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Page Title:
Table 2-2. Table of A1 and A2 Values for Radionuclides (cont) |
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 TM 55-315
Table 2-2. Continued
Symbol of
Element and atomic
A1 (Ci) special
A2 (Ci) normal
radionuclide
number
form
form
204TI
300
10
170Tm
Thulium (69)
300
10
171Tm
1000
100
230U
Uranium (92)
100
0.1
232U
30
0.03
233U
100
0.1
234U
100
0.1
235U
100
0.2
236U
200
0.2
238U
Unlimited
Unlimited
U (natural)
Unlimited
Unlimited
U (enriched)
20%
Unlimited
Unlimited
20% or greater
100
0.1
U (depleted)
Unlimited
Unlimited
3
U (irradiated)
48V
Vanadium (23)
6
6
181w
Tungsten (74)
200
100
185W
1000
25
187W
40
20
127Xe (uncompressed) Xenon (54)
70
70
127Xe (compressed)
5
5
I3lmxe (compressed)
10
10
131mxe (uncompressed)
100
100
133Xe (uncompressed)
1000
1000
133Xe (compressed)
5
5
135Xe (uncompressed)
70
70
135Xe (compressed)
2
2
87y
Yttrium (39)
20
20
90y
10
10
91my
30
30
91y
30
30
92y
10
10
93y
10
10
169Yb
Ytterbium (70)
80
80
175yb
400
25
65Zn
Zinc (30)
30
30
69mzn
40
20
69Zn
300
20
93Zr
Zirconium (40)
1000
200
95Zr
20
20
97Zr
20
20
1
For shipments solely within the United States, the A1 value is 20 curies for americium and plutonium contained in
Am-Be or Pu-Be neutron sources or in nuclear-powered pacemakers.
2
The values of A1 and A2 must be calculated according to the procedure specified in 49 CFR 173.433, taking into
account the activity of the fission products and of the uranium-233 as well as that of the thorium.
3
The values of A1 and A2 must be calculated according to the procedure specified in 49 CFR 173.433, taking into
account the activity of the fission products and plutonium isotopes as well as that of the uranium.
2-10
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