ML20005F111
| ML20005F111 | |
| Person / Time | |
|---|---|
| Site: | 07000036 |
| Issue date: | 01/03/1990 |
| From: | ABB COMBUSTION ENGINEERING NUCLEAR FUEL (FORMERLY |
| To: | |
| Shared Package | |
| ML20005F107 | List: |
| References | |
| NUDOCS 9001120298 | |
| Download: ML20005F111 (21) | |
Text
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Enclosure I to
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-i" LD-90-001 ri COMBUSTION ENGINEERING, INC.
HEMATITE NUCLEAR FUEL MANUFACTURING FACILITY.
REQUEST FOR LICENSE AMENDMENT LIST OF AFFECTED PAGES JANUARY 3,1990 l
9001120298 900103 PDR-.ADOCK 07000036
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.c Hematite Nuclear Fuel Manufacturing Facility Request for License Amendment Combustion Engineering requests that License SNM-33 for its Nuclear Fuel Manufacturing Facility be amended with the pages in Enclosure II.
These pages provide additional descriptive information on nuclear r
criticality analyses performed on the pelletizing lines in Building i
254.. These additional analytical results should allow removal-of i
License conditions Nos. 36 and 37.
The license application pages affected by this amendment request are listed as follows.- The changed pages are contained in Enclosure II.
LIST OF AFFECTED PAGES I
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Enclosure II to E
LD-90-001 t.
COMBUSTION ' ENGINEERING, INC.
HEMATITE NUCLEAR FUEL MANUFACTURING FACILITY REQUEST FOR LICENSE AMENDMENT PROPOSED LICENSE AMENDMENT PAGES i
JANUARY 3,1990
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i Based on these analyses, it is concluded that-an. overfill condition, should it occur, has only a small effect on the multiplication factor in a large array of hoppers on 30 inch centers.
It is also concluded that a realistic size array.of filled bulk' storage hoppers loaded with UO of 5 w/o enrichment 2
and I w/o water is highly suberitical when the hoppers are in physical contact within the array.
8.3.4.4 Pelletizina Line
- Criticality analyses - of components of the pelletizing line supplement the overall analyses presented in Section 8.3.4.3.
-Their intent is to confirm that credible combinations of SNM and moderator material on the second or third floor or added
'into the pelletizing equipment do not cause the effective multiplication factor to exceed 0.95.
Three series of criticality calculations are described in the following:
- 1) an array.of storage containers (typically 5 gallon or less pails),
- 2) an isolated _ poreformer mixer and 3) a system analysis with explicit modeling of pelletizing equipment.
e In the first series, criticality analyses for storage of SNM on the second or third floor were extended' to evaluate the postulated interspersing of SNM containers with containers of mop water, poreformer and lubricant.
A conservative limit calculation assumes an infinite checkerboard array of UO 2
L containers and water containers.
The analytical assumptions j
are:
a)
Containers are 11 inches diameter and 13 inches high.
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l License No. SNM-33, Docket 70-36 Revision:
1 Date:
1/3/90 Page:
II.8-llm(l) 1
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q b).
2 The U0 containers have 3.5 g/cc U02, 5.0 w/o U 235, I w/oJ water, I w/o starch poreformer and I w/o zinc stearate lubricant.
i c)
The water density in the water containers is varied from 0
[
to-1 g/cc.
d)
Containers are in contact with each other in a-square array.
\\
e)
There is void between containers.
1 i
f)
The array is reflected on top by 12 inches of water and on the' bottom by 12 inches of concrete.
g)
No structural elements are modeled.
KEN 0 was used with the 16 group Hanson and Roach library and with the -generalized geometry option to describe 4 quarter cylinders in contact with each other in a square array.
Figure 11.8.3-7 shows the effective multiplication factor as a
function of water density in the water containers. The maximum value is -less than 0.8 and occurs at a water density of 0.25 g/cc.
The moderating properties of the poreformer and-lubricant are encompassed by the range of water densities analyzed.
Therefore, the above analyses confirm that the criticality criterion is satisfied for any combination of SNM, mop water, poreformer, and lubricant containers within the limits imposed by Section 1.4.2.3.q.
