ML20196B743

Forwards Revised Pages to Application for Amend to License SNM-0033 to Increase U-235 Enrichment Limit to 5.0%.Revs Made Per NRC Discussion W/Licensee Staff

ML20196B743
Person / Time
Site:	07000036
Issue date:	06/06/1988
From:	Rode J ABB COMBUSTION ENGINEERING NUCLEAR FUEL (FORMERLY
To:	Bidinger G NRC OFFICE OF NUCLEAR MATERIAL SAFETY & SAFEGUARDS (NMSS)
References
24385, NUDOCS 8806300361
Download: ML20196B743 (7)

Text

P/-l3 70-BL RETURN TO SM SS7 i

CONIBUSTION ENGINEERING iN-y

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George Bidinger, IU' 4'fe,O *T Uranium Fuel Section Division of Fuel Cycle, Medical Academic, and Commercial Use Safety V. S. Nuclear Regulatory Commiscion Washington, DC 20555

Dear Mr. Bidinger:

Enclosed are revised pages to the application for amendment of License SNM-33 to increase the g2 ss enrichment limit to 5.0%.

Revisions have been made pursuant to your discussions with members of our staff.

Sub-stantial changes from the previous submission are denoted by an asterisk

(*) in the right page margin.

A listing of pages comprising this appli-cation is also enclosed.

Again, we certainly appreciate your efforts to expedite processing of this amendment.

Cordially, sA0V

~

James A. Rode, Plant Manager JAR /ead JAR /88/15082 Enclosures I

8806300361 080606 PDR ADOCK 0700 6

C (I OYLh(ncL/ li'f'N Power Systems Post Offce Box 107 (314) 9371691 Combustion Eng neenng. Inc.

Highway P (314) 296 5640 l

Hemat:te, M ssoun 63047

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SNM-33 AMENDMENT APPLICATION r

r LIST OF PAGE REVISIONS i

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l Paae #

Revision #

Date Revised

.I.4-6 3

06/06/88 I

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i 1.4-6a 2

06/06/88 l

11.8-1 1

06/06/88 11.8-3 1

06/06/88 i

11.9 33 X

• DELETED i

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.k 1

A 4

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j 4.2.3 Safety Marains for Individual UnLt1 (continued) i j) 4.

N0 Scrubber x

5.

Centrifuge Supernate Recycle 6.

U0 - Precipitate Overflow Vessel 4

k) The !.ydrometer on -the air inlet to the Dry Blender will be set to alarm at no more than 5% water and checked on a six month period.

i j

1)

The water content will be verified to be less than 0.05 w/o i

in storage cans on the conveyor storage area on a production lot basis (contents of two d;y blenders).

i 4.2.4 Limits for Safe Individual Units (SIVs) f Table 4.2.4 Safe Individual Unit Limits for s 5.0% enriched 00 at optimum j

2 4

moderation.

All Mass and Volume limits have been adjusted to l

provide constant spacing areas for the enrichment shown. Hetero-i i

geneous limits have been developed with optimum rod sizes taken i

to allow for pellet chips, etc.

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Nominal Enrichment /

HOMOGENEOUS HETER 0 GENE 0US j

Mass (Kg V0 )

Limit.

f*

Limit f*

i 2

- 2.5% U285 54

.19 50

.26

>2.4 - 3.0%

41

.23 38

.29

>3.0 - 3.2%

36

.23 36

.29 i

i

>3.2 - 3.4%

35

.25 33

.29

>3.4 - 3.6%

32

.26 30

.30 a

i

>3.6 - 3.8%

28

.26 27

.29

)

>3.8 - 4.1%

24

.25 24

.27 i

l

>4.1 - 4.3%

22

.26 22

.27 I

i

>4.3 - 4.5%

20

.27 20

.27 I

>4.5 - 4.7%

18

.26 18

.27

>4.7 - 5.0%

16

.27 16

.27 i

1 License No. SNM-33, Docket 70-36 Revision:

3 Date: 06/06/88 j

Page !.4-6 i

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4.2.4 Limits for Safe Individual Units (Slusi (continued) l b

