Home > Electronic Reading Room > Document Collections > NRC Regulations (10 CFR) > Part Index > § 30.70 Schedule A--exempt concentrations.
Schedules
§ 30.70 Schedule A--Exempt concentrations.
[See footnotes at the end of
this table]
Element (atomic number) |
Isotope |
Col. I |
Col. II |
Gas Concentration μCi/ml1 |
Liquid and Solid Concentration
μCi/ml2 |
Antimony (51) |
Sb 122 |
|
3 x 10-4 |
Sb 124 |
2 x 10-4 |
Sb 125 |
1 x 10-3 |
Argon (18) |
A 37 |
1 x 10 -3 |
|
A 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 (T/2=9.2 hrs) |
|
6 x 10-4 |
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 `0-4 |
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 10-4 |
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 10-4 |
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
Tc 96 |
|
1 x 10-1
1 x 10-3 |
Tellurium (52) |
Te 125M |
|
2 x 10-3 |
Te 125M |
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
Tl 201
Tl 202
Tl 204 |
|
4 x 10-3
3 x 10-3
1 x 10-3
1 x 10-3 |
Thulium (69) |
Tm 170
Tm 171 |
|
5 x 10-4
5 x 10-3 |
Tin (50) |
Sn 113
Sn 125 |
|
9 x 10-4
2 x 10-4 |
Tungsten (Wolfram) (74) |
W 181
W 187 |
|
4 x 10-3
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 and/or gamma emitting byproduct not
listed above with half-life less than three years |
|
1 x 10-10 |
1 x 10-6 |
Footnotes to Schedule A
- Values are given only for those materials normally
used as gases.
- μCi/gm for solids.
NOTE 1: Many radioisotopes disintegrate into isotopes which are also
radioactive. In expressing the concentrations in Schedule A, the activity
stated is that of the parent isotope and takes into account the daughters.
NOTE 2: For purposes of 30.14 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 established in Schedule
A for the specific isotope when not in combination. The sum of such ratios
may not exceed "1" (i.e., unity).
Example:
[30 FR 8185, June 26, 1965, as amended at 35 FR 3982, Mar. 3, 1970; 38 FR 29314, Oct. 24, 1973; 59 FR 5520, Feb. 7, 1994]
|