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Title 10 - Energy last revised: May 16, 2024
All TitlesTitle 10Chapter IPart 30 - PART 30—RULES OF GENERAL APPLICABILITY TO DOMESTIC LICENSING OF BYPRODUCT MATERIAL
View all text of Part 30 [§ 30.1 - § 30.72]
§ 30.70 - Schedule A—Exempt concentrations.

[See footnotes at end of this table]

Element (atomic number) Isotope Col. I Col. II
Gas concentration µCi/ml 1 Liquid and solid concentration µCi/ml 2
Antimony (51)Sb 1223 × 10−4
Sb 1242 × 10−4
Sb 1251 × 10−3
Argon (18)A 371 × 10−3
A 414 × 10−7
Arsenic (33)As 735 × 10−3
As 745 × 10−4
As 762 × 10−4
As 778 × 10−4
Barium (56)Ba 1312 × 10−3
Ba 1403 × 10−4
Beryllium (4)Be 72 × 10−2
Bismuth (83)Bi 2064 × 10−4
Bromine (35)Br 824 × 10−73 × 10−3
Cadmium (48)Cd 1092 × 10−3
Cd 115m3 × 10−4
Cd 1153 × 10−4
Calcium (20)Ca 459 × 10−5
Ca 475 × 10−4
Carbon (6)C 141 × 10−68 × 10−3
Cerium (58)Ce 1419 × 10−4
Ce 1434 × 10−4
Ce 1441 × 10−4
Cesium (55)Cs 1312 × 10−2
Cs 134m6 × 10−2
Cs 1349 × 10−5
Chlorine (17)Cl 389 × 10−74 × 10−3
Chromium (24)Cr 512 × 10−2
Cobalt (27)Co 575 × 10−3
Co 581 × 10−3
Co 605 × 10−4
Copper (29)Cu 643 × 10−3
Dysprosium (66)Dy 1654 × 10−3
Dy 1664 × 10−4
Erbium (68)Er 1699 × 10−4
Er 1711 × 10−3
Europium (63)Eu 1526 × 10−4
(T/2 = 9.2 Hrs)
Eu 1552 × 10−3
Fluorine (9)F 182 × 10−68 × 10−3
Gadolinium (64)Gd 1532 × 10−3
Gd 1598 × 10−4
Gallium (31)Ga 724 × 10−4
Germanium (32)Ge 712 × 10−2
Gold (79)Au 1962 × 10−3
Au 1985 × 10−4
Au 1992 × 10−3
Hafnium (72)Hf 1817 × 10−4
Hydrogen (1)H 35 × 10−63 × 10−2
Indium (49)In 113m1 × 10−2
In 114m2 × 10−4
Iodine (53)I 1263 × 10−92 × 10−5
I 1313 × 10−92 × 10−5
I 1328 × 10−86 × 10−4
I 1331 × 10−87 × 10−5
I 1342 × 10−71 × 10−3
Iridium (77)Ir 1902 × 10−3
Ir 1924 × 10−4
Ir 1943 × 10−4
Iron (26)Fe 558 × 10−3
Fe 596 × 10−4
Krypton (36)Kr 85m1 × 10−6
Kr 853 × 10−6
Lanthanum (57)La 1402 × 10−4
Lead (82)Pb 2034 × 10−3
Lutetium (71)Lu 1771 × 10−3
Manganese (25)Mn 523 × 10−4
Mn 541 × 10−3
Mn 561 × 10−3
Mercury (80)Hg 197m2 × 10−3
Hg 1973 × 10−3
Hg 2032 × 10−4
Molybdenum (42)Mo 992 × 10−3
Neodymium (60)Nd 1476 × 10−4
Nd 1493 × 10−3
Nickel (28)Ni 651 × 10−3
Niobium (Columbium) (41)Nb 951 × 10−3
Nb 979 × 10−3
Osmium (76)Os 1857 × 10−4
Os 191m3 × 10−2
Os 1912 × 10−3
Os 1936 × 10−4
Palladium (46)Pd 1033 × 10−3
Pd 1099 × 10−4
Phosphorus (15)P 322 × 10−4
Platinum (78)Pt 1911 × 10−3