License No. SNM-33, Docket 70-36 Revision:
0 Date:
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The pelletizing line is shown in Figure II.8.3 8 and the pelletizing process is described in Table 11.8.3-2.
The process starts at the top of the line with pneumatic transfer of UO2 powder from the blender into the poreformer mixer (PF p
mixer) on the third floor level.
In the second series of b
criticality calculations, KEN 0 analyses are made for an isolated PF mixer containing extreme quantities of poreformer and V02 powder.
(Later, an analysis of the PF mixer in a configuration including the other equipment shows the appropriateness of the isolated PF mixer analysis.)
The analytical assumptions for the isolated mixer analyses are:
a)
The PF mixer is a truncated cone. The top inside diameter is 30 inches and the bottom inside diameter is 8 inches.
The inside height is 35.5 inches and the top side, and bottom steel walls of the cone are 0.125 inches thick.
b)
The V02 transferred into the PF mixer has 2.5 g/cc density, 5.0 w/o U-235 and I w/o water.
4 c)
The poreformer added to the mixer has 0.677 g/cc density, the chemical formula is C H 0 and the molecular weight 6 10 5 is 162.
KEN 0 was used with the 16 group Hanson and Roach library and with the generalized geometry option to describe the mixer as a truncated cone. The density of the U02 - poreformer mixture in the PF mixer is calculated for the various assumed combinations by assuming that as poreformer is added to UO2 p wder it first fills the voids between V02 particles as determined from the volume difference of theoretical density V0 at 10.96 g/cc and 2
V02 powder density at 2.5 g/cc. When the poreformer exceeds License No. SNM-33, Docket 70-36 Revision:
0 Date:
1/3/90 Page:
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.t the amount needed to fill the voids, the U0 is assumed 2
dispersed in the poreformer and the total mixture volume increases.
e Two situations were analyzed.
In the first, a typical sized batch of 100 Kg of UO2 powder is in the mixer and poreformer is L
added.
Typically the poreformer is 0.15 to 0.25 w/o of the U0, or about 0.2 Kg per batch. At about 21 Kg poreformer the 2
U0 voids are filled. Thereafter, the mixture volume increases 2
I with added poreformer until the mixer is filled at 118 Kg of poreformer.
Table 11.8.3-3 and Figure II.8.3e9 show the results.
The effective multiplication factor increases with poreformer to a maximum value of 0.70 when the mixer is full.
In the second situation analyzed, the mixer is assumed filled.
Three selected mixtures of UO p wder and poreformer are 2
analyzed. The UO loading is varied from 75 Kg to 200 Kg while 2
the poreformer loading varies from 119.5 Kg to 111.8 Kg to maintain a
- constant, full mixer volume.
The effective multiplication factor increases with UO 1 ading to 0.76 at 200 2
Kg U02 - twice the normal U02 loading.
Table 11.8.3-4 and Figure !!.8.3-10 show these results.
The conclusion is that any credible combination of UO overload 2
and poreformer addition satifies the criticality criterion.
In the third series of criticality calculations, the entire front end of the pelletizing line is modeled.
The overall l
system modeled is similar to that modeled for the analyses described previously in Section 11.8.3.4.3, but here the i
pelletizing equipment is modeled in a credible manner.
The analytical assumptions are:
License.No SNM-33, Docket 70 36 Revision:
0 Date:
1/3/90 Page:
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a)
The bulk storage hoppers contain 1000 Kg 00 and the 2
blenders contain 4200 Kg U0.
They all have 3.5 g/cc U0 2
2 density, 5 w/o U-235 and I w/o water, b)
The pelletizing line components contain a-mixture of UO 2
and poreformer in the proportions 100 Kg 00 to 118 Kg 2
poreformer, which is the mixture that produced the maximum k-effective for an isolated poreformer mixer.
Structural materials are not modeled here.
(Previously the steel walls of the isolated poreformer mixer were modeled.)
c)
The system is reflected on top with 12 inches of water, on bottom with 12 inches of concrete, on the west and north by 12 inches of concrete and on the south by 12 inches of water (see Figure !!.8.3-11).
KENO was used with 16 group Hanson and Roach library and with the generalized geometry option.
