SCHEDULE 2Specified Quantities of Radionuclides on Premises

Regulation 3(1) and (2)

Part ITable of Radionuclides

Radionuclide name, symbol

Radionuclide form

Quantity (Bq)

Actinium

Ac-224

2 1011

Ac-225

3 109

Ac-226

2 1010

Ac-227

4 107

Ac-228

5 1011

Aluminium

Al-26

7 1010

Americium

Am-237

4 1012

Am-238

6 1012

Am-239

2 1012

Am-240

4 1012

Am-241

3 108

Am-242

1 1012

Am-242m

3 108

Am-243

3 108

Am-244

2 1012

Am-244m

2 1014

Am-245

2 1012

Am-246

1 1012

Am-246m

2 1012

Antimony

Sb-115

2 1012

Sb-116

2 1012

Sb-116m

2 1012

Sb-117

1 1013

Sb-118m

7 1012

Sb-119

1 1013

Sb-120

(long lived isotope)

3 1012

Sb-120

(short lived isotope)

2 1012

Sb-122

2 1012

Sb-124

4 1011

Sb-124m

4 1012

Sb-125

4 1011

Sb-126

1 1012

Sb-126m

2 1012

Sb-127

2 1012

Sb-128

(long lived isotope)

2 1012

Sb-128

(short lived isotope)

1 1012

Sb-129

2 1012

Sb-130

1 1012

Sb-131

2 1012

Argon

Ar-37

(gas)

4 1017

Ar-39

(gas)

2 1016

Ar-41

(gas)

4 1013

Arsenic

As-69

7 1011

As-70

1 1012

As-71

3 1012

As-72

9 1011

As-73

8 1012

As-74

2 1012

As-76

9 1011

As-77

2 1012

As-78

7 1011

Astatine

At-207

4 1012

At-211

2 1011

Barium

Ba-126

2 1013

Ba-128

1 1013

Ba-131

6 1012

Ba-131m

3 1012

Ba-133

4 1011

Ba-133m

2 1012

Ba-135m

2 1012

Ba-139

1 1012

Ba-140

2 1012

Ba-141

1 1012

Ba-142

2 1012

Berkelium

Bk-245

3 1012

Bk-246

6 1012

Bk-247

3 108

Bk-249

2 1011

Bk-250

2 1012

Beryllium

Be-7

2 1013

Be-10

6 1011

Bismuth

Bi-200

2 1012

Bi-201

2 1012

Bi-202

3 1012

Bi-203

4 1012

Bi-205

2 1012

Bi-206

2 1012

Bi-207

1 1011

Bi-210

2 1011

Bi-210m

6 109

Bi-212

7 1011

Bi-213

7 1011

Bi-214

1 1012

Bromine

Br-74

8 1011

Br-74m

6 1011

Br-75

2 1012

Br-76

1 1012

Br-77

4 1013

Br-80

1 1012

Br-80m

5 1012

Br-82

3 1012

Br-83

2 1012

Br-84

7 1011

Cadmium

Cd-104

1 1013

Cd-107

4 1012

Cd-109

2 1012

Cd-113

2 1011

Cd-113m

1 1011

Cd-115

2 1012

Cd-115m

2 1012

Cd-117

2 1012

Cd-117m

2 1012

Caesium

Cs-125

2 1012

Cs-127

1 1013

Cs-129

2 1013

Cs-130

2 1012

Cs-131

6 1013

Cs-132

9 1012

Cs-134

7 1010

Cs-134m

4 1012

Cs-135

9 1011

Cs-135m

8 1012

Cs-136

8 1011

Cs-137

1 1011

Cs-138

8 1011

Calcium

Ca-41

3 1013

Ca-45

3 1012

Ca-47

2 1012

Californium

Cf-244

2 1012

Cf-246

5 1010

Cf-248

2 109

Cf-249

3 108

Cf-250

7 108

Cf-251

3 108

Cf-252

1 109

Cf-253

2 1010

Cf-254

4 108

Carbon

C-11

2 1012

C-11

(vapour)

1 1014

C-11

(dioxide gas)

