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Nevada Administrative Code (Last Updated: January 6, 2015) |
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Chapter459 Hazardous Materials |
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RADIATION CONTROL |
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Licensing of Radioactive Material |
NAC459.186. Table of exempt concentrations.
- Exempt concentrations are:
Element (atomic
number)
Isotope
Column
I
Gas con-
centration
μCi/ml1
Column
II
Liquid
and solid
concen-
tration
μCi/ml2
Antimony (51)
Sb 122
3 x 10-4
Sb 124
2 x 10-4
Sb 125
1 x 10-3
Argon (18)
Ar 37
1 x 10-3
Ar 41
4 x 10-7
Arsenic (33)
As 73
5 x 10-3
As 74
5 x 10-4
As 76
2 x 10-4
As 77
8 x 10-4
Barium (56)
Ba 131
2 x 10-3
Ba 140
3 x 10-4
Beryllium (4)
Be 7
2 x 10-2
Bismuth (83)
Bi 206
4 x 10-4
Bromine (35)
Br 82
4 x 10-7
3 x 10-3
Cadmium (48)
Cd 109
2 x 10-3
Cd 115m
3 x 10-4
Cd 115
3 x 10-4
Calcium (20)
Ca 45
9 x 10-5
Ca 47
5 x 10-4
Carbon (6)
C 14
1 x 10-6
8 x 10-3
Cerium (58)
Ce 141
9 x 10-4
Ce 143
4 x 10-4
Ce 144
1 x 10-4
Cesium (55)
Cs 131
2 x 10-2
Cs 134m
6 x 10-2
Cs 134
9 x 10-5
Chlorine (17)
Cl 38
9 x 10-7
4 x 10-3
Chromium (24)
Cr 51
2 x 10-2
Cobalt (27)
Co 57
5 x 10-3
Co 58
1 x 10-3
Co 60
5 x 10-4
Copper (29)
Cu 64
3 x 10-3
Dysprosium (66)
Dy 165
4 x 10-3
Dy 166
4 x 10-4
Erbium (68)
Er 169
9 x 10-4
Er 171
1 x 10-3
Europium (63)
Eu 152
6 x 10-4
(Tr=9.2 h)
Eu 155
2 x 10-3
Fluorine (9)
F 18
2 x 10-6
8 x 10-3
Gadolinium (64)
Gd 153
2 x 10-3
Gd 159
8 x 10-4
Gallium (31)
Ga 72
4 x 10-4
Germanium (32)
Ge 71
2 x 10-2
Gold (79)
Au 196
2 x 10-3
Au 198
5 x 10-4
Au 199
2 x 10-3
Hafnium (72)
Hf 181
7 x 10-4
Hydrogen (1)
H 3
5 x 10-6
3 x 10-2
Indium (49)
In 113m
1 x 10-2
In 114m
2 x 10-4
Iodine (53)
I 126
3 x 10-9
2 x 10-5
I 131
3 x 10-9
2 x 10-5
I 132
8 x 10-8
6 x 10-4
I 133
1 x 10-8
7 x 10-5
I 134
2 x 10-7
1 x 10-3
Iridium (77)
Ir 190
2 x 10-3
Ir 192
4 x 10-4
Ir 194
3 x 10-4
Iron (26)
Fe 55
8 x 10-3
Fe 59
6 x 10-4
Krypton (36)
Kr 85m
1 x 10-6
Kr 85
3 x 10-6
Lanthanum (57)
La 140
2 x 10-4
Lead (82)
Pb 203
4 x 10-3
Lutetium (71)
Lu 177
1 x 10-3
Manganese (25)
Mn 52
3 x 10-4
Mn 54
1 x 10-3
Mn 56
1 x 10-3
Mercury (80)
Hg 197m
2 x 10-3
Hg 197
3 x 10-3
Hg 203
2 x 10-4
Molybdenum (42)
Mo 99
2 x 10-3
Neodymium (60)
Nd 147
6 x 10-4
Nd 149
3 x 10-3
Nickel (28)
Ni 65
1 x 10-3
Niobium
(Columbium) (41)
Nb 95
1 x 10-3
Nb 97
9 x 10-3
Osmium (76)
Os 185
7 x 10-4
Os 191m
3 x 10-2
Os 191
2 x 10-3
Os 193
6 x 10-4
Palladium (46)
Pd 103
3 x 10-3
Pd 109
9 x 10-4
Phosphorus (15)
P 32
2 x 10-4
Platinum (78)
Pt 191
1 x 10-3
Pt 193m
1 x 10-2
Pt 197m
1 x 10-2
Pt 197
1 x 10-3
Potassium (19)
K 42
3 x 10-3
Praseodymium (59)