Figure 11.8.3-11 shows a plan view of the overall arrangement.
Figure 11.8.3-12 shows the model for the bulk storage hoppers and Figure 11.8.3 5 shows the model for the blenders.
Figure !!.8.3-13 shows the detailed model for the vertical arrangement of components of the pelletizing equipment that may contain significant volumes of U0
- 2 Tablo 11.8.3-5 contains KEN 0 calculated eigenvalues for several different situations.
In the first case an isolated conical screw mixer was simulated.
(This mixer is labeled "A"
in Figure 11.8.3-13.)
In the second case all of the hoppers, blenders, and the conical screw mixer were simulated.
In the last case the hoppers, blenders and all of the described pelletizing line were simul ated.
As indicated by these results, there is very little interaction between the mixer or License No. SNM-33, Docket 70-36 Revision: 0 Date:
1/3/90 Page:
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the entire pelletizing line and the hoppers and blenders. Also indicated is that the eigenvalues for this system are far below the safe limit of 0.95 even with the conical mixer filled with 118 kilograms of poreformer.
8.3.5 Buildino 254 Dewaxina and Sinterino The boats of randomly loaded pellets pass through two furnace steps; dewaxing to burn off additives and sintering.
A controlled atmosphere is maintained in the furnaces. The boats meet the requirements of I.4.2.4 for slab limits.
8.3.6 Buildina 254 Grindina The wet grinding
- process, grinder sludge control and criticality control are similar to that described for Building 255 in Section 8.2.8.
Finished pellet inspection may include an alternate optical measurement of pellet dimensions.
8.3.7 Buildina 254 Packaaina Pellets may be arranged onto corrugated trays or loaded randomly into pans that are stacked in a lifting cradle.
The cradle is weighed and then lowered into a vertically oriented shipping container through a transfer port that separates Building 254 from the clean warehouse Building 256.
Alternatively, the randomly filled pans may be loaded into horizontally oriented shipping containers as is done for the pellet line in Building 255.
The pellets are packaged in licensed shipping containers in accordance with the applicable certificate of compliance.
License No. SNM-33, Docket 70-36 Revision:
0 Date:
1/3/90 Page:
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i TABLE 11.8.3-2 STEPS IN PELLETIZING LINE PROCESS Sten No.
Comoonent Action 1.
Blender Manually open bottom valve to drop (Figure 11.8.3-3) about 100 Kg oxide into transparent pipe above rotary valve.
2.
Vacuum Manually operate blower and rotary Transfer System valve to transfer first half of 100 Kg 1
(Figure 11.8.3 8) oxide batch to receiver from which it flows down to poreformer mixer (PF mixer) where weight is measured.
Alternatively, fines from the granulator and pellet press may be substituted for an oxide batch.
Steps 2,3 and 4 are then omitted.
3.
PF Mixer Manually add preweighed charge of poreformer to half batch of oxide in PF mixer. Typically 3 charges (150 to 400 grams each) may be' stored in I liter containers on the third floor level.
(Satifies I.4.2.3.q) 4.
Vacuum Manually operate blower to transfer Transfer System second half of 100 Kg oxide batch to PF mixer and weigh.
5.
PF Mixer Operate PF mixer to mix poreformer and oxide.
License No. SNM 33, Docket 70 36 Revision:
0 Date:
1/3/90 Page:
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s TABLE 11.8.3-2 (Continued)
[
STEPS IN PELLET 171NG LINE PROCESS l
Sten No.
Comoonent Action 6.
Slugging Press Open valve at bottom of PF mixer to and Granulator release mixed oxide to operating slugging press and granulator.
Granulated oxide flows down into l
Lubricant mixer (Lub mixer).
7.
Lubricant Mixer Manually add pre weighed charge of (Lub Mixer) lubricant to Lub mixer. Typically 6 charges (150 grams each) may be stored in 0.S liter containers on the second floor level.
(Satifies 1.4.2.3.q) 8.
Pellet Press Manually open Lub mixer discharge to release oxide mixture to fill pellet press hopper. Operate the press and collect the pellets in randomly loaded boats for the furnaces.
3 9.
