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
|
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)
