.

l The'"specified Frequency" is referred to throughout this l-section and each of the Specifications of Section 3.0, l-Surveillance Requirement (SR) Applicability. The "specified l

Frequency" consists of the 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 LC0 is within its Applicability, represent potential SR 3.0.4 conflicts. To avoid these ' conflicts, the L

SR.(i.e..'the Surveillance or..the Frequency) is stated such that.it is only '_' required".'when it can be and should be

. performed. With an SR satisfied, SR 3.0.4 imposes no

-restriction.

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Frequency 1.4 1.4 Frequency EXAMPLES The following examples illustrate the various ways that Frequencies are specified.

EXAMPLE 1.4-1 SURVEILLANCE REQUIREMENTS SURVEILLANCE FREQUENCY Verify pressure within limit.

12 hours1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months Exam)1e 1.4-1 contains the type of SR most often encountered in t1e 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 , an extension of the time interval to 1.25 times the interval specified in the Frequency is allowed by SR 3.0.2 for operational flexibility. The measurement of this interval continues at all times, even when the SR is not required to be met per SR 3.0.1 (such as when the equipment or a variable is 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 LC0 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 LC0 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.

North Anna ISFSI 1.4-2

Frequency 1.4 1.4 Frequency EXAMPLES EXAMPLE 1.4-2 (continued)

SURVEILLANCE REQUIREMENTS SURVEILLANCE FREQUENCY Verify flow is within limits.

Once within 12 hours1.388889e-4 days 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.

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Functional and Operating Limits 2.0 l

2.0 FUNCTIONAL AND OPERATING LIMITS l

2.1 Functional and Operating Limits 2.1.1 Fuel To Be Stored At The ISFSI The spent nuclear fuel to be stored in SSSCs at the North Anna ISFSI shall meet the following requirements:

a. Only fuel irradiated at the North Anna Power Station Unit Nos.

1 and 2 may be used.

b. Fuel assemblies shall be intact. Partial fuel assemblies, that is, fuel assemblies from which fuel rods are missing must not l

be loaded in SSSCs unless duniny fuel rods are used to displace I

an amount of water equal to that displaced by the original fuel j

rods.

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c. Fuel assemblies known or suspected to have structural defects sufficiently severe to adversely affect fuel handling and transfer capability shall not be loaded into SSSCs for storage.

d. Fuel assemblies known or suspected to have cladding defects in excess of those approved for the SSSC design shall not be loaded into SSSCs for. storage.

e. Fuel assemblies shall meet the limits for initial enrichment, average burnup, cooling time after reactor discharge, decay heat, gamma and neutron source, fuel assembly design, and fuel assembly inserts as specified in Table 2.1-1, 2.2 Functional and Operating Limits Violations If any Functional and Operating Limits of 2.1.1 are violated, the following actions shall be completed:

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

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

.2.2.3 Within 30 days, submit a special report which describes the cause l

of the' violation and actions taken to restorn compliance and prevent recurrence.

North Anna ISFSI 2.0-1

Functional and Operating Limits 2.0 Table 2.1-1 (page 1 of 1)

Fuel Assembly Limits SSSC MODEL LIMIT

1. TN-32

a. Initial Enrichment 5 3.85 wt. %-

b. Averagt Burnup 5 40,000 MWD /MTU

c. Cooling Time After Discharge

> 7 years d.-Decay Heat-50.847kw/ assembly

e. Gamma Source per Cask 52.31E17 photons /second

f. Neutron Source per Cask 54.83E9 neutrons /second

9. Fuel Assembly Design Westinghouse 17x17 Standard Westinghouse 17x17 Vantage SH

h. Fuel Assembly Inserts Fuel assemblies may not contain either burnable poison rod assemblies (BPRAs) or thimble plugging devices (TPDs).

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LC0 Applicability 3.0 3.0 LIMITING CONDITION FOR OPERATION (LCO) APPLICABILITY LC0 3.0.1 LCOs shall be met during specified conditions in the Applicability, except as provided in LC0 3.0.2.

LC0 3.0.2 Upon discovery of a failure to meet an LCO, the Required Actions of the associated Conditions shall be met, except as provided in LC0 3.0.5.

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If the LC0 is met or is no longer applicable prior to l

expiration of the specified Completion Time (s),

completion of the Required Action (s) is not required, unless otherwise stated.

1 LCO 3.0.3 Not applicable to an ISFSI LC0 3.0.4 When an LC0 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 SSSC.

LC0 3.0.5 Equipment removed from service or not in service in i

compliance with ACTIONS may be returned to service under l

administrative control solely to perform testing required to demonstrate it meets the LC0 or that other equipment meets the LCO. This is an exception to LC0 3.0.2 for the system returned to service under administrative control to perform the testing.

l LC0 3.0.6 Not applicable to an ISFSI

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LC0 3.0.7 Not applicable to an ISFSI I

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l SR Applicability 3.0 3.0 SURVEILLANCE REQUIREMENT (SR) APPLICABILITY SR 3.0.1 SRs shall be met during the specified conditions in the Applicability for individual LCOs, unless otherwise stated in the SR. Failure to meet a Surveillance, whether such failure is experienced during the performance of the Surveillance or between performances of the Surveillance, shall be failure to meet the LCO. Failure to perform a Surveillance within the spectiied Frequency shall be failure to meet the LC0 except as provided in SR 3.0.3.

S;rveillances do not have to be performed on equipment or variables outside specified limits.

I 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 LC0 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 I

delay period is permitted to allow performance of the Surveillance.

If the Surveillance is not performed within the delay i

period, the LC0 must immediately be declared not met, and the applicable Condition (s) must be entered.

J When the Surveillance is performed within the delay j

period and the Surveillance is not met, the LC0 must immediately be declared not met, and the applicable l

Condition (s) must be entered.

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SR Applicability 3.0 l

3.0 SR APPLICABILITY SR; 3.0.4-

' Entry into a specified condition in the Applicability of an LCO shall not be made unless the LC0's Surveillance 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 an SSSC.

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SSSC Cavity Vacuum Drying Pressure 3.1.1 3.1 SSSC INTEGRITY 3.1.1 SSSC Cavity Vacuum Drying Pressure LC0 3.1.1 The SSSC cavity vacuum drying pressure shall meet the limit specified in Table 3-1 for the applicable SSSC design.

APPLICABILITY:-

During LOADING OPERATIONS.

ACTIONS

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

Separate Condition entry is allowed for each SSSC.

CONDITION REQUIRED ACTION COMPLETION TIME A.

SSSC cavity. vacuum A.1 Establish SSSC cavity 48 hours5.555556e-4 days 0.0133 hours 7.936508e-5 weeks 1.8264e-5 months Ldrying pressure limit vacuum drying pressure not met, within limit.

B.

Required Action and B.1 Remove all fuel 7 days Associated Completion assemblies from the Time not met.

SSSC.

j SURVEILLANCE REQUIREMENTS SURVEILLANCE FREQUENCY SR 3.1.1.1 Verify SSSC cavity vacuum drying pressure Within 48 hours5.555556e-4 days 0.0133 hours 7.936508e-5 weeks 1.8264e-5 months j

is within limit.

after removing i

SSSC from the spent fuel pool 1

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SSSC Helium Backfill Pressure 3.1.2 3.1,SSSC' INTEGRITY 3.1.2 SSSC Helium Backfill Pressure i

LC0 3.1.2 The SSSC helium backfill pressure shall meet the limit specified in Table 3-1 for the applicable SSSC design.

APPLICABILITY:

During LOADING'0PERATIONS.

ACTIONS

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

Separate Condition entry is allowed for each SSSC.

CONDITION REQUIRED ACTION COMPLETION TIME A.

SSSC helium backfill A.1 Establish SSSC helium 48 hours5.555556e-4 days 0.0133 hours 7.936508e-5 weeks 1.8264e-5 months pressure limit not backfill pressure

met.

within limit.

B.

-Required Action and' B.1 Remove all fuel 7 days Associated Completion assemblies from the Time not met.

SSSC.

SURVEILLANCE REQUIREMENTS SURVEILLANCE FREQUENCY

-SR 3.1.2.1 Verify SSSC helium backfill pressure is Within 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months within limit.

after verifying SSSC cavity vacuum drying pressure is within limit l-l

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SSSC Helium Leak Rate 3.1.3 3.1.SSSC INTEGRITY 3.1.3 SSSC Helium Leak Rate LC0 3.1.3 The SSSC helium leak rate for all closure seals shall not exceed the limit specified in Table 3-1 for the applicable SSSC design.

APPLICABILITY:

During LOADING OPERATIONS.

ACTIONS

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

Separate Condition entry is allowed for each SSSC.

CONDITION REQUIRED ACTION COMPLETION TIME A..SSSC helium leak rate A.1 Establish SSSC helium 48 hours5.555556e-4 days 0.0133 hours 7.936508e-5 weeks 1.8264e-5 months limit not met.

leak rate within limit.

B..

Required Action atid B.1 Remove all fuel 7 days.

Associated Completion assemblies from the Time not met.

SSSC.

l-SURVEILLANCE REQUIREMENTS SURVEILLANCE FREQUENCY SR 3.1.3.1 Verify SSSC helium leak rate is within Within 48 hours5.555556e-4 days 0.0133 hours 7.936508e-5 weeks 1.8264e-5 months limit.

after verifying SSSC helium backfill pressure is within limit North Anna ISFSI'-

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SSSC Seal Integrity 3.1.4

'3.f SSSC INTEGRITY 3.1.4 SSSC Seal Integrity

.LCO 3.1.4.

