Washington Administrative Code › Title 246 - Health, Department of › RADIATION › Chapter 246-221 - Radiation protection standards › Section 246-221-300 - Appendix B - Minimum quantities of radioactive material requiring labeling

Current through Register Vol. 24-14, July 15, 2024
Minimum Quantities1 of
				  Radioactive
Material Requiring Labeling
Radionuclide
Quantity*(MICROCi)
Actinium-224
1
Actinium-225
0.01
Actinium-226
0.1
Actinium-227
0.001
Actinium-228
1
Aluminum-26
10
Americium-237
1,000
Americium-238
100
Americium-239
1,000
Americium-240
100
Americium-241
0.001
Americium-242
10
Americium-242m
0.001
Americium-243
0.001
Americium-244
10
Americium-244m
100
Americium-245
1,000
Americium-246
1,000
Americium-246m
1,000
Antimony-115
1,000
Antimony-116
1,000
Antimony-116m
1,000
Antimony-117
1,000
Antimony-118m
1,000
Antimony-119
1,000
Antimony-120 (16min)
1,000
Antimony-120 (5.76d)
100
Antimony-122
100
Antimony-124
10
Antimony-124m
1,000
Antimony-125
100
Antimony-126
100
Antimony-126m
1,000
Antimony-127
100
Antimony-128 (9.01h)
100
Antimony-128 (10.4min)
1,000
Antimony-129
100
Antimony-130
1,000
Antimony-131
1,000
Argon-39
1,000
Argon-41
1,000
Arsenic-69
1,000
Arsenic-70
1,000
Arsenic-71
100
Arsenic-72
100
Arsenic-73
100
Arsenic-74
100
Arsenic-76
100
Arsenic-77
100
Arsenic-78
1,000
Astatine-207
100
Astatine-211
10
Barium-126
1,000
Barium-128
100
Barium-131
100
Barium-131m
1,000
Barium-133
100
Barium-133m
100
Barium-135m
100
Barium-139
1,000
Barium-140
100
Barium-141
1,000
Barium-142
1,000
Berkelium-245
100
Berkelium-246
100
Berkelium-247
0.001
Berkelium-249
0.1
Berkelium-250
10
Beryllium-7
1,000
Beryllium-10
1
Bismuth-200
1,000
Bismuth-201
1,000
Bismuth-202
1,000
Bismuth-203
100
Bismuth-205
100
Bismuth-206
100
Bismuth-207
10
Bismuth-210
1
Bismuth-210m
0.1
Bismuth-212
10
Bismuth-213
10
Bismuth-214
100
Bromine-74
1,000
Bromine-74m
1,000
Bromine-75
1,000
Bromine-76
100
Bromine-77
1,000
Bromine-80
1,000
Bromine-80m
1,000
Bromine-82
100
Bromine-83
1,000
Bromine-84
1,000
Cadmium-104
1,000
Cadmium-107
1,000
Cadmium-109
1
Cadmium-113
100
Cadmium-113m
0.1
Cadmium-115
100
Cadmium-115m
10
Cadmium-117
1,000
Cadmium-117m
1,000
Calcium-41
100
Calcium-45
100
Calcium-47
100
Californium-244
100
Californium-246
1
Californium-248
0.01
Californium-249
0.001
Californium-250
0.001
Californium-251
0.001
Californium-252
0.001
Californium-253
0.1
Californium-254
0.001
Carbon-11
1,000
Carbon-14
1,000
Cerium-134
100
Cerium-135
100
Cerium-137
1,000
Cerium-137m
100
Cerium-139
100
Cerium-141
100
Cerium-143
100
Cerium-144
1
Cesium-125
1,000
Cesium-127
1,000
Cesium-129
1,000
Cesium-130
1,000
Cesium-131
1,000
Cesium-132
100
Cesium-134
10
Cesium-134m
1,000
Cesium-135
100
Cesium-135m
1,000
Cesium-136
10
Cesium-137
10
Cesium-138
1,000
Chlorine-36
10
Chlorine-38
1,000
Chlorine-39
1,000
Chromium-48
1,000
Chromium-49
1,000
Chromium-51
1,000
Cobalt-55
100
Cobalt-56
10
Cobalt-57
100
Cobalt-58
100
Cobalt-58m
1,000
Cobalt-60
1
Cobalt-60m
1,000
Cobalt-61
1,000
Cobalt-62m
1,000
Copper-60
1,000
Copper-61
1,000
Copper-64
1,000
Copper-67
1,000
Curium-238
100
Curium-240
0.1
Curium-241
1
Curium-242
0.01
Curium-243
0.001
Curium-244
0.001
Curium-245
0.001
