Utah Admin. Code R313-19-70
(1) In expressing the concentrations in Section R313-19-70,
the activity stated is that of the parent radionuclide and takes
into account the radioactive decay products, because many
radionuclides disintegrate into radionuclides which are also
radioactive.
(2) For purposes of Subsection R313-19-13(2)(a) where
there is involved a combination of radionuclides, the limit for
the combination should be derived as follows: Determine for each
radionuclide in the product the ratio between the radioactivity
concentration present in the product and the exempt radioactivity
concentration established in Section R313-19-70 for the specific
radionuclide when not in combination. The sum of the ratios may
not exceed one or unity.
(3) To convert microcuries (uCi) to SI units of
kilobecquerels (kBq), multiply the above values by 37.
Refer to Subsection R313-19-13(2)(a)
TABLE
Column I
Concentration Column II
Element Material Concentration
(Atomic Normally Used Liquid (uCi/ml)
Number) Radionuclide As Gas (uCi/ml) Solid (uCi/g)
Antimony (51) Sb-122 3 E-4
Sb-124 2 E-4
Sb-125 1 E-3
Argon (18) Ar-37 1 E-3
Ar-41 4 E-7
Arsenic (33) As-73 5 E-3
As-74 5 E-4
As-76 2 E-4
As-77 8 E-4
Barium (56) Ba-131 2 E-3
Ba-140 3 E-4
Beryllium (4) Be-7 2 E-2
Bismuth (83) Bi-206 4 E-4
Bromine (35) Br-82 4 E-7 3 E-3
Cadmium (48) Cd-109 2 E-3
Cd-115m 3 E-4
Cd-115 3 E-4
Calcium (20) Ca-45 9 E-5
Ca-47 5 E-4
Carbon (6) C-14 1 E-6 8 E-3
Cerium (58) Ce-141 9 E-4
Ce-143 4 E-4
Ce-144 1 E-4
Cesium (55) Cs-131 2 E-2
Cs-134m 6 E-2
Cs-134 9 E-5
Chlorine (17) Cl-38 9 E-7 4 E-3
Chromium (24) Cr-51 2 E-2
Cobalt (27) Co-57 5 E-3
Co-58 1 E-3
Co-60 5 E-4
Copper (29) Cu-64 3 E-3
Dysprosium (66) Dy-165 4 E-3
Dy-166 4 E-4
Erbium (68) Er-169 9 E-4
Er-171 1 E-3
Europium (63) Eu-152 6 E-4
(T = 9.2 h)
Eu-155 2 E-3
Fluorine (9) F-18 2 E-6 8 E-3
Gadolinium (64) Gd-153 2 E-3
Gd-159 8 E-4
Gallium (31) Ga-72 4 E-4
Germanium (32) Ge-71 2 E-2
Gold (79) Au-196 2 E-3
Au-198 5 E-4
Au-199 2 E-3
Hafnium (72) Hf-181 7 E-4
Hydrogen (1) H-3 5 E-6 3 E-2
Indium (49) In-113m 1 E-2
In-114m 2 E-4
Iodine (53) I-126 3 E-9 2 E-5
I-131 3 E-9 2 E-5
I-132 8 E-8 6 E-4
I-133 1 E-8 7 E-5
I-134 2 E-7 1 E-3
Iridium (77) Ir-190 2 E-3
Ir-192 4 E-4
Ir-194 3 E-4
Iron (26) Fe-55 8 E-3
Fe-59 6 E-4
Krypton (36) Kr-85m 1 E-6
Kr-85 3 E-6
Lanthanum (57) La-140 2 E-4
Lead (82) Pb-203 4 E-3
Lutetium (71) Lu-177 1 E-3
Manganese (25) Mn-52 3 E-4
Mn-54 1 E-3
Mn-56 1 E-3
Mercury (80) Hg-197m 2 E-3
Hg-197 3 E-3
Hg-203 2 E-4
Molybdenum (42) Mo-99 2 E-3
Neodymium (60) Nd-147 6 E-4
Nd-149 3 E-3
Nickel (28) Ni-65 1 E-3
Niobium Nb-95 1 E-3
(Columbium)(41) Nb-97 9 E-3
Osmium (76) Os-185 7 E-4
Os-191m 3 E-2
Os-191 2 E-3
Os-193 6 E-4
Palladium (46) Pd-103 3 E-3
Pd-109 9 E-4
Phosphorus (15) P-32 2 E-4
Platinum (78) Pt-191 1 E-3
Pt-193m 1 E-2
Pt-197m 1 E-2
Pt-197 1 E-3
Potassium (19) K-42 3 E-3
Praseodymium (59) Pr-142 3 E-4
Pr-143 5 E-4
Promethium (61) Pm-147 2 E-3
Pm-149 4 E-3
Rhenium (75) Re-183 6 E-4
Re-186 9 E-3
Re-188 6 E-4
Rhodium (45) Rh-103m 1 E-1
Rh-105 1 E-3
Rubidium (37) Rb-86 7 E-4
Ruthenium (44) Ru-97 4 E-4
Ru-103 8 E-4
Ru-105 1 E-3
Ru-106 1 E-4
Samarium (62) Sm-153 8 E-4
Scandium (21) Sc-46 4 E-4
Sc-47 9 E-4
Sc-48 3 E-4
Selenium (34) Se-75 3 E-3
Silicon (14) Si-31 9 E-3
Silver (47) Ag-105 1 E-3
Ag-110m 3 E-4
Ag-111 4 E-4
Sodium (11) Na-24 2 E-3
Strontium (38) Sr-85 1 E-4
Sr-89 1 E-4
Sr-91 7 E-4
Sr-92 7 E-4
Sulfur (16) S-35 9 E-8 6 E-4
Tantalum (73) Ta-182 4 E-4
Technetium (43) Tc-96m 1 E-1
Tc-96 1 E-3
Tellurium (52) Te-125m 2 E-3
Te-127m 6 E-4
Te-127 3 E-3
Te-129m 3 E-4
Te-131m 6 E-4
Te-132 3 E-4
Terbium (65) Tb-160 4 E-4
Thallium (81) Tl-200 4 E-3
Tl-201 3 E-3
Tl-202 1 E-3
Tl-204 1 E-3
Thulium (69) Tm-170 5 E-4
Tm-171 5 E-3
Tin (50) Sn-113 9 E-4
Sn-125 2 E-4
Tungsten W-181 4 E-3
(Wolfram)(74) W-187 7 E-4
Vanadium (23) V-48 3 E-4
Xenon (54) Xe-131m 4 E-6
Xe-133 3 E-6
Xe-135 1 E-6
Ytterbium (70) Yb-175 1 E-3
Yttrium (39) Y-90 2 E-4
Y-91m 3 E-2
Y-91 3 E-4
Y-92 6 E-4
Y-93 3 E-4
Zinc (30) Zn-65 1 E-3
Zn-69m 7 E-4
Zn-69 2 E-2
Zirconium (40) Zr-95 6 E-4
Zr-97 2 E-4
Beta or gamma
emitting
radioactive
material not
listed above
with half-life
less than 3 years 1 E-10 1 E-6
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Date of Last Change: January 16, 2024
Notice of Continuation: April 6, 2026
Authorizing, and Implemented or Interpreted Law: 19-3-104; 19-6-104