Determination of basic radionuclide values

The following basic values for individual radionuclides are given in Table 2.2.7.2.2.1:
(a) A1 and A2 in TBq;
(b) Activity concentration limits for exempt material in Bq/g; and
(c) Activity limits for exempt consignments in Bq.
 
 
Table 2.2.7.2.2.1: Basic radionuclides values for individual radionuclides
 
Radionuclide
(atomic number)
A1
(TBq)

 

A2
(TBq)

Activity

concentration limit for exempt material

(Bq/g)

Activity limit for an exempt consignment (Bq)

Actinium (89)

       

Ac-225 (a)

8 × 10-1

6 × 10-3

1 × 101

1 × 104

Ac-227 (a)

9 × 10-1

9 × 10-5

1 × 10-1

1 × 103

Ac-228

6 × 10-1

5 × 10-1

1 × 101

1 × 106

Silver (47)

       

Ag-105

2 × 100

2 × 100

1 × 102

1 × 106

Ag-108m (a)

7 × 10-1

7 ×10-1

1 ×10(b)

1 × 10(b)

Ag-110m (a)

4 × 10-1

4 × 10-1

1 × 101

1 × 106

Ag-111

2 × 100

6 × 10-1

1 × 103

1 × 106

Aluminium (13)

       

Al-26

1 × 10-1

1 × 10-1

1 × 101

1 × 105

Americium (95)

Am-241

1 × 101

1 × 10-3

1 × 100

1 × 104

Am-242m (a)

1 × 101

1 × 10-3

1 × 10(b)

1 × 10(b)

Am-243 (a)

5 × 100

1 × 10-3

1 × 10(b)

1 × 10(b)

Argon (18)

       

Ar-37

4 × 101

4 × 101

1 × 106

1 × 108

Ar-39

4 × 101

2 × 101

1 × 107

1 × 104

Ar-41

3 × 10-1

3 × 10-1

1 × 102

1 × 109

Arsenic (33)

       

As-72

3 × 10-1

3 × 10-1

1 × 101

1 × 105

As-73

4 × 101

4 × 101

1 × 103

1 × 107

As-74

1 × 100

9 × 10-1

1 × 101

1 × 106

As-76

3 × 10-1

3 × 10-1

1 × 102

1 × 105

As-77

2 × 101

7 × 10-1

1 × 103

1 × 106

Astatine (85)

       

At-211 (a)

2 × 101

5 × 10-1

1 × 103

1 × 107

Radionuclide
(atomic number)

A1

 

(TBq)

A2

 

(TBq)

Activity concentration limit for exempt material

(Bq/g)

Activity limit for an exempt consignment (Bq)

Gold (79)

       

Au-193

7 × 100

2 × 100

1 × 102

1 × 107

Au-194

1 × 100

1 × 100

1 × 101

1 × 106

Au-195

1 × 101

6 × 100

1 × 102

1 × 107

Au-198

1 × 100

6 × 10-1

1 × 102

1 × 106

Au-199

1 × 101

6 × 10-1

1 × 102

1 × 106

Barium (56)

       

Ba-131 (a)

2 × 100

2 × 100

1 × 102

1 × 106

Ba-133

3 × 100

3 × 100

1 × 102

1 × 106

Ba-133m

2 × 101

6 × 10-1

1 × 102

1 × 106

Ba-140 (a)

5 × 10-1

3 × 10-1

1 × 10(b)

1 × 10(b)

Beryllium (4)

       

Be-7

2 × 101

2 × 101

1 × 103

1 × 107

Be-10

4 × 101

6 × 10-1

1 × 104

1 × 106

Bismuth (83)

       

Bi-205

7 × 10-1

7 × 10-1

1 × 101

1 × 106

Bi-206

3 × 10-1

3 × 10-1

1 × 101

1 × 105

Bi-207

7 × 10-1

7 × 10-1

1 × 101

1 × 106

Bi-210

1 × 100

6 × 10-1

1 × 103

1 × 106

Bi-210m (a)

6 × 10-1

2 × 10-2

1 × 101

1 × 105

Bi-212 (a)

7 × 10-1

6 × 10-1

1 × 10(b)

1 × 10(b)

Berkelium (97)

       

Bk-247

8 × 100

8 × 10-4

1 × 100

1 × 104

Bk-249 (a)

4 × 101

3 × 10-1

1 × 103

1 × 106

Bromine (35)

       

Br-76

4 × 10-1

4 × 10-1

1 × 101

1 × 105

Br-77

3 × 100

3 × 100

1 × 102

1 × 106

Br-82

4 × 10-1

4 × 10-1

1 × 101

1 × 106

Carbon (6)

       

C-11

1 × 100

6 × 10-1

1 × 101

1 × 106

C-14

4 × 101

3 × 100

1 × 104

1 × 107

Radionuclide
(atomic number)

A1

 

(TBq)

A2

 

(TBq)

Activity concentration limit for exempt material

(Bq/g)

Activity limit for an exempt consignment (Bq)

Calcium (20)

       

Ca-41

Unlimited

Unlimited

1 × 105

1 × 107

Ca-45

4 × 101

1 × 100

1 × 104

1 × 107

Ca-47 (a)

3 × 100

3 × 10-1

1 × 101

1 × 106

Cadmium (48)

       

Cd-109

3 × 101

2 × 100

1 × 104

1 × 106

Cd-113m

4 × 101

5 × 10-1

1 × 103

1 × 106

Cd-115 (a)

3 × 100

4 × 10-1

1 × 102

1 × 106

Cd-115m

5 × 10-1

5 × 10-1

1 × 103

1 × 106

Cerium (58)

       

Ce-139

7 × 100

2 × 100

1 × 102

1 × 106

Ce-141

2 × 101

6 × 10-1

1 × 102

1 × 107

Ce-143

9 × 10-1

6 × 10-1

1 × 102

1 × 106

Ce-144 (a)

2 × 10-1

2 × 10-1

1 × 10(b)

1 × 10(b)

Californium (98)

       

Cf-248

4 × 101

6 × 10-3

1 × 101

1 × 104

Cf-249

3 × 100

8 × 10-4

1 × 100

1 × 103

Cf-250

2 × 101

2 × 10-3

1 × 101

1 × 104

Cf-251

7 × 100

7 × 10-4

1 × 100

1 × 103

Cf-252

1 × 10-1

3 × 10-3

1 × 101

1 × 104

Cf-253 (a)