Curium-246
0.001
Curium-247
0.001
Curium-248
0.001
Curium-249
1,000
Dysprosium-155
1,000
Dysprosium-157
1,000
Dysprosium-159
100
Dysprosium-165
1,000
Dysprosium-166
100
Einsteinium-250
100
Einsteinium-251
100
Einsteinium-253
0.1
Einsteinium-254
0.01
Einsteinium-254m
1
Erbium-161
1,000
Erbium-165
1,000
Erbium-169
100
Erbium-171
100
Erbium-172
100
Europium-145
100
Europium-146
100
Europium-147
100
Europium-148
10
Europium-149
100
Europium-150 (12.62h)
100
Europium-150 (34.2y)
1
Europium-152
1
Europium-152m
100
Europium-154
1
Europium-155
10
Europium-156
100
Europium-157
100
Europium-158
1,000
Fermium-252
1
Fermium-253
1
Fermium-254
10
Fermium-255
1
Fermium-257
0.01
Fluorine-18
1,000
Francium-222
100
Francium-223
100
Gadolinium-145
1,000
Gadolinium-146
10
Gadolinium-147
100
Gadolinium-148
0.001
Gadolinium-149
100
Gadolinium-151
10
Gadolinium-152
100
Gadolinium-153
10
Gadolinium-159
100
Gallium-65
1,000
Gallium-66
100
Gallium-67
1,000
Gallium-68
1,000
Gallium-70
1,000
Gallium-72
100
Gallium-73
1,000
Germanium-66
1,000
Germanium-67
1,000
Germanium-68
10
Germanium-69
1,000
Germanium-71
1,000
Germanium-75
1,000
Germanium-77
1,000
Germanium-78
1,000
Gold-193
1,000
Gold-194
100
Gold-195
10
Gold-198
100
Gold-198m
100
Gold-199
100
Gold-200
1,000
Gold-200m
100
Gold-201
1,000
Hafnium-170
100
Hafnium-172
1
Hafnium-173
1,000
Hafnium-175
100
Hafnium-177m
1,000
Hafnium-178m
0.1
Hafnium-179m
10
Hafnium-180m
1,000
Hafnium-181
10
Hafnium-182
0.1
Hafnium-182m
1,000
Hafnium-183
1,000
Hafnium-184
100
Holmium-155
1,000
Holmium-157
1,000
Holmium-159
1,000
Holmium-161
1,000
Holmium-162
1,000
Holmium-162m
1,000
Holmium-164
1,000
Holmium-164m
1,000
Holmium-166
100
Holmium-166m
1
Holmium-167
1,000
Hydrogen-3
1,000
Indium-109
1,000
Indium-110 (4.9h)
1,000
Indium-110m (69.1min)
1,000
Indium-111
100
Indium-112
1,000
Indium-113m
1,000
Indium-114m
10
Indium-115
100
Indium-115m
1,000
Indium-116m
1,000
Indium-117
1,000
Indium-117m
1,000
Indium-119m
1,000
Iodine-120
100
Iodine-120m
1,000
Iodine-121
1,000
Iodine-123
100
Iodine-124
10
Iodine-125
1
Iodine-126
1
Iodine-128
1,000
Iodine-129
1
Iodine-130
10
Iodine-131
1
Iodine-132
100
Iodine-132m
100
Iodine-133
10
Iodine-134
1,000
Iodine-135
100
Iridium-182
1,000
Iridium-184
1,000
Iridium-185
1,000
Iridium-186
100
Iridium-187
1,000
Iridium-188
100
Iridium-189
100
Iridium-190
100
Iridium-190m
1,000
Iridium-192 (73.8d)
1
Iridium-192m (1.4min)
10
Iridium-194
100
Iridium-194m
10
Iridium-195
1,000
Iridium-195m
1,000
Iron-52
100
Iron-55
100
Iron-59
10
Iron-60
1
Krypton-74
1,000
Krypton-76
1,000
Krypton-77
1,000
Krypton-79
1,000
Krypton-81
1,000
Krypton-83m
1,000
Krypton-85
1,000
Krypton-85m
1,000
Krypton-87
1,000
Krypton-88
1,000
Lanthanum-131
1,000
Lanthanum-132
100
Lanthanum-135
1,000
Lanthanum-137
10
Lanthanum-138
100
Lanthanum-140
100
Lanthanum-141
100
Lanthanum-142
1,000
Lanthanum-143
1,000
Lead-195m
1,000
Lead-198
1,000
Lead-199
1,000
Lead-200
100
Lead-201
1,000
Lead-202
10
Lead-202m
1,000
Lead-203
1,000
Lead-205
100
Lead-209
1,000
Lead-210
0.01
Lead-211
100
Lead-212
1
Lead-214
100
Lutetium-169
100
Lutetium-170
100
Lutetium-171
100
Lutetium-172
100
Lutetium-173
10
Lutetium-174
10
Lutetium-174m