Pt 193m1 × 10−2
Pt 197m1 × 10−2
Pt 1971 × 10−3
Potassium (19)K 423 × 10−3
Praseodymium (59)Pr 1423 × 10−4
Pr 1435 × 10−4
Promethium (61)Pm 1472 × 10−3
Pm 1494 × 10−4
Rhenium (75)Re 1836 × 10−3
Re 1869 × 10−4
Re 1886 × 10−4
Rhodium (45)Rh 103m1 × 10−1
Rh 1051 × 10−3
Rubidium (37)Rb 867 × 10−4
Ruthenium (44)Ru 974 × 10−4
Ru 1038 × 10−4
Ru 1051 × 10−3
Ru 1061 × 10−4
Samarium (62)Sm 1538 × 10−4
Scandium (21)Sc 464 × 10−4
Sc 479 × 10−4
Sc 483 × 10−4
Selenium (34)Se 753 × 10−3
Silicon (14)Si 319 × 10−3
Silver (47)Ag 1051 × 10−3
Ag 110m3 × 10−4
Ag 1114 × 10−4
Sodium (11)Na 242 × 10−3
Strontium (38)Sr 851 × 10−4
Sr 891 × 10−4
Sr 917 × 10−4
Sr 927 × 10−4
Sulfur (16)S 359 × 10−86 × 10−4
Tantalum (73)Ta 1824 × 10−4
Technetium (43)Tc 96m1 × 10−1
Tc 961 × 10−3
Tellurium (52)Te 125m2 × 10−3
Te 127m6 × 10−4
Te 1273 × 10−3
Te 129m3 × 10−4
Te 131m6 × 10−4
Te 1323 × 10−4
Terbium (65)Tb 1604 × 10−4
Thallium (81)Tl 2004 × 10−3
Tl 2013 × 10−3
Tl 2021 × 10−3
Tl 2041 × 10−3
Thulium (69)Tm 1705 × 10−4
Tm 1715 × 10−3
Tin (50)Sn 1139 × 10−4
Sn 1252 × 10−4
Tungsten (Wolfram) (74)W 1814 × 10−3
W 1877 × 10−4
Vanadium (23)V 483 × 10−4
Xenon (54)Xe 131m4 × 10−6
Xe 1333 × 10−6
Xe 1351 × 10−6
Ytterbium (70)Yb 1751 × 10−3
Yttrium (39)Y 902 × 10−4
Y 91m3 × 10−2
Y 913 × 10−4
Y 926 × 10−4
Y 933 × 10−4
Zinc (30)Zn 651 × 10−3
Zn 69m7 × 10−4
Zn 692 × 10−2
Zirconium (40)Zr 956 × 10−4
Zr 972 × 10−4
Beta and/or gamma emitting byproduct material not listed above with half-life less than 3 years1 × 10−101 × 10−6

Footnotes to Schedule A:

1 Values are given only for those materials normally used as gases.

2 µCi/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 § 30.14 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 A for the specific isotope when not in combination. The sum of such ratios may not exceed “1” (i.e., unity).

Example:

[30 FR 8185, June 26, 1965, as amended at 35 FR 3982, Mar. 3, 1970; 38 FR 29314, Oct. 24, 1973; 59 FR 5520, Feb. 7, 1994]
authority: Atomic Energy Act of 1954, secs. 11, 81, 161, 181, 182, 183, 184, 186, 187, 223, 234, 274 (42 U.S.C. 2014,2111,2201,2231,2232,2233,2234,2236,2237,2273,2282,2021; Energy Reorganization Act of 1974, secs. 201, 202, 206, 211 (42 U.S.C. 5841,5842,5846,5851; 44 U.S.C. 3504 note
cite as: 10 CFR 30.70
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