1 1014

C-11

(monoxide gas)

1 1014

C-14

3 1012

C-14

(vapour)

4 1013

C-14

(dioxide gas)

3 1015

C-14

(monoxide gas)

1 1016

Cerium

Ce-134

1 1013

Ce-135

2 1012

Ce-137

2 1013

Ce-137m

2 1012

Ce-139

2 1012

Ce-141

2 1012

Ce-143

2 1012

Ce-144

3 1011

Chlorine

Cl-36

2 1012

Cl-38

6 1011

Cl-39

1 1012

Chromium

Cr-48

4 1013

Cr-49

2 1012

Cr-51

3 1013

Cobalt

Co-55

2 1012

Co-56

2 1011

Co-57

1 1012

Co-58

6 1011

Co-58m

2 1013

Co-60

6 1010

Co-60m

7 1012

Co-61

2 1012

Co-62m

9 1011

Copper

Cu-60

1 1012

Cu-61

2 1012

Cu-64

4 1012

Cu-67

3 1012

Curium

Cm-238

5 1012

Cm-240

7 109

Cm-241

5 1011

Cm-242

4 109

Cm-243

4 108

Cm-244

4 108

Cm-245

2 108

Cm-246

2 108

Cm-247

3 108

Cm-248

7 107

Cm-249

2 1012

Cm-250

1 107

Dysprosium

Dy-155

1 1013

Dy-157

1 1014

Dy-159

8 1012

Dy-165

2 1012

Dy-166

3 1012

Einsteinium

Es-250

1 1013

Es-251

6 1012

Es-253

8 109

Es-254

2 109

Es-254m

5 1010

Erbium

Er-161

6 1012

Er-165

2 1014

Er-169

3 1012

Er-171

2 1012

Er-172

3 1012

Europium

Eu-145

4 1012

Eu-146

3 1012

Eu-147

4 1012

Eu-148

4 1011

Eu-149

8 1012

Eu-150

(long lived isotope)

1 1011

Eu-150

(short lived isotope)

2 1012

Eu-152

1 1011

Eu-152m

2 1012

Eu-154

1 1011

Eu-155

2 1012

Eu-156

2 1012

Eu-157

2 1012

Eu-158

1 1012

Fermium

Fm-252

7 1010

Fm-253

6 1010

Fm-254

3 1011

Fm-255

9 1010

Fm-257

3 109

Fluorine

F-18

2 1012

Francium

Fr-222

1 1012

Fr-223

2 1012

Gadolinium

Gd-145

2 1012

Gd-146

2 1012

Gd-147

5 1012

Gd-148

9 108

Gd-149

6 1012

Gd-151

5 1012

Gd-152

1 109

Gd-153

2 1012

Gd-159

2 1012

Gallium

Ga-65

1 1012

Ga-66

9 1011

Ga-67

5 1012

Ga-68

2 1012

Ga-70

1 1012

Ga-72

2 1012

Ga-73

2 1012

Germanium

Ge-66

3 1012

Ge-67

7 1011

Ge-68

1 1012

Ge-69

2 1012

Ge-71

7 1014

Ge-75

2 1012

Ge-77

1 1012

Ge-78

2 1012

Gold

Au-193

7 1012

Au-194

1 1013

Au-195

3 1012

Au-198

2 1012

Au-198m

2 1012

Au-199

3 1012

Au-200

1 1012

Au-200m

2 1012

Au-201

2 1012

Hafnium

Hf-170

4 1012

Hf-172

5 1011

Hf-173

6 1012

Hf-175

2 1012

Hf-177m

2 1012

Hf-178m

4 1010

Hf-179m

2 1012

Hf-180m

2 1012

Hf-181

1 1012

Hf-182

7 1010

Hf-182m

2 1012

Hf-183

2 1012

Hf-184

2 1012

Holmium

Ho-155

2 1012

Ho-157

4 1012

Ho-159

6 1012

Ho-161

1 1013

Ho-162

5 1012

Ho-162m

4 1012

Ho-164

2 1012

Ho-164m

4 1012

Ho-166

1 1012

Ho-166m

8 1010

Ho-167

2 1012

Hydrogen

H-3

(tritiated water)

