South Carolina Code of Regulations › Chapter 61 - DEPARTMENT OF HEALTH AND ENVIRONMENTAL CONTROL › Subchapter 61-63 - Radioactive Materials (Title A) › Part II - LICENSING OF RADIOACTIVE MATERIAL › Section 61-63.II.RHA 2.25 - Schedule C-Exempt Concentrations

Current through Register Vol. 48, No. 6, June 28, 2024
Element (Atomic Number)
Isotope
Column I Gas concentrationuc/ml [FN1]
Column II Liquid and solid concentration uc/ml
								[FN2]
Antimony (51) .....
Sb 122
3 x 10-4
Sb 124
2 x 10-5
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 10-4
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 (85) ......
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
(T/2 = 9.2 Hrs)
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 10-5
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 149
3 x 10-3
Nd 147
6 x 10-4
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
Polonium (84) .....
Po 210
2 x 10-10
7 x 10-6
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
Radium (88) .......
Ra 226
1 x 10-11
1 x 10-7
Ra 228
2 x 10-11
3 x 10-7
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 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
Tungston (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 and/or gamma
emitting
radioactive
material not
listed above
with half-life
less than 3
years................................
1 x 10-10
1 x 10-6
NOTE 1: Many radioisotopes disintegrate into isotopes
								which are also radioactive. In expressing the concentrations in Schedule C, the
								activity stated is that of the parent isotope and takes into account the
								daughters.
NOTE 2: For purposes of 2.19.2.1 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 C for the specific isotope when not in combination. The sum of such ratios
								may not exceed "1" (i.r., unity).
Example:
Concentration of Isotope A in Product x Exempt
								concentration of Isotope A Concentration of Isotope B in Product <
Exempt 1
concentration of
Isotope B =
[FN1] Values are given only for those materials normally
								used as gases.
[FN2] uc/gm for solids.