4 × 101

4 × 10-2

1 × 102

1 × 105

Cf-254

1 × 10-3

1 × 10-3

1 × 100

1 × 103

Chlorine (17)

       

Cl-36

1 × 101

6 × 10-1

1 × 104

1 × 106

Cl-38

2 × 10-1

2 × 10-1

1 × 101

1 × 105

Curium (96)

       

Cm-240

4 × 101

2 × 10-2

1 × 102

1 × 105

Cm-241

2 × 100

1 × 100

1 × 102

1 × 106

Cm-242

4 × 101

1 × 10-2

1 × 102

1 × 105

Cm-243

9 × 100

1 × 10-3

1 × 100

1 × 104

Cm-244

2 × 101

2 × 10-3

1 × 101

1 × 104

Cm-245

9 × 100

9 × 10-4

1 × 100

1 × 103

Cm-246

9 × 100

9 × 10-4

1 × 100

1 × 103

Radionuclide
(atomic number)

A1

 

(TBq)

A2

 

(TBq)

Activity concentration limit for exempt material

(Bq/g)

Activity limit for an exempt consignment (Bq)

Cm-247 (a)

3 × 100

1 × 10-3

1 × 100

1 × 104

Cm-248

2 × 10-2

3 × 10-4

1 × 100

1 × 103

Cobalt (27)

       

Co-55

5 × 10-1

5 × 10-1

1 × 101

1 × 106

Co-56

3 × 10-1

3 × 10-1

1 × 101

1 × 105

Co-57

1 × 101

1 × 101

1 × 102

1 × 106

Co-58

1 × 100

1 × 100

1 × 101

1 × 106

Co-58m

4 × 101

4 × 101

1 × 104

1 × 107

Co-60

4 × 10-1

4 × 10-1

1 × 101

1 × 105

Chromium (24)

       

Cr-51

3 × 101

3 × 101

1 × 103

1 × 107

Caesium (55)

       

Cs-129

4 × 100

4 × 100

1 × 102

1 × 105

Cs-131

3 × 101

3 × 101

1 × 103

1 × 106

Cs-132

1 × 100

1 × 100

1 × 101

1 × 105

Cs-134

7 × 10-1

7 × 10-1

1 × 101

1 × 104

Cs-134m

4 × 101

6 × 10-1

1 × 103

1 × 105

Cs-135

4 × 101

1 × 100

1 × 104

1 × 107

Cs-136

5 × 10-1

5 × 10-1

1 × 101

1 × 105

Cs-137 (a)

2 × 100

6 × 10-1

1 × 10(b)

1 × 10(b)

Copper (29)

       

Cu-64

6 × 100

1 × 100

1 × 102

1 × 106

Cu-67

1 × 101

7 × 10-1

1 × 102

1 × 106

Dysprosium (66)

       

Dy-159

2 × 101

2 × 101

1 × 103

1 × 107

Dy-165

9 × 10-1

6 × 10-1

1 × 103

1 × 106

Dy-166 (a)

9 × 10-1

3 × 10-1

1 × 103

1 × 106

Erbium (68)

       

Er-169

4 × 101

1 × 100

1 × 104

1 × 107

Er-171

8 × 10-1

5 × 10-1

1 × 102

1 × 106

Europium (63)

       

Eu-147

2 × 100

2 × 100

1 × 102

1 × 106

Eu-148

5 × 10-1

5 × 10-1

1 × 101

1 × 106

Radionuclide
(atomic number)

A1

 

(TBq)

A2

 

(TBq)

Activity concentration limit for exempt material

(Bq/g)

Activity limit for an exempt consignment (Bq)

Eu-149

2 × 101

2 × 101

1 × 102

1 × 107

Eu-150(short lived)

2 × 100

7 × 10-1

1 × 103

1 × 106

Eu-150(long lived)

7 × 10-1

7 × 10-1

1 × 101

1 × 106

Eu-152

1 × 100

1 × 100

1 × 101

1 × 106

Eu-152m

8 × 10-1

8 × 10-1

1 × 102

1 × 106

Eu-154

9 × 10-1

6 × 10-1

1 × 101

1 × 106

Eu-155

2 × 101

3 × 100

1 × 102

1 × 107

Eu-156

7 × 10-1

7 × 10-1

1 × 101

1 × 106

Fluorine (9)

       

F-18

1 × 100

6 × 10-1

1 × 101

1 × 106

Iron (26)

       

Fe-52 (a)

3 × 10-1

3 × 10-1

1 × 101

1 × 106

Fe-55

4 × 101

4 × 101

1 × 104

1 × 106

Fe-59

9 × 10-1

9 × 10-1

1 × 101

1 × 106

Fe-60 (a)

4 × 101

2 × 10-1

1 × 102

1 × 105

Gallium (31)

       

Ga-67

7 × 100

3 × 100

1 × 102

1 × 106

Ga-68

5 × 10-1

5 × 10-1

1 × 101

1 × 105

Ga-72

4 × 10-1

4 × 10-1

1 × 101

1 × 105

Gadolinium (64)

       

Gd-146 (a)

5 × 10-1

5 × 10-1

1 × 101

1 × 106

Gd-148

2 × 101

2 × 10-3

1 × 101

1 × 104

Gd-153

1 × 101

9 × 100

1 × 102

1 × 107

Gd-159

3 × 100

6 × 10-1

1 × 103

1 × 106

Germanium (32)

       

Ge-68 (a)

5 × 10-1

5 × 10-1

1 × 101

1 × 105

Ge-71

4 × 101

4 × 101

1 × 104

1 × 108

Ge-77

3 × 10-1

3 × 10-1

1 × 101

1 × 105

Hafnium (72)

       

Hf-172 (a)

6 × 10-1

6 × 10-1

1 × 101

1 × 106

Hf-175

3 × 100

3 × 100

1 × 102

1 × 106

Hf-181

2 × 100

5 × 10-1

1 × 101

1 × 106

Hf-182

Unlimited

Unlimited

1 × 102

1 × 106

Radionuclide
(atomic number)

A1

 

(TBq)

A2

 

(TBq)

Activity concentration limit for exempt material

(Bq/g)

Activity limit for an exempt consignment (Bq)

Mercury (80)

       

Hg-194 (a)

1 × 100

1 × 100

1 × 101

1 × 106

Hg-195m (a)

3 × 100

7 × 10-1

1 × 102

1 × 106

Hg-197

2 × 101

1 × 101

1 × 102

1 × 107

Hg-197m

1 × 101

4 × 10-1

1 × 102

1 × 106

Hg-203

5 × 100

1 × 100

1 × 102

1 × 105

Holmium (67)

