Exempt
Concentrations
Federal regulatory authorities consider certain concentrations of radioactive
materials to be exempt from regulatory authority. In other words, one may
possess up to the specified amount of a particular radionuclide without having
to secure a radioactive materials license . However, this exemption does
not apply to concentrations that may be commercially distributed. (Press
the "Position Papers" category on the left to review several USNRC position
papers on this topic.)
The following is the listing of exempt quantities, in units
of "microcuries per milliliter" for liquids or gases, or "microcuries per
gram" for solids, promulgated by the U. S. Nuclear Regulatory Commission
in Title 10, Code of Federal Regulations, Part 30. Agreement States
may have additional requirements for the use of these materials or interpret
these regulations in a different manner. Please contact IEM for guidance
on state-specific requirements.
Antimony
-
Sb 122 - 3E-4
-
Sb 124 - 2E-4
-
Sb 125 - 1E-3
Argon
-
A 37 - 1E-3 (gas)
-
A 41 - 4E-7 (gas)
Arsenic
-
As 73 - 5E-3
-
As 74 - 5E-4
-
As 76 - 2E-4
-
As 77 - 8E-4
Barium
-
Ba 131 - 2E-3
-
Ba 140 - 3E-4
Beryllium
Bismuth
Bromine
-
Br 82 - 4E-7 (gas)
-
Br 82 - 3E-3
Cadmium
-
Cd 109 - 2E-3
-
Cd 115m - 3E-4
-
Cd 115 - 3E-4
Calcium
-
Ca 45 - 9E-5
-
Ca 47 - 5E-4
Carbon
-
C 14 - 1E-6 (gas)
-
C-14 - 8E-3
Cerium
-
Ce 141 - 9E-4
-
Ce 143 - 4E-4
-
Ce 144 - 1E-4
Cesium
-
Cs 131 - 2E-2
-
Cs 134m - 6E-2
-
Cs 134 - 9E-5
Chlorine
-
Cl 38 - 9E-7 (gas)
-
Cl 38 - 4E-3
Chromium
Cobalt
-
Co 57 - 5E-3
-
Co 58 - 1E-3
-
Co 60 - 5E-4
Copper
Dysprosium
-
Dy 165 - 4E-3
-
Dy 166 - 4E-4
Erbium
-
Er 169 - 9E-4
-
Er 171 - 1E-3
Europium
-
Eu 152 - 6E-4 (T/2=9.2 Hrs).
-
Eu 155 - 2E-3
Fluorine
-
F 18 - 2E-6 (gas)
-
F 18 - 8E-3
Gadolinium
-
Gd 153 - 2E-3
-
Gd 159 - 8E-4
Gallium
Germanium
Gold
-
Au 196 - 2E-3
-
Au 198 - 5E-4
-
Au 199 - 2E-3
Hafnium
Hydrogen
-
H 3 - 5E-6 (gas)
-
H 3 - 3E-2
Indium
-
In 113m- 1E-2
-
In 114m- 2E-4
Iodine
-
I 126 3E-9 (gas)
-
I 126 - 2E-5
-
I 131 3E-9 (gas)
-
I 131- 2E-5
-
I 132 8E-8 (gas)
-
I 132 - 6E-4
-
I 133 1E-8 (gas)
-
I 133 - 7E-5
-
I 134 2E-7 (gas)
-
I 134 - 1E-3
Iridium
-
Ir 190 - 2E-3
-
Ir 192 - 4E-4
-
Ir 194 - 3E-4
Iron
-
Fe 55 - 8E-3
-
Fe 59 - 6E-4
Krypton
-
Kr 85m - 1E-6 (gas)
-
Kr 85 - 3E-6 (gas)
Lanthanum
Lead
Lutetium
Manganese
-
Mn 52 - 3E-4
-
Mn 54 - 1E-3
-
Mn 56 - 1E-3
Mercury
-
Hg 197m - 2E-3
-
Hg 197 - 3E-3
-
Hg 203 - 2E-4
Molybdenum
Neodymium
-
Nd 147 - 6E-4
-
Nd 149 - 3E-3
Nickel
Niobium
-
Nb 95 - 1E-3
-
Nb 97 - 9E-3
Osmium
-
Os 185 - 7E-4
-
Os 191m - 3E-2
-
Os 191 - 2E-3
-
Os 193 - 6E-4
Palladium
-
Pd 103 - 3E-3
-
Pd 109 - 9E-4
Phosphorus
Platinum
-
Pt 191 - 1E-3
-
Pt 193m - 1E-2
-
Pt 197m - 1E-2
-
Pt 197 - 1E-3
Potassium
Praseodymium
-
Pr 142 - 3E-4
-
Pr 143 - 5E-4
Promethium
-
Pm 147 - 2E-3
-
Pm 149 - 4E-4
Rhenium
-
Re 183 - 6E-3
-
Re 186 - 9E-4
-
Re 188 - 6E-4
Rhodium
-
Rh 103m - 1E-1
-
Rh 105 - 1E-3
Rubidium
Ruthenium
-
Ru 97 - 4E-4
-
Ru 103 - 8E-4
-
Ru 105 - 1E-3
-
Ru 106 - 1E-4
Samarium
Scandium
-
Sc 46 - 4E-4
-
Sc 47 - 9E-4
-
Sc 48 - 3E-4
Selenium
Silicon
Silver
-
Ag 105 - 1E-3
-
Ag 110m - 3E-4
-
Ag 111 - 4E-4
Sodium
Strontium
-
Sr 85 - 1E-4
-
Sr 89 - 1E-4
-
Sr 91 - 7E-4
-
Sr 92 - 7E-4
Sulfur
-
S 35 - 9E-8 (gas)
-
S 35 - 6E-4
Tantalum
Technetium
-
Tc 96m - 1E-1
-
Tc 96 - 1E-3
Tellurium
-
Te 125m - 2E-3
-
Te 127m - 6E-4
-
Te 127 - 3E-3
-
Te 129m - 3E-4
-
Te 131m - 6E-4
-
Te 132 - 3E-4
Terbium
Thallium
-
Tl 200 - 4E-3
-
Tl 201 - 3E-3
-
Tl 202 - 1E-3
-
Tl 204 - 1E-3
Thulium
-
Tm 170 - 5E-4
-
Tm 171 - 5E-3
Tin
-
Sn 113 - 9E-4
-
Sn 125 - 2E-4
Tungsten
-
W 181 - 4E-3
-
W 187 - 7E-4
Vanadium
Xenon
-
Xe 131m - 4E-6 (gas)
-
Xe 133 3E-6 (gas)
-
Xe 135 1E-6 (gas)
Ytterbium
Yttrium
-
Y 90 . - 2E-4
-
Y 91m - 3E-2
-
Y 91 - 3E-4
-
Y 92 - 6E-4
-
Y 93 - 3E-4
Zinc
-
Zn 65 - 1E-3
-
Zn 69m - 7E-4
-
Zn 69 - 2E-2
Zirconium
-
Zr 95 - 6E-4
-
Zr 97 - 2E-4
Beta and/or gamma emitting byproduct material not listed above with half-life
less than 3 years - 1E-10 (gas)
Beta and/or gamma emitting byproduct material not listed above with half-life
less than 3 years - 1E-6
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