7 1013

H-3

(organically bound tritium)

1 1014

H-3

(tritiated water vapour)

1 1015

H-3

(gas)

1 1018

H-3

(tritiated methane gas)

1 1017

H-3

(organically bound tritium gas/vapour)

6 1014

Indium

In-109

7 1012

In-110

(long lived isotope)

2 1013

In-110

(short lived isotope)

1 1012

In-111

9 1012

In-112

2 1012

In-113m

5 1012

In-114

1 1012

In-114m

9 1011

In-115

6 1010

In-115m

3 1012

In-116m

2 1012

In-117

2 1012

In-117m

2 1012

In-119m

9 1011

Iodine

I-120

6 1011

I-120

(elemental vapour)

2 1013

I-120

(methyl iodide vapour)

2 1013

I-120m

7 1011

I-120m

(elemental vapour)

2 1013

I-120m

(methyl iodide vapour)

2 1013

I-121

4 1012

I-121

(elemental vapour)

1 1014

I-121

(methyl iodide vapour)

1 1014

I-123

9 1012

I-123

(elemental vapour)

5 1013

I-123

(methyl iodide vapour)

6 1013

I-124

2 1012

I-124

(elemental vapour)

9 1011

I-124

(methyl iodide vapour)

1 1012

I-125

1 1011

I-125

(elemental vapour)

1 1012

I-125

(methyl iodide vapour)

1 1012

I-126

8 1011

I-126

(elemental vapour)

5 1011

I-126

(methyl iodide vapour)

6 1011

I-128

1 1012

I-128

(elemental vapour)

2 1014

I-128

(methyl iodide vapour)

5 1014

I-129

1 1010

I-129

(elemental vapour)

2 1011

I-129

(methyl iodide vapour)

2 1011

I-130

3 1012

I-130

(elemental vapour)

5 1012

I-130

(methyl iodide vapour)

6 1012

I-131

9 1010

I-131

(elemental vapour)

6 1011

I-131

(methyl iodide vapour)

7 1011

I-132

2 1012

I-132

(elemental vapour)

2 1013

I-132

(methyl iodide vapour)

3 1013

I-132m

2 1012

I-132m

(elemental vapour)

4 1013

I-132m

(methyl iodide vapour)

5 1013

I-133

2 1012

I-133

(elemental vapour)

2 1012

I-133

(methyl iodide vapour)

3 1012

I-134

2 1012

I-134

(elemental vapour)

3 1013

I-134

(methyl iodide vapour)

4 1013

I-135

2 1012

I-135

(elemental vapour)

9 1012

I-135

(methyl iodide vapour)

1 1013

Iridium

Ir-182

1 1012

Ir-184

2 1012

Ir-185

3 1012

Ir-186

(long lived isotope)

3 1012

Ir-186

(short lived isotope)

2 1012

Ir-187

6 1012

Ir-188

5 1012

Ir-189

9 1012

Ir-190

2 1012

Ir-190m

(long lived isotope)

3 1012

Ir-190m

(short lived isotope)

1 1013

Ir-192

6 1011

Ir-192m

4 1011

Ir-193m

4 1012

Ir-194

1 1012

Ir-194m

1 1011

Ir-195

2 1012

Ir-195m

2 1012

Iron

Fe-52

2 1012

Fe-55

8 1012

Fe-59

8 1011

Fe-60

4 1010

Krypton

Kr-74

(gas)

5 1013

Kr-76

(gas)

1 1014

Kr-77

(gas)

6 1013

Kr-79

(gas)

2 1014

Kr-81

(gas)

7 1015

Kr-81m

(gas)

5 1014

Kr-83m

(gas)

3 1016

Kr-85

(gas)

1 1016

Kr-85m

(gas)

4 1014

Kr-87

(gas)

7 1013

Kr-88

(gas)

