Thông tư 24/2010/TT-BKHCN

Circular No. 24/2010/TT-BKHCN of December 29, 2010, issuing and implementing of "National Technical Regulations of radiation safety - categorization and classifying radioactive source

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  5. Thông tư 24/2010/TT-BKHCN

Nội dung toàn văn Circular No. 24/2010/TT-BKHCN issuing and implementing of national technical

MINISTRY OF SCIENCE AND TECHNOLOGY
--------

SOCIALIST REPUBLIC OF VIET NAM
Independence - Freedom – Happiness
----------------

No.: 24/2010/TT-BKHCN

Ha Noi, December 29, 2010

 

CIRCULAR

ISSUING AND IMPLEMENTING OF "NATIONAL TECHNICAL REGULATIONS OF RADIATION SAFETY - CATEGORIZATION AND CLASSIFYING RADIOACTIVE SOURCE"

Pursuant to the Atomic Energy Law of June 3, 2008;

Pursuant to the Law on Standards and Technical Regulations of June 29, 2006 and Decree No. 127/2007/ND-CP of August 1, 2007 of the Government detailing the implementation of a number of articles of the Law on Standards and Technical Regulations;

Pursuant to Decree No. 28/2008/ND-CP of March 14, 2008 of the Government defining the functions, tasks, powers and organizational structure of the Ministry of Science and Technology;,

At the proposal of the Director of Vietnam Agency for Radiation and Nuclear Safety & Control;
Minister of Science and Technology hereby stipulates:

Article 1. Issuing together with this Circular, "National Technical Regulation on Radiation Safety - Categorization and classifying radioactive source".

Article 2. This Circular takes effect after 45 days from its signing date and annuls Decision No. 17/2007/QD-BKHCN of August 31, 2007 of the Minister of Science and Technology on the issuance of regulation on categorization of radioactive source as required ensuring security.

Article 3. Director of VARANS, the heads of agencies, organizations and individuals concerned shall implement this Circular.

Any difficulties arising during the course of implementation should be promptly reported to the Ministry of Science and Technology for study, amendment and supplementation.

 

 

 

PP. MINISTER
DEPUTY MINISTER




Le Đinh Tien

 

QCVN 6: 2010/BKHCN

NATIONAL TECHNICAL REGULATION

ON RADIATION SAFETY - CATEGORIZATION AND CLASSIFICATION OF RADIOACTIVE SOURCE

Introduction

QCVN 6: 2010/BKHCN was written by Vietnam Agency for Radiation and Nuclear Safety & Control and issued by the Ministry of Science and Technology under Circular No. 24/2010/TT-BKHCN dated December 29, 2010.

 

NATIONAL TECHNICAL REGULATION

ON RADIATION SAFETY - CATEGORIZATION AND CLASSIFICATION OF RADIOACTIVE SOURCE

1. GENERAL REGULATION

1.1. Scope of adjustment

1.1.1. This Regulation specifies the categorization and classification of radioactive source.

1.1.2. This Regulation does not specify the categorization and classification of radioactive source in the management of radioactive waste.

1.2. Subject of application

This regulation applies to organizations and individuals having radioactive source or conducting activities related to radioactive source.

2. TECHNICAL REGULATION

2.1. Categorization of radioactive source

2.1.1. The radioactive sources are categorized based on the activity of the radioactive sources, the dangerous characteristics of the radioactive isotopes of radioactive sources and situations of use of radioactive sources. The radioactive sources are categorized into five groups from group 1 to 5 as by way of categorization specified at Point 2.1.2 or 2.1.3.

2.1.2. For radioactive source used in conventional radiation work, the way of categorization shall be based on the provisions of Annex I to this Regulation.

2.1.3. For radioactive source which is not listed in Annex I to this Regulation, the categorization shall be based on the value called the ratio of radioactivity determined in accordance with the guidance in Clause 2.2 as follows:

2.1.3.1. Group 1 consists of a radioactive source or combination of radioactive sources with the ratio of radioactivity greater than or equal to 1000.

2.1.3.2. Group 2 consists of radioactive source or combination of radioactive sources with the ratio of radioactivity greater than or equal to 10 and less than 1000.