The SSSC seal integrity shall be maintained.

APPLICABILITY:

During STORAGE OPERATIONS.

ACTIONS

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

Separate Condition entry is allowed for each SSSC.

CONDITION' REQUIRED ACTION COMPLETION TIME A.

SSSC seal integrity A.1 Restore SSSC seal 30 days not maintained..

integri ty.

B.

Required Action and B.1 Remove all. fuel 7 days Associated Completion-assemblies from the Time not met.

SSSC.

SURVEILLANCE REQUIREMENTS SURVEILLANCE FREQUENCY 4

SR 3.1.4.1 Verify SSSC seal integrity in accordance 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months with Table,3-1.

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li SSSC Maximum Lifting Height 3.1.5 p-I K

~3.11-'SSSC INTEGRITY L

3.1.5-SSSC Maximum Lifting Height LC0 3.1.5

' The. SSSC lifting height shall not exceed the limit in Table 3-1.

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i APPLICABILITY:

During TRANSPORT OPERATIONS.

ACTIONS

=

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

Separate Condition entry is allowed for each SSSC.

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CONDITION REQUIRED ACTION COMPLETION TIME A.

SSSC lifting height A.1 Initiate-action to

'Immediately higher than limit.

restore SSSC lifting height within. limit.

SURVEILLANCE REQUIREMENTS SURVEILLANCE-FREQUENCY

.SR 3.1.5.1

- Verify SSSC lifting height within limit.

Prior to movement of SSSC J'

with transporter I

North Anna.ISFSI 3.1.5-1

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Dissolved Boron Concentration 3.2.1 3.2 SSSC CRITICALITY. CONTROL 3.2.1 Dissolved Boron Concentration LCO. 3.2.1 The dissolved boron concentration of the spent fuel pool and of the water added to the cavity of an SSSC shall be within limits specified in Table 3-1.

APPLICA3fLITY:

During LOADING'0PERATIONS, During UNLOADING OPERATIONS.

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-ACTIONS CONDITION REQUIRED ACTION COMPLETION TIME A.

Dissolved boron-A.1 Suspend loading of Immediately l

concentration limit fuel assemblies into not met.

SSSC.

AND' A.2 Remove all fuel 12 hours1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months .

assemblies from SSSC.

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J North Anna ISFSI' 3 '. 2.1-1 i

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Dissolved Boron Concentration 3.2.1

SURVEILLANCE REQUIREMENTS SURVEILLANCE FREQUENCY SR 3.2.1.1 Verify dissolved boron concentration limit Within 4 hours4.62963e-5 days 0.00111 hours 6.613757e-6 weeks 1.522e-6 months in spent fuel pool water and water to be prior to added to the SSSC cavity'is met using two commencing independent measurements.

LOADING OPERATIONS AND 48 hours5.555556e-4 days 0.0133 hours 7.936508e-5 weeks 1.8264e-5 months j

thereaf ter while the SSSC is in the spent fuel pool.

1 SR 3.2.1.2 Verify dissolved boron concentration limit Within 4 hours4.62963e-5 days 0.00111 hours 6.613757e-6 weeks 1.522e-6 months in spent fuel pool water and water to be prior to added to the SSSC cavity is met using two flooding SSSC independent measurements.

during uNL0ADING OPERATIONS AND 48 hours5.555556e-4 days 0.0133 hours 7.936508e-5 weeks 1.8264e-5 months thereaf ter while the SSSC is in the spent fuel pool.

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L North Anna ISFSI 3.2.1-2 L_=____-.--_._--_

SSSC Average Surface Dose Rates 3.3.1 3.3 SSSC RADIATION PROTECTION 3.3.1 SSSC Average Surface Dose Rates LCO 3.3.1 The average surface dose rates of each SSSC shall not exceed:

a.129 mrem / hour (neutron + gamma)ontheside;and b.55 mrem / hour (neutron + gamma)onthetop.

APPLICABILITY:

During LOADING OPERATIONS.

ACTIONS

- - - - N O T E - - - - - - -

Separate Condition entry is allowed for each SSSC.

CONDITION REQUIRED ACTION COMPLETION TIME A.

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

loading.

AND A.2 Perform analysis to Prior to verify compliance with TRANSPORT the ISFSI offsite OPERATIONS radiation protection requirements of 10 CFR Part 20 and 10 CFR Part 72.

B.

Required Action and B.1 Remove all fuel 7 days Associated Completion assemblies from the Time not met.

SSSC.

l North Anna ISFSI 3.3.1-1

SSSC Average Surface Dose Rates 3.3.1 l

SURVEILLANCE REQUIREMENTS SURVEILLANCE FREQUENCY.

SR'. 3.3.1.1 Verify average surface dose rates of SSSC-Prior to containing fuel assemblies are within TRANSPORT

. limits.

OPERATIONS i

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1 North Anna ISFSI-3.3.1-2

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SSSC Surface Contamination 3.3.2 3.3 SSSC RADIATION PROTECTION-

'3.3.2 SSSC Surface Contamination LC0' 3.3.2-L Removable contamination on the SSSC exterior surfaces shall not exceed:

2 a.1000dpm/100cm from beta and gamma sources; and 2

b.20dpm/100cm from. alpha sources.

APPLICABILITY:

During LOADING OPERATIONS.

ACTIONS

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

Separate Condition entry is allowed for each SSSC.

CONDITION REQUIRED ACTION COMPLETION TIME A.

SSSC removable surface.

A.1 Restore SSSC removable Prior to contamination limits surface contamination TRANSPORT q

not met.

to.within limits.

OPERATIONS' SURVEILLANCE REQUIREMENTS SURVEILLANCE FREQUENCY SR: "3.3.2.1 Verify that' the removable contamination on Prior to exterior surfaces of SSSC containing fuel TRANSPORT assemblies is within limits.

OPERATIONS l

North: Anna ISFSI 3.3.2-1

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ISFSI Perimeter Radiation 3.3.3 3.3 SSSC RADIATION PROTECTION 3.3.3 ISFSI Perimeter Radiation LCO 3.3.3 The ISFSI's contribution to the radiation doses (neutron + gamma) at the ISFSI perimeter fence shall not exceed the limits provided in Figure 3.3.3-1.

APPLICABILITY:

During STORAGE.0PERATIONS.

~ ACTIONS CONDITION REQUIRED ACTION COMPLETION TIME

.A.

. ISFSI-perimeter A.1 Initiate action to Immediately radiation not within restore ISFSI limits.

perimeter radiation to within limits.

- SURVEILLANCE REQUIREMENTS SURVEILLANCE FREQUENCY SR -3.3.3.1

Verify (neutron + gamma) at ISFSI perimeter ISFSI's contribution to radiation 92 days doses

-fence does not exceed the specified limits.

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' North' Anna ISFSI.

3.3.3-1.

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ISFSI Perimeter Radiation 3.3.3 North Fence i

PERIMETER FENCE j

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(, PAD '3

(, PAD *1

4. PAD *2 4

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M o.o West 6

East

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Fence l

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l 200' 150' 200*

20e*

South Fence West Fence Limit:

0.327 mrem / Hour North Fence Limit: 0.160 mrem / Hour East Fence Limit:

1.020 mrem / Hour South Fence Limit: 0.609 mrem / Hour Figure 3.3.3-1 (page 1 of 1)

ISFSI Perimeter Radiation Limits North Anna ISFSI 3.3.3-2

SSSC Model-Dependent Limits Table 3-1 Table 3-1 (page 1 of 1)

SSSC Model-Dependent Limits SSSC MODEL LIMITS

-1. TN-32

a. Cavity Vacuum Drying Pressure-5 3 mbar held for 10 minutes

b. Helium Backfill Pressure 2230 mbar 100 mbar

c. Helium Leak Rate 5 1.0 X 10-5 mbar-liter /sec

d. Seal Integrity Verification Inter-Seal Pressure 2 3100 mbar

e. Dissolved Boron Concentration 2 2000 ppm I

f. Maximum Lifting Height eighteen inches l

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l Design Features 4.0 4.0 DESIGN FEATURES I

4.1 Site 4.1.1 Site Location The North Anna ISFSI is located approximately 2000 feet southwest

-of the North Anna Power Station Units 1 and 2 protected area and within the boundaries of the North Anna site. The North Anna site is located in the north-central portion of Virginia in Louisa County and is approximately 40 miles north-northwest of Richmond,

.36 miles east of Charlottesville; 22 miles southwest'of Fredericksburg; and 70 miles southwest of Washington, D.C. The site is on a peninsula on the southern shore of Lake Anna at the end of State Route 700.

4.2 Storage Features

.1 4.2.1 Storage Cask The North Anna ISFSI is licensed to store spent fuel in the TN-32 dry storage cask.

4.2.2 Storage Capacity The' total storage capacity of the North Anna ISFSI is limited to 839.04 metric tons uranium.

4.2.3 Storage Pad The North Anna ISFSI storage pads are reinforced concrete, with nominal dimensions of 224 feet x 32 feet x 2 feet thick with a 40-foot ramp on each end for vehicle access. Each pad is designed to store 28 SSSCs arranged in two rows. The SSSCs in each row will be spaced a nominal 16 feet apart center to center. Each row of SSSCs will be spaced a nominal 16 feet apart center to center.

The facility will have up to three storage pads.

North Anna ISFSI 4.0-1 l

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Responsibility 5.1 5.0~ ADMINISTRATIVE CONTROLS

.5.1 Responsibility

-5.1.1 The plant manager shall be responsible for overall ISFSI operation and

.shall delegate in writing the succession to this responsibility during his absence.