       

Ho-166

4 × 10-1

4 × 10-1

1 × 103

1 × 105

Ho-166m

6 × 10-1

5 × 10-1

1 × 101

1 × 106

Iodine (53)

       

I-123

6 × 100

3 × 100

1 × 102

1 × 107

I-124

1 × 100

1 × 100

1 × 101

1 × 106

I-125

2 × 101

3 × 100

1 × 103

1 × 106

I-126

2 × 100

1 × 100

1 × 102

1 × 106

I-129

Unlimited

Unlimited

1 ×102

1 × 105

I-131

3 × 100

7 × 10-1

1 × 102

1 × 106

I-132

4 × 10-1

4 × 10-1

1 × 101

1 × 105

I-133

7 × 10-1

6 × 10-1

1 × 101

1 × 106

I-134

3 × 10-1

3 × 10-1

1 × 101

1 × 105

I-135 (a)

6 × 10-1

6 × 10-1

1 × 101

1 × 106

Indium (49)

       

In-111

3 × 100

3 × 100

1 × 102

1 × 106

In-113m

4 × 100

2 × 100

1 × 102

1 × 106

In-114m (a)

1 × 101

5 × 10-1

1 × 102

1 × 106

In-115m

7 × 100

1 × 100

1 × 102

1 × 106

Iridium (77)

       

Ir-189 (a)

1 × 101

1 × 101

1 × 102

1 × 107

Ir-190

7 × 10-1

7 × 10-1

1 × 101

1 × 106

Ir-192

1 × 100(c)

6 × 10-1

1 × 101

1 × 104

Ir-194

3 × 10-1

3 × 10-1

1 × 102

1 × 105

Potassium (19)

       

K-40

9 × 10-1

9 × 10-1

1 × 102

1 × 106

K-42

2 × 10-1

2 × 10-1

1 × 102

1 × 106

Radionuclide
(atomic number)

A1

 

(TBq)

A2

 

(TBq)

Activity concentration limit for exempt material

(Bq/g)

Activity limit for an exempt consignment (Bq)

K-43

7 × 10-1

6 × 10-1

1 × 101

1 × 106

Krypton (36)

       

Kr-79

4 × 100

2 × 100

1 × 103

1 × 105

Kr-81

4 × 101

4 × 101

1 × 104

1 × 107

Kr-85

1 × 101

1 × 101

1 × 105

1 × 104

Kr-85m

8 × 100

3 × 100

1 × 103

1 × 1010

Kr-87

2 × 10-1

2 × 10-1

1 × 102

1 × 109

Lanthanum (57)

       

La-137

3 × 101

6 × 100

1 × 103

1 × 107

La-140

4 × 10-1

4 × 10-1

1 × 101

1 × 105

Lutetium (71)

       

Lu-172

6 × 10-1

6 × 10-1

1 × 101

1 × 106

Lu-173

8 × 100

8 × 100

1 × 102

1 × 107

Lu-174

9 × 100

9 × 100

1 × 102

1 × 107

Lu-174m

2 × 101

1 × 101

1 × 102

1 × 107

Lu-177

3 × 101

7 × 10-1

1 × 103

1 × 107

Magnesium (12)

       

Mg-28 (a)

3 × 10-1

3 × 10-1

1 × 101

1 × 105

Manganese (25)

       

Mn-52

3 × 10-1

3 × 10-1

1 × 101

1 × 105

Mn-53

Unlimited

Unlimited

1 × 104

1 × 109

Mn-54

1 × 100

1 × 100

1 × 101

1 × 106

Mn-56

3 × 10-1

3 × 10-1

1 × 101

1 × 105

Molybdenum (42)

       

Mo-93

4 × 101

2 × 101

1 × 103

1 × 108

Mo-99 (a)

1 × 100

6 × 10-1

1 × 102

1 × 106

Nitrogen (7)

       

N-13

9 × 10-1

6 × 10-1

1 × 102

1 × 109

Sodium (11)

       

Na-22

5 × 10-1

5 × 10-1

1 × 101

1 × 106

Na-24

2 × 10-1

2 × 10-1

1 × 101

1 × 105

Niobium (41)

       

Nb-93m

4 × 101

3 × 101

1 × 104

1 × 107

Radionuclide
(atomic number)

A1

 

(TBq)

A2

 

(TBq)

Activity concentration limit for exempt material

(Bq/g)

Activity limit for an exempt consignment (Bq)

Nb-94

7 × 10-1

7 × 10-1

1 × 101

1 × 106

Nb-95

1 × 100

1 × 100

1 × 101

1 × 106

Nb-97

9 × 10-1

6 × 10-1

1 × 101

1 × 106

Neodymium (60)

       

Nd-147

6 × 100

6 × 10-1

1 × 102

1 × 106

Nd-149

6 × 10-1

5 × 10-1

1 × 102

1 × 106

Nickel (28)

       

Ni-59

Unlimited

Unlimited

1 × 104

1 × 108

Ni-63

4 × 101

3 × 101

1 × 105

1 × 108

Ni-65

4 × 10-1

4 × 10-1

1 × 101

1 × 106

Neptunium (93)

       

Np-235

4 × 101

4 × 101

1 × 103

1 × 107

Np-236(short-lived)

2 × 101

2 × 100

1 × 103

1 × 107

Np-236(long-lived)

9 × 100

2 × 10-2

1 × 102

1 × 105

Np-237

2 × 101

2 × 10-3

1 × 10(b)

1 × 10(b)

Np-239

7 × 100

4 × 10-1

1 × 102

1 × 107

Osmium (76)

       

Os-185

1 × 100

1 × 100

1 × 101

1 × 106

Os-191

1 × 101

2 × 100

1 × 102

1 × 107

Os-191m

4 × 101

3 × 101

1 × 103

1 × 107

Os-193

2 × 100

6 × 10-1

1 × 102

1 × 106

Os-194 (a)

3 × 10-1

3 × 10-1

1 × 102

1 × 105

Phosphorus (15)

       

P-32

5 × 10-1

5 × 10-1

1 × 103

1 × 105

P-33

4 × 101

1 × 100

1 × 105

1 × 108

Protactinium (91)

       

Pa-230 (a)

2 × 100

7 × 10-2

1 × 101

1 × 106

Pa-231

4 × 100

4 × 10-4

1 × 100

1 × 103

Pa-233

5 × 100

7 × 10-1

1 × 102

1 × 107

Lead (82)