2.1.3.3. Group 3 consists of radioactive source or combination of radioactive sources with the ratio of radioactivity greater than or equal to 1 and less than 10.

2.1.3.4. Group 4 consists of radioactive source or combination of radioactive sources with the ratio of radioactivity greater than or equal to 0.01 and less than 1.

2.1.3.5. Group 5 consists of radioactive source or combination of radioactive sources with the ratio of radioactivity less than 0.01.

2.1.4. Tập hợp nguồn phóng xạ là tập hợp gồm nhiều nguồn phóng xạ đơn lẻ được sử dụng đồng thời trong một thiết bị; được lưu giữ trong một kho; được

Combination of radioactive sources is a combination of many single radioactive sources used simultaneously in one device; stored in a warehouse; transported, imported and exported in a shipment; existing at a place of production and processing of radioactive substance.

2.2. Tỷ số hoạt độ phóng xạ  Ratio of radioactivity

Tỷ số hoạt độ phóng xạ được xác định như sau:

The ratio of radioactivity is determined as follows:

2.2.1. For a single radioactive source

Ratio of radioactivity =

In which:

- A is the activity of the radioactive source at the time of review calculated in TBq.

- D is the characteristic value for dangerous levels of radioactive isotope of radioactive source, calculated in TBq. D value is specified in Annex II to this Regulation.

2.2.2. For the combination of radioactive sources:

Ratio of radioactivity =

In which:

- n is the number of radioactive isotopes in the radioactive source.

- Ai,n is the activity of a single radioactive source i generated from the radioactive isotope n in the combination of radioactive sources under review calculated in TBq.

- Dn is the characteristic value D for dangerous levels of radioactive isotope n, calculated in TBq. Value D is specified in Annex II to this Regulation.

2.3. Categorization of radioactive source

2.3.1. Radioactive source is categorized into three types including the above average dangerous level, average dangerous level and below average dangerous level as prescribed at Points 2.3.2, 2.3.3 and 2.3.4.

2.3.2. Radioactive source of the type with above average dangerous level includes the source of group 1 and group 2 specified in Clause 2.1.

2.3.3. Radioactive source of the type with average dangerous level include the source of group 3 specified in Clause 2.1.

2.3.4. Radioactive source of the type with below average dangerous level include the source of group 4 and group 5 specified in Clause 2.1.

3. REGULATION ON MANAGEMENT AND ORGANIZATION OF IMPLEMENTATION

3.1. Organizations and individuals having radioactive source or conducting activities related to radioactive source must apply the provisions of this Technical Regulation to specify group and type of the radioactive source as a basis for implementation of regulations of the law on safety and security respectively.

3.2. Vietnam Agency for Radiation and Nuclear Safety & Control shall guide and inspect the implementation of this technical Regulation.

 

ANNEX I

PHÂN NHÓM ĐỐI VỚI NGUỒN PHÓNG XẠ DÙNG TRONG CÁC CÔNG VIỆC BỨC XẠ THÔNG THƯỜNG CATEGORIZATION FOR RADIOACTIVE SOURCE USED IN GENERAL RADIATION WORK

Source

Radioisotope

Activity (TBq)

Minimum

Typical

Maximum

 

Group 1

 

 

 

Source used in radioactive thermoelectric generator (RTG)

Sr-90

3,3 x 102

7,4 x 102

2,5 x 104

Pu-238

1,0 x 100

1,0 x 101

1,0 x 101

Source used in equipment of radiation sterilization and material handling

Co-60

1,9 x 102

1,5 x 105

5,6 x 105

Cs-137

1,9 x 102

1,1 x 105

1,9 x 105

Source used in self-shielding gamma irradiation equipment

Cs-137

9,3 x 101

5,6 x 102

1,6 x 103

Co-60

5,6 x 101

9,3 x 102

1,9 x 103

Source used in self-shielding gamma irradiation equipment for irridation of blood/tissue

Cs-137

3,7 x 101

2,6 x 102

4,4 x 102

Co-60

5,6 x 101

8,9 x 101

1,1 x 102

Sources used in multi-beam teletherapy devices (gamma knife)