The plant manager or his designee shall approve, prior to 4

implementation,; each proposed test, ' experiment or modification to systems or equipment that affects nuclear safety.-

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North Anna'ISFSI 5.1-1

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Organization 5.2 1

5.0 ADMINISTRATIVE CONTROLS 5.2 Organization 5.2.1 Onsite and Offsite Organizations Onsite and offsite organizations shall be established for facility operation and corporate management, respectively. The onsite and offsite organizations shall include the positions for activities affecting safety of the ISFSI.

a. Lines of authority, responsibility, and communication shall be defined and established throughout highest management levels, intermediate levels, and all operating organization positions. These relationships shall be documented and updated, as appropriate, in organization charts, functional descriptions of departmental responsibilities and relationships, and job descriptions for key personnel positions, or in equivalent forms of documentation. These requirements, including the plant-specific titles of those personnel fulfilling the responsibilities of the positions delineated in these Technical Specifications, shall be documented in the Safety Analysis Report or the Virginia Electric and Power Company Operational Quality' Assurance Program Topical Report;

b. The plant manager shall be. responsible for overall safe operation of the facility and shall have control over those onsite attivities necessary for safe operation and maintenance of the facility;

c. The responsible corporate executive shall have corporate responsibility for overall facility nuclear safety and shall take any measures needed to ensure acceptable performance of the staff in operating, maintaining, and providing technical support to the facility to ensure nuclear safety; and

d. The individuals who train the operating staff, carry out health physics, or perform quality assurance functions may report to the appropriate.onsite manager; however, these individuals shall have sufficient organizational freedom to ensure their independence from operating pressures.

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North Anna ISFSI 5.2-1 H

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Facility Staff Qualifications 5.3 5.0 ADMINISTRATIVE CONTROLS 5.3 Facility Staff Qualifications 5.3.1 Each member of the facility staff shall meet or exceed the minimum qualifications of ANS 3.1 (12/79 Draft) for comparable positions except that the Superintendent - Radiological Protection shall meet or exceed i

the qualifications of Regulatory Guide 1.8, September 1975. Additional exceptions are specified in the Virginia Electric and Power Company Operational Quality Assurance Program Topical Report.

North Anna ISFSI 5.3-1

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Procedures 5.4

~5.0 ADMINISTRATIVE CONTROLS

'5.4 Procedures 5.4.1 Written procedures shall be established, implemented, and maintained covering the following activities:

a. Administrative controls; i

b. Routine ISFSI operations;

c. Alarm and annunciator response;

d. Emergency' operations;

e. Design control and facility change.or modification;

f. Control of surveillance and tests;

g. Control of special processes;

h. Maintenance;

-1. Health physics, including ALARA practices;

j. Special nuclear material accountability;

.k. Quality assurance, inspection, and audits;

1. Physical security and safeguards;

m. Records: management;

n. Reporting;.and.

o. All programs specified in Specification 5.5.

The above procedures may be common'with the North Anna Power Station procedures provided that all ISFSI requirements are met.

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Intentionally Blank

Programs 5.5 I'

5.0 ADMINISTRATIVE CONTROLS L

5.5 Programs l

l-The following programs shall be established, implemented, and maintained.

l 5.5.1 Technical Specifications (TS) Bases Control Program l

This program provides a means for processing changes to the Bases of j

these Technical Specifications.

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a. Changes to the Bases of the TS shall be made under appropriate administrative controls and reviews.

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b. Licensees may make changes to Bases without prior NRC approval provided the changes do not involve either of the following:

1. A change in the TS incorporated in the license; or

2. A change to the SAR or Bases that involves an unreviewed safety question, a significant increase in occupational exposure, or a significant unreviewed environmental impact as defined in 10 CFR 72.48.

c. The Bases Control Program shall contain provisions to ensure that the Bases are maintained consistent with the SAR.

d. Proposed changes that meet the criteria of 5.5.1.b above shall be reviewed and approved by the NRC prior to implementation. Changes to the Bases implemented without prior NRC approval shall be provided to the NRC on a frequency consistent with 10 CFR 72.48(b)(2).

North Anna-ISFSI 5.5-1 E

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___---___=_____-__-_______ - _-__ -_-__ _-_-_ - -_ - ___ - - _ - -

Programs 5.5 l

(-

.5.5-Programs i

L 5.5.21 Radioactive Effluent Control Program lThis program implements the requirements of 10 CFR 72.44(d).

.a. The North' Anna ISFSI does'not create any radioactive materials or have. any radioactive waste: treatment systems. Therefore, specific

~

operating procedures for the-control of radioactive effluents are l.

.not required. Specifications 3.1.3, SSSC Helium Leak Rate, and l-3.1.4, SSSC Seal Integrity, provide assurance that there are essentially no radioactive effluents from the ISFSI.

b. This program includes an environmental monitoring program. The North

~

Anna ISFSI may be included in the environmental monitoring program

for North Anna Power Station.

c. An annual-re) ort shall be submitted pursuant to 10 CFR'72.44(d)(3) specifying tle quantity of each of the principal radionuclides l

released to the environment in liquid and in gaseous effluents during l

the previous calendar year of operation. A schedule exemption.for submitting this report by May 1 of each year was granted in the license.

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' North Anna'ISFSI 5.5-2 L_L_-._:-._____._-

l TECHNICAL SPECIFICATIONS BASES FOR NORTH ANNA INDEPENDENT SPENT FUEL STORAGE INSTALLATION (ISFSI)

TABLE OF CONTENTS 2.0 FUNCTIONAL AND OPERATING LIMITS.............

B 2.0-1 3.0 LIMITING CONDITION FOR OPERATION (LCO) APPLICABILITY B 3.0-1 3.0 SURVEILLANCE REQUIREMENT (SR) APPLICABILITY.......

B 3.0-4 3.1 SSSC INTEGRITY B 3.1.1-1 3.1.1 SSSC Cavity Vacuum Drying Pressure B 3.1.1-1 3.1.2 SSSC Helium Backfill Pressure..........

B 3.1.2-1 3.1.3 SSSC Helium Leak Rate..............

B 3.1.3-1 3.1.4 SSSC Seal Integri ty...............

B 3.1.4-1 3.1.5 SSSC Maximum Lifting Height...........

B 3.1.5-1 3.2 SSSC CRITICALITY CONTROL B 3.2.1-1 3.2.1 Dissolved Boron Concentration..........

B 3.2.1-1 3.3 SSSC RADIATION PROTECTION..............

B 3.3.1-1 3.3.1 SSSC Average Surface Dose Rates.........

B 3.3.1-1 3.3.2 SSSC Surface Contamination B 3.3.2-1 3.3.3 ISFSI Perimeter Radiation............

B 3.3.3-1 i

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North Anna ISFSI i

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Functional and Operating Limits B 2.0 B 2.0 FUNCTIONAL AND OPERATING LIMITS B 2.1.1 Fuel'to be Stored at the ISFSI BASES BACKGROUND The SSSC design requires specifications for the spent fuel to be stored in each type of SSSC such as type of spent fuel, maximum allowable enrichment prior to irradiation, maximum L

burnup, minimum acceptable cooling time prior to storage in the'SSSC, maximum decay heat, and conditions of the spent fuel (i.e., intact assembly or consolidated fuel rods).

l_

Other important limitations are the radiological source terms for the fuel assemblies.

l These limitations are included in the thermal, structural, radiological, and criticality evaluations performed for each SSSC design and are specified in Table 2.1-1 for each SSSC design approved for use at the ISFSI.

I APPLICABLE An analysis of the storage of an unauthorized fuel assembly SAFETY ANALYSIS is presented in SAR Section 8.2.6 (Ref. 1). The analysis demonstrates that placement of an unauthorized fuel assembly in an SSSC has no adverse effects while the SSSC is located in the spent fuel pool. To ensure that the lid is not placed on an SSSC containing an unauthorized fuel assembly, facility procedures require verification of the loaded fuel assemblies to ensure that the correct fuel assemblies have been loaded in the SSSC.

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North Anna ISFSI B 2.0-1 L-._------__-----__

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Functional and Operating Limits B 2.0 BASES l

FUNCTIONAL AND The following Functional and Operating Limits violation OPERATING-responses are applicable, i

LIMITS.

VIOLATIONS 2.2.1 If Functional and Operating Limit 2.1.1 is violated, the limitations on the fuel assemblies in the SSSC have not been met. Actions must be taken to place the affected fuel assemblies in a safe condition. This safe condition may be established by returning the affected fuel assemblies to the spent fuel pool. However, it is acceptable for the af fected fuel assemblies to remain in the SSSC if that is determined to be a safe condition.

2.2.2 & 2.2.3 Notification of the violation of a Functional and Operating Limit to the NRC is required within 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months . Written reporting of the violation must be accomplished within 30 days. This notification and written report are independent of any reports and notification that may be required by 10 CFR 72.75.

REFERENCES

1. SAR, Section 8.2.6.

North Anna ISFSI B 2.0-2 i

_ _ _ _ _ = _ _ _ _ _ _ _ _ _ - - _ _ _ _

LC0 Applicability B 3.0 l

B 3.0 LIMITING CONDITION FOR OPERATION (LCO) APPLICABILITY BASES LCOs LC0 3.0.1, 3.0.2, 3.0.4 and 3.0.5 establish the general requirements applicable to all Specifications and apply at all times, unless otherwise stated.

LC0 3.0.1 LC0 3.0.1 establishes the Applicability statement within each individual Specification as the requirement for when the LC0 is required to be met (i.e., when the unit is in the specified conditions of the Applicability statement of each Speci fication).

