10 CFR 30.70 – Schedule A–Exempt concentrations
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[See footnotes at end of this table]
| Element (atomic number) | Isotope | Col. I | Col. II |
|---|---|---|---|
| Gas concentration µCi/ml 1 | Liquid and solid concentration µCi/ml 2 | ||
| Antimony (51) | Sb 122 | 3 × 10 | |
| Sb 124 | 2 × 10 | ||
| Sb 125 | 1 × 10 | ||
| Argon (18) | A 37 | 1 × 10 | |
| A 41 | 4 × 10 | ||
| Arsenic (33) | As 73 | 5 × 10 | |
| As 74 | 5 × 10 | ||
| As 76 | 2 × 10 | ||
| As 77 | 8 × 10 | ||
| Barium (56) | Ba 131 | 2 × 10 | |
| Ba 140 | 3 × 10 | ||
| Beryllium (4) | Be 7 | 2 × 10 | |
| Bismuth (83) | Bi 206 | 4 × 10 | |
| Bromine (35) | Br 82 | 4 × 10 | 3 × 10 |
| Cadmium (48) | Cd 109 | 2 × 10 | |
| Cd 115m | 3 × 10 | ||
| Cd 115 | 3 × 10 | ||
| Calcium (20) | Ca 45 | 9 × 10 | |
| Ca 47 | 5 × 10 | ||
| Carbon (6) | C 14 | 1 × 10 | 8 × 10 |
| Cerium (58) | Ce 141 | 9 × 10 | |
| Ce 143 | 4 × 10 | ||
| Ce 144 | 1 × 10 | ||
| Cesium (55) | Cs 131 | 2 × 10 | |
| Cs 134m | 6 × 10 | ||
| Cs 134 | 9 × 10 | ||
| Chlorine (17) | Cl 38 | 9 × 10 | 4 × 10 |
| Chromium (24) | Cr 51 | 2 × 10 | |
| Cobalt (27) | Co 57 | 5 × 10 | |
| Co 58 | 1 × 10 | ||
| Co 60 | 5 × 10 | ||
| Copper (29) | Cu 64 | 3 × 10 | |
| Dysprosium (66) | Dy 165 | 4 × 10 | |
| Dy 166 | 4 × 10 | ||
| Erbium (68) | Er 169 | 9 × 10 | |
| Er 171 | 1 × 10 | ||
| Europium (63) | Eu 152 | 6 × 10 | |
| (T/2 = 9.2 Hrs) | |||
| Eu 155 | 2 × 10 | ||
| Fluorine (9) | F 18 | 2 × 10 | 8 × 10 |
| Gadolinium (64) | Gd 153 | 2 × 10 | |
| Gd 159 | 8 × 10 | ||
| Gallium (31) | Ga 72 | 4 × 10 | |
| Germanium (32) | Ge 71 | 2 × 10 | |
| Gold (79) | Au 196 | 2 × 10 | |
| Au 198 | 5 × 10 | ||
| Au 199 | 2 × 10 | ||
| Hafnium (72) | Hf 181 | 7 × 10 | |
| Hydrogen (1) | H 3 | 5 × 10 | 3 × 10 |
| Indium (49) | In 113m | 1 × 10 | |
| In 114m | 2 × 10 | ||
| Iodine (53) | I 126 | 3 × 10 | 2 × 10 |
| I 131 | 3 × 10 | 2 × 10 | |
| I 132 | 8 × 10 | 6 × 10 | |
| I 133 | 1 × 10 | 7 × 10 | |
| I 134 | 2 × 10 | 1 × 10 | |
| Iridium (77) | Ir 190 | 2 × 10 | |
| Ir 192 | 4 × 10 | ||
| Ir 194 | 3 × 10 | ||
| Iron (26) | Fe 55 | 8 × 10 | |
| Fe 59 | 6 × 10 | ||
| Krypton (36) | Kr 85m | 1 × 10 | |
| Kr 85 | 3 × 10 | ||
| Lanthanum (57) | La 140 | 2 × 10 | |
| Lead (82) | Pb 203 | 4 × 10 | |
| Lutetium (71) | Lu 177 | 1 × 10 | |
| Manganese (25) | Mn 52 | 3 × 10 | |
| Mn 54 | 1 × 10 | ||
| Mn 56 | 1 × 10 | ||
| Mercury (80) | Hg 197m | 2 × 10 | |
| Hg 197 | 3 × 10 | ||
| Hg 203 | 2 × 10 | ||
| Molybdenum (42) | Mo 99 | 2 × 10 | |
| Neodymium (60) | Nd 147 | 6 × 10 | |
| Nd 149 | 3 × 10 | ||
| Nickel (28) | Ni 65 | 1 × 10 | |
| Niobium (Columbium) (41) | Nb 95 | 1 × 10 | |
| Nb 97 | 9 × 10 | ||
