ML20214V997

Revised Proposed Tech Specs,Increasing Storage Capacity of Spent Fuel Racks

ML20214V997
Person / Time
Site:	Byron
Issue date:	11/24/1986
From:	COMMONWEALTH EDISON CO.
To:
Shared Package
ML20214V991	List: ML20214V988 ML20214V997
References
NUDOCS 8612100039
Download: ML20214V997 (2)

Text

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DESIGN FEATURES TY is bctsed on SpenF fuel .s rcrcoc^

in Repcm z wHh ennchmenis onc 5.6 FUEL STORAGE burnap in acccedonee with f:3vre 5 G-I l or in c\

CRITICALITY k checkerbcord pa Hun , and )

5. 6.1.1 The spent fuel storage racks are designed and shall be maintained with:

a. A k,ff equivalent to less than or equal to 0.95 when flooded with unborated watar, which includes a conservative allowance s*=3;;335.

• W&.for unce.tainties as described in Section 9.1 of the FSARM C

-and-

b. Thbminal- 14 inch _ center-to-centar distance-between-fuel assem61E wplacetPin- the'31prace racks. -

5.6.1.2 The 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 5.6.2 The spent fuel storage pool is designed and shall be maintained to prevent inadvertent draining of the pool below elevation 423 feet 2 inches.

CAPACITY 5.6.3 The spent fuel storage pool is designed and shall be maintained with a storage capacity limited to no more than_1066 fuel ass'emblies.

2 6 W)

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j 5.7 COMPONENT CYCLIC OR TRANSIENT LIMIT 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.

A nominql 10 3 2. inch nerih - soeth and t o. '4 2. in c h ea si- - We.s h, cenRr - to cenue diHance between foci offemblie.5 placed a cenW- fo penF fuel dor 4<3e rocks and c3 nomina) '1. o s inch Region i s cener dis hnee. be hdeen fv41 a sI<m bMe.5 plaud in Regicm 2 spent- feel storage. r'acks ,

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l gk2gDo P

l BYRON - UNITS 1 & 2 5-5

40lr, , ,- , , , , , , , , , , , , , ,,,, , , , ,

35

. ACCEPTABLE -

. REGION -

30

. ( -

g . -

e . .

25

h. _ _

o g . -

a v

A p 20 g . -

= . -

m

/

[ -

15 m

4 UNACCEPTABLE w . -

p REGION w . -

10 -

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l ~

5 0 ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' '

t 1.5 2.0 2.5 3.0 3.5 4.0 4.5 FUEL ASSDIBLY INITIAL ENRICm1ENT (W/0 U-235)

FIGURE 5.6-1

MINIMUM BURNUP VERSUS INITIAL ENRICmiENT FOR REGION 2 STORAGE BYRON - UNITS 1 & 2 5-Sa l

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