LC0 3.0.2 LC0 3.0.2 establishes that upon discovery of a failure to meet an LCO, the associated ACTIONS shall be met. The Completion Time of each Required Action for an ACTIONS Condition is applicable from the point in time that an ACTIONS Condition is entered. The Required Actions establish those remedial measures that must be taken within specified Completion Times when the requirements of an LC0 are not met.

This Specification establishes that:

a. Completion of the Required Actions within the specified Completion Times constitutes compliance with a Specification; and

b. Completion of the Required Actions is not required when an LC0 is met within the specified Completion Time, unless otherwise specified.

There are two basic types of Required Actions. The first type of Required Action specifies a time limit in which the LC0 must be met. This time limit is the Completion Time to restore a syst.M or component or to restore variables to within specifid !imits. Whether stated as a Required Action or not, correctis 1 of the entered Condition is an action that may always be considered upon entering ACTIONS. The second type of Required Action specifies the remedial measures that permit continued operation that is not further restricted by the Completion Time. In this case, compliance with the Required Actions provides an. acceptable level of safety for continued operation.

(continued)

North Anna ISFSI B 3.0-1

LC0 Applicability B 3.0 BASES LC0 '3.0.2 Completing the Required Actions is not required when an LC0 (continued) is met or is no longer applicable, unless otherwise stated in i

the individual Specifications.

1 The Completion Times.of the Requi_ red Actions.are also applicable when'a system or component is' removed from service intentionally. The reasons for intentionally relying on the ACTIONS include, but are not limited to, performance of Surveillance, preventive maintenance, corrective maintenance, or investigation of operational-problems.

Entering ACTIONS for these reasons must be done in a manner that does not compromise safety. Intentional entry into ACTIONS should not be made for operational convenience.

LCO 3.0.3' This specification is not applicable to an ISFSI. The placeholder is retained for consistency with.the power

< reactor technical specifications.

LCO 3.0.4 LC0 3.0.4 establishes limitations on changes in specified conditions in the Applicability when an LC0 is not met. It precludes placing the unit in a specified. condition stated in that Applicability (e.g., Applicability desired to be -

entered) when the following exist:

a.' Facility conditions are such that the requirements of the LC0 would not be met in the Applicability desired to be entered; and

b. Continued noncompliance with the LC0 requirements, if the Applicability were entered, would result in the facility

.being required to exit the Applicability desired to be entered to comply with the Required Actions.

Compliance with Required Actions that permit continued operation of the facility for an unlimited period of time in a.specified condition provides an acceptable level of safety i

for continued operation. This is without regard to the status of the facility. Therefore, in such cases,- entry into Da~ specified condition in the Applicability may be made in accordance with the provisions of the Required Actions. The provisions of this: Specification'should not be interpreted

>as endorsing the failure to exercise the good practice of i

restoring systems or components before entering an associated specified condition in the Applicability.

(co.ntinued) q

-: North AnnaLISFSI

.B 3.0 J l

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I LC0 Applicability I

B 3.0

]

BASES i

LC0 3.0.4 The provisions of LC0 3.0.4 shall not prevent changes in (continued) specified conditions in the Applicability that are required to comply with ACTIONS. In addition, the provisions of LC0 3.0.4 shall not prevent changes in specified conditions in the Applicability that are related to the unloading of an SSSC.

Exceptions to tr0 3.0.4 are stated in the individual Specifications. Exceptions may apply to all the ACTIONS or

' to a specific Required Action of a Specification.

LC0 3.0.5 LC0 3.0.5 establishes the allowance for restoring equipment to service under administrative controls when it has been removed from service or determined to not meet the LC0 to comply with ACTIONS. The sole purpose of.this Specification is to provide an exception to LC0 3.0.2 (e.g., to not comply with the applicable Required Action (s)) to allow the performance of SRs to demonstrate:

a. The equipment being returned to service meets the LC0; or

b. Other equipment meets the applicable LCOs.

j The administrative controls ensure the time the equipment is returned to service in conflict with the requirements of the ACTIONS is limited to the time absolutely necessary to perform the allowed testing. This Specification does not provide time to perform any other preventive or corrective maintenance.

LC0 3.0.6 This specification is not applicable to an ISFSI. The placeholder is retained for consistency with the power reactor technical specifications.

LC0 3.0.7 This specification is not applicable to an ISFSI. The placeholder is retained for consistency with the power

- reactor technical specifications.

North Anna ISFSI B 3.0-3 Y_-________---

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l SR Applicability l

B 3.0 i

I B 3.0 SURVEILLANCE REQUIREMENT (SR) APPLICABILITY BASES SRs SR 3.0.1 through SR 3.0.4 establish the general requirements applicable to all Specifications and apply at all times, unless otherwise stated.

SR 3.0.1 SR 3.0.1 establishes the requirement that SRs must be met during the specified conditions in the Applicability for i

which the requirements of the LC0 apply, unless otherwise specified in the individual SRs. This Specification is to ensure that Surveillance are performed to verify the systems, components, and that variables are within specified limits. Failure to meet a Surveillance within the specified Frequency, in accordance with SR 3.0.2, constitutes a failure to meet an LCO.

Systems and components are assumed to meet the LC0 when.the associated SRs have been met. Nothing in this Specification, however, is to be construed as implying that systems or l

components meet the associated LCO when:

a. The systems or compenents are known to not meet the LCO, although still meetir:9 the SRs; or

b. The requirements of the Surveillance (s) are known not to be met between required Surveillance performances.

Surveillance do not have to be performed.when the facility is in a specified condition for which the requirements of the associated LC0 are not applicable, unless otherwise specified.

Surveillance, including Surveillance invoked by Required Actions, do not have to be performed on equipment that has been determined to not meet the LC0 because the ACTIONS define the remedial measures that apply. Surveillance have to be met and performed in accordance with SR 3.0.2, prior to returning equipment to service. Upon completion of maintenance, appropriate post maintenance testing is required. This includes ensuring applicable Surveillance are not failed and their most recent performance is in accordance with SR 3.0.2. Post maintenance testing may not be possible in the current specified conditions in the l

(continued)

North Anna ISFSI B 3.0-4

SR Applicability B 3.0 l

BASES SR 3.0.1 Applicability due to the necessary facility parameters not

-(continued) having been established. In these situations, the equipment may be considered to meet the LC0 provided testing has been satisfactorily completed to the extent aossible and the equipment is not otherwise believed to )e incapable of performing its function. This will allow operation to proceed to a~ specified condition where other necessary post maintenance tests can be completed.

SR 3.0.2 SR 3.0.2 establishes the requirements for meeting the specified Frequency for Surveillance and any Required Action with a Completion Time that requires the periodic performance of the Required Action on a "once per..."

interval.

SR 3.0.2 permits a 25% extension of the interval specified i.

L in the Frequency. This extension facilitates Surveillance l ~

scheduling and considers plant operating conditions that may i

not be suitable for conducting the Surveillance (e.g.,

L transient conditions or other ongoing Surveillance or L

maintenanceactivities).

'The 25% extension does not significantly degrade the reliability that results from performing the Surveillance at u

its specified Frequency. This is based on the recognition that the most probable result of any particular Surveillance -

being performed is the " verification of conformance with the l

SRs. The exceptions to M 3.0.2 are those Surveillance for which the 25% extension of the interval specified in the j

Frequency does not. apply. These exceptions are stated in the L

individual Specifications as a Note in the Frequency stating, "SR 3.0.2 is not applicable."

As stated in SR 3.0.2, the 25% extension also does not apply to the initial portion of a periodic Completion Time that requires performance on a "once per..." basis. The 25%

l extension applies to each performance.after the initial performance. The initial performance of the Required Action, l

whether it is a particular Surveillance or some other remedial action,' is considered a single action with a single L

Completion Time. One reason for not allowing the 25%

. extension to this Completion-Time.1s that such an action usually verifies that no loss of function has occurred by checking the status of redundant or diverse components or (continued)

North Anna ISFSI B 3.0-5 L

SR Applicability B 3.0 BASES SR 3.0.2-accomplishes the function of the affected equipment in an

-(continued) alternative manner.

The provisions of SR 3.0.2 are not intended to be used repeatedly merely as an operational convenience:to extend Surveillance intervals or periodic Completion Time intervals beyond those specified.

- SR. 3.0.3 SR 3.0.3 establishes the flexibility to defer declaring affected ' equipment as not meeting the LC0 or an affected variable outside' the specified limits when a Surveillance has not been completed within the specified Frequency. A delay period of up to 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months ar up to the limit of the specified Frequency, whichever is less, applies from the point in time that it is discovered that the Surveillance.has not been performed in'accordance with SR 3.0.2.and not at the time.that the specified Frequency was not met.

1 This delay period provides adequate time to complete.

Surveillance that have been missed. This-delay period permits the completion of=a Surveillance before complying with Required ~ Actions or other remedial measures that might l

preclude completion of the Surveillance.

The basis for this delay period includes consideration of-facility conditions, adequate planning, availability of personnel, the time required to perform ~the Surveillance,.

the safety significance of the delay in completing the required Surveillance, and the recognition that the most probable result of any particular Surveillance being_

performed is=the verification of conformance with the-requirements. When a Surveillance with a Frequency based.not on time intervals, but upon specified facility conditions or t,perational situations, is discovered not to have been

' performed when specified, SR 3.0.3 allows the full delay period of 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months to perform the Surveillance.