3 1013

Lanthanum

La-131

2 1012

La-132

2 1012

La-135

2 1014

La-137

2 1012

La-138

2 1011

La-140

2 1012

La-141

1 1012

La-142

1 1012

La-143

7 1011

Lead

Pb-195m

2 1012

Pb-198

4 1012

Pb-199

6 1012

Pb-200

3 1012

Pb-201

8 1012

Pb-202

6 1011

Pb-202m

4 1012

Pb-203

9 1012

Pb-205

1 1013

Pb-209

2 1012

Pb-210

3 109

Pb-211

2 1012

Pb-212

1 1011

Pb-214

1 1012

Lutetium

Lu-169

6 1012

Lu-170

3 1012

Lu-171

4 1012

Lu-172

3 1012

Lu-173

2 1012

Lu-174

1 1012

Lu-174m

3 1012

Lu-176

3 1011

Lu-176m

2 1012

Lu-177

3 1012

Lu-177m

3 1011

Lu-178

1 1012

Lu-178m

1 1012

Lu-179

2 1012

Magnesium

Mg-28

5 1012

Manganese

Mn-51

1 1012

Mn-52

2 1012

Mn-52m

8 1011

Mn-53

1 1014

Mn-54

3 1011

Mn-56

1 1012

Mendelevium

Md-257

9 1011

Md-258

4 109

Mercury

Hg-193

(organic)

3 1012

Hg-193

(inorganic)

3 1012

Hg-193

(vapour)

2 1013

Hg-193m

(organic)

2 1012

Hg-193m

(inorganic)

2 1012

Hg-193m

(vapour)

6 1012

Hg-194

(organic)

3 1011

Hg-194

(inorganic)

1 1012

Hg-194

(vapour)

6 1011

Hg-195

(organic)

5 1012

Hg-195

(inorganic)

5 1012

Hg-195

(vapour)

1 1013

Hg-195m

(organic)

3 1012

Hg-195m

(inorganic)

3 1012

Hg-195m

(vapour)

3 1012

Hg-197

(organic)

7 1012

Hg-197

(inorganic)

7 1012

Hg-197

(vapour)

5 1012

Hg-197m

(organic)

2 1012

Hg-197m

(inorganic)

2 1012

Hg-197m

(vapour)

4 1012

Hg-199m

(organic)

2 1012

Hg-199m

(inorganic)

2 1012

Hg-199m

(vapour)

1 1014

Hg-203

(organic)

3 1012

Hg-203

(inorganic)

3 1012

Hg-203

(vapour)

3 1012

Molybdenum

Mo-90

2 1012

Mo-93

2 1012

Mo-93m

4 1012

Mo-99

2 1012

Mo-101

2 1012

Neodymium

Nd-136

4 1012

Nd-138

5 1013

Nd-139

2 1012

Nd-139m

3 1012

Nd-141

2 1013

Nd-147

2 1012

Nd-149

2 1012

Nd-151

1 1012

Neon

Ne-19

(gas)

6 1013

Neptunium

Np-232

3 1012

Np-233

2 1014

Np-234

5 1012

Np-235

2 1013

Np-236

(long lived isotope)

3 109

Np-236

(short lived isotope)

3 1012

Np-237

5 108

Np-238

2 1012

Np-239

1 1012

Np-240

7 1011

Nickel

Ni-56

4 1012

Ni-56

(carbonyl vapour)

1 1013

Ni-57

2 1012

Ni-57

(carbonyl vapour)

2 1013

Ni-59

4 1013

Ni-59

(carbonyl vapour)

2 1013

Ni-63

1 1013

Ni-63

(carbonyl vapour)

1 1013

Ni-65

1 1012

Ni-65

(carbonyl vapour)

4 1013

Ni-66

5 1012

Ni-66

(carbonyl vapour)

1 1013

Niobium

Nb-88

7 1011

Nb-89

(long lived isotope)

1 1012

Nb-89

(short lived isotope)

8 1011

Nb-90

2 1012

Nb-93m

1 1013

Nb-94

1 1011

Nb-95

2 1012

Nb-95m

2 1012

Nb-96

2 1012

Nb-97

2 1012

Nb-98

1 1012

Nitrogen

N-13

(gas)

