ML20079L118

Proposed Tech Specs Sections 5.4.1.a. & 5.4.2.c Re Enrichment in New & Spent Fuel Storage

ML20079L118
Person / Time
Site:	Palisades, Rensselaer Polytechnic Institute
Issue date:	10/28/1991
From:	CONSUMERS ENERGY CO. (FORMERLY CONSUMERS POWER CO.)
To:
Shared Package
ML18057B341	List: ML20079L118
References
NUDOCS 9111060094
Download: ML20079L118 (7)

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ATTACHMENT 1 Consuniers Power Corapany ,

Palisades Plant i Docket 50 255 I

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l TECHNICAL SPECIFICATION CHANGE REQUEST l ENRICHMENT IN NEW AND SPENT FUEL STORAGE  ;

PROPOSED NEW PAGES October 28, 1991 2 Pages 01110600Y4 Y 110:Z:s PDR ADOCK 05000255 P PDR

5.4 FUEL STORASE

~ 5.4.1 Etw_ fuel Storagg-

a. The pitch of the new fuel storage rack lattice is 29,375 inches, and every other position in the lattice shall be permanently occupied by an;8" ',1" structural steel box beam or core plugs such that the minimur inter-to-center spacing of new fuel assemblies in the

-alternal g storage _ array is 13.26". This distance in the alternating storage lattice is sufficient so that X will not

, exceed 0.95 where fuel assemblies with 216 002 or Gd2 0 rub,r fuel rods or metal rods and a maximum average planar enrichment in the U0, or Gd are in place and optimum mod,0r VO, fueleration is 4.20 rods of assumed.

w/o U 'ed K includes appropriate The calcul?t conservatisms as described in Siemens NucTear Power Corporation

-Report EMF-91-1421(P).

b. New fuel may also be stored in shipping containers,

c. The new fuel storage racks are designed as a Class I structure.

5-4 Amendment No # , Q , JM

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5.4.2 Spent fuel Storace

a. Irradiated fuel bundles Elli be stored, prior to off-site shipment in the stainless steel lined spent fuel pool.

b. (Deleted)

c. The spent fuel storage pool and spore (north) tilt pit are divided into two regious identified as Region I and Region !! as illustrated in Figure 5.4 1. Region I racks are designed and shall be maintained with h nominal 10.25" center-to-center distance between fuel assemblies with the exception of the single Type E rack which has a nominal 11.25" center-to-center distance between fuel assemblies. The Region I spent fuel storage racks are designed such that fuel having a maximum assembly planar average U enrichment of 4.40 w/o placed in the racks would result in a K,, 233 equivalent to s 0.95 when flooded with unborated water. The K ' of s 0.95 includes a conservative allowance for uncertainties. for enrichments above 3.27 w/o U the fuel assemblies must contain 216 rodswhichareeitherUO,,d85, 20 3-U0, or solid metal .

d. Region 11 racks have a 9.17 inch center-to-center spacing. Because of this smaller spacing, strict controls are employed to evaluate burnup of the fuel assembly prior to its placement in Region- 11 cell locations. Upon determination that the fuel assembly meets the burnup requirements of Table 5.4-1, placement in a Region 11 cell is authorized. These positive controls assure the fuel enrichment limits assumed in the safety analyses will not be exceeded.

e. (Deleted)

f. The minimum spent fuel pool water boron concentration shall be 1720 ppm. Boron concentration shall be verified ci least once monthly..

g. The spent fuel racks are designed as a Class I structure.

h. (Deleted)

1. Storage in Region II of the spent fuel pool and spare (north) tilt pit shall be restricted by burnup and enrichment limits specified in Table 5.4-1.

NOTE: Until needed for fuel storage, one Region 11 rack in the northeast corner of the spent fuel pool may be removed and replaced with the cask anti-tipping device.