SR 3.0.3 also provides a time. limit for completion of Surveillance that become' applicable as a consequence of changes in the specified conditions in the Applicability imposed by Required Actions.

Failure to comply with specified Frequencies for SRs is expected-to be an infrequent occurrence. Use of the delay (continued)

- North Anna ISFSI!

B 3.0-6 l

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SR Applicability l

B 3.0 i

BASES SR 3.0.3 period established by SR 3.0.3 is a flexibility which is not

-(continued) intended to be used as an operational convenience to extend Surveillance intervals.

If a Surveillance is not completed within the allowed delay period, then the equipment is considered to not meet the LC0 or the variable is considered outside the specified limits i

and the Completion Times of the Required Actions for the applicable LC0 Conditions begin immediately upon expiration of the delay period. If a Surveillance is failed within the delay period, then the equipment does not meet the LCO, or the variable is outside the specified limits and the Completion Times of the Required Actions for the applicable LC0 Conditions begin immediately upon the failure of the Surveillance.

Completion of the Surveillance within the delay period allowed by this Specification, or within the Completion Time of the' ACTIONS, restores compliance with SR 3.0.1.

SR 3.0.4 SR 3.0.4 establishes the requirement that all applicable SRs must be met.before entry into a specified condition in the Applicability.

This Specification ensures that system and component requirements and variable limits are met before entry into specified conditions in the Applicability for which these systems and components ensure safe operation of the facility.

The provisions of this Specification should not be interpreted as endorsing the failure to exercise the good practice of restoring systems or components before entering an associated specified condition in the Applicability.

However, in certain circumstances, failing to meet an SR will not result in SR 3.0.4 restricting a change in specified condition. When a system, subsystem, component, device, or variable is outside its specified limits, the associated SR(s) are not required to be performed, per SR 3.0.1, which states that surveillance do not have to be performed on such equipment. When-equipment does not meet the LC0, SR 3.0.4 does not app)ly.to the associated SR(s)since the requirement for the SR(s to be performed is removed. Therefore, failing

-to perform the Surveillece(s) within the specified (continued) i North Anna ISFSI B 3.0-7

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SR Applicability I

B 3.0 l

BASES l

SR'3.0.4 Frequency does not result in an SR 3.0.4 restriction to (continued) changing specified conditions of the Applicability. However, since the LC0 is not met in this instance, LC0 3.0.4 will govern any restrictions that may (or may not) apply to specified condition changes.

The provisions of SR 3.0.4 shall not prevent-changes in specified conditions in the Applicability that are required to comply with ACTIONS. In addition, the provisions of LCO 1

3.0.4 shall not prevent changes.in specified conditions in

.I the Applicability that are related to the unloading of an SSSC.

l The precise requirements for performance of SRs are specified such that exceptions to SR 3.0.4 are not necessary. The specific time frames and conditions necessary for meeting the SRs are specified-in the Frequency, in the Surveillance, or both. This allows performance of l-Surveillance when the prerequisite condition (s) specified in a Surveillance procedure require entry into the specified condition in the Appl.icability of the associated LCO prior to the performance or completion of a Surveillance. A Surveillance that could not be performed until after entering the LCO Applicability, would have its Frequency i

specified such that it is not "due" until-the specific-conditions needed are met.

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. North. Anna.ISFSI B 3.0-8

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SSSC Cavity Vacuum Drying Pressure B 3.1.1

'B 3.1 SSSC INTEGRITY B 3.1.1 SSSC Cavity Vacuum Drying Pressure BASES BACKGROUND An SSSC is placed in the spent fuel pool and loaded with fuel assemblies meeting the requirements of the Functional and Operating Limits. A lid is then placed on the SSSC. The SSSC is raised to the spent fuel pool surface and water-is pumped i

from the SSSC fuel cavity. The SSSC is then moved into a cask bay and the lid is secured. Vacuum drying of the SSSC cavity is performed. The cavity is backfilled with helium and the SSSC seals are tested. The SSSC surfaces are decontaminated.

Any additional. lids are attached and any instrumentation used to monitor the SSSC for seal leakage is installed.

Surface radiation dose measurements are completed prior to moving the SSSC to the ISFSI storage pad.

1 Cavii,y vacuum drying is utilized to remove residual moisture from the SSSC fuel cavity after the SSSC has been drained of water. Any water which was not drained from the fuel cavity evaporates from fuel or basket surfaces due to the vacuum.

This is aided by the temperature increase due to the heat generation of the fuel.

l APPLICABLE The confinement of radioactivity during the storage of spent SAFETY ANALYSIS fuel in a SSSC is ensured by the use of multiple confinement barriers and systems. The barriers relied upon are the uranium dioxide fuel pellet matrix, the metallic fuel L

cladding tubes in which the fuel pellets are contained, and the SSSC in which the fuel assemblies are stored. Long-term l

integrity of the fuel cladding depends on storage in an inert L

atmosphere. This is accomplished by removing water from the SSSC fuel cavity and backfilling the cavity with an inert gas. The failure of all confinement barriers is considered in the accident analysis (Ref. 1). In addition, the thermal analyses of the SSSC assume that the SSSC cavity is filled with dry helium.

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. North Anna ISFSI B 3.1.1-1 I

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SSSC Cavity Vacuum Drying Pressure B 3.1.1 BASES.

LC0 A vacuum pressure of less than that specified in Table 3-1 indicates _that all liquid water has evaporated and been removed from the SSSC cavity. Removing water from the SSSC fuel cavity helps to ensure the long-term maintenance of fuel clad integrity.

APPLICABILITY Cavity vacuum drying is performed during LOADING OPERATIONS before the SSSC is transported to the ISFSI storage pad.

Therefore, the vacuum requirements do not apply after the I

SSSC is backfilled with helium prior to TRANSPORT OPERATIONS and STORAGE OPERATIONS.

L'

-ACTIONS A Note has been added to the ACTIONS which states that, for this LCO, separate Condition entry is allowed for each SSSC.

This is acceptable since the Required Actions for each Condition provide appropriate compensatory measures for each SSSC not meeting the LCO. Subsequent SSSCs that don't meet the LC0 are governed by subsequent Condition entry and I

l application of associated Required ' Actions.

A.1 j

1 If the cavity vacuum drying pressure limit cannot be met, actions must be taken to meet the LCO. Failure to successfully complete cavity vacuum drying could have many causes, such as failure of the vacuum drying system, inadequate draining, ice clogging of the drain lines, or

leaking SSSC cavity seals. The provided Completion Time is a

sufficient to determine and correct most failure mechanisms.

L B_d

-If the SSSC fuel cavity cannot be successfully vacuum dried, the fuel must be removed and placed in a safe and analyzed L

condition in the spent fuel pool. The Completion Time is

. reasonable based on the time required to move and unload an SSSC in an orderly manner and without challenging the

-operating personnel.

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l-B 3.1.1-2 North Anna ISFSI' l

1

SSSC Cavity Vacuum Drying Pressure B 3.1.1 BASES SURVEILLANCE SR 3.1.1.1

' REQUIREMENTS The long-term integrity of the stored fuel.is dependent on storage in a dry, inert environment. Cavity dryness is demonstrated by evacuating the cavity to a very low pressure and verifying that the pressure is held over a specified period of time. A. low vacuum pressure is an indication that the cavity is dry.

This dryness test must be performed successfully on each SSSC before placing in storage. The test must be performed Lwithin'48 hours5.555556e-4 days 0.0133 hours 7.936508e-5 weeks 1.8264e-5 months of removing the SSSC from.the spent fuel pool. This allows sufficient time to prepare the SSSC'and perform the test while minimizing the time the fuel is in the SSSC without an inert atmosphere.

REFERENCES:

'1. SAR, Section 8.2.10.

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North Anna-ISFSI B 3.1.1-3 p

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Intentionally Blank

SSSC Helium Backfill Pressure B 3.1.2 B 3.1 SSSC INTEGRITY B 3.1.2 SSSC Helium Backfill Pressure l

BASES BACKGROUND An SSSC is placed in the spent fuel pool and loaded with fuel assemblies meeting the requirements of the Functional and Operating Limits. A lid is then placed on the SSSC. The SSSC is raised to the spent fuel pool surface and water is pumped from the SSSC fuel cavity. The SSSC is then moved into a cask bay and the lid is secured. Vacuum d. jing of the SSSC cavity is performed. The cavity is backfilled with helium and the SSSC seals are tested. The SSSC surfaces are decontaminated.

Any additional lids are attached and any instrumentation used to monitor the SSSC cavity pressure is installed.

Surface radiation dose measurements are completed prior to moving the SSSC to the ISFSI storage pad.

Backfilling the SSSC fuel cavity with helium promotes heat transfer from the fuel and the inert atmosphere protects the fuel cladding. Providing a helium pressure greater than atmospheric pressure ensures that there will be no in-leakage of air over the life of the SSSC, which might be harmful to the fuel.

APPLICABLE The confinement of radioactivity during the storage of spent SAFETY ANALYSIS fuel in a SSSC is ensured by the use of multiple confinement barriers and systems. The barriers relied upon are the uranium dioxide fuel pellet matrix, the metallic fuel cladding tubes in which the fuel pellets are contained, and the SSSC in which the fuel assemblies are stored. Long-term integrity of the fuel cladding depends on storage in an inert atmosphere. This is accomplished by removing water from the SSSC fuel cavity and backfilling the cavity with helium, an inert gas. This confinement of radioactive material is assumed in the loss of confinement barrier accident analysis (Ref. 1). In addition, the thermal analysis performed for the SSSCs in the Topical Safety Analysis Report assumes the use of helium as a cover gas.