10
Lutetium-176
100
Lutetium-176m
1,000
Lutetium-177
100
Lutetium-177m
10
Lutetium-178
1,000
Lutetium-178m
1,000
Lutetium-179
1,000
Magnesium-28
100
Manganese-51
1,000
Manganese-52
100
Manganese-52m
1,000
Manganese-53
1,000
Manganese-54
100
Manganese-56
1,000
Mendelevium-257
10
Mendelevium-258
0.01
Mercury-193
1,000
Mercury-193m
100
Mercury-194
1
Mercury-195
1,000
Mercury-195m
100
Mercury-197
1,000
Mercury-197m
100
Mercury-199m
1,000
Mercury-203
100
Molybdenum-90
100
Molybdenum-93
10
Molybdenum-93m
100
Molybdenum-99
100
Molybdenum-101
1,000
Neodymium-136
1,000
Neodymium-138
100
Neodymium-139
1,000
Neodymium-139m
1,000
Neodymium-141
1,000
Neodymium-147
100
Neodymium-149
1,000
Neodymium-151
1,000
Neptunium-232
100
Neptunium-233
1,000
Neptunium-234
100
Neptunium-235
100
Neptunium-236 (1.15E+5y)
0.001
Neptunium-236 (22.5h)
1
Neptunium-237
0.001
Neptunium-238
10
Neptunium-239
100
Neptunium-240
1,000
Nickel-56
100
Nickel-57
100
Nickel-59
100
Nickel-63
100
Nickel-65
1,000
Nickel-66
10
Niobium-88
1,000
Niobium-89 (122min)
1,000
Niobium-89m (66min)
1,000
Niobium-90
100
Niobium-93m
10
Niobium-94
1
Niobium-95
100
Niobium-95m
100
Niobium-96
100
Niobium-97
1,000
Niobium-98
1,000
Osmium-180
1,000
Osmium-181
1,000
Osmium-182
100
Osmium-185
100
Osmium-189m
1,000
Osmium-191
100
Osmium-191m
1,000
Osmium-193
100
Osmium-194
1
Palladium-100
100
Palladium-101
1,000
Palladium-103
100
Palladium-107
10
Palladium-109
100
Phosphorus-32
10
Phosphorus-33
100
Platinum-186
1,000
Platinum-188
100
Platinum-189
1,000
Platinum-191
100
Platinum-193
1,000
Platinum-193m
100
Platinum-195m
100
Platinum-197
100
Platinum-197m
1,000
Platinum-199
1,000
Platinum-200
100
Plutonium-234
10
Plutonium-235
1,000
Plutonium-236
0.001
Plutonium-237
100
Plutonium-238
0.001
Plutonium-239
0.001
Plutonium-240
0.001
Plutonium-241
0.01
Plutonium-242
0.001
Plutonium-243
1,000
Plutonium-244
0.001
Plutonium-245
100
Polonium-203
1,000
Polonium-205
1,000
Polonium-207
1,000
Polonium-210
0.1
Potassium-40
100
Potassium-42
1,000
Potassium-43
1,000
Potassium-44
1,000
Potassium-45
1,000
Praseodymium-136
1,000
Praseodymium-137
1,000
Praseodymium-138m
1,000
Praseodymium-139
1,000
Praseodymium-142
100
Praseodymium-142m
1,000
Praseodymium-143
100
Praseodymium-144
1,000
Praseodymium-145
100
Praseodymium-147
1,000
Promethium-141
1,000
Promethium-143
100
Promethium-144
10
Promethium-145
10
Promethium-146
1
Promethium-147
10
Promethium-148
10
Promethium-148m
10
Promethium-149
100
Promethium-150
1,000
Promethium-151
100
Protactinium-227
10
Protactinium-228
1
Protactinium-230
0.1
Protactinium-231
0.001
Protactinium-232
1
Protactinium-233
100
Protactinium-234
100
Radium-223
0.1
Radium-224
0.1
Radium-225
0.1
Radium-226
0.1
Radium-227
1,000
Radium-228
0.1
Radon-220
1
Radon-222
1
Rhenium-177
1,000
Rhenium-178
1,000
Rhenium-181
1,000
Rhenium-182 (64.0h)
100
Rhenium-182 (12.7h)
1,000
Rhenium-184
100
Rhenium-184m
10
Rhenium-186
100
Rhenium-186m
10
Rhenium-187
1,000
Rhenium-188
100
Rhenium-188m
1,000
Rhenium-189
100
Rhodium-99
100
Rhodium-99m
1,000
Rhodium-100
100
Rhodium-101
10
Rhodium-101m
1,000
Rhodium-102
10
Rhodium-102m
10
Rhodium-103m
1,000
Rhodium-105
100
Rhodium-106m
1,000
Rhodium-107