Co-60

1,5 x 102

2,6 x 102

3,7 x 102

Source of teletherapy

Co-60

3,7 x 101

1,5 x 102

5,6 x 102

Cs-137

1,9 x 101

1,9 x 101

5,6 x 101

 

Group 2

 

 

 

Sources used in industrial radiography equipment

Co-60

4,1 x 10-1

2,2 x 100

7,4 x 100

lr-192

1,9 x 10-1

3,7 x 100

7,4 x 100

Se-75

3,0x 100

3,0 x 100

3,0 x 100

Yb-169

9,3 x 10-2

1,9 x 10-1

3,7 x 10-1

Tm-170

7,4 x 10-1

5,6 x 100

7,4 x 100

Source of brachytherapy- high/average dose rate

Co-60

1,9 x 10-1

3,7 x 10-1

7,4 x 10-1

Cs-137

1,1 x 10-1

1,1 x 10-1

3,0 x 10-1

lr-192

1,1 x 10-1

2,2 x 10-1

4,4 x 10-1

Source of calibration with high activity

Co-60

2,0 x 10-2

7,4 x 10-1

1,2 x 100

Cs-137

5,6 x 10-2

2,2 x 100

1,1 x 102

 

Group 3

 

 

 

Sources used in the level  meter

Cs-137

3,7 x 10-2

1,9 x 10-1

1,9 x 10-1

Co-60

3,7 x 10-3

1,9 x 10-1

3,7 x 10-1

Source of calibration with average activity

Am-241

1,9 x 10-1

3,7 x 10-1

7,4 x 10-1

Pu-239/Be

7,4 x 10-2

1,1 x 10-1

3,7 x 10-1

Source used in nuclear instrument on conveyor belt

Cs-137

1,1 x 10-4

1,1 x 10-1

1,5 x 100

Cf-252

1,4 x 10-3

1,4 x 10-3

1,4 x 10-3

Source used in nuclear instrument for blast furnace.

Co-60

3,7 x 10-2

3,7 x 10-2

7,4 x 10-2

Source used in nuclear instrument of dredger

Co-60

9,3 x 10-3

2,8 x 10-2

9,6 x 10-2

Cs-137

7,4 x 10-3

7,4 x 10-2

3,7 x 10-1

Source used in roller meter

Cs-137

7,4 x 10-2

7,4 x 10-2

1,9 x 10-1

Source for startup of research reactor

Am-241/Be

7,4 x 10-2

7,4 x 10-2

1,9 x 10-1

Source for geophysical measurement of well

Am-241/Be

1,9 x 10-2

7,4 x 10-1

8,5 x 10-1

Cs-137

3,7 x 10-2

7,4 x 10-2

7,4 x 10-2

Cf-252

1,0 x 10-3

1,1 x 10-3

4,1 x 10-3

Sources used for cardiac devices

Pu-238

1,1 x 10-1

1,1 x 10-1

3,0 x 10-1

 

Group 4

 

 

 