       

Pb-201

1 × 100

1 × 100

1 × 101

1 × 106

Pb-202

4 × 101

2 × 101

1 × 103

1 × 106

Pb-203

4 × 100

3 × 100

1 × 102

1 × 106

Radionuclide
(atomic number)

A1

 

(TBq)

A2

 

(TBq)

Activity concentration limit for exempt material

(Bq/g)

Activity limit for an exempt consignment (Bq)

Pb-205

Unlimited

Unlimited

1 × 104

1 × 107

Pb-210 (a)

1 × 100

5 × 10-2

1 × 10(b)

1 × 10(b)

Pb-212 (a)

7 × 10-1

2 × 10-1

1 × 10(b)

1 × 10(b)

Palladium (46)

       

Pd-103 (a)

4 × 101

4 × 101

1 × 103

1 × 108

Pd-107

Unlimited

Unlimited

1 × 105

1 × 108

Pd-109

2 × 100

5 × 10-1

1 × 103

1 × 106

Promethium (61)

       

Pm-143

3 × 100

3 × 100

1 × 102

1 × 106

Pm-144

7 × 10-1

7 × 10-1

1 × 101

1 × 106

Pm-145

3 × 101

1 × 101

1 × 103

1 × 107

Pm-147

4 × 101

2 × 100

1 × 104

1 × 107

Pm-148m (a)

8 × 10-1

7 × 10-1

1 × 101

1 × 106

Pm-149

2 × 100

6 × 10-1

1 × 103

1 × 106

Pm-151

2 × 100

6 × 10-1

1 × 102

1 × 106

Polonium (84)

       

Po-210

4 × 101

2 × 10-2

1 × 101

1 × 104

Praseodymium (59)

       

Pr-142

4 × 10-1

4 × 10-1

1 × 102

1 × 105

Pr-143

3 × 100

6 × 10-1

1 × 104

1 × 106

Platinum (78)

       

Pt-188 (a)

1 × 100

8 × 10-1

1 × 101

1 × 106

Pt-191

4 × 100

3 × 100

1 × 102

1 × 106

Pt-193

4 × 101

4 × 101

1 × 104

1 × 107

Pt-193m

4 × 101

5 × 10-1

1 × 103

1 × 107

Pt-195m

1 × 101

5 × 10-1

1 × 102

1 × 106

Pt-197

2 × 101

6 × 10-1

1 × 103

1 × 106

Pt-197m

1 × 101

6 × 10-1

1 × 102

1 × 106

Plutonium (94)

       

Pu-236

3 × 101

3 × 10-3

1 × 101

1 × 104

Pu-237

2 × 101

2 × 101

1 × 103

1 × 107

Pu-238

1 × 101

1 × 10-3

1 × 100

1 × 104

Pu-239

1 × 101

1 × 10-3

1 × 100

1 × 104

Radionuclide
(atomic number)

A1

 

(TBq)

A2

 

(TBq)

Activity concentration limit for exempt material

(Bq/g)

Activity limit for an exempt consignment (Bq)

Pu-240

1 × 101

1 × 10-3

1 × 100

1 × 103

Pu-241 (a)

4 × 101

6 × 10-2

1 × 102

1 × 105

Pu-242

1 × 101

1 × 10-3

1 × 100

1 × 104

Pu-244 (a)

4 × 10-1

1 × 10-3

1 × 100

1 × 104

Radium (88)

       

Ra-223 (a)

4 × 10-1

7 × 10-3

1 × 10(b)

1 × 10(b)

Ra-224 (a)

4 × 10-1

2 × 10-2

1 × 10(b)

1 × 10(b)

Ra-225 (a)

2 × 10-1

4 × 10-3

1 × 102

1 × 105

Ra-226 (a)

2 × 10-1

3 × 10-3

1 × 10(b)

1 × 10(b)

Ra-228 (a)

6 × 10-1

2 × 10-2

1 × 10(b)

1 × 10(b)

Rubidium (37)

       

Rb-81

2 × 100

8 × 10-1

1 × 101

1 × 106

Rb-83 (a)

2 × 100

2 × 100

1 × 102

1 × 106

Rb-84

1 × 100

1 × 100

1 × 101

1 × 106

Rb-86

5 × 10-1

5 × 10-1

1 × 102

1 × 105

Rb-87

Unlimited

Unlimited

1 × 104

1 × 107

Rb(nat)

Unlimited

Unlimited

1 × 104

1 × 107

Rhenium (75)

       

Re-184

1 × 100

1 × 100

1 × 101

1 × 106

Re-184m

3 × 100

1 × 100

1 × 102

1 × 106

Re-186

2 × 100

6 × 10-1

1 × 103

1 × 106

Re-187

Unlimited

Unlimited

1 × 106

1 × 109

Re-188

4 × 10-1

4 × 10-1

1 × 102

1 × 105

Re-189 (a)

3 × 100

6 × 10-1

1 × 102

1 × 106

Re(nat)

Unlimited

Unlimited

1 × 106

1 × 109

Rhodium (45)

       

Rh-99

2 × 100

2 × 100

1 × 101

1 × 106

Rh-101

4 × 100

3 × 100

1 × 102

1 × 107

Rh-102

5 × 10-1

5 × 10-1

1 × 101

1 × 106

Rh-102m

2 × 100

2 × 100

1 × 102

1 × 106

Rh-103m

4 × 101

4 × 101

1 × 104

1 × 108

Rh-105

1 × 101

8 × 10-1

1 × 102

1 × 107

Radon (86)

       

Radionuclide
(atomic number)

A1

 

(TBq)

A2

 

(TBq)

Activity concentration limit for exempt material

(Bq/g)

Activity limit for an exempt consignment (Bq)

Rn-222 (a)

3 × 10-1

4 × 10-3

1 × 10(b)

1 × 10(b)

Ruthenium (44)

       

Ru-97

5 × 100

5 × 100

1 × 102

1 × 107

Ru-103 (a)

2 × 100

2 × 100

1 × 102

1 × 106

Ru-105

1 × 100

6 × 10-1

1 × 101

1 × 106

Ru-106 (a)

2 × 10-1

2 × 10-1

1 × 10(b)

1 × 10(b)

Sulphur (16)

       

S-35

4 × 101

3 × 100

1 × 105

1 × 108

Antimony (51)

       