6 1013

Osmium

Os-180

1 1013

Os-181

3 1012

Os-182

6 1012

Os-185

7 1011

Os-189m

1 1013

Os-191

4 1012

Os-191m

7 1012

Os-193

2 1012

Os-194

2 1011

Palladium

Pd-100

7 1012

Pd-101

8 1012

Pd-103

4 1013

Pd-107

3 1013

Pd-109

2 1012

Phosphorus

P-32

1 1011

P-33

3 1012

Platinum

Pt-186

9 1013

Pt-188

6 1012

Pt-189

6 1012

Pt-191

7 1012

Pt-193

1 1014

Pt-193m

3 1012

Pt-195m

3 1012

Pt-197

2 1012

Pt-197m

2 1012

Pt-199

2 1012

Pt-200

2 1012

Plutonium

Pu-234

1 1012

Pu-235

2 1013

Pu-236

6 108

Pu-237

1 1013

Pu-238

2 108

Pu-239

2 108

Pu-240

2 108

Pu-241

1 1010

Pu-242

2 108

Pu-243

2 1012

Pu-244

2 108

Pu-245

2 1012

Pu-246

2 1012

Polonium

Po-203

3 1012

Po-205

7 1012

Po-206

1 1011

Po-207

8 1012

Po-208

2 109

Po-209

2 109

Po-210

4 109

Potassium

K-40

2 1012

K-42

7 1011

K-43

2 1012

K-44

6 1011

K-45

9 1011

Praseodymium

Pr-136

1 1012

Pr-137

2 1012

Pr-138m

2 1012

Pr-139

7 1012

Pr-142

1 1012

Pr-142m

2 1015

Pr-143

2 1012

Pr-144

2 1012

Pr-145

1 1012

Pr-147

1 1012

Promethium

Pm-141

1 1012

Pm-143

9 1011

Pm-144

2 1011

Pm-145

3 1012

Pm-146

2 1011

Pm-147

4 1012

Pm-148

1 1012

Pm-148m

5 1011

Pm-149

2 1012

Pm-150

1 1012

Pm-151

2 1012

Protactinium

Pa-227

3 1011

Pa-228

3 1011

Pa-230

3 1010

Pa-231

2 108

Pa-232

2 1012

Pa-233

2 1012

Pa-234

5 1011

Radium

Ra-223

3 109

Ra-224

7 109

Ra-225

3 109

Ra-226

2 109

Ra-227

2 1012

Ra-228

1 109

Rhenium

Re-177

2 1012

Re-178

2 1012

Re-181

3 1012

Re-182

(long lived isotope)

2 1012

Re-182

(short lived isotope)

4 1012

Re-184

1 1012

Re-184m

7 1011

Re-186

2 1012

Re-186m

1 1012

Re-187

5 1014

Re-188

1 1012

Re-188m

3 1012

Re-189

2 1012

Rhodium

Rh-99

4 1012

Rh-99m

9 1012

Rh-100

4 1012

Rh-101

7 1011

Rh-101m

2 1013

Rh-102

1 1011

Rh-102m

6 1011

Rh-103m

3 1015

Rh-105

2 1012

Rh-106m

2 1012

Rh-107

2 1012

Rubidium

Rb-79

1 1012

Rb-81

2 1012

Rb-81m

4 1012

Rb-82m

3 1012

Rb-83

1 1012

Rb-84

1 1012

Rb-86

2 1011

Rb-87

4 1012

Rb-88

5 1011

Rb-89

9 1011

Ruthenium

Ru-94

1 1014

Ru-94

(tetroxide vapour)

1 1014

Ru-97

3 1013

Ru-97

(tetroxide vapour)

1 1014

Ru-103

2 1012

Ru-103

(tetroxide vapour)

1 1013

Ru-105

2 1012

Ru-105

(tetroxide vapour)

6 1013

Ru-106

3 1011

Ru-106

(tetroxide vapour)

