C.M.R. 10, 144, ch. 220, pt. C, sch. A
Column I | Column I | ||
Element (atomic number) | Isotope | Gas Concentration µCi/ml11 | Liquid and Solid Concentration µCi/ml12 |
Antimony (51) | Sb-122 | 3X10-4 | |
Sb-124 | 2X10-4 | ||
Sb-125 | 1X10-3 | ||
Argon (18) | Ar-37 | 1X10-3 | |
Ar-41 | 4X10-7 | ||
Arsenic (33) | As-73 | 5X10-3 | |
As-74 | 5X10-4 | ||
As-76 | 2X10-4 | ||
As-77 | 8X10-4 | ||
Barium (56) | Ba-131 | 2X10-3 | |
Ba-140 | 3X10-4 | ||
Beryllium (4) | Be-7 | 2X10-2 | |
Bismuth (83) | Bi-206 | 4X10-4 | |
Bromine (35) | Br-82 | 4X10-7 | 3X10-3 |
Cadmium (48) | Cd-109 | 2X10-3 | |
Cd-115m | 3X10-4 | ||
Cd-115 | 3X10-4 | ||
Calcium (20) | Ca-45 | 9X10-5 | |
Ca-47 | 5X10-4 | ||
Carbon (6) | C-14 | 1X10-6 | 8X10-3 |
Cerium (58) | Ce-141 | 9X10-4 | |
Ce-143 | 4X10-4 | ||
Ce-144 | 1X10-4 | ||
Cesium (55) | Cs-131 | 2X10-2 | |
Cs-134m | 6X10-2 | ||
Cs-134 | 9X10-5 | ||
Chlorine (17) | Cl-38 | 9X10-7 | 4X10-3 |
Chromium (24) | Cr-51 | 2X10-2 | |
Cobalt (27) | Co-57 | 5X10-3 | |
Co-58 | 1X10-3 | ||
Co-60 | 5X10-4 | ||
Copper (29) | Cu-64 | 3X10-3 | |
Dysprosium (66) | Dy-165 | 4X10-3 | |
Dy-166 | 4X10-4 | ||
Erbium (68) | Er-169 | 9X10-4 | |
Er-171 | 1X10-3 |
11 Values are given in Column I only for those materials normally used as gases.
12 µCi/gm for solids.
Column I | Column II | ||
Element (atomic number) | Isotope | Gas Concentration µCi/ml13 | Liquid and Solid Concentration µCi/ml14 |
Europium (63) | Eu-152 | 6X10-4 | |
(Tr=9.2 hr) | |||
Eu-155 | 2X10-3 | ||
Fluorine (9) | F-18 | 2X10-6 | 8X10-3 |
Gadolinium (64) | Gd-153 | 2X10-3 | |
Gd-159 | 8X10-4 | ||
Gallium (31) | Ga-72 | 4X10-4 | |
Germanium (32) | Ge-71 | 2X10-2 | |
Gold (79) | Au-196 | 2X10-3 | |
Au-198 | 5X10-4 | ||
Au-199 | 2X10-3 | ||
Hafnium (72) | Hf-181 | 7X10-4 | |
Hydrogen (1) | H-3 | 5X10-6 | 3X10-2 |
Indium (49) | In-113m | 1X10-2 | |
In-114m | 2X10-4 | ||
Iodine (53) | I-126 | 3X10-9 | 2X10-5 |
I-131 | 3X10-9 | 2X10-5 | |
I-132 | 8X10-8 | 6X10-4 | |
I-133 | 1X10-8 | 7X10-5 | |
I-134 | 2X10-7 | 1X10-3 | |
Iridium (77) | Ir-190 | 2X10-3 | |
Ir-192 | 4X10-4 | ||
Ir-194 | 3X10-4 | ||
Iron (26) | Fe-55 | 8X10-3 | |
Fe-59 | 6X10-4 | ||
Krypton (36) | Kr-85m | 1X10-6 | |
Kr-85 | 3X10-6 | ||
Lanthanum (57) | La-140 | 2X10-4 | |
Lead (82) | Pb-203 | 4X10-3 | |
Lutetium (71) | Lu-177 | 1X10-3 | |
Manganese (25) | Mn-52 | 3X10-4 | |
Mn-54 | 1X10-3 | ||
Mn-56 | 1X10-3 | ||
Mercury (80) | Hg-197m | 2X10-3 | |
Hg-197 | 3X10-3 | ||
Hg-203 | 2X10-4 | ||
Molybdenum (42) | Mo-99 | 2X10-3 | |
Neodymium (60) | Nd-147 | 6X10-4 | |
Nd-149 | 3X10-3 | ||
Nickel (28) | Ni-65 | 1X10-3 | |
Niobium (Columbium) (41) | Nb-95 | 1X10-3 | |
Nb-97 | 9X10-3 |
13 Values are given in Column I only for those materials normally used as gases.
14 µCi/gm for solids.
