ML20247P243

Proposed Tech Specs Re Design Feature Suppl

ML20247P243
Person / Time
Site:	Waterford
Issue date:	05/21/1998
From:	ENTERGY OPERATIONS, INC.
To:
Shared Package
ML20247P237	List: ML20247P233 ML20247P243
References
NUDOCS 9805270370
Download: ML20247P243 (6)

Text

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DESIGN FEATURES 5.6 FUEL STORAGE CRITICALITY 5.6.1 The spent fuel storage racks are designed and shall be maintained with:

A k,ff equivalent to less than or equal to 0.95 when flooded with a.

unborated water, which includes a conservative allowance for uncertainties.

b.

A nominal 10.'38 inch center-to-center distance between fuel

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assemblies placed in the spent fuel storage racks.

5.6.2 TP. k,ff for new fuel for the first core loading stored dry in the spent fuel storage racks shall not exceed 0.98 when aqueous foam moderation is assumed.

DRAINAGE 5.6.3 The spent fuel pool is designed and shall be maintained to prevent inadvertent draining of the pool below elevation +40.0 MSL.

CAPACITY 5.6.4 The spent fuel pool is designed and shall be maintained with a storage capacity limited to no more than 1088 fuel assemblies.

5.7 COMPONENT CYCLIC OR TRANSIENT LIMITS 5.7.1 The components identified in Table 5.7-1 are designed and shall be maintt!ned within the cyclic or transient limits of Table 5.7-1.

WATERFORD - UNIT 3 5-6 AMENDMENT NO. 7 l

9805270370 980521 l

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ATTACHMENT 2

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l DESIGN FEATURES l

l 5.6 FUEL STORAGE CRITICALITY 5.6.1 The spent fuel storage racks are designed and shall be maintained with:

a. A normal keff g"'r'e"' top _f less than or equal to 0.95 when flooded with unborated l

water, which includes a conservative allowance for uncertainties.

b. A nominal 10.185 38 inch center-to-center distance between fuel assemblies placed in Region 1 (cask storage pit) the spent fuel storage racks.

c. A nominal 8.692 inch center to center distance between fuel assemblies in the Region 2 (spent fuel pool and refueling canal) racks, except for the four southem-most racks in the spent fuel pool which have an increased N-S center-to-center nominal distance of 8.892 inches.

d. New or partially spent fuel assemblies may be allowed unrestricted storage in Region 1 racks.

e. New fuel assemblies may be stored in the Region 2 racks provided that they are stored in a " checkerboard pattern" as illustrated in Figure 5.6-1.

f. Partially spent fuel assemblies with a discharge burnup in the " acceptable range" of

_ Figure 5.6-2 may be allowed unrestricted storage in the Region 2 racks.

g. Partially spent fuel assemblies with a discharge burnup in the " unacceptable range" of Figure 5.6-2 may be stored in the Region 2 racks provided that they are stored in a

" checkerboard pattem", as illustrated in Figure 5.6-1, with spent fuel in the " acceptable

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range" of Figure 5.6-3.

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5.6.2 The k,n for new fuel for 'he Mt core 'cedM; stored dsy in the spent new fuel storage racks I

shall be less than or equal to 0.95 when flooded with unborated water and shall not exceed 0.98 when aqueous foam moderation is assumed.

DRAINAGE 5.6.3 The spent fuel pool is designed and shall be maintained to prevent inadvertent draining of the pool below elevation +40.0 MSL. When fuel is being stored in the cask storage pit and/or the refueling canal, these areas will also be maintained at +40.0 MSL.

CAPACITY 5.6.4 The spent fuel pool is designed and shall be maintained with a storage capacity limited to 9

no more than 40881849 fuel assemblies in the main pool, 255 fuel assemblies in the cask storage

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sit and after permanent plant shutdown 294 fuel assemblies in the refueling canal {Th6 heat f

oadTrom sjEnfTUefsT6fGTiiftErefuefing caTialiraMT6ofsicelidT77XiOE6 BTU /Hr.

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4 Fuel shall not be stored in the spent fuel racks in the cask storage pit or the refueling canal y,

'7 unless all of the racks are installed in each respective area per the design.

Q-WATERFORD - UNIT 3 5-6 AMENDMENT NO.%

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ATTACHMENT 3 1

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l DESIGN FEATURES I

5.6 FUEL STORAGE CRITICALITY 5.6.1 The spent fuel storage racks are designed and shall be maintained with:

a. A normal k rf of less than or equal to 0.95 when flooded with unborated water, which l

e includes a conservative allowance for uncertainties.

b. A nominal 10.185 inch center-to-center distance between fuel assemblies placed in Region 1 (cask storage pit) spent fuel storage racks.

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c. A nominal 8.692 inch center-to-center distance between fuel assemblies in the Region 2 (spent fuel pool and refueling canal) racks, except for the four southern-most racks in the spent fuel pool which have an increased N-S center-to-center nominal distance of 8.892 inches.

d. New or partially spent fuel assemblies may be allowed unrestricted storage in Region 1 racks,

e. New fuel assemblies may be stored in the Region 2 racks provided that they are stored in a " checkerboard pattern" as illustrated in Figure 5.6-1.

f. Partially spent fuel assemblies with a discharge burnup in the " acceptable range" of Figure 5.6-2 may be allowed unrestricted storage in the Region 2 racks.

g. Partially spent fuel assemblies with a discharge burnup in the " unacceptable range" of Figure 5.6-2 may be stored in the Region 2 racks provided that they are stored in a

" checkerboard pattern," as illustrated in Figure 5.6-1, with spent fuel in the " acceptable range" of Figure 5.6-3.

5.6.2 The k., for new fuel stored in the new fuel storage racks shall be less than or equal to 0.95 when flooded with unborated water and shall not exceed 0.98 when aqueous foam moderation is assumed.

DRAINAGE 5.6.3 The spent fuel poolis designed and shall be maintained to prevent inadvertent draining of the pool below elevation +40.0 MSL. When fuel is being stored in the cask storage pit and/or the refueling canal, these areas will also be maintained at +40.0 MSL.

CAPACITY 5.6.4 The spent fuel poolis designed and shall be maintained with a storage capacity limited to j

no more than 1849 fuel assemblies in the main pool,255 fuel assemblies in the cask storage pit and after permanent plant shutdown 294 fuel assemblies in the refueling canal. The heat load from spent fuel stored in the refueling canal racks shall not exceed 1.72 X10E6 BTU /Hr.

Fust shall not be stored in the spent fuel racks in the cask storage pit or the refueling canal unless all of the racks are installed in each respective area per the design.

WATERFORD - UNIT 3 5-6 AMENDMENT NO. l

5.7' COMPONENT CYCLIC OR TRANSIENT LIMITS 5.7.1 The components identified in Table 5.7-1 are designed and shall be maintained within the cyclic or transient limits of Table 5.7-1.

WATERFORD - UNIT 3 5-Sa AMENDMENT NO. l