1,000
Rubidium-79
1,000
Rubidium-81
1,000
Rubidium-81m
1,000
Rubidium-82m
1,000
Rubidium-83
100
Rubidium-84
100
Rubidium-86
100
Rubidium-87
100
Rubidium-88
1,000
Rubidium-89
1,000
Ruthenium-94
1,000
Ruthenium-97
1,000
Ruthenium-103
100
Ruthenium-105
1,000
Ruthenium-106
1
Samarium-141
1,000
Samarium-141m
1,000
Samarium-142
1,000
Samarium-145
100
Samarium-146
1
Samarium-147
100
Samarium-151
10
Samarium-153
100
Samarium-155
1,000
Samarium-156
1,000
Scandium-43
1,000
Scandium-44
100
Scandium-44m
100
Scandium-46
10
Scandium-47
100
Scandium-48
100
Scandium-49
1,000
Selenium-70
1,000
Selenium-73
100
Selenium-73m
1,000
Selenium-75
100
Selenium-79
100
Selenium-81
1,000
Selenium-81m
1,000
Selenium-83
1,000
Silicon-31
1,000
Silicon-32
1
Silver-102
1,000
Silver-103
1,000
Silver-104
1,000
Silver-104m
1,000
Silver-105
100
Silver-106
1,000
Silver-106m
100
Silver-108m
1
Silver-111
100
Silver-112
100
Silver-115
1,000
Silver-110m
10
Sodium-22
10
Sodium-24
100
Strontium-80
100
Strontium-81
1,000
Strontium-83
100
Strontium-85
100
Strontium-85m
1,000
Strontium-87m
1,000
Strontium-89
10
Strontium-90
0.1
Strontium-91
100
Strontium-92
100
Sulfur-35
100
Tantalum-172
1,000
Tantalum-173
1,000
Tantalum-174
1,000
Tantalum-175
1,000
Tantalum-176
100
Tantalum-177
1,000
Tantalum-178
1,000
Tantalum-179
100
Tantalum-180
100
Tantalum-180m
1,000
Tantalum-182
10
Tantalum-182m
1,000
Tantalum-183
100
Tantalum-184
100
Tantalum-185
1,000
Tantalum-186
1,000
Technetium-93
1,000
Technetium-93m
1,000
Technetium-94
1,000
Technetium-94m
1,000
Technetium-96
100
Technetium-96m
1,000
Technetium-97
1,000
Technetium-97m
100
Technetium-98
10
Technetium-99
100
Technetium-99m
1,000
Technetium-101
1,000
Technetium-104
1,000
Tellurium-116
1,000
Tellurium-121
100
Tellurium-121m
10
Tellurium-123
100
Tellurium-123m
10
Tellurium-125m
10
Tellurium-127
1,000
Tellurium-127m
10
Tellurium-129
1,000
Tellurium-129m
10
Tellurium-131
100
Tellurium-131m
10
Tellurium-132
10
Tellurium-133
1,000
Tellurium-133m
100
Tellurium-134
1,000
Terbium-147
1,000
Terbium-149
100
Terbium-150
1,000
Terbium-151
100
Terbium-153
1,000
Terbium-154
100
Terbium-155
1,000
Terbium-156
100
Terbium-156m (24.4h)
1,000
Terbium-156m (5.0h)
1,000
Terbium-157
10
Terbium-158
1
Terbium-160
10
Terbium-161
100
Thallium-194
1,000
Thallium-194m
1,000
Thallium-195
1,000
Thallium-197
1,000
Thallium-198
1,000
Thallium-198m
1,000
Thallium-199
1,000
Thallium-200
1,000
Thallium-201
1,000
Thallium-202
100
Thallium-204
100
Thorium-226
10
Thorium-227
0.01
Thorium-228
0.001
Thorium-229
0.001
Thorium-230
0.001
Thorium-231
100
Thorium-232
100
Thorium-234
10
Thorium-natural
100
Thulium-162
1,000
Thulium-166
100
Thulium-167
100
Thulium-170
10
Thulium-171
10
Thulium-172
100
Thulium-173
100
Thulium-175
1,000
Tin-110
100
Tin-111
1,000
Tin-113
100
Tin-117m
100
Tin-119m
100
Tin-121
1,000
Tin-121m
100
Tin-123
10
Tin-123m
1,000
Tin-125
10
Tin-126
10
Tin-127
1,000
Tin-128
1,000
Titanium-44
1
Titanium-45
1,000
Tungsten-176
1,000
Tungsten-177
1,000
Tungsten-178
1,000
Tungsten-179
1,000
Tungsten-181
1,000
Tungsten-185
100
Tungsten-187
100
Tungsten-188
10
Uranium-230
0.01
Uranium-231
100
Uranium-232
0.001
Uranium-233
0.001
Uranium-234
