Virginia Administrative Code › Title 12 - HEALTH › Agency 5 - DEPARTMENT OF HEALTH › Chapter 481 - VIRGINIA RADIATION PROTECTION REGULATIONS › Part XVII - Schedules › Section 12VAC5-481-3720 - Exempt concentrations schedule

Current through Register Vol. 40, No. 24, July 15, 2024
Element (atomic number)
Isotope
Col. I
Col. II
Gas Concentration
							 [MICRO]Ci/ml1
Liquid and Solid Concentration
							 [MICRO]Ci/ml2
Antimony (51)
Sb-122
3 x 10-4
Sb-124
2 x 10-4
Sb-125
1 x 10-3
Argon (18)
A-37
1 x 10-3
A-41
4 x 10-7
Arsenic (33)
As-73
5 x 10-3
As-74
5 x 10-4
As-76
2 x 10-4
As-77
8 x 10-4
Barium (56)
Ba-131
2 x 10-3
Ba-140
3 x 10-4
Beryllium (4)
Be-7
2 x 10-2
Bismuth (83)
Bi-206
4 x 10-4
Bromine (35)
Br-82
4 x 10-7
3 x 10-3
Cadmium (48)
Cd-109
2 x 10-3
Cd-115M
3 x 10-4
Cd-115
3 x 10-4
Calcium (20)
Ca-45
9 x 10-5
Ca-47
5 x 10-4
Carbon (6)
C-14
1 x 10-6
8 x 10-3
Cerium (58)
Ce-141
9 x 10-4
Ce-143
4 x 10-4
Ce-144
1 x 10-4
Cesium (55)
Cs-131
2 x 10-2
Cs-134m
6 x 10-2
Cs-134
9 x 10-5
Chlorine (17)
Cl-38
9 x 10-7
4 x 10-3
Chromium (24)
Cr-51
2 x 10-2
Cobalt (27)
Co-57
5 x 10-3
Co-58
1 x 10-3
Co-60
5 x 10-4
Copper (29)
Cu-64
3 x 10-3
Dysprosium (66)
Dy-165
4 x 10-3
Dy-166
4 x 10-4
Erbium (68)
Er-169
9 x 10-4
Er-171
1 x 10-3
Europium (63)
Eu-152 (9.2 hrs)
6 x 10-4
Eu-155
2 x 10-3
Fluorine (9)
F-18
2 x 10-6
8 x 10-3
Gadolinium (64)
Gd-153
2 x 10-3
Gd-159
8 x `0-4
Gallium (31)
Ga-72
4 x 10-4
Germanium (32)
Ge-71
2 x 10-2
Gold (79)
Au-196
2 x 10-3
Au-198
5 x 10-4
Au-199
2 x 10-3
Hafnium (72)
Hf-81
7 x 10-4
Hydrogen (1)
H-3
5 x 10-6
3 x 10-2
Indium (49)
In-113M
1 x 10-2
In-114M
2 x 10-4
Iodine (53)
I-126
3 x 10-9
2 x 10-5
I-131
3 x 10-9
2 x 10-5
I-132
8 x 10-8
6 x 10-4
I-133
1 x 10-8
7 x 10-5
I-134
2 x 10-7
1 x 10-3
Iridium (77)
Ir-190
2 x 10-3
Ir-192
4 x 10-4
Ir-194
3 x 10-4
Iron (26)
Fe-55
8 x 10-3
Fe-59
6 x 10-4
Krypton (36)
Kr-85M
1 x 10-6
Kr-85
3 x 10-6
Lanthanum (57)
La-140
2 x 10-4
Lead (82)
Pb-203
4 x 10-3
Lutetium (71)
Lu-177
1 x 10-3
Manganese (25)
Mn-52
3 x 10-4
Mn-54
1 x 10-3
Mn-56
1 x 10-3
Mercury (80)
Hg-197M
2 x 10-3
Hg-197
3 x 10-3
Hg-203
2 x 10-4
Molybdenum (42)
Mo-99
2 x 10-3
Neodymium (60)
Nd-147
6 x 10-4
Nd-149
3 x 10-3
Nickel (28)
Ni-65
1 x 10-3
Niobium (Columbium) (41)
Nb-95
1 x 10-3
Nb-97
9 x 10-3
Osmium (76)
Os-185
7 x 10-4
Os-191M
3 x 10-2
Os-191
2 x 10-3
Os-193
6 x 10-4
Palladium (46)
Pd-103
3 x 10-3