North Anna ISFSI B 3.1.2-1

SSSC Helium Backfill Pressure B 3.1.2 BASES f

LC0 Backfilling the SSSC fuel cavity with helium at a pressure

!~

exceeding atmospheric pressure will ensure that there will be no air in-leakage into the cavity which could damage the fuel cladding over the licensed storage period. The helium pressure value specified in Table 3-1 was taken from the SSSC Topical Safety Analysis Report and was selected to ensure

.that the pressure within the SSSC remains within the design pressure limits over the life of the SSSC.

APPLICABILITY Helium backfill is performed during LOADING OPERATIONS prior to transporting the SSSC to the ISFSI storage pad. The helium leak rate is then measured prior to TRANSPORT OPERATIONS and STORAGE OPERATIONS.

ACTIONS A Note has been added to the ACTIONS which states that, for this LC0, separate Condition entry is allowed for each SSSC.

This is acceptable since the Required-Actions for each Condition provide appropriate compensatory measures for each SSSC not meeting the LC0. Subsequent SSSCs that don't meet the LC0 are governed by subsequent Condition entry and application of associated Required Actions.

l A.1 If the helium backfill pressure cannot be obtained, actions must be taken to meet the LCO. The provided Completion Time is sufficient to determine and correct most failures which would prevent backfilling of the SSSC fuel cavity with helium.

-B.1 If the SSSC fuel cavity cannot be backfilled with helium to the specified pressure. the fuel must be removed and placed in a safe and analyzed. condition in the spent fuel pool. The Completion Time is reasonable based on the time required to move and unload an SSSC in:an orderly manner and without challenging the operating personnel.

North Anna ISFSI B 3.1.2-2

SSSC Helium Backfill Pressure B 3.1.2 BASES l

SURVEILLANCE SR 3.1.2.1 i

REQUIREMENTS l

The long-term integrity of the stored fuel is dependent on j

l storage in an inert environment. Filling the SSSC fuel

~

cavity with helium at the pressure specified in Table 3-1 I

i will ensure that there will be no air in-leakage, which could i

potentially damage the fuel, and that the SSSC fuel cavity

' internal pressure will remain within limits for the life of the.SSSC.

Backfilling with helium must be performed successfully on each SSSC before placing it in storage. The Surveillance must be performed within 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months after verifying SSSC i

cavity vacuum drying pressure is within limit. This allows sufficient time to backfill the SSSC fuel cavity with helium while minimizing the time the fuel is in the SSSC without the assumed inert atmosphere.

REFERENCES

1. SAR, Section 8.2.10.

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l North Anna ISFSI B 3.1.2-3 E_____:--_._--___________---___---_-

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Intentionally Blank i

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SSSC Helium Leak Rate B 3.1.3 B 3.1 SSSC INTEGRITY B 3.1.3 SSSC Helium Leak Rate L

~ BASE'S

. BACKGROUND.

An SSSC is placed in' the spent fuel pool and loaded with fuel assemblies meeting the requirements of 'the Functional and Operating Limits. A lid is then placed on the SSSC.-The SSSC is raised to the spent fuel pool surface and water is pumped -

l-from the SSSC. fuel cavity. The SSSC is then moved into a cask t

bay and the lid is secured. Vacuum drying of the SSSC cavity l.

is performed. The cavity is backfilled with helium and the.

L

SSSC seals are tested.' The SSSC surfaces are decontaminated.

L

- Any additional lids are attached and any instrumentation j.

used to monitor the SSSC cavity pressure is installed.-

l Surface radiation dose measurements are completed prior to moving the_.SSSC to the ISFSI storage-pad.

L L

Backfilling the SSSC fuel cavity with. helium promotes heat fuel cladding.. Prior-to moving the SSSC to the storage pad, transfer from the fuel and the. inert atmosphere protects the l

.the helium leak rate is determined to ensure that the fuel is confined..

APPLICABLE The ' confinement of radioactivity during the storage of spent

-SAFETY ANALYSIS

' feel in a SSSC is ensured.by the use of multiple confinement

'barrie'rs and systems. The barriers ' relied upon are the uranium dioxide fuel pellet l matrix, the n,etallic fuel-cladding tuber in'which the fuel pellets.are contained, and the SSSC in which the fuel assemblies are stored. This confinement of~ radioactive material is assumed in the L

analysis of accidents except for-the' loss of confinement barrier accident analysis (Ref. 1)..

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North Anna ISFSI-

,B 3.1.3-1 L

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_=_

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SSSC Helium Leak Rate B 3.1.3 BASES LC0 Verifying that the SSSC fuel cavity is sealed by measuring the helium leak rate will ensure that the assumptions in the accident analyses and radiological evaluations are a

maintained. The helium leak rate value specified in Table 3-J 1 was taken from the SSSC Topical Safety Analysis Report.

=

APPLICABILITY The helium leak rate measurement is performed during LOADING OPERATIONS before the SSSC is transported to the ISFSI storage pad. Seal integrity is monitored during STORAGE OPERATIONS by LC0 3.1.4, Seal Integrity.

l ACTIONS A Note has been added to the ACTIONS which states that, for this LCO, separate Condition entry is allowed for each SSSC.

This is acceptable since the Required Actions for each Condition provide appropriate compensatory measures for each SSSC not meeting the LC0. Subsequent SSSCs that don't meet

[

the LC0 are governed by subsequent Condition entry and application of associated Required Actions.

A.1 If the helium leak rate limit is not met, actions must be taken to meet the LCO. The provided Completion Time is sufficient to determine and correct most failures which would cause a helium leak rate in excess of the limit.

B.1 If the SSSC helium leak rate cannot be brought within the limit, the fuel must be removed and placed in a safe and analyzed condition in the spent fuel pool. The Completion Time is reasonable based on the time required to move and unload an SSSC in an orderly manner and without challenging the operating personnel.

North Anna ISFSI B 3.1.3-2

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SSSC Helium Leak Rate B 3.1.3 BASES-

-SURVEILLANCE SR' 3.1.3.1' REQUIREMEflTS-A primary design consideration'of the SSSC is that it is essentially leak tight. Measuring the helium leak rate with a helium leak detector demonstrates that the SSSC

' confinement' barrier. is sealed.

Measuring the helium leak rate must be performed successfully on each SSSC prior to placing it in storage. The Surveillance must be performed within~48 hours after j

- verifying. SSSC helium backfill prassure is within limit.

This allows sufficient time to perform the' Surveillance

,i while minimizing the time the fuel is in the.SSSC without 1

verifying that the SSSC is sealed.

REFERENCES

1. SAR, Section 8.2.10.

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1-North Anna ISFSI.

B 3.1.3-3

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i Intentionally Blank i

L SSSC Seal Integrity B 3.1.4 L

L B 3.1 SSSC INTEGRITY l

B 3.1.42 SSSC Seal Integrity L

BASES l

l-BACKGROUND An SSSC is loaded, dried, and sealed prior to being l

transported to the ISFSI and placed on a storage pad. The SSSC is designed with redundant seals to contain the radioactive material. In addition,10 CFR 72.122(h)(4) and

-10 CFR 72.128(a)(1) state that the SSSCs must have the capability to be continuously monitored such that the L

licensee will be able to determine'when corrective action needs to be taken to maintain-safe storage conditions. The monitoring systems vary with SSSC design, but have several-factors in common:

l

a. The ability to monitor a pressure that will indicate if SSSC seal. integrity is compromised, such as inter-seal

!^

pressure or_ fuel cavity pressure; and i

g

b. Local and remote alarms to notify the licensee that-

. potential seal degradation has occurred.

1 Regardless of the method of monitoring used,-it is necessary l

to verify-~SSSC seal integrity at a regular interval.

j APPLICABLE The confinement of radioactivity during the storage of spent SAFETYLANALYSIS

'uel'in a SSSC is ensured by the use of multiple confinement 4

barriers and systems. The barriers relied upon are the uranium dioxide fuel pellet matrix, the metallic fuel cladding tubes in which the fuel pellets are contained, and

- the SSSC in which the fuel assemblies 'are. stored. The failure of all confinement barriers is considered in the accident analysis (Ref. 1). In addition, the thermal analyses of the SSSC assume that the SSSC cavity is filled with dry helium.

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1 North Anna ISFSI-B 3.1.4-1

_ _ _..- - __ _ _=______ _ _ _ _-____ - __ _

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SSSC Seal Integrity l

B 3.1.4

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BASES l

LCO.

Verifying SSSC seal integrity ensures that the assumptions l

in the accident analyses and radiological evaluations are maintained. The method of verifying seal integrity varies with SSSC design and is specified in Table 3-1 for each design.

APPLICABILITY

.SSSC seal integrity verification is performed regularly during STORAGE OPERATIONS to confirm that the SSSC confinement barriers have not been compromised. During LOADING OPERATIONS, the seal integrity is verified prior to moving the SSSC to the ISFSI storage pads. Verification during TRANSPORT OPERATIONS is not possible as the SSSC is being moved. However, TRANSPORT OPERATIONS are brief and follow the verification performed during LOADING OPERATIONS and, therefore, does not represent a significant lapse in seal integrity monitoring.

ACTIONS A Note has been added to the ACTIONS which states that, for this LCO, separate Condition entry is allowed for each SSSC.

This is acceptable since the' Required Actions for each Condition provide appropriate compensatory measures for each

-SSSC not meeting the LCO. Subsequent SSSCs that don't meet the LC0 are governed by subsequent Condition entry and application of associated Required Actions.