L Re ferences FSAR Update Chapter 5 FSAR Update Chapter 9 Amendment No. JpJi, JJJ t

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. .. j ATTACHMENT 2 Consumers Power Company Palisades Plant Docket 50-255 ,

. TECHNICAL SPECIFICATION CHANGE REQUEST ENRICHMENT IN NEW AND SPENT FUEL STORAGE FARKED UP PAGES October 28, 1991 1

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l 2 Pages i

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9- 5.4 FUEL--STORAGE 5,4,1 New Fuel Storaae i

-i a.- The pitch- of the new fuel . stor ge rack lattice is 29.375 inches, and every other position in e lattice shall be permanently occupied by an 8" x 8" str- tural steel box beam or core plugs >

such that the minimum cer er-to-center spacing of new fuel assemblies in the alter ting storage array is 13,26". T his distance in the altern ting storage lattice is sufficient so that ,

K ,, will not exceed 0. , where fuelp hi;h centeir3 n;t Cre +h ? " -- I 4+-P y ~ e fM E e, u . .I c ; 7 r 4e t e er 3ctium ruel n;;1bly

.14 in place and optimum (ie, m;p us fees}-moderation is assumed , i

-e n d +h e M,,, a i " "+ ev:nd 0 7 h h :tocege area i; fbeded- '

with unLvioicJ naici. The cal lated K ,, includey2 cen;;rvati e fe. wucertainties - [. w en t :

"~=: described.i, LPC siter; cf-

-12/19/70 and 1/12/77.

b. New fuel'may also be stor d in shipping co ainers,

c. The new fuel storage r eks are designed s a Class I structure.

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)~ 0 YJ~ 00 0ff3fQA2 Amendment Nu 35, #9, W 4e1y 2?r-19aZ I

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5.4.2 spent Tuel Storage

a. Irradiated fuel bundles will be store shipmentinthestainlesssteel-linedhpriortooff-site ut fuel pool,

b. (Deleted)

c. ~he spent fuel storage pool and opare (north) It pit are divided into two regions identified as Region I .d Region 11 as illustrated in Figure 5.4-1. Region I racks are signed and shall be maintained with a nominal 10.25" center-to enter distance between fuel assemblies with the exception o the single Type E rack which has.a nominal 11.25" center-t. center distance between fuel assemblies. The Region I spent fu storage racks are designed such that fuel having a maximum U-235 g f h f' .Loadio 4,U. v/o f " 23L pieced in the racks vould result in aF equivalent to s 0.95 when flooded with unborated veter, e' of s 0.95 includes a conservative allevance for uncerIkknties,

< d. Region II rack hcve a 9.17 inch center-to-center spacing.

//,/g 7 Because of th smaller spacing, strict controls are employed to evaluate bur. p of the fuel assembly prior to its placement in Region II ce 1 locations. Upon determination that the fuel assembly me es the burnup recuirements of Table 5.4-1, placement in a Regio. II cell is authorized. These positive controls-assure the fuel enrichment limits assumed in the safety analyses will not e exceeded,

e. After i stallation of the two-region high density spent fuel racks, he maximum loading for fuel ensemblies in the spent fuel racks a 3.27 v/o of U-235.

f. The inimum spent fuel pool water boron concentration shall be 172 ppa. Boron concentration shall be verified at least once mo hly.

g. T e spent fuel racks are designed as a Class I structure,

h. Deleted) / >

1. Storage in Region II of the spent fuel pool and spare (north) tilt pit.shall be restricted by burnup and enrichment limits specified in Table 5.4-1.

OTE: Until needed-for fuel storage, one Region Il rack in the-northeast cornet of the spent fuel pool may be removed and replaced with the cask anti-tipping device.

References FSAR Update Chapter 5 FSAR Update Chapter 9

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ATTACHMENT 3 .

i Consumers Power Company Palisades Plant Docket 50-255 l

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TECHNICAL SPECIFICATION CHANGE REQUEST ENRICHMENT IN NEW AND SPENT FUEL STORAGE ,

SIEMENS NUCLEAR POWER PROPRIETARY tlEPORT EMF-91-174(P)

October 28, 1991 l.

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