Source of brachytherapy - low dose rate

Cs-137

3,7 x 10-4

1,9 x 10-2

2,6 x 10-2

Ra-226

1,9 x 10-4

5,6 x 10-4

1,9 x 10-3

l-125

1,5 x 10-3

1,5 x 10-3

1,5 x 10-3

Ir-192

7,4 x 10-4

1,9 x 10-2

2,8 x 10-2

Au-198

3,0 x 10-3

3,0 x 10-3

3,0 x 10-3

Cf-252

3,1 x 10-3

3,1 x 10-3

3,1 x 10-3

Source used in thickness meter

Kr-85

1,9 x 10-3

3,7 x 10-2

3,7 x 10-2

Sr-90

3,7 x 10-4

3,7 x 10-3

7,4 x 10-3

Am-241

1,1 x 10-2

2,2 x 10-2

2,2 x 10-2

Pm-147

7,4 x 10-5

1,9 x 10-3

1,9 x 10-3

Cm-244

7,4 x 10-3

1,5 x 10-2

3,7 x 10-2

Source used in level meter

Am-241

4,4 x 10-4

2,2 x 10-3

4,4 x 10-3

Cs-137

1,9 x 10-3

2,2 x 10-3

2,4 x 10-3

Co-60

1,9 x 10-4

8,7 x 10-4

1,9 x 10-2

Nguồn hiệu chuẩn có hoạt độ thấp Source of calibration with low activity

Sr-90

7,4 x 10-2

7,4 x 10-2

7,4 x 10-2

Nguồn dùng trong thiết bị đo độ ẩm Source used in moisture meter

Am-241/Be

1,9 x 10-3

1,9 x 10-3

3,7 x 10-3

Nguồn dùng trong thiết bị đo mật độ Source used in density meter

Cs-137

3,0 x 10-4

3,7 x 10-4

3,7 x 10-4

Nguồn dùng trong thiết bị đo độ chặt/độ ẩm nền đường Source used in density/moisture meter of roadbed

Am-241/Be

3,0 x 10-4

1,9 x 10-3

3,7 x 10-3

Cs-137

3,7 x 10-5

3,7 x 10-4

4,1 x 10-4

Ra-226

7,4 x 10-5

7,4 x 10-5

1,5 x 10-4

Cf-252

1,1 x 10-6

2,2 x 10-6

2,6 x 10-6

Nguồn dùng trong thiết bị đo mật độ xương Source used in bone densitometer

Cd-109

7,4 x 10-4

7,4 x 10-4

7,4 x 10-4

Gd-153

7,4 x 10-4

3,7 x 10-2

5,6 x 10-2

l-125

1,5 x 10-3

1,9 x 10-2

3,0 x 10-2

Am-241

1,0 x 10-3

5,0 x 10-3

1,0 x 10-2

Nguồn dùng trong thiết bị khử tĩnh điện Sources used in antistatic devices

Am-241

1,1 x 10-3

1,1 x 10-3

4,1 x 10-3

Po-210

1,1 x 10-3

1,1 x 10-3

4,1 x 10-3

Bò molipden Bovine Molybdenum

Mo-99

3,7 x 10-2

3,7 x 10-2

3,7 x 10-1

Nguồn hở dùng trong y học hạt nhân Open source used in nuclear medicine

l-131

3,7 x 10-3

3,7 x 10-3

7,4 x 10-3

P-32

2,2 x 10-3

2,2 x 10-2

2,2 x 10-2

 

Group 5

 

 

 

Nguồn dùng trong thiết bị phân tích huỳnh quang tia X

Source used in X-ray fluorescence analysis equipment

Fe-55

1,1 x 10-4

7,4 x 10-4

5,0 x 10-3

Cd-109

1,1 x 10-3

1,1 x 10-3

5,6 x 10-3

Co-57

5,6 x 10-4

9,3 x 10-4

1,5 x 10-3

Source used in Electron capture detector

Ni-63

1,9 x 10-4

3,7 x 10-4

7,4 x 10-4

H-3

1,9 x 10-3

9,3 x 10-3

1,1 x 10-2

Sources used in lightning protector

Am-241

4,8 x 10-5

4,8 x 10-5

4,8 x 10-4

Ra-226

2,6 x 10-7

1,1 x 10-6

3,0 x 10-8

H-3

7,4 x 10-3

7,4 x 10-3

7,4 x 10-3

Source of brachytherapy: eye pressure plate and permanently implanted dose rate source

Sr-90

7,4 x 10-4

9,3 x 10-4

1,5 x 10-3

Ru/Rh-106

8,1 x 10-6

2,2 x 10-5

2,2 x 10-5

Pd-103

1,1 x 10-3

1,1 x 10-3

1,1 x 10-3

PET Source of PET equipment testing

Ge-68

3,7 x 10-5

1,1 x 10-4

3,7 x 10-4

Sources used in the  mossbauer spectrometer

Co-57

1,9 x 10-4

1,9 x 10-3

3,7 x 10-3

Tritium target

H-3

1,1 x 10-1

2,6 x 10-1

1,1 x 100

Note:

- TBq: Symbol of Teta Becquerel, is the derivatives of the Becquerel (Bq). Bq is the unit for measuring the activity of radioactive source and 1 Bq = 1 disintegration / 1 second. TBq is related to the unit of measurement of other radioactivity as follows:

1TBq = 1012 Bq = 109 kBq = 106 MBq = 103 GBq

In which:

kBq is the symbol for kilo Becquerel.