Sb-122

4 × 10-1

4 × 10-1

1 × 102

1 × 104

Sb-124

6 × 10-1

6 × 10-1

1 × 101

1 × 106

Sb-125

2 × 100

1 × 100

1 × 102

1 × 106

Sb-126

4 × 10-1

4 × 10-1

1 × 101

1 × 105

Scandium (21)

       

Sc-44

5 × 10-1

5 × 10-1

1 × 101

1 × 105

Sc-46

5 × 10-1

5 × 10-1

1 × 101

1 × 106

Sc-47

1 × 101

7 × 10-1

1 × 102

1 × 106

Sc-48

3 × 10-1

3 × 10-1

1 × 101

1 × 105

Selenium (34)

       

Se-75

3 × 100

3 × 100

1 × 102

1 × 106

Se-79

4 × 101

2 × 100

1 × 104

1 × 107

Silicon (14)

       

Si-31

6 × 10-1

6 × 10-1

1 × 103

1 × 106

Si-32

4 × 101

5 × 10-1

1 × 103

1 × 106

Samarium (62)

       

Sm-145

1 × 101

1 × 101

1 × 102

1 × 107

Sm-147

Unlimited

Unlimited

1 × 101

1 × 104

Sm-151

4 × 101

1 × 101

1 × 104

1 × 108

Sm-153

9 × 100

6 × 10-1

1 × 102

1 × 106

Tin (50)

       

Sn-113 (a)

4 × 100

2 × 100

1 × 103

1 × 107

Sn-117m

7 × 100

4 × 10-1

1 × 102

1 × 106

Sn-119m

4 × 101

3 × 101

1 × 103

1 × 107

Radionuclide
(atomic number)

A1

 

(TBq)

A2

 

(TBq)

Activity concentration limit for exempt material

(Bq/g)

Activity limit for an exempt consignment (Bq)

Sn-121m (a)

4 × 101

9 × 10-1

1 × 103

1 × 107

Sn-123

8 × 10-1

6 × 10-1

1 × 103

1 × 106

Sn-125

4 × 10-1

4 × 10-1

1 × 102

1 × 105

Sn-126 (a)

6 × 10-1

4 × 10-1

1 × 101

1 × 105

Strontium (38)

       

Sr-82 (a)

2 × 10-1

2 × 10-1

1 × 101

1 × 105

Sr-85

2 × 100

2 × 100

1 × 102

1 × 106

Sr-85m

5 × 100

5 × 100

1 × 102

1 × 107

Sr-87m

3 × 100

3 × 100

1 × 102

1 × 106

Sr-89

6 × 10-1

6 × 10-1

1 × 103

1 × 106

Sr-90 (a)

3 × 10-1

3 × 10-1

1 × 10(b)

1 × 10(b)

Sr-91 (a)

3 × 10-1

3 × 10-1

1 × 101

1 × 105

Sr-92 (a)

1 × 100

3 × 10-1

1 × 101

1 × 106

Tritium (1)

       

T(H-3)

4 × 101

4 × 101

1 × 106

1 × 109

Tantalum (73)

       

Ta-178(long-lived)

1 × 100

8 × 10-1

1 × 101

1 × 106

Ta-179

3 × 101

3 × 101

1 × 103

1 × 107

Ta-182

9 × 10-1

5 × 10-1

1 × 101

1 × 104

Terbium (65)

       

Tb-157

4 × 101

4 × 101

1 × 104

1 × 107

Tb-158

1 × 100

1 × 100

1 × 101

1 × 106

Tb-160

1 × 100

6 × 10-1

1 × 101

1 × 106

Technetium (43)

       

Tc-95m (a)

2 × 100

2 × 100

1 × 101

1 × 106

Tc-96

4 × 10-1

4 × 10-1

1 × 101

1 × 106

Tc-96m (a)

4 × 10-1

4 × 10-1

1 × 103

1 × 107

Tc-97

Unlimited

Unlimited

1 × 103

1 × 108

Tc-97m

4 × 101

1 × 100

1 × 103

1 × 107

Tc-98

8 × 10-1

7 × 10-1

1 × 101

1 × 106

Tc-99

4 × 101

9 × 10-1

1 × 104

1 × 107

Tc-99m

1 × 101

4 × 100

1 × 102

1 × 107

Tellurium (52)

       

Radionuclide
(atomic number)

A1

 

(TBq)

A2

 

(TBq)

Activity concentration limit for exempt material

(Bq/g)

Activity limit for an exempt consignment (Bq)

Te-121

2 × 100

2 × 100

1 × 101

1 × 106

Te-121m

5 × 100

3 × 100

1 × 102

1 × 106

Te-123m

8 × 100

1 × 100

1 × 102

1 × 107

Te-125m

2 × 101

9 × 10-1

1 × 103

1 × 107

Te-127

2 × 101

7 × 10-1

1 × 103

1 × 106

Te-127m (a)

2 × 101

5 × 10-1

1 × 103

1 × 107

Te-129

7 × 10-1

6 × 10-1

1 × 102

1 × 106

Te-129m (a)

8 × 10-1

4 × 10-1

1 × 103

1 × 106

Te-131m (a)

7 × 10-1

5 × 10-1

1 × 101

1 × 106

Te-132 (a)

5 × 10-1

4 × 10-1

1 × 102

1 × 107

Thorium (90)

       

Th-227

1 × 101

5 × 10-3

1 × 101

1 × 104

Th-228 (a)

5 × 10-1

1 × 10-3

1 × 10(b)

1 × 10(b)

Th-229

5 × 100

5 × 10-4

1 × 10(b)

1 × 10(b)

Th-230

1 × 101

1 × 10-3

1 × 100

1 × 104

Th-231

4 × 101

2 × 10-2

1 × 103

1 × 107

Th-232

Unlimited

Unlimited

1 × 101

1 × 104

Th-234 (a)

3 × 10-1

3 × 10-1

1 × 10(b)

1 × 10(b)

Th(nat)

Unlimited

Unlimited

1 × 10(b)

1 × 10(b)

Titanium (22)

       

Ti-44 (a)

5 × 10-1

4 × 10-1

1 × 101

1 × 105

Thallium (81)

       

Tl-200

9 × 10-1

9 × 10-1

1 × 101

1 × 106

Tl-201

1 × 101

4 × 100

1 × 102

1 × 106

Tl-202

2 × 100

2 × 100

1 × 102

1 × 106

Tl-204

1 × 101

7 × 10-1

1 × 104

1 × 104

Thulium (69)

