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UF6 Cylinder Data Summary

Cylinder Model
Nominal Diam. (in.)
Material of Construction
Minimum Volume
Approximate Tare Weight Without Valve Protector
Maximum Enrichment Uranium-235
Shipping Limit Maximum, a UF6
ft3
liters
lb
kg
Weight %
lb
kg
1S
1.5
Nickel
0.0053
0.15
1.75
0.79
100.00
1.0
0.45
2S
.5
Nickel
0.026
0.74
4.2
1.91
100.00
4.9
2.22
5A
5
Monel
0.284
8.04
55
25
100.00
55
24.95
5B
5
Nickel
0.284
8.04
55
25
100.00
55
24.95
8A
8
Monel
1.319
37.35
120
54
12.5
255
115.67
12A
12
Nickel
2.38
67.4
185
84
5.0
460
208.7
12B
12
Monel
2.38
67.4
185
84
5.0
460
208.7
308c
30
Steel
26.0
736.0
1,400
635
5.0b
5,020
2,277
48A
48
Steel
108.9
3,.84
4,500
2,041
4.5b
21,030
9,539
48Xd
48
Steel
108.9
3,084
4,500
2,041
4.5b,g
21,030
9,539
48F
48
Steel
140.0
3,964
5,200
2,356
4.5b
27,030
12,261
48G
48
Steel
139.0
3,936
2,600
1,179
1.0f
26,840e
12,174e
48Yd
48
Steel
142.7
4,041
5,200
2,359
4.5b
27,560
12,501
48H
48
Steel
140.0
3,964
3,170
1,438
1.0f
27,030
12,261
48HX
48
Steel
140.0
3,964
3,170
1,438
1.0f
27,030
12,261
480M
48
Steel
140.0
3,964
3,050
1,386
1.0
27,030
12,261


a
Shipping limits are based on 250°F (121°C) maximum UF6 temperature (203.3 LB UF6/ft3), certified minimum internal volumes for all cylinders, which provides a 5% ullage for safety. The operating limits apply to UF6 with a minimum purity of 99.5%. More restrictive measures are required if additional impurities are present. The maximum UF6 temperature must not be exceeded.

bMaximum enrichments indicated require moderation control equivalent to a UF6 purity of 99.5%. Without moderation control, the maximum permissible enrichment is 1.0 wt % uranium-235

cThis cylinder replaces model 30A cylinder.

dModels 48X and 48Y replace Models 48A and 48F whose volumes have not been certified.

eFor DOE gaseous diffusion plant depleted uranium with UF6 purity in excess of 99.5%, the shipping limit is 28,000 LB for cylinders with 8,880 LB water capacity or greater.

fEnrichment to 4.5 wt % is safe with moderation control equivalent to a UF6 purity of 99.5%, but limited to 1.0 wt % uranium-235 for shipment.

gEnrichment to 5.0 wt % is safe with moderation control equivalent to a UF6 purity of 99.9%, but limited to 4.5 wt % for shipping.

Volumes and fill limits for different types of uranium hexafluoride cylinders.

Slide 35 of 43




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