Nebraska Administrative Code › Topic - HEALTH AND HUMAN SERVICES SYSTEM › Title 180 - CONTROL OF RADIATION › Chapter 3 - LICENSING OF RADIOACTIVE MATERIAL › Appendix 3-A - EXEMPT CONCENTRATIONS

Current through June 17, 2024
Element (atomic
				number)
Isotope
Column I Gas Concentration µCi /
				ml*
Column II Liquid and Solid Concentration
				µCi / ml **
Antimony (51)
Sb-122
3E-4
Sb-124
2E-4
Sb-125
1E-3
Argon (18)
Ar-37
1E-3
Ar-41
4E-7
Arsenic (33)
As-73
5E-3
As-74
5E-4
As-76
2E-4
As-77
8E-4
Barium (56)
Ba-131
2E-3
Ba-140
3E-4
Beryllium (4)
Be-7
2E-2
Bismuth (83)
Bi-206
4E-4
Bromine (35)
Br-82
4E-7
3E-3
Cadmium (48)
Cd-109
2E-3
Cd-115m
3E-4
Cd-115
3E-4
Calcium (20)
Ca-45
9E-5
Ca-47
5E-4
Carbon (6)
C-14
1E-6
8E-3
Cerium (58)
Ce-141
9E-4
Ce-143
4E-4
Ce-144
1E-4
Cesium (55)
Cs-131
2E-2
Cs-134m
6E-2
Cs-134
9E-5
Chlorine (17)
Cl-38
9E-7
4E-3
Chromium (24)
Cr-51
2E-2
Cobalt (27)
Co-57
5E-3
Copper (29)
Co-58
1E-3
Co-60
5E-4
Cu-64
3E-3
Dysprosium (66)
Dy-165
4E-3
Dy-166
4E-4
Erbium (68)
Er-169
9E-4
Er-171
1E-3
Europium (63)
Eu-152 (T/2=
				9.2hr
													
				s)
6E-4
Eu-155
2E-3
Fluorine (9)
F-18
2E-6
8E-3
Gadolinium (64)
Gd-153
2E-3
Gd-159
8E-4
Gallium (31)
Ga-72
4E-4
Germanium (32)
Ge-71
2E-2
Gold (79)
Au-196
2E-3
Au-198
5E-4
Au-199
2E-3
Hafnium (72)
Hf-181
7E-4
Hydrogen (1)
H-3
5E-6
3E-2
Indium (49)
In-113m
1E-2
In-114m
2E-4
Iodine (53)
I-126
3E-9
2E-5
I-131
3E-9
2E-5
I-132
8E-8
6E-4
I-133
1E-8
7E-5
I-134
2E-7
1E-3
Iridium (77)
Ir-190
2E-3
Ir-192
4E-4
Ir-194
3E-4
Iron (26)
Fe-55
8E-3
Fe-59
6E-4
Krypton (36)
Kr-85m
1E-6
Kr-85
3E-6
Lanthanum (57)
La-140
2E-4
Lead (82)
Pb-203
4E-3
Lutetium (71)
Lu-177
1E-3
Manganese (25)
Mn-52
3E-4
Mn-54
1E-3
Mn-56
1E-3
Mercury (80)
Hg-197m
2E-3
Hg-197
3E-3
Hg-203
2E-4
Molybdenum (42)
Mo-99
2E-3
Neodymium (60)
Nd-147
6E-4
Nd-149
3E-3
Nickel (28)
Ni-65
1E-3
Niobium (Columbium)(41)
Nb-95
1E-3
Nb-97
9E-3
Osmium (76)
Os-185
7E-4
Os-191m
3E-2
Os-191
2E-3
Os-193
6E-4
Palladium (46)
Pd-103
3E-3
Pd-109
9E-4
Phosphorus (15)
P-32
2E-4
Platinum (78)
Pt-191
1E-3
Pt-193m
1E-2
Pt-197m
1E-2
Pt-197
1E-3
Potassium (19)
K-42
3E-3
Praseodymium (59)
Pr-142
3E-4
Pr-143
5E-4
Promethium (61)
Pm-147
2E-3
Pm-149
4E-4
Rhenium (75)
Re-183
6E-3
Re-186
9E-4
Re-188
6E-4
Rhodium (45)
Rh-103m
1E-1
Rh-105
1E-3
Rubidium (37)
Rb-86
7E-4
Ruthenium (44)
Ru-97
4E-3
Ru-103
8E-4
Ru-105
1E-3
Ru-106
1E-4
Samarium (62)
Sm-153
8E-4
Scandium (21)
Sc-46
4E-4
Sc-47
9E-4
Sc-48
3E-4
Selenium (34)
Se-75
3E-3
Silicon (14)
Si-31
9E-3
Silver (47)
Ag-105
1E-3
Ag-110m
3E-4
Ag-111
4E-4
Sodium (11)
Na-24
2E-3
Strontium (38)
Sr-85
1E-3
Sr-89
1E-4
Sr-91
7E-4
Sr-92
7E-4
Sulfur (16)
S-35
9E-8
6E-4
Tantalum (73)
Ta-182
4E-4
Technetium (43)
Tc-96m
1E-1
Tc-96
1E-3
Tellurium (52)
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 (65)
Tb-160
4E-4
Thallium (81)
Tl-200
4E-3
Tl-201
3E-3
Tl-202
1E-3
Tl-204
1E-3
Thulium (69)
Tm-170
5E-4
Tm-171
5E-3
Tin (50)
Sn-113
9E-4
Sn-125
2E-4
Tungsten (Wolfram)(74)
W-181
4E-3
W-187
7E-4
Vanadium (23)
V-48
3E-4
Xenon (54)
Xe-131m
4E-6
Xe-133
3E-6
Xe-135
1E-6
Ytterbium (70)
Yb-175
1E-3
Yttrium (39)
Y-90
2E-4
Y-91m
3E-2
Y-91
3E-4
Y-92
6E-4
Y-93
3E-4
Zinc (30)
Zn-65
1E-3
Zn-69m
7E-4
Zn-69
2E-2
Zirconium (40)
Zr-95
6E-4
Zr-97
2E-4
Beta or gamma emitting radioactive material not listed above
				with half-life less than 3 years
1E-10
1E-6
*Values are given in Column I only for those materials normally used as
	 gases.
** µCi /gm for solids.
Many radioisotopes disintegrate into isotopes which are also
	 radioactive. In expressing the concentrations in 180 NAC 3, Appendix 003-A the
	 activity stated is that of the parent isotope and takes into account the
	 daughters.
For purposes of 180 NAC 3-004 where there is involved a combination of
	 isotopes, the limit for the combination must 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 Appendix 003-A for the
	 specific isotope when not in combination. The sum of such ratios may not exceed
	 "1", or unity.
Concentration of Isotope A in Product + Concentration of Isotope B in
	 Product = [LESS THAN EQUAL TO]1
Exempt concentration of Isotope A Exempt concentration of Isotope
	 B
To convert µCi /ml to SI units of MBq per liter multiply the
	 above value by 37.
Zirconium (40) Zr-97 2E-4 µCi /ml multiplied by 37 is equivalent
	 to 74E+4 MBq/l)