A.1 If the SSSC seal. integrity is not maintained, actions must be taken to meet the LCO. The provided Completion Time considers the time required to diagnose and repair seal integrity problems,' including the potential action of moving the SSSC into the power station protected area for repairs.

B.1 If SSSC seal integrity cannot be established within the Completion Time provided in Action A.1, the fuel must be removed and placed in a safe and analyzed condition in the spent fuel pool. The Completion Time is reasonable based on the time required to move and unload an SSSC in an orderly

. manner and without challenging the operating personnel.

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l North Anna ISFSI B 3.1.4-2 L_____________-________

SSSC Seal Integrity L

B 3.1.4 BASES l

SURVEILLANCE:

SR 3.1.4.1 REQUIREMENTS.

SSSC seal integrity must be verified in accordance with 10 CFR 72.122(h)(4) and 10 CFR 72.128(a)(1). The method for l

verifying seal integrity varies with SSSC cask design and is specified in Table 3-1 for each design. 'Normally, SSSC seal integrity is' verified using installed instrumentation that.

alarms at a' central panel. If this system is not operating on one or more SSSCs, monitoring of seal integrity at each l

affected SSSC may be performed.

Monitoring of the.SSSC seal integrity is performed once per l-24 hours. The Frequency is based on maintaining cognizance lof facility. conditions.

REFERENCES None.

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' North Anna ISFSI B 3.1.4-3 I

h__.n_m.-.____m.__

Intentionally Blank I

l SSSC Maximum Lifting Height l'

B 3.1.5 L

B 3.1 =SSSC'INTEGRI'TY-l L

B 3.1.5 SSSC Maximum Lifting Height L

. BASES l

BACKGROUND' iA loaded SSSC is transported between the power station protected area and.the SSSC storage pad using a transporter.

The' height to which the SSSC is lifted by the transporter isL limited to-ensure that the structural integrity of the SSSC is not compromised should the SSSC be accidently dropped.

APPLICABLE

-The structural analyses of'the SSSCs demonstrate that a l

SAFETY ANALYSIS bottom-end drop of an SSSC frcm the Technical Specifications limit to an SSSC storage-pad will not result in compromise of the SSSC integrity or physical damage to the' contained fuel assemblies. The drop of an SSSC from a transporter at:a greater height is not considered credible'(Ref.1).

i lLC0 Limiting the SSSC lifting height during TRANSPORT OPERATIONS maintains _ the operating conditions of the SSSC within the design basis..The maximum lifting height is a function of the

SSSC design and is specified in Table 3-1 for each design.

APPLICABILITY

'SSSC maximum lifting height applies during movement of the -

SSSC while suspended from the transporter. SSSC handling and drop events postulated to occur.in the Fuel and Decontamination Buildings are addressed in the. North Anna Power Station Updated Final Safety Analysis. Report. SSSC-drop events cannot occur during STORAGE OPERATIONS as the SSSC is sitting on the ISFSI storage pad.

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. North AnnaLISFSI' B 3.1.5-1

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L SSSC Maximum Lifting Height i

B 3.1.5

, BASES

~ ACTIONS A Note has been added to.the ACTIONS which states that, for this LCO, separate Condition entry is allowed for each SSSC.

l.

.This is acceptable since the Required Actions for each Condition provide appropriate compensatory measures for each i

SSSC not meeting the LCO. Subsequent SSSCs that don't meet

.the LC0 are governed by subsequent Condition entry and application of associated Required Actions.

A.1 If the SSSC lifting height is higher than the limit,

-immediate action must be taken to lower the SSSC to within the limit.

SURVEILLANCE SR 3.1.5.1

' REQUIREMENTS SSSC lifting height must be measured prior to movement of the SSSC while it is' suspended by the transporter.

REFERENCES

1. SAR, Section 8.2.9.

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North Anna ISFSI B 3.1.5-2

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Dissolved Boron Concentration B 3.2.1 l

B 3.2 SSSC CRITICALITY CONTROL B 3.2.1 Dissolved Boron-Concentration i

BASES BACKGROUND The SSSCs are designed to maintain the fuel subcritical under all credible conditions with a K,ff $; 0.95. Criticality control of an SSSC drained of water is maintained by neutron absorbers contained in the fuel basket. While the SSSC is in the spent-fuel pool or filled with water, additional neutron absorber is necessary to counteract neutron moderation by l,

.the water. As a result, the water must be borated to provide i

additional criticality control.

l APPLICABLE The SSSCs are designed to maintain the stored fuel in a SAFETY ANALYSIS suberitical condition assuming a single active or passive failure and an infinite number SSSCs stored-together in l

close proximity (Ref.1). The methods for criticality control vary by-SSSC design, and some rely on borating the water used to fill the fuel cavity to counteract its neutron moderating effect. The effects on subcriticality from misloading a fuel assembly into an SSSC which is more reactive than the authorized assemblies has been analyzed (Ref. 2). Maintaining the boron concentration of the water in the SSSC cavity at or above the Technical Specification i

limit prevents violation of the criticality design criterion.

LCO The water in the SSSC cavity must have a boron concentration 2 the limit in Table 3-1. The limit is a function of the SSSC design, and Table 3-1 contains the appropriate limit for each SSSC design. Placing a lower limit on the boron concentration of the water in the spent fuel pool and of the SSSC fuel cavity ensures that the fuel 1

in the SSSC remains subcritical.

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l' North Anna ISFSI B 3.2.1-1 I

Dissolved Boron Concentration B 3.2.1 BASES APPLICABILITY

'The boron concentration of the water in the SSSC fuel cavity must be within its limit whenever there is water in the fuel cavity. This occurs during LOADING OPERATIONS and UNLOADING OPERATIONS. During TRANSPORT OPERATIONS and STORAGE OPERATIONS, the SSSC fuel cavity is dry and fuel criticality control is provided by fixed neutron absorbers in the fuel

cavity, i

ACTIONS A.1 If the dissolved boron concentration of the SSSC fuel cavity is not within limit, loading of any additional fuel assemblies into the SSSC fuel cavity must be stopped.

Without the required concentration of dissolved boron in the water, maintaining the subcriticality limit in all conditions cannot be guaranteed. The immediate Completion Time reflects the importance of prohibiting the introduction of any potential positive reactivity addition into the SSSC fuel cavity without the required boron concentration.

UNLOADING OPERATIONS can proceed, as the spent fuel pool criticality analysis does not assume the presence of dissolved boron to achieve the required suberiticality margin. In this case, moving fuel assemblies from the SSSC fuel cavity into the spent fuel pool racks is an acceptable compensatory measure.

A.2 If the dissolved boron concentration in the SSSC fuel cavity cannot be brought within the limit, all fuel assemblies must be removed from the SSSC. This restores the fuel assemblies to an analyzed condition in the spent fuel pool. The Completion. Time takes into consideration the time to change the boron concentration of a large spent fuel pool and the time to unload a loaded SSSC.

i North Anna ISFSI' B 3.2.1-2 l

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1 Dissolved Boron Concentration L

B 3.2.1 BASES SURVEILLANCE

-SR 3.2.1.1 REQUIREMENTS This SR ensures that the boron concentration in the SSSC fuel cavity is within limit by requiring that the boron concentration of the spent fuel pool and of any other source j

of water to be added to the SSSC fuel cavity is within the limits in Table 3-1 during LOADING OPERATIONS. The boron concentration is determined periodically using chemical analysis of two samples analyzed by different individuals to reduce the risk that a single error could lead to not meeting the LCO.

')

The requirement to verify the boron concentration with '4 hours4.62963e-5 days 0.00111 hours 6.613757e-6 weeks 1.522e-6 months prior to commencing LOADING OPERATIONS ensures that the water added to the SSSC fuel cavity is within the limit.

The Frequency of every 48 hours5.555556e-4 days 0.0133 hours 7.936508e-5 weeks 1.8264e-5 months thereafter while the SSSC is in the spent fuel pool is a reasonable amount of time to verify the boron concentration of representative samples.

.0nce the SSSC has been removed from the Spent Fuel Pool, the boron concentration of the water in the SSSC fuel cavity is not expected to significantly change. The Frequency is based on operating experience that the boron concentration changes very slowly.

SR 3.2.1.2 This SR ensures that the boron concentration in the SSSC fuel cavity is within limit by requiring that the boron concentration of the spent fuel pool and of any other source of water to be added to the SSSC fuel cavity is within the limits in Table 3-1 during UNLOADING OPERATIONS. The boron concentration is determined periodically using chemical analysis of two samples analyzed by different individuals to reduce the risk that a single error could lead to not meeting the LCO.

(continued) l l

North Anna ISFSI B 3.2.1-3

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Dissolved Boron Concentration B 3.2.1 BASES l

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SURVEILLANCE-SR 3.2.1.2 (continued)

L REQUIREMENTS l

'The requirement to verify the boron concentration with 4

' hours prior to commencing UNLOADING OPERATIONS ensures that

' the water added to the SSSC fuel cavity is within the limit.

The Frequency of every 48 hours5.555556e-4 days 0.0133 hours 7.936508e-5 weeks 1.8264e-5 months thereafter while the SSSC is

'in the S)ent Fuel Pool is a reasonable amount of time to -

verify tie boron concentration of representative samples.

l Once the SSSC has been removed from the Spent Fuel Pool, the boron concentration of the water in the SSSC fuel cavity is not expected to significantly change. The Frequency is based on. operating experience that the boron concentration in the spent fuel pool changes very slowly.

. REFERENCES

1. SAR, Section 3.3.4.

2. SAR, Section 8.2.6.

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JNorth'AnnaLISFSI.

