15A NCAC 11 .0303 EXEMPT CONCENTRATIONS: OTHER THAN SOURCE MATERIAL

(a) No person shall introduce radioactive material into a product or material knowing or having reason to believe that it will be transferred to persons exempt under Paragraph (b) of this Rule or equivalent regulations of the U.S. Nuclear Regulatory Commission or any agreement state, except in accordance with a specific license issued pursuant to Rule .0325 of this Section.

(b) Except as provided in Paragraph (a) of this Rule, any person is exempt from these Rules to the extent that such person receives, possesses, uses, transfers, owns, or acquires products or materials containing radioactive material in concentrations not in excess of those listed in the following table:

EXEMPT CONCENTRATIONS

Column II

Column I Liquid and

Gas solid

Element concentration concentration

(atomic number) Isotope microcurie/ml microcurie/ml

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

Europium (63) Eu 152 6X10^‑4

(T1/2 =9.2 Hrs.)

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^‑3

Nd 149 3X10^‑4

Nickel (28) Ni 65 1X10^‑3

Niobium(Columbium)(41) Nb 95 1X10^‑3

Nb 97 9X10^‑3

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

Polonium (84) Po 210 7X10^‑6

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

Radium (88) Ra 226 1X10^‑7

Ra 228 3X10^‑7

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 89 1X10^‑4

Sr 91 7X10^‑4

Sr 92 7X10^‑4

Sulfur (16) S 35 9X10^‑8 6X10^‑4

Tantalum (73) Ta 182 4X10^‑4

Technetium (43) Tc 96m 1X10^‑1

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) W 181 4X10^‑3

(74) 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 1X10^‑10 1X10^‑6

radioactive material not

listed above with half-life

less than 3 years

(c) In Column I of the table, in Paragraph (b) of this Rule, values are given only for those materials normally used as gases.

(d) In Column II of the table, in Paragraph (b) of this Rule, the units, microcuries per gram, are used for solids.

(e) Many radioisotopes disintegrate into isotopes which are also radioactive. In expressing the concentrations in Paragraph (b) of this Rule, the activity stated is that of the parent isotope and takes into account the daughters.

(f) For purposes of this Rule, where a combination of isotopes is involved, the limit for the combination shall 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 Paragraph (b) of this Rule for the specific isotope when not in combination. The sum of the ratios shall not exceed unity. An example of this is:

Concentration of Isotope A in Product

Exempt concentration of Isotope A +

Concentration of Isotope B in Product

Exempt concentration of Isotope B less than or equal to 1

History Note: Authority G.S. 104E‑7; 104E‑10; 104E‑20;

Eff. February 1, 1980;

Amended Eff. May 1, 1993; June 1, 1989.