Repeat Start again with step 1.
1 1
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License No. SNM-33, Docket 70 36 Revision:
0 Date:
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TABLE 11.8.3 3, l
f EFFECTIVE MULTIPLICATION FACTOR FOR AN ISOLATED MIXER 100 Ko OF UO2 POWDER Loadina of Poreformer. Kas Mixture Heicht. em.
K-effective i
1 42.87 0.08809 +/.00097 51 63.00 0.57431 +/.00549 75 74.29 0.63239 +/.00525 100 84.05 0.67746 +/.00502 118 90.17 (mixer filled) 0.70070 +/.00488 TABLE 11.8.3 4 EFFECTIVE MULTIPLICATION FACTOR FOR AN ISOLATED MIXJB MIXER FILLED WITH 002 POWDER AND P0 REFORMER 002 Loadina. Kas.
Poreformer loadina. Kas.
K-effective 75 119.51 0.65334 +/
.00516 100 117.96 0.70070 +/.00488 200 111.79 0.76165 +/
.00615 TABLE 11.8.3-5 EFFECTIVE MULTIPLICATION FACTOR FOR BUILDING 254 SYSTEMS Vranium Components Modeled K-effecitve 1)
Isolated Conical Screw Mixer 0.67526 +/
.00376
- 2) Hoppers, Blenders, Conical Screw Mixer 0.67698 +/
.00416
- 3) Hoppers, Blenders, Pelletizing Line 0.68173 +/
.00385 License No. SNM 33, Docket 70-36 Revision:
0 Date:
1/3/90 Page:
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0.85 i.
~
Poll Height
= 13 inches
~
Poll Diometer = 11 inches 0'.80
~
uo, Polls Contain Densit Uo,/o U y =5 3.5 g/cc o
5w 23
~
c) 1.0 w o Water o
1.0 w o Lubricant
'j 1.0 w o Poreformer 3 0.75 I
M o
0.70
{
0'6b.00 0.25 0.50 0.75 1.d0 Water Density in H2O Poils, g/cc FIGURE 11.8.3-7 EFFECTIVE MULTIPLICATION FACTOR vs. WATER DENSITY INFINITE CHECKERBOARD ARRAY OF 002 AND WATER CONTAINERS License No. SNM-33, Docket 70 36 Revision: 0 Date:
1/3/90 Page:
II.8-llu
t Poreformer &
C 1 m
Press Fines t,aeuum yi Recycle Hood Receiver 3 ts a.
o 4
y SIl if h
s/
{
f 5m.
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l c g :n s.:,
1 kg/
] VT
,f
- f. '\\j X/\\,EI//\\/\\f b Y52 Slugging Conical
, 22,000 Kg.
Press Screw s' Air Mix.-
Mixer
- JBlender.;
3 r e ;
i
- 7) ; ;. "
Granulator
- c. 9 N;,r?[i.
W@yy c,. 7e f.y e
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hjy )
, da A' Lubricant &
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M-O
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Granulated
,,j Feed Hood p
Jg.,:,
Granulated 1
Feed Removal h
Hood
. \\
x
/ \\/
Vacuum b'ne *P Lubricant Mixer i
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n;.,
N 7
y Pellet g
tphft n
Press
$1
'gg g 4 '"
3 FIGURE 11.8.3 8 BUILDING 254 PELLETIZING LINE E0VIPMENT License No. SNM-33, Docket 70 36 Revision:
0 Date:
1/3/90 Page:
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3 k
u
[
0.80 O.70 1
0.60
, 0.50 z
Os 0.40 Y
?*_'_P*d?__________
x 0.30 2.5 cc 5w U-235 1w Water 0.20
~
Poreformer 0.677 g/cc 0 10 Formulo = CeH o0i3 Molecular Wt. = 162 0'00 0 20 40 60 80 100 120 Poreformer Loading, Kg FIGURE 11.8.3-9 EFFECTIVE MULTIPLICATION FACTOR FOR AN ISOLATED MIXER l-WITH 100 Ka 002 POWDER vs. P0 REFORMER LOADING License No SNM-33, Docket 70-36 Revision:
0 Date:
1/3/90 l
Page:
II.8 llw L
L a
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0.80 I
i i
i i
e 0.78 0.76 t
i 0.74 i
g 0.72
~
.=
0
.o 0. 7 0 r
%-0 UO, Powder 1 0.68 M
2.5 cc 5w U-235 0.66 1w water
~
Poreformer 0.64 Formulo/cc 0.677 g
= C.H o0s i
0.62 uscuier wt. n 162 0'60 75 100 125 150 175 200 UO2 Loading, Kg FIGURE 11.8.3-10 EFFECTIVE MULTIPLICATION FACTOR FOR AN ISOLATED MIXER FILLED WITH 002 POWDER AND P0 REFORMER License No. SNM-33, Docket 70-36 Revision: 0 Date:
1/3/90 Page:
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X Jh=0 gw
- s l
k' Y=484 Y=446 Yw404.