Nominal Enrichment /

RQMOGENEQM HETEROGENEOUS

• Volume (litersl Limit f*

Limit f*

- 3.5% UH 5 31

.39 22

.40

>3.5 - 4.1 25

.38 18

.38

>4.1 - 5.0 22

.22 9

.38 Cylinder Diameter (inches)

- 3.5%

10.7

.34 9.5

.36

>'.5 - 4.1 9.8

.33 8.9

.34

>4.1 - 5.0 9.2

.34 8.4

.35 Slab Thickness (inches)

- 3.5%

5.1

.36 4.4

.22 i

>3.5 - 4.1 4.6

.32 3.9

.20 j

>4.1 - 4.3 4.5

.31 3.7

.20 e4.3 - 5.0 4.0

.29 3.5

.20 j

• Fraction of the equivalent unreflected critical spherical volume or mass.

i 4.2.5 Surface Density Method The surface density method may be used to evaluate arrays of SIUs where each mass limit has a fraction critical of 0.3, and volume and cylinder limits have a fraction critical of 0.4. Spacing for mass limited Safe Individual Units is such that the contained UO2 i

and 4

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License No. SNM-33, Docket 70-36 Revision:

1 Date: 06/06/88 Page:

I.4 6a

'l 8.0 PROCESS DESCRIPTION AND SAFETY ANALYSIS This section contains detailed descriptions of'all manufacturing operations in the Hematite facility.

Sufficient detail is pro-vided to permit an independent verification of the adequacy of i

1 controls for the purpose of assuring safe operations.

Nuclear criticality limits are taken froid Chapter I.4.0. However, the intricacies of the equipment in certain operations require further analysis,.which is provided in Chapter II.9.0.

Details of specific calculations used to support various aspects of this analysis are also provided in Chapter 11.9.0.

.,.i>

Present arrangements of equipment are shown in the

• Ings pro-vided in Chapter 11.10.0.

' hose arrangements may 0; changed in accordance with the procedures of Part I. Therefore, this is con-sidered to be a typical analysis for operations conducted within l

the scope of this license.

l 8.1 VF; to U02 Conversion This system is designed to convert uranium hexafluoride to U0 2

powder suitable for pressing into fuel pellets. The equip: ten, is designed to handle a maximum enrichment of 5.0% U2".

The opera-tion is depicted schematically in Figure 11.8.1.

i 8.1.1 Receive and Store UF; VF is received in standard 2-/2 ton cylinders in approved 6

shipping packages.

Upon receipt, the cylinders are placed in the UF cylinder storage area which holds up to 54 cylinders.

6 j

Eighteen additional cylinders may be located adjacent to the vaporizers near the cylinder scale, or in ship,ning packages license No. SNM-33, Docket 70-36 Revision:

1 Date:

06/06/88 Page:

11.8 1

t 8.1.1 Receive and Stare UFg (continued) on the Oxide Building dock.

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As required, a UF cylinder is removed from it's shipping package 6

or storage and connected to the conversion equipment.

The UF storage area is separated from the dock by more than 12 6

feet.

The individual UF cylinders filled with 5.0 wt % U 2 3s are a safe 6

internally moderated controlled subcrit.

On the storage pad they are spaced anar array.

This assures a nuc O

8.1.2 Vaporization 'of' ~tYe'UF by heating the UF cylinder in a steam 6

6 chamber is the flist' step of,this process. Th,ere are two chambers but only one cylirfdFis ^ oil ' l i n t.

it a time.

When one cylinder is almost empty, the-'seconI~cyli.. der starts on line.

Valving arrangementpreventst0SDo'clindersfrombeinginterconnected.

i

'T A condensate line drains the steam ch' ambers through an air gap to take steam condensate to the drain.

The drain line contains a conductivity cell and an automatic shut-off valve.

License No. SNM-33, Docket 70-36 Re ision:

1 Date:

06/06/38 Page: 11.8-3

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