0.001
Uranium-235
0.001
Uranium-236
0.001
Uranium-237
100
Uranium-238
100
Uranium-239
1,000
Uranium-240
100
Uranium-natural
100
Vanadium-47
1,000
Vanadium-48
100
Vanadium-49
1,000
Xenon-120
1,000
Xenon-121
1,000
Xenon-122
1,000
Xenon-123
1,000
Xenon-125
1,000
Xenon-127
1,000
Xenon-129m
1,000
Xenon-131m
1,000
Xenon-133
1,000
Xenon-133m
1,000
Xenon-135
1,000
Xenon-135m
1,000
Xenon-138
1,000
Ytterbium-162
1,000
Ytterbium-166
100
Ytterbium-167
1,000
Ytterbium-169
100
Ytterbium-175
100
Ytterbium-177
1,000
Ytterbium-178
1,000
Yttrium-86
100
Yttrium-86m
1,000
Yttrium-87
100
Yttrium-88
10
Yttrium-90
10
Yttrium-90m
1,000
Yttrium-91
10
Yttrium-91m
1,000
Yttrium-92
100
Yttrium-93
100
Yttrium-94
1,000
Yttrium-95
1,000
Zinc-62
100
Zinc-63
1,000
Zinc-65
10
Zinc-69
1,000
Zinc-69m
100
Zinc-71m
1,000
Zinc-72
100
Zirconium-86
100
Zirconium-88
10
Zirconium-89
100
Zirconium-93
1
Zirconium-95
10
Zirconium-97
100
Any alpha-emitting
radionuclide not listed above or mixtures of
								alpha-emitters of unknown composition
0.001
Any radionuclide other
than alpha-emitting
radionuclides not listed
above, or mixtures of
beta emitters of unknown
composition
0.01
Note:
For purposes of WAC
								246-221-120(8),
								246-221-130(7)(a),
								and 246-221-240(1) where there is involved a combination of radionuclides in known amounts, the
								limit for the combination shall be derived as follows: Determine, for each
								radionuclide in the combination, the ratio between the quantity present in the
								combination and the limit otherwise established for the specific radionuclide
								when not in combination. The sum of such ratios for all radionuclides in the
								combination may not exceed "1" -- that is, unity.
1
The quantities listed above were derived by taking
								1/10th of the most restrictive ALI listed in Table I, Columns 1 and 2, of WAC
								246-221-290, rounding to the
								nearest factor of 10, and constraining the values listed between 37 Bq and 37
								MBq (0.001 and 1,000MICROCi). Values of 3.7 MBq (100 MICROCi) have been
								assigned for radionuclides having a radioactive half-life in excess of E+9
								years, except rhenium, 37 MBq (1,000 MICROCi), to take into account their low
								specific activity.
*
To convert MICROCi to kBq, multiply the MICROCi
								value by 37.
Statutory Authority:
					 RCW
					 70.98.050. 94-01-073, § 246-221-300,
					 filed 12/9/93, effective 1/9/94. Statutory Authority:
					 RCW
					    70.98.050 and
					 70.98.080. 91-15-112 (Order 184),
					 § 246-221-300, filed 7/24/91, effective 8/24/91. Statutory Authority: RCW
					 43.70 040. 91-02-049 (Order 121), recodified as § 246-221-300, filed
					 12/27/90, effective 1/31/91. Statutory Authority:
					 RCW
					    70.98.080. 83-19-050 (Order 2026), §
					 402-24-230, filed 9/16/83. Statutory Authority:
					 RCW
					 70.98.050. 81-01-011 (Order 1570), §
					 402-24-230, filed 12/8/80; Order 1095, § 402-24-230, filed 2/6/76; Order
					 708, § 402-24-230, filed 8/24/72; Order 1, § 402-24-230, filed
					 7/2/71; Order 1, § 402-24-230, filed 1/8/69; Rules (part), filed
					 10/26/66.