Column I | Column II | ||
Element (atomic number) | Isotope | Gas Concentration µCi/ml15 | Liquid and Solid Concentration µCi/ml16 |
Osmium (76) | Os-185 | 7X10-4 | |
Os-191m | 3X10-2 | ||
Os-191 | 2X10-3 | ||
Os-193 | 6X10-4 | ||
Palladium (46) | Pd-103 | 3X10-3 | |
Pd-109 | 9X10-4 | ||
Phosphorus (15) | P-32 | 2X10-4 | |
Platinum (78) | Pt-191 | 1X10-3 | |
Pt-193m | 1X10-2 | ||
Pt-197m | 1X10-2 | ||
Pt-197 | 1X10-3 | ||
Potassium (19) | K-42 | 3X10-3 | |
Praseodymium (59) | Pr-142 | 3X10-4 | |
Pr-143 | 5X10-4 | ||
Promethium (61) | Pm-147 | 2X10-3 | |
Pm-149 | 4X10-4 | ||
Rhenium (75) | Re-183 | 6X10-3 | |
Re-186 | 9X10-4 | ||
Re-188 | 6X10-4 | ||
Rhodium (45) | Rh-103m | 1X10-1 | |
Rh-105 | 1X10-3 | ||
Rubidium (37) | Rb-86 | 7X10-4 | |
Ruthenium (44) | Ru-97 | 4X10-3 | |
Ru-103 | 8X10-4 | ||
Ru-105 | 1X10-3 | ||
Ru-106 | 1X10-4 | ||
Samarium (62) | Sm-153 | 8X10-4 | |
Scandium (21) | Sc-46 | 4X10-4 | |
Sc-47 | 9X10-4 | ||
Sc-48 | 3X10-4 | ||
Selenium (34) | Se-75 | 3X10-3 | |
Silicon (14) | Si-31 | 9X10-3 | |
Silver (47) | Ag-105 | 1X10-3 | |
Ag-110m | 3X10-4 | ||
Ag-111 | 4X10-4 | ||
Sodium (11) | Na-24 | 2X10-3 | |
Strontium (38) | Sr-85 | 1X10-3 | |
Sr-91 | 7X10-4 | ||
Sr-92 | 7X10-4 | ||
Sulfur (16) | S-35 | 9X10-8 | 6X10-4 |
Tantalum (73) | Ta-182 | 4X10-4 |
15 Values are given in Column I only for those materials normally used as gases.
16 µCi/gm for solids.
Column I | Column II | ||
Element (atomic number) | Isotope | Gas Concentration µCi/ml17 | Liquid and Solid Concentration µCi/ml18 |
Technetium (43) | Tc-96m | 1X10-1 | |
Sr-89 | 1X10-4 | ||
Tc-96 | 1X10-3 | ||
Tellurium (52) | Te-125m | 2X10-3 | |
Te-127m | 6X10-4 | ||
Te-127 | 3X10-3 | ||
Te-129m | 3X10-4 | ||
Te-131m | 6X10-4 | ||
Te-132 | 3X10-4 | ||
Terbium (65) | Tb-160 | 4X10-4 | |
Thallium (81) | Tl-200 | 4X10-3 | |
Tl-201 | 3X10-3 | ||
Tl-202 | 1X10-3 | ||
Tl-204 | 1X10-3 | ||
Thulium (69) | Tm-170 | 5X10-4 | |
Tm-171 | 5X10-3 | ||
Tin (50) | Sn-113 | 9X10-4 | |
Sn-125 | 2X10-4 | ||
Tungsten (Wolfram) (74) | W-181 | 4X10-3 | |
W-187 | 7X10-4 | ||
Vanadium (23) | V-48 | 3X10-4 | |
Xenon (54) | Xe-131m | 4X10-6 | |
Xe-133 | 3X10-6 | ||
Xe-135 | 1X10-6 | ||
Ytterbium (70) | Yb-175 | 1X10-3 | |
Yttrium (39) | Y-90 | 2X10-4 | |
Y-91m | 3X10-2 | ||
Y-91 | 3X10-4 | ||
Y-92 | 6X10-4 | ||
Y-93 | 3X10-4 | ||
Zinc (30) | Zn-65 | 1X10-3 | |
Zn-69m | 7X10-4 | ||
Zn-69 | 2X10-2 | ||
Zirconium (40) | Zr-95 | 6X10-4 | |
Zr-97 | 2X10-4 | ||
Beta and/or gamma emitting radioactive material not listed above with half-life fewer than three years | 1X10-10 | 1X10-6 |
17 Values are given in Column I only for those materials normally used as gases.
18 Ci/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 Part C 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 radioactivity concentration present in the product and the exempt radioactivity 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:
NOTE 3: To convert µCi/ml to SI units of megabecquerels per liter multiply the above values by 37.
C.M.R. 10, 144, ch. 220, pt. C, sch. A