MBq is the symbol of mega Becquerel

GBq is the symbol of Giga Becquerel.

1kCi = 103 Ci = 106 mCi = 109 mCi = 37 TBq

In which:

KCI is the symbol for kilogram curia.

mCi is the symbol for millimeter curia.

mCi is the symbol of microphone curia.

 

ANNEX II

CHARACTERISTIC VALUE FOR DANGEROUS LEVELS OF RADIOACTIVE ISOTOPE (D)

Radioactive isotope

Value D (TBq)

 

Radioactive isotope

Value D (TBq)

H-3

2x103

Sc-48

2 x 10-2

Be-7

1x100

Ti-44

3 x 10-2

Be-10

3x101

V-48

2 x 10-2

C-11

6x10-2

V-49

2 x 103

C-14

5x101

Cr-51

2 x 100

N-13

6x10-2

Mn-52

2 x 10-2

F-18

6x10-2

Mn-53

CL

Na-22

3x10-2

Mn-54

8 x 10-2

Na-24

2x10-2

Mn-56

4 x 10-2

Mg-28

2x10-2

Fe-52

2 x 10-2

Al-26

3x10-2

Fe-55

8 x 102

Si-31

1x101

Fe-59

6 x 10-2

Si-32

7x100

Fe-60

6 x 10-2

P-32

1x101

Co-55

3 x 10-2

P-33

2x102

Co-56

2 x 10-2

S-35

6x101

Co-57

7 x 10-1

Cl-36

2x101

Co-58

7 x 10-2

Cl-38

5x10-2

Co-58m

7 x 10-2

Ar-37

CL

Co-60

3 x 10-2

Ar-39

3x102

Ni-59

1 x 103

Ar-41

5x10-2

Ni-63

6 x 101

K-40

CL

Ni-65

1 x 10-1

K-42

2x10-1

Cu-64

3 x 10-1

K-43

7x10-2

Cu-67

7 x 10-1

Ca-41

CL

Zn-65

1 x 10-1

Ca-45

1x102

Zn-69

3 x 101

Ca-47

6x10-2

Zn-69m

2 x 10-1

Sc-44

3x10-2

Ga-67

5 x 10-1

Sc-46

3x10-2

Ga-68

7 x 10-2

Sc-47

7 x 10-1

Ga-72

3 x 10-2

Ge-68

7 x 10-2

Y-91m

1 x 10-1

Ge-71

1 x 103

Y-92

2 x 10-1

Ge-77

6 x 10-2

Y-93

6 x 10-1

As-72

4 x 10-2

Zr-88

2 x 10-2

As-73

4 x 101

Zr-93

CL

As-74

9 x 10-2

Zr-95

4 x 10-2

As-76

2 x 10-1

Zr-97

4 x 10-2

As-77

8 x 100

Nb-93m

3 x 102

Se-75

2 x 10-1

Nb-94

4 x 10-2

Se-79

2 x 102

Nb-95

9 x 10-2

Br-76

3 x 10-2

Nb-97

1 x 10-1

Br-77

2 x 10-1

Mo-93

3 x 102

Br-82

3 x 10-2

Mo-99

3 x 10-1

Kr-81

3 x 101

Tc-95m

1 x 10-1

Kr-85

3 x 101

Tc-96

3 x 10-2

Kr-85m

5 x 10-1

Tc-96m

3 x 10-2

Kr-87

9 x 10-2

Tc-97

CL

Rb-81

1 x 10-1

Tc-97m

4 x 101

Rb-83

1 x 10-1

Tc-98

5 x 10-2

Rb-84

7 x 10-2

Tc-99

3 x 101

Rb-86

7 x 10-1

Tc-99m

7 x 10-1

Rb-87

CL

Ru-97

3 x 10-1

Sr-82

6 x 10-2

Ru-103

1 x 10-1

Sr-85

1 x 10-1

Ru-105