X=l48 X={St X='l36 B
l l
B l
Y=ste OH Y=aya Y=257 -.
H X= tag X=335 l
l Y=215 - -
P l
- Y = 204 O
Y==o3 12" WATER 7
X=111 X=195 X=279 1
X=69 X=153 X=237 l
l hhhhH h
Y=7a v=>.
Y=0 12" H = HOPPER CONCRETE B = BLENDER
^
P = PELLETl21NG EQUlPMENT (NOTE: DIMENSIONS GIVEN IN INCHES)
FIGURE 11.8.3-11 KENO MODEL FOR FRONT-END OF DETAILED PELLET LINE (FOR GENERALIZED GEOMETRY OPTION)
License No. SNM 33, Docket 70 36 Revision:
0 Date:
1/3/90 Page:
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002 LEVEL (1000 Kg) i
+
) 17.28 INCHES f
W i
)23.69 INCHES s
) 11.81 INCHES FLOOR ELEVATION FIGURE 11.8.3-12 KENO MODEL FOR BULK STORASE HOPPER (FOR GENERALIZED GEOMETRY OPTION)
License No. SNM-33, Docket 70 36 Revision: 0 Date:
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-.. - ~ _.. - - -. _
.. -. -. ~ -....
j
- A) TRUNCATED CONE (POREFORMER MIXER)
UPPER DIAMETER = 30 INCHES i
LOWER DIAMETER = 4 WCHES j
HEIGHT = 41.98 WCHES j
~
j L
> B) RIGHT CYLINDER
)
DIAMETER = 4 WCHES HElGHT = 1.048 WCHES 40.04*
O C) TRUNCATED CONE (SLUGGING PRESS HOPPER)
UPPER DIAMETER = 11 WCHES JL VOID BOTTOM DIAMETER = 4 WCHES HEIGHT = 18 WCHES 123 D) RIGHT CYLWDER (GRANULATOR)
DIAMETER = 11.2277 INCHES HEIGHT = 14 INCHES Ik i E) RIGHT CYLINDER l
DIAMETER = 4 INCHES l
HElGHT = 39.77 INCHES 107.77' F) RIGHT CYLINDER (LUB MIXER)
DIAMETER = 18 INCHES HEIGHT = to WCHES J L
? G) RIGHT CLINDER DIAMETER = 4 INCHES HEIGHT = 38 INCHES 1:4' 4L H) TRUNCATED CONE (PELLET PRESS HOPPER)
UPPER DIAMETER = 11 INCHES 88 BOTTOM DIAMETER = 4 INCHES HEIGHT = it INCHES
? 1) RIGHT CYLINDER Ik DIAMETER = 4 INCHES HEIGHT = 8 INCHES FLOOR ELEVATION FIGURE 11.8.3-13 KENO MODEL FOR PELLETIZING LINE (FOR GENERALIZED GEOMETRY OPTION) 1 l
License No. SNM-33, Docket 70-36 Revision:
0 Date:
U3/90 Page:
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'. m Enclosure III to LD-90-001 i.
COMBUSTION ENGINEERING, INC.
r HEMATITE NUCLEAR FUEL MANUFACTURING FACILITY REQUEST FOR LICENSE AMENDMENT t
CHECK FOR APPLICATION' FEE t
I I
l JANUARY 3,1990 L
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