       

Tm-167

7 × 100

8 × 10-1

1 × 102

1 × 106

Tm-170

3 × 100

6 × 10-1

1 × 103

1 × 106

Tm-171

4 × 101

4 × 101

1 × 104

1 × 108

Uranium (92)

       

U-230 (fast lung absorption) (a)(d)

4 × 101

1 × 10-1

1 × 10(b)

1 × 10(b)

U-230 (medium lung absorption) (a)(e)

4 × 101

4 × 10-3

1 × 101

1 × 104

Radionuclide
(atomic number)

A1

 

(TBq)

A2

 

(TBq)

Activity concentration limit for exempt material

(Bq/g)

Activity limit for an exempt consignment (Bq)

U-230 (slow lung absorption) (a)(f)

3 × 101

3 × 10-3

1 × 101

1 × 104

U-232 (fast lung absorption) (d)

4 × 101

1 × 10-2

1 × 10(b)

1 × 10(b)

U-232 (medium lung absorption) (e)

4 × 101

7 × 10-3

1 × 101

1 × 104

U-232 (slow lung absorption) (f)

1 × 101

1 × 10-3

1 × 101

1 × 104

U-233 (fast lung absorption) (d)

4 × 101

9 × 10-2

1 × 101

1 × 104

U-233 (medium lung absorption) (e)

4 × 101

2 × 10-2

1 × 102

1 × 105

U-233 (slow lung absorption) (f)

4 × 101

6 × 10-3

1 × 101

1 × 105

U-234 (fast lung absorption) (d)

4 × 101

9 × 10-2

1 × 101

1 × 104

U-234 (medium lung absorption) (e)

4 × 101

2 × 10-2

1 × 102

1 × 105

U-234 (slow lung absorption) (f)

4 × 101

6 × 10-3

1 × 101

1 × 105

U-235 (all lung absorption types) (a)(d)(e)(f)

Unlimited

Unlimited

1 × 10(b)

1 × 10(b)

U-236 (fast lung absorption) (d)

Unlimited

Unlimited

1 × 101

1 × 104

U-236 (medium lung absorption) (e)

4 × 101

2 × 10-2

1 × 102

1 × 105

U-236 (slow lung absorption) (f)

4 × 101

6 × 10-3

1 × 101

1 × 104

U-238 (all lung absorption types) (d)(e)(f)

Unlimited

Unlimited

1 × 10(b)

1 × 10(b)

U (nat)

Unlimited

Unlimited

1 × 10(b)

1 × 10(b)

U (enriched to 20% or less) (g)

Unlimited

Unlimited

1 × 100

1 × 103

U (dep)

Unlimited

Unlimited

1 × 100

1 × 103

Vanadium (23)

       

V-48

4 × 10-1

4 × 10-1

1 × 101

1 × 105

V-49

4 × 101

4 × 101

1 × 104

1 × 107

Tungsten (74)

       

W-178 (a)

9 × 100

5 × 100

1 × 101

1 × 106

W-181

3 × 101

3 × 101

1 × 103

1 × 107

W-185

4 × 101

8 × 10-1

1 × 104

1 × 107

W-187

2 × 100

6 × 10-1

1 × 102

1 × 106

W-188 (a)

4 × 10-1

3 × 10-1

1 × 102

1 × 105

Xenon (54)

       

Xe-122 (a)

4 × 10-1

4 × 10-1

1 × 102

1 × 109

Xe-123

2 × 100

7 × 10-1

1 × 102

1 × 109

Xe-127

4 × 100

2 × 100

1 × 103

1 × 105

Xe-131m

4 × 101

4 × 101

1 × 104

1 × 104

Xe-133

2 × 101

1 × 101

1 × 103

1 × 104

Radionuclide
(atomic number)
A1
(TBq)
A2
(TBq)

Activity concentration limit for exempt material

(Bq/g)

Activity limit for an exempt consignment (Bq)

Xe-135

3 × 100

2 × 100

1 × 103

1 × 1010

Yttrium (39)

       

Y-87 (a)

1 × 100

1 × 100

1 × 101

1 × 106

Y-88

4 × 10-1

4 × 10-1

1 × 101

1 × 106

Y-90

3 × 10-1

3 × 10-1

1 × 103

1 × 105

Y-91

6 × 10-1

6 × 10-1

1 × 103

1 × 106

Y-91m

2 × 100

2 × 100

1 × 102

1 × 106

Y-92

2 × 10-1

2 × 10-1

1 × 102

1 × 105

Y-93

3 × 10-1

3 × 10-1

1 × 102

1 × 105

Ytterbium (70)

       

Yb-169

4 × 100

1 × 100

1 × 102

1 × 107

Yb-175

3 × 101

9 × 10-1

1 × 103

1 × 107

Zinc (30)

       

Zn-65

2 × 100

2 × 100

1 × 101

1 × 106

Zn-69

3 × 100

6 × 10-1

1 × 104

1 × 106

Zn-69m (a)

3 × 100

6 × 10-1

1 × 102

1 × 106

Zirconium (40)

       

Zr-88

3 × 100

3 × 100

1 × 102

1 × 106

Zr-93

Unlimited

Unlimited

1 × 10(b)

1 × 10(b)

Zr-95 (a)

2 × 100

8 × 10-1

1 × 101

1 × 106

Zr-97 (a)

4 × 10-1

4 × 10-1

1 × 10(b)

1 × 10(b)

 

(a) A1 and/or A2 values for these parent radionuclides include contributions from their progeny
with half-lives less than 10 days, as listed in the following:
 