8 1011

Samarium

Sm-141

1 1012

Sm-141m

2 1012

Sm-142

9 1012

m-145

3 1012

Sm-146

2 109

Sm-147

3 109

Sm-151

6 1012

Sm-153

2 1012

Sm-155

2 1012

Sm-156

2 1012

Scandium

Sc-43

2 1012

Sc-44

2 1012

Sc-44m

9 1012

Sc-46

3 1011

Sc-47

3 1012

Sc-48

2 1012

Sc-49

1 1012

Selenium

Se-70

2 1012

Se-73

2 1012

Se-73m

2 1012

Se-75

2 1011

Se-79

5 1010

Se-81

2 1012

Se-81m

4 1012

Se-83

2 1012

Silicon

Si-31

2 1012

Si-32

2 1011

Silver

Ag-102

1 1012

Ag-103

2 1012

Ag-104

3 1012

Ag-104m

2 1012

Ag-105

2 1012

Ag-106

2 1012

Ag-106m

2 1012

Ag-108m

1 1011

Ag-110m

3 1010

Ag-111

2 1012

Ag-112

7 1011

Ag-115

9 1011

Sodium

Na-22

1 1011

Na-24

2 1012

Strontium

Sr-80

1 1014

Sr-81

9 1011

Sr-82

2 1012

Sr-83

3 1012

Sr-85

1 1012

Sr-85m

3 1013

Sr-87m

7 1012

Sr-89

1 1012

Sr-90

8 1010

Sr-91

2 1012

Sr-92

2 1012

Sulphur

S-35

(inorganic)

1 1012

S-35

(organic)

2 1011

S-35

(carbon disulphide vapour)

2 1013

S-35

(vapour)

2 1014

S-35

(dioxide gas)

1 1014

Tantalum

Ta-172

2 1012

Ta-173

2 1012

Ta-174

2 1012

Ta-175

2 1012

Ta-176

3 1012

Ta-177

1 1013

Ta-178

(long lived isotope)

3 1012

Ta-179

6 1012

Ta-180

9 1011

Ta-180m

6 1012

Ta-182

3 1011

Ta-182m

2 1012

Ta-183

2 1012

Ta-184

2 1012

Ta-185

1 1012

Ta-186

9 1011

Technetium

Tc-93

5 1013

Tc-93m

4 1012

Tc-94

6 1012

Tc-94m

1 1012

Tc-95

4 1013

Tc-95m

1 1012

Tc-96

4 1012

Tc-96m

2 1013

Tc-97

9 1012

Tc-97m

5 1012

Tc-98

1 1011

Tc-99

5 1010

Tc-99m

1 1013

Tc-101

2 1012

Tc-104

6 1011

Tellurium

Te-116

6 1012

Te-116

(vapour)

2 1014

Te-121

4 1012

Te-121

(vapour)

3 1013

Te-121m

1 1012

Te-121m

(vapour)

3 1012

Te-123

6 1012

Te-123

(vapour)

2 1012

Te-123m

2 1012

Te-123m

(vapour)

5 1012

Te-125m

2 1012

Te-125m

(vapour)

8 1012

Te-127

2 1012

Te-127

(vapour)

2 1014

Te-127m

1 1012

Te-127m

(vapour)

2 1012

Te-129

2 1012

Te-129

(vapour)

4 1014

Te-129m

1 1012

Te-129m

(vapour)

3 1012

Te-131

1 1012

Te-131

(vapour)

1 1014

Te-131m

2 1012

Te-131m

(vapour)

5 1012

Te-132

3 1012

Te-132

(vapour)

2 1012

Te-133

1 1012

Te-133

(vapour)

7 1013

Te-133m

1 1012

Te-133m

(vapour)

2 1013

Te-134

3 1012

Te-134

(vapour)

7 1013

Terbium

Tb-147

2 1012

Tb-149

2 1012

Tb-150

2 1012

Tb-151

4 1012

Tb-153

7 1012

Tb-154

4 1012

Tb-155

1 1013

Tb-156

3 1012

Tb-156m

(long lived isotope)

1 1013

Tb-156m

(short lived isotope)