| Osmium (76) | Os 185 | 7 × 10 | |
| Os 191m | 3 × 10 | ||
| Os 191 | 2 × 10 | ||
| Os 193 | 6 × 10 | ||
| Palladium (46) | Pd 103 | 3 × 10 | |
| Pd 109 | 9 × 10 | ||
| Phosphorus (15) | P 32 | 2 × 10 | |
| Platinum (78) | Pt 191 | 1 × 10 | |
| Pt 193m | 1 × 10 | ||
| Pt 197m | 1 × 10 | ||
| Pt 197 | 1 × 10 | ||
| Potassium (19) | K 42 | 3 × 10 | |
| Praseodymium (59) | Pr 142 | 3 × 10 | |
| Pr 143 | 5 × 10 | ||
| Promethium (61) | Pm 147 | 2 × 10 | |
| Pm 149 | 4 × 10 | ||
| Rhenium (75) | Re 183 | 6 × 10 | |
| Re 186 | 9 × 10 | ||
| Re 188 | 6 × 10 | ||
| Rhodium (45) | Rh 103m | 1 × 10 | |
| Rh 105 | 1 × 10 | ||
| Rubidium (37) | Rb 86 | 7 × 10 | |
| Ruthenium (44) | Ru 97 | 4 × 10 | |
| Ru 103 | 8 × 10 | ||
| Ru 105 | 1 × 10 | ||
| Ru 106 | 1 × 10 | ||
| Samarium (62) | Sm 153 | 8 × 10 | |
| Scandium (21) | Sc 46 | 4 × 10 | |
| Sc 47 | 9 × 10 | ||
| Sc 48 | 3 × 10 | ||
| Selenium (34) | Se 75 | 3 × 10 | |
| Silicon (14) | Si 31 | 9 × 10 | |
| Silver (47) | Ag 105 | 1 × 10 | |
| Ag 110m | 3 × 10 | ||
| Ag 111 | 4 × 10 | ||
| Sodium (11) | Na 24 | 2 × 10 | |
| Strontium (38) | Sr 85 | 1 × 10 | |
| Sr 89 | 1 × 10 | ||
| Sr 91 | 7 × 10 | ||
| Sr 92 | 7 × 10 | ||
| Sulfur (16) | S 35 | 9 × 10 | 6 × 10 |
| Tantalum (73) | Ta 182 | 4 × 10 | |
| Technetium (43) | Tc 96m | 1 × 10 | |
| Tc 96 | 1 × 10 | ||
| Tellurium (52) | Te 125m | 2 × 10 | |
| Te 127m | 6 × 10 | ||
| Te 127 | 3 × 10 | ||
| Te 129m | 3 × 10 | ||
| Te 131m | 6 × 10 | ||
| Te 132 | 3 × 10 | ||
| Terbium (65) | Tb 160 | 4 × 10 | |
| Thallium (81) | Tl 200 | 4 × 10 | |
| Tl 201 | 3 × 10 | ||
| Tl 202 | 1 × 10 | ||
| Tl 204 | 1 × 10 | ||
| Thulium (69) | Tm 170 | 5 × 10 | |
| Tm 171 | 5 × 10 | ||
| Tin (50) | Sn 113 | 9 × 10 | |
| Sn 125 | 2 × 10 | ||
| Tungsten (Wolfram) (74) | W 181 | 4 × 10 | |
| W 187 | 7 × 10 | ||
| Vanadium (23) | V 48 | 3 × 10 | |
| Xenon (54) | Xe 131m | 4 × 10 | |
| Xe 133 | 3 × 10 | ||
| Xe 135 | 1 × 10 | ||
| Ytterbium (70) | Yb 175 | 1 × 10 | |
| Yttrium (39) | Y 90 | 2 × 10 | |
| Y 91m | 3 × 10 | ||
| Y 91 | 3 × 10 | ||
| Y 92 | 6 × 10 | ||
| Y 93 | 3 × 10 | ||
| Zinc (30) | Zn 65 | 1 × 10 | |
| Zn 69m | 7 × 10 | ||
| Zn 69 | 2 × 10 | ||
| Zirconium (40) | Zr 95 | 6 × 10 | |
| Zr 97 | 2 × 10 | ||
| Beta and/or gamma emitting byproduct material not listed above with half-life less than 3 years | 1 × 10 | 1 × 10 |
Footnotes to Schedule A:
1 Values are given only for those materials normally used as gases.
2 µCi/gm for solids.
Determine for each isotope in the product the ratio between the concentration present in the product and the exempt concentration established in Schedule A for the specific isotope when not in combination. The sum of such ratios may not exceed “1” (