Mg-28 Al-28
Ar-42 K-42
Ca-47 Sc-47
Ti-44 Sc-44
Fe-52 Mn-52m
Fe-60 Co-60m
Zn-69m Zn-69
Ge-68 Ga-68
Rb-83 Kr-83m
Sr-82 Rb-82
Sr-90 Y-90
Sr-91 Y-91m
Sr-92 Y-92
Y-87 Sr-87m
Zr-95 Nb-95m
Zr-97 Nb-97m, Nb-97
Mo-99 Tc-99m
Tc-95m Tc-95
Tc-96m Tc-96
Ru-103 Rh-103m
Ru-106 Rh-106
Pd-103 Rh-103m
Ag-108m Ag-108
Ag-110m Ag-110
Cd-115 In-115m
In-114m In-114
Sn-113 In-113m
Sn-121m Sn-121
Sn-126 Sb-126m
Te-118 Sb-118
Te-127m Te-127
Te-129m Te-129
Te-131m Te-131
Te-132 I-132
I-135 Xe-135m
Xe-122 I-122
Cs-137 Ba-137m
Ba-131 Cs-131
Ba-140 La-140
Ce-144 Pr-144m, Pr-144
Pm-148m Pm-148
Gd-146 Eu-146
Dy-166 Ho-166
Hf-172 Lu-172
W-178 Ta-178
W-188 Re-188
Re-189 Os-189m
Os-194 Ir-194
Ir-189 Os-189m
Pt-188 Ir-188
Hg-194 Au-194
Hg-195m Hg-195
Pb-210 Bi-210
Pb-212 Bi-212, Tl-208, Po-212
Bi-210m Tl-206
Bi-212 Tl-208, Po-212
At-211 Po-211
Rn-222 Po-218, Pb-214, At-218, Bi-214, Po-214
Ra-223 Rn-219, Po-215, Pb-211, Bi-211, Po-211, Tl-207
Ra-224 Rn-220, Po-216, Pb-212, Bi-212, Tl-208, Po-212
Ra-225 Ac-225, Fr-221, At-217, Bi-213, Tl-209, Po-213, Pb-209
Ra-226 Rn-222, Po-218, Pb-214, At-218, Bi-214, Po-214
Ra-228 Ac-228
Ac-225 Fr-221, At-217, Bi-213, Tl-209, Po-213, Pb-209
Ac-227 Fr-223
Th-228 Ra-224, Rn-220, Po-216, Pb-212, Bi-212, Tl-208, Po-212
Th-234 Pa-234m, Pa-234
Pa-230 Ac-226, Th-226, Fr-222, Ra-222, Rn-218, Po-214
U-230 Th-226, Ra-222, Rn-218, Po-214
U-235 Th-231
Pu-241 U-237
Pu-244 U-240, Np-240m
Am-242m Am-242, Np-238
Am-243 Np-239
Cm-247 Pu-243
Bk-249 Am-245
Cf-253 Cm-249
(b) Parent nuclides and their progeny included in secular equilibrium are listed in the following:
Sr-90 Y-90
Zr-93 Nb-93m
Zr-97 Nb-97
Ru-106 Rh-106
Ag-108m Ag-108
Cs-137 Ba-137m
Ce-144 Pr-144
Ba-140 La-140
Bi-212 Tl-208 (0.36), Po-212 (0.64)
Pb-210 Bi-210, Po-210
Pb-212 Bi-212, Tl-208 (0.36), Po-212 (0.64)
Rn-222 Po-218, Pb-214, Bi-214, Po-214
Ra-223 Rn-219, Po-215, Pb-211, Bi-211, Tl-207
Ra-224 Rn-220, Po-216, Pb-212, Bi-212, Tl-208 (0.36), Po-212 (0.64)
Ra-226 Rn-222, Po-218, Pb-214, Bi-214, Po-214, Pb-210, Bi-210, Po-210
Ra-228 Ac-228
Th-228 Ra-224, Rn-220, Po-216, Pb212, Bi-212, Tl208 (0.36), Po-212 (0.64)
Th-229 Ra-225, Ac-225, Fr-221, At-217, Bi-213, Po-213, Pb-209
Th-nat Ra-228, Ac-228, Th-228, Ra-224, Rn-220, Po-216, Pb-212,
Bi-212, l208 (0.36), Po-212 (0.64)
Th-234 Pa-234m
U-230 Th-226, Ra-222, Rn-218, Po-214
U-232 Th-228, Ra-224, Rn-220, Po-216, Pb-212, Bi-212, Tl-208 (0.36),
Po-212 (0.64)
U-235 Th-231
U-238 Th-234, Pa-234m
U-nat Th-234, Pa-234m, U-234, Th-230, Ra-226, Rn-222, Po-218, Pb-214,
Bi-214, Po-214, Pb-210, Bi-210, Po-210
Np-237 Pa-233
Am-242m Am-242
Am-243 Np-239
(c) The quantity may be determined from a measurement of the rate of decay or a measurement of
the radiation level at a prescribed distance from the source.
(d) These values apply only to compounds of uranium that take the chemical form of UF6, UO2F2
and UO2(NO3)2 in both normal and accident conditions of carriage.
(e) These values apply only to compounds of uranium that take the chemical form of UO3, UF4,
UCl4 and hexavalent compounds in both normal and accident conditions of carriage.
(f) These values apply to all compounds of uranium other than those specified in (d) and (e)
above.
(g) These values apply to unirradiated uranium only.

 

For individual radionuclides:
(a) Which are not listed in Table 2.2.7.2.2.1 the determination of the basic radionuclide values
referred to in 2.2.7.2.2.1 shall require multilateral approval. For these radionuclides, activity
concentration limits for exempt material and activity limits for exempt consignments shall be
calculated in accordance with the principles established in the International Basic Safety
Standards for Protection against Ionizing Radiation and for the Safety of Radiation Sources,
Safety Series No.115, IAEA, Vienna (1996). It is permissible to use an A2 value calculated
using a dose coefficient for the appropriate lung absorption type as recommended by the
International Commission on Radiological Protection, if the chemical forms of each
radionuclide under both normal and accident conditions of carriage are taken into
consideration. Alternatively, the radionuclide values in Table 2.2.7.2.2.2 may be used without
obtaining competent authority approval;
(b) In instruments or articles in which the radioactive material is enclosed or is included as a
component part of the instrument or other manufactured article and which meet 2.2.7.2.4.1.3
(c), alternative basic radionuclide values to those in Table 2.2.7.2.2.1 for the activity limit for
an exempt consignment are permitted and shall require multilateral approval. Such alternative
activity limits for an exempt consignment shall be calculated in accordance with the principles
set out in the International Basic Safety Standards for Protection against Ionizing Radiation and
for the Safety of Radiation Sources, Safety Series No.115, IAEA, Vienna (1996).
Table 2.2.7.2.2.2: Basic radionuclide values for unknown radionuclides or mixtures
 

 

Radioactive contents

 

A1

 

A2

Activity concentration limit for exempt material

 

Activity limit for exempt consignments

 

(TBq)

(TBq)

(Bq/g)

(Bq)

Only beta or gamma emitting nuclides are known to be present

0.1

0.02

 101

 104

Alpha emitting nuclides but no neutron emitters are known to be present

0.2

 10-5

 10-1

 103

Neutron emitting nuclides are known to be present or no relevant data are available

0.001

 10-5

 10-1

 103

 

In the calculations of A1 and A2 for a radionuclide not in Table 2.2.7.2.2.1, a single radioactive decay
chain in which the radionuclides are present in their naturally occurring proportions, and in which no
daughter nuclide has a half-life either longer than 10 days or longer than that of the parent nuclide,
shall be considered as a single radionuclide; and the activity to be taken into account and the A1 or A2
value to be applied shall be those corresponding to the parent nuclide of that chain. In the case of
radioactive decay chains in which any daughter nuclide has a half-life either longer than 10 days or
greater than that of the parent nuclide, the parent and such daughter nuclides shall be considered as
mixtures of different nuclides.