4 1012

Tb-157

1 1013

Tb-158

2 1011

Tb-160

5 1011

Tb-161

2 1012

Thallium

Tl-194

1 1013

Tl-194m

2 1012

Tl-195

4 1012

Tl-197

5 1012

Tl-198

7 1012

Tl-198m

2 1012

Tl-199

6 1012

Tl-200

1 1013

Tl-201

7 1012

Tl-202

7 1012

Tl-204

2 1012

Thorium

Th-226

4 1011

Th-227

2 109

Th-228

6 108

Th-229

1 108

Th-230

2 108

Th-231

2 1012

Th-232

2 108

Th-234

3 1012

Thulium

Tm-162

2 1012

Tm-166

3 1012

Tm-167

4 1012

Tm-170

2 1012

Tm-171

1 1013

Tm-172

2 1012

Tm-173

2 1012

Tm-175

2 1012

Tin

Sn-110

6 1013

Sn-111

2 1012

Sn-113

5 1012

Sn-117m

3 1012

Sn-119m

5 1012

Sn-121

3 1012

Sn-121m

4 1012

Sn-123

2 1012

Sn-123m

2 1012

Sn-125

1 1012

Sn-126

5 1011

Sn-127

2 1012

Sn-128

2 1012

Titanium

Ti-44

2 1011

Ti-45

2 1012

Tungsten

W-176

5 1012

W-177

3 1012

W-178

6 1013

W-179

1 1013

W-181

1 1013

W-185

4 1012

W-187

2 1012

W-188

3 1012

Uranium

U-230

2 109

U-231

7 1012

U-232

6 108

U-233

3 109

U-234

3 109

U-235

3 109

U-236

3 109

U-237

2 1012

U-238

3 109

U-239

2 1012

U-240

2 1012

Vanadium

V-47

1 1012

V-48

1 1012

V-49

2 1014

Xenon

Xe-120

(gas)

1 1014

Xe-121

(gas)

3 1013

Xe-122

(gas)

1 1015

Xe-123

(gas)

9 1013

Xe-125

(gas)

2 1014

Xe-127

(gas)

2 1014

Xe-129m

(gas)

2 1015

Xe-131

(gas)

4 1015

Xe-133

(gas)

1 1015

Xe-133m

(gas)

2 1015

Xe-135

(gas)

2 1014

Xe-135m

(gas)

1 1014

Xe-138

(gas)

5 1013

Ytterbium

Yb-162

1 1013

Yb-166

8 1012

Yb-167

4 1012

Yb-169

3 1012

Yb-175

4 1012

Yb-177

2 1012

Yb-178

2 1012

Yttrium

Y-86

2 1012

Y-86m

1 1013

Y-87

2 1013

Y-88

2 1011

Y-90

2 1012

Y-90m

7 1012

Y-91

2 1012

Y-91m

2 1013

Y-92

6 1011

Y-93

8 1011

Y-94

6 1011

Y-95

6 1011

Zinc

Zn-62

1 1013

Zn-63

1 1012

Zn-65

5 1010

Zn-69

2 1012

Zn-69m

2 1013

Zn-71m

2 1012

Zn-72

3 1012

Zirconium

Zr-86

2 1013

Zr-88

1 1012

Zr-89

4 1012

Zr-93

8 1011

Zr-95

8 1011

Zr-97

2 1012

Other radionuclides not listed above (see note)

4 107

Note: In the case of radionuclides not specified elsewhere in this Part, the quantity specified in this entry is to be used unless the Executive has approved some other quantity for that radionuclide.

Part IIQuantity ratios for more than one radionuclide

1

For the purpose of regulation 3(2), the quantity ratio for more than one radionuclide is the sum of the quotients of the quantity of a radionuclide present Qp divided by the quantity of that radionuclide specified in the appropriate column of Part I Qlim, namely—

ΣQpQlimmath

2

In any case where the isotopic composition of a radioactive substance is not known or is only partially known, the quantity ratio for that substance shall be calculated by using the values specified in the appropriate column in Part I for ‘other radionuclides not listed above’ for any radionuclide that has not been identified or where the quantity of a radionuclide is uncertain, unless the employer can show that the use of some other value is appropriate in the circumstances of a particular case, when he may use that value.