B 3.2.1-4 i

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SSSC Average Surface Dose Rates

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-B 3.3~ SSSC RADIATION PROTECTION

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zB 3.3.1 SSSC Average Surface Dose Rates l'

i-b BASES-l BACKGROUND The regulations governing the operation of an ISFSI set limits on the control of occupational radiation exposure and -

= radiation doses to the general public (Ref.1). Occupational

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radiation exposure should be kept as low as reasonably.

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. achievable (ALARA)..and within the limits of 10 CFR Part 20.

l' Radiation doses to the public are limited for both normal and accident conditions. In addition, the sum of the SSSC..

average surface dose rates determines the ISFSI perimeter i

dose rates discussed in Specification 3.3.3, ISFSI Perimeter q

Radiation.

l-l APPLICABLE The SSSC average surface dose rates are not an assumption in,

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. SAFETY ANALYSIS any accident analysis, but are used to ensure compliance with regulatory limits on occupational dose and dose to the l

public.

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.:The' limits on SSSC average surface dose rates are based on LCO the shielding analysis in the SAR.(Ref.1).- The limits were selected to minimize radiation exposure to the general public and maintain occupational dose ALARA to personnel l

working in the vicinity of the SSSCs.. Compliance with the L

.SSSC surface dose rate limits also ensures compliance with l'

LCO 3.3.3,ISFSI Perimeter Radiation during STORAGE.

OPERATIONS.

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~ APPLICABILITY

' The SSSC average-surface dose. rates apply.during LOADING l'

OPERATIONS. These~1imits ensure that the SSSC average surface dose rates during TRANSPORT OPERATIONS, STORAGE.

-OPERATIONS, and UNLOADING OPERATIONS are within the estimates contained in the SAR. Radiation doses during.

STORAGE OPERATIONS are monitored by Specification 3.3.3, i

ISFSI Perimeter Radiation.

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SSSC Average Surface Dose Rates B 3.3.1 l-BASES-ACTIONS-A Note has been added to the ACTIONS which states that, for l

.this LCO, separate Condition entry is allowed for each SSSC.

L This is acceptable since the Required Actions for each l

l Condition provide appropriate compensatory measures for each j

l SSSC not meeting the LC0. Subsequent SSSCs that don't meet the LC0 are governed by subsequent Condition entry and i

application of associated Required Actions.

A.1 I

If the SSSC average surface dose rates are not within limits.

it could be an indication that a fuel assembly was inadvertently loaded into the SSSC that did not meet the Function and Operating Limits in Section 2.0. Administrative verification of the SSSC fuel loading, by means such as j

l review of video recordings and records of the loaded fuel assembly serial numbers, can establish whether a misloaded fuel assembly is the cause of the out of limit condition. The Completion Time is based on the time required to perform such a verification.

A.2 l-If the SSSC average surface dose rates are not within limits, and'it is' determined.that the SSSC was loaded with the correct fuel assemblies,^an analysis may be performed to determine if the SSSC, once located at the ISFSI, would result 'in the ISFSI offsite or occupational calculated doses exceeding the regulatory limits in 10 CFR Part 20 or 10 CFR 72. If it is determined that the out of limit average l

surface dose. rates do not result in the regulatory limits y

being exceeded, TRANSPORT OPERATIONS may proceed.

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.If it is verified that the correct fuel was not loaded or that the ISFSI offsite radiation protection requirements of 10 CFR Part 20 and 10 CFR Part 72 will not be met with the SSSC average surface dose rates above the LC0 limit, all fuel assemblies must be removed from the SSSC. The Completion Time is reasonable based on the time required to move and L

unload an SSSC 'in an orderly manner and without challenging L

. the. operating personnel.

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SSSC Average Surface Dose Rates B 3.3.1 l

BASES i

U SURVEILLANCE SR -3.3.1.1 REQUIREMENTS This SR ensures that.the SSSC average surface. dose rates are within the LC0 limits prior to transporting the SSSC to the ISFSI. The surface dose rates are measured following industry practices. for determining average surface dose rates for large containers.

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. REFERENCES 1.~ 10 CFR Part 72.

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~SSSC Surface Contamination B 3.3.2

.B 3'.3' SSSC' RADIATION PROTECTION-B 3.3.2:-SSSC Surface Contamination.

BASES BACKGROUND An SSSC.is immersed in the spent fuel pool in order to load

.the spent. fuel assemblies. As a result, the surface of the LSSSC may become contaminated with the radioactive material in the spent fuel pool' water. This contamination'is removed prior to moving the SSSC to the 'ISFSI in order to minimize radioactive. contamination to personnel or the environment.

This allows the ISFSI-to be entered without additional radiological controls to prevent the spread of contamination

- and reduces personnel dose due to the spread of loose contamination'or airborne contamination. This is-consistent with ALARA' practices.

APPLICABLE LThe radiation protecti'on measures implemented at the ISFSI

SAFETY ANALYSIS

'are based on.the assumption that the exterior surfaces of the SSSCs have been decontaminated (Ref. 1). Failure to decontaminate the surfaces of the SSSCs could lead to higher.

than projected occupational doses.

-LCO.

Removable surface' contamination on the-SSSC exterior.

2 surfaces -isilimited to'1000 dpm/100 cm from~ beta and gamma sourcesand20dpm/100cm'fromalphasources..Theselimits are taken from the guidance provided in IE Circular 81-07.

(Ref.'2) and are based on the minimum level: of activity that

.can be routinely detected under a surface contamination control' program using direct survey methods..Only loose -

contamination is controlled, as fixed. contamination will not

- result from the SSSC loading process. Experience has shown that these limits are low enough'to prevent the spread of contamination to clean areas and are significantly less than -

-the levels which would cause significant personnel skin dose.

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L SSSC Surface Contamination B 3.3.2 o

BASES APPLICABILITY Verificati(n that the SSSC surface contamination is less than the LC0 limit is performed during LOADING OPERATIONS.

This occurs before TRANSPORT OPERATIONS and STORAGE OPERATIONS. Measurement of the SSSC surface contamination is unnecessary during UNLOADING OPERATIONS as surface contamination would have been measured prior to moving the subject.SSSC-to the ISFSI.

f ACTIONS A Note has been added to the ACTIONS which states that, for-

_this LCO, separate. Condition entry is allowed for each SSSC.

This' is acceptable since the Required Actions for each t

Condition provide appropriate compensatory measures for each

-SSSC not meeting the LCO. Subsequent lSSSCs that don't meet the LC0 are governed by subsequent Condition entry and application of associated Required Actions.

A.1 If the removable surface contamination of an SSSC that has been loaded with spent fuel is not within'the LC0 limits, l

action must be initiated to decontaminate the SSSC and bring the removable surface contamination within limits. The

~ Completion Time of " Prior to TRANSPORT-OPERATIONS""is-appropriate given that the time needed to complete the l

decontamination is indeterminate.

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SURVEILLANCE SR 3.3.2.1 REQUIREMENTS.

This SR verifies that the removable ' surface contamination on g

~ the SSSC is less than the limits in the LCO. The Surveillance is-performed using smear surveys to detect removable surface i

L contamination. The Frequency requires performing the verification prior to initiating TRANSPORT OPERATIONS in order to confirm that the SSSC can be moved to'the ISFSI without spreading. loose contamination.

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L SSSC Surface Contamination a

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-BASES

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REFERENCES

1. SAR,.Section 7.2.1.

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2. IE Circular 81-07, Control of Radioactively Contaminated Material, May 15, 1981.

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3 ISFSI Perimeter Radiation B 3.3.3 B 3.3 SSSC RADIATION PROTECTION B 3.3.3 ISFSI Perimeter Radiation i

I BASES BACKGROUND The regulations governing the operation of an ISFSI set

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limits on radiation doses to the general public (Ref. 1).

This specification provides conservative limits on the ISFSI's contribution to the radiation doses at the ISFSI perimeter fence in order to ensure that regulatory limits are met.

APPLICABLE.

The ISFSI perimeter radiation levels are not an assumption

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SAFETY ANALYSIS in any accident analysis, but are used to ensure compliance 1

with regulatory limits on dose to the public during normal conditions.

LC0 The limits on ISFSI perimeter radiation levels are based on analyses described in the SAR (Ref. 1). The limits were selected to maintain radiation doses to the general public within the limits provided in the regulations.

APPLICABILITY The ISFSI perimeter radiation limits apply during STORAGE OPERATIONS when SSSCs are stored within the ISFSI perimeter.

Average surface dose rate limits on individual SSSCs are provided in Specification 3.3.1, SSSC Average Surface Dose Rate, during LOADING OPERATIONS and these limits ensure that occupational doses during. TRANSPORT OPERATIONS and UNLOADING OPERATIONS are within the estimates contained in the SAR.

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ISFSI Perimeter Radiation B 3.3.3 BASES ACTIONS A.1 If the ISFSI perimeter radiation is not within limits, action must be initiated immediately to restore the perimeter radiation to within the LC0 limits. Failure to meet the ISFSI perimeter limits could lead to exceeding the limits on dose to the general public. As a result, immediate

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action to correct the situation must be initiated.

SURVEILLANCE SR 3.3.3.1 REQUIREMENTS This SR ensures that the ISFSI's contribution to the radiation doses (both-neutron and gamma) at the ISFSI perimeter fence are continuously monitored and are within I

limits. These doses are determined using thermoluminescent I

detectors (TLDs) located at the ISFSI perimeter. These TLDs are read every 92 days.

REFERENCES

1. SAR, Section 7.3.2.2.

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ML20249C721

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