Pd-109
9 x 10-4
Phosphorus (15)
P-32
2 x 10-4
Platinum (78)
Pt-191
1 x 10-3
Pt-193M
1 x 10-2
Pt-197M
1 x 10-2
Pt-197
1 x 10-3
Potassium (19)
K-42
3 x 10-3
Praseodymium (59)
Pr-142
3 x 10-4
Pr-143
5 x 10-4
Promethium (61)
Pm-147
2 x 10-3
Pm-149
4 x 10-4
Rhenium (75)
Re-183
6 x 10-3
Re-186
9 x 10-4
Re-188
6 x 10-4
Rhodium (45)
Rh-103M
1 x 10-1
Rh-105
1 x 10-3
Rubidium (37)
Rb-86
7 x 10-4
Ruthenium (44)
Ru-97
4 x 10-4
Ru-103
8 x 10-4
Ru-105
1 x 10-3
Ru-106
1 x 10-4
Samarium (62)
Sm-153
8 x 10-4
Scandium (21)
Sc-46
4 x 10-4
Sc-47
9 x 10-4
Sc-48
3 x 10-4
Selenium (34)
Se-75
3 x 10-3
Silicon (14)
Si-31
9 x 10-3
Silver (47)
Ag-105
1 x 10-3
Ag-110M
3 x 10-4
Ag-111
4 x 10-4
Sodium (11)
Na-24
2 x 10-3
Strontium (38)
Sr-85
1 x 10-4
Sr-89
1 x 10-4
Sr-91
7 x 10-4
Sr-92
7 x 10-4
Sulfur (16)
S-35
9 x 10-8
6 x 10-4
Tantalum (73)
Ta-182
4 x 10-4
Technetium (43)
Tc-96M Tc-96
1 x 10-1 1 x
							 10-3
Tellurium (52)
Te-125M
2 x 10-3
Te-125M
6 x 10-4
Te-127
3 x 10-3
Te-129M
3 x 10-4
Te-131M
6 x 10-4
Te-132
3 x 10-4
Terbium (65)
Tb-160
4 x 10-4
Thallium (81)
Tl-200 Tl-201 Tl-202 Tl-204
4 x 10-3 3 x
							 10-3 1 x 10-3 1 x
							 10-3
Thulium (69)
Tm-170 Tm-171
5 x 10-4 5 x
							 10-3
Tin (50)
Sn-113 Sn-125
9 x 10-4 2 x
							 10-4
Tungsten (Wolfram) (74)
W-181 W-187
4 x 10-3 7 x
							 10-4
Vanadium (23)
V-48
3 x 10-4
Xenon (54)
Xe-131M
4 x 10-6
Xe-133
3 x 10-6
Xe-135
1 x 10-6
Ytterbium (70)
Yb-175
1 x 10-3
Yttrium (39)
Y-90
2 x 10-4
Y-91M
3 x 10-2
Y-91
3 x 10-4
Y-92
6 x 10-4
Y-93
3 x 10-4
Zinc (30)
Zn-65
1 x 10-3
Zn-69M
7 x 10-4
Zn-69
2 x 10-2
Zirconium (40)
Zr-95
6 x 10-4
Zr-97
2 x 10-4
Beta and/or gamma emitting radioactive material not
							 listed above with half-life less than three years
1 x 10-10
1 x 10-6
Footnotes:
1Values are given only for those
					 materials normally used as gases.
2[MICRO]Ci/gm for solids.
NOTE 1: Many radioisotopes disintegrate into isotopes that
					 are also radioactive. In expressing the concentrations, the activity stated is
					 that of the parent isotope and takes into account the daughters.
NOTE 2: For purposes of 12VAC5-481-400 A 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 for the
					 specific isotope when not in combination. The sum of such ratios may not exceed
					 "1" (i.e., unity).
Example:
View
					 Image
Statutory Authority
§ 32.1-229 of the Code of
						Virginia.