For mixtures of radionuclides, the basic radionuclide values referred to in 2.2.7.2.2.1 may be
determined as follows:
 
where,
f(i) is the fraction of activity or activity concentration of radionuclide i in the mixture;
X(i) is the appropriate value of A1 or A2, or the activity concentration limit for exempt material or
the activity limit for an exempt consignment as appropriate for the radionuclide i; and
Xm is the derived value of A1 or A2, or the activity concentration limit for exempt material or the
activity limit for an exempt consignment in the case of a mixture.

 

When the identity of each radionuclide is known but the individual activities of some of the
radionuclides are not known, the radionuclides may be grouped and the lowest radionuclide value, as
appropriate, for the radionuclides in each group may be used in applying the formulas in 2.2.7.2.2.4
and 2.2.7.2.4.4. Groups may be based on the total alpha activity and the total beta/gamma activity
when these are known, using the lowest radionuclide values for the alpha emitters or beta/gamma
emitters, respectively.

For individual radionuclides or for mixtures of radionuclides for which relevant data are not available,
the values shown in Table 2.2.7.2.2.2 shall be used.

Determination of other material characteristics

Low specific activity (LSA) material

(Reserved)

LSA material shall be in one of three groups:
(a) LSA-I
(i) uranium and thorium ores and concentrates of such ores, and other ores containing
naturally occurring radionuclides;
(ii) natural uranium, depleted uranium, natural thorium or their compounds or mixtures, that
are unirradiated and in solid or liquid form;
(iii) radioactive material for which the A2 value is unlimited. Fissile material may be
included only if excepted under 2.2.7.2.3.5;
(iv) other radioactive material in which the activity is distributed throughout and the
estimated average specific activity does not exceed 30 times the values for activity
concentration specified in 2.2.7.2.2.1 to 2.2.7.2.2.6. Fissile material may be included
only if excepted under 2.2.7.2.3.5;
(b) LSA-II
(i) water with tritium concentration up to 0.8 TBq/l;
(ii) other material in which the activity is distributed throughout and the estimated average
specific activity does not exceed 10-4 A2/g for solids and gases, and 10-5 A2/g for
liquids;
(c) LSA-III - Solids (e.g. consolidated wastes, activated materials), excluding powders, that meet
the requirements of 2.2.7.2.3.1.3, in which:
(i) the radioactive material is distributed throughout a solid or a collection of solid objects,
or is essentially uniformly distributed in a solid compact binding agent (such as
concrete, bitumen and ceramic);
(ii) the radioactive material is relatively insoluble, or it is intrinsically contained in a
relatively insoluble matrix, so that, even under loss of packaging, the loss of radioactive
material per package by leaching when placed in water for seven days would not exceed
0.1 A2; and
(iii) the estimated average specific activity of the solid, excluding any shielding material,
does not exceed 2 × 10-3 A2/g.

LSA-III material shall be a solid of such a nature that if the entire contents of a package were
subjected to the test specified in 2.2.7.2.3.1.4 the activity in the water would not exceed 0.1 A2.

LSA-III material shall be tested as follows:
A solid material sample representing the entire contents of the package shall be immersed for 7 days
in water at ambient temperature. The volume of water to be used in the test shall be sufficient to
ensure that at the end of the 7 day test period the free volume of the unabsorbed and unreacted water
remaining shall be at least 10% of the volume of the solid test sample itself. The water shall have an
initial pH of 6-8 and a maximum conductivity of 1 mS/m at 20 °C. The total activity of the free
volume of water shall be measured following the 7 day immersion of the test sample.

Demonstration of compliance with the performance standards in 2.2.7.2.3.1.4 shall be in accordance
with 6.4.12.1 and 6.4.12.2.

Surface contaminated object (SCO)
SCO is classified in one of two groups:
(a) SCO-I: A solid object on which:
(i) the non-fixed contamination on the accessible surface averaged over 300 cm2 (or the
area of the surface if less than 300 cm2) does not exceed 4 Bq/cm2 for beta and gamma
emitters and low toxicity alpha emitters, or 0.4 Bq/cm2 for all other alpha emitters; and
(ii) the fixed contamination on the accessible surface averaged over 300 cm2 (or the area of
the surface if less than 300 cm2) does not exceed 4 × 104 Bq/cm2 for beta and gamma
emitters and low toxicity alpha emitters, or 4 × 103 Bq/cm2 for all other alpha emitters;
and
(iii) the non-fixed contamination plus the fixed contamination on the inaccessible surface
averaged over 300 cm2 (or the area of the surface if less than 300 cm2) does not exceed
4 × 104 Bq/cm2 for beta and gamma emitters and low toxicity alpha emitters, or
4 × 103 Bq/cm2 for all other alpha emitters;
(b) SCO-II: A solid object on which either the fixed or non-fixed contamination on the surface
exceeds the applicable limits specified for SCO-I in (a) above and on which:
(i) the non-fixed contamination on the accessible surface averaged over 300 cm2 (or the
area of the surface if less than 300 cm2) does not exceed 400 Bq/cm2 for beta and
gamma emitters and low toxicity alpha emitters, or 40 Bq/cm2 for all other alpha
emitters; and
(ii) the fixed contamination on the accessible surface, averaged over 300 cm2 (or the area of
the surface if less than 300 cm2) does not exceed 8 × 105 Bq/cm2 for beta and gamma
emitters and low toxicity alpha emitters, or 8 × 104 Bq/cm2 for all other alpha emitters;
and
(iii) the non-fixed contamination plus the fixed contamination on the inaccessible surface
averaged over 300 cm2 (or the area of the surface if less than 300 cm2) does not exceed
8 × 105 Bq/cm2 for beta and gamma emitters and low toxicity alpha emitters, or
8 × 104 Bq/cm2 for all other alpha emitters.

 

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