Pr 142
3 x 10-4
Pr 143
5 x 10-4
Promethium (61)
Pm 147
2 x 10-3
Pm 149
4 x 10-4
Rhenium (75)
Re 183
6 x 10-3
Re 186
9 x 10-4
Re 188
6 x 10-4
Rhodium (45)
Rh 103m
1 x 10-1
Rh 105
1 x 10-3
Rubidium (37)
Rb 86
7 x 10-4
Ruthenium (44)
Ru 97
4 x 10-3
Ru 103
8 x 10-4
Ru 105
1 x 10-3
Ru 106
1 x 10-4
Samarium (62)
Sm 153
8 x 10-4
Scandium (21)
Sc 46
4 x 10-4
Sc 47
9 x 10-4
Sc 48
3 x 10-4
Selenium (34)
Se 75
3 x 10-3
Silicon (14)
Si 31
9 x 10-3
Silver (47)
Ag 105
1 x 10-3
Ag 110m
3 x 10-4
Ag 111
4 x 10-4
Sodium (11)
Na 24
2 x 10-3
Strontium (38)
Sr 85
1 x 10-3
Sr 89
1 x 10-4
Sr 91
7 x 10-4
Sr 92
7 x 10-4
Sulfur (16)
S 35
9 x 10-8
6 x 10-4
Tantalum (73)
Ta 182
4 x 10-4
Technetium (43)
Tc 96m
1 x 10-1
Tc 96
1 x 10-3
Tellurium (52)
Te 125m
2 x 10-3
Te 127m
6 x 10-4
Te 127
3 x 10-3
Te 129m
3 x 10-4
Te 131m
6 x 10-4
Te 132
3 x 10-4
Terbium (65)
Tb 160
4 x 10-4
Thallium (81)
Tl 200
4 x 10-3
Tl 201
3 x 10-3
Tl 202
1 x 10-3
Tl 204
1 x 10-3
Thulium (69)
Tm 170
5 x 10-4
Tm 171
5 x 10-3
Tin (50)
Sn 113
9 x 10-4
Sn 125
2 x 10-4
Tungsten
(Wolfram) (74)
W 181
4 x 10-3
W 187
7 x 10-4
Vanadium (23)
V 48
3 x 10-4
Xenon (54)
Xe 131m
4 x 10-6
Xe 133
3 x 10-6
Xe 135
1 x 10-6
Ytterbium (70)
Yb 175
1 x 10-3
Yttrium (39)
Y 90
2 x 10-4
Y 91m
3 x 10-2
Y 91
3 x 10-4
Y 92
6 x 10-4
Y 93
3 x 10-4
Zinc (30)
Zn 65
1 x 10-3
Zn 69m
7 x 10-4
Zn 69
2 x 10-2
Zirconium (40)
Zr 95
6 x 10-4
Zr 97
2 x 10-4
Beta, gamma, or both, emitting radioactive material not listed above with a half-life of less than 3 years.
1 x 10-10
1 x 10-6
1 Values are given in Column I only for those materials normally used as gases.
2 μCi/gm for solids.
m Metastable state.
Concentration present in the product and the exempt concentration established in this section for the specific isotope when not in combination. The sum of such ratios may not exceed “1,” that is, unity. An example is:
Concentration of Isotope A in Product
______________________________ +
Exempt concentration of Isotope A
Concentration of Isotope B in Product
______________________________ < 1
=
Exempt concentration of Isotope B
Note 1: Many radioisotopes disintegrate into isotopes which are also radioactive. In expressing the concentrations in the table, the activity stated is that of the parent isotope and takes into account the daughters.
Note 2: For the purposes of NAC 459.184 where there is involved a combination of isotopes, the limit for the combination should be derived as follows: Determine for each isotope in the product the ratio between the concentration present in the product and the exempt concentration.
[Bd. of Health, Radiation Control Reg. Art. 3, Appendix A, eff. 2-28-80]—(NAC A by R084-98, 1-26-99)