8 x 10-2

Sr-85m

1 x 10-1

Ru-106

3 x 10-1

Sr-87m

2 x 10-1

Rh-99

1 x 10-1

Sr-89

2 x 101

Rh-101

3 x 10-1

Sr-90

1 x 100

Rh-102

3 x 10-2

Sr-91

6 x 10-2

Rh-102m

1 x 10-1

Sr-92

4 x 10-2

Rh-103m

9 x 102

Y-87

9 x 10-2

Rh-105

9 x 10-1

Y-88

3 x 10-2

Pd-103

9 x 101

Y-90

5 x 100

Pd-107

CL

Y-91

8 x 100

Pd-109

2 x 101

Ag-105

1 x 10-1

l-124

6 x 10-2

Ag-108m

4 x 10-2

l-125

2 x 10-1

Ag-110m

2 x 10-2

l-126

1 x 10-1

Ag-111

2 x 100

l-129

CL

Cd-109

2 x 101

l-131

2 x 10-1

Cd-113m

4 x 101

l-132

3 x 10-2

Cd-115

2 x 10-1

l-133

1 x 10-1

Cd-115m

3 x 100

l-134

3 x 10-2

In-111

2 x 10-1

l-135

4 x 10-2

In-113m

3 x 101

Xe-122

6 x 10-2

In-114m

8 x 10-1

Xe-123

9 x 10-2

In-115m

4 x 10-1

Xe-127

3 x 10-1

Sn-113

3x 10-1

Xe-131m

1 x 101

Sn-117m

5 x 10-1

Xe-133

3 x 100

Sn-119m

7 x 101

Xe-135

3 x 10-1

Sn-121m

7 x 101

Cs-129

3 x 10-1

Sn-123

7 x 100

Cs-131

2 x 101

Sn-125

1 x 10-1

Cs-132

1 x 10-1

Sn-126

3 x 10-2

Cs-134

4 x 10-2

Sb-122

1 x 10-1

Cs-134m

4 x 10-2

Sb-124

4 x 10-2

Cs-135

CL

Sb-125

2 x 10-1

Cs-136

3 x 10-2

Sb-126

2 x 10-2

Cs-137

1 x 10-1

Te-121

1 x 10-1

Ba-131

2 x 10-1

Te-121m

1 x 10-1

Ba-133

2 x 10-1

Te-123m

6 x 10-1

Ba-133m

3 x 10-1

Te-125m

1 x 101

Ba-140

3 x 10-2

Te-127

1 x 101

La-137

2 x 101

Te-127m

3 x 100

La-140

3 x 10-2

Te-129

1 x 100

Ce-139

6 x 10-1

Te-129m

1 x 100

Ce-141

1 x 100

Te-131m

4 x 10-2

Ce-143

3 x 10-1

Te-132

3 x 10-2

Ce-144

9 x 10-1

I-123

5 x 10-1

Pr-142

1 x 100

Pr-143

3 x 101

Ho-166

2 x 100

Nd-147

6 x 10-1

Ho-166m

4 x 10-2

Nd-149

2 x 10-1

Er-169

2 x 102

Pm-143

2 x 10-1

Er-171

2 x 10-1

Pm-144

4 x 10-2

Tm-167

6 x 10-1

Pm-145

1 x 101

Tm-170

2 x 101

Pm-147

4 x 101

Tm-171

3 x 102

Pm-148m

3 x 10-2

Yb-169

3 x 10-1

Pm-149

6 x 100

Yb-175

2 x 100

Pm-151

2 x 10-1

Lu-172

4 x 10-2

Sm-145

4 x 100

Lu-173

9 x 10-1

Sm-147

CL

Lu-174

8 x 10-1

Sm-151

5 x 102

Lu-174m

6 x 10-1

Sm-153

2 x 100

Lu-177

2 x 100

Eu-147

2 x 10-1

Hf-172

4 x 10-2

Eu-148

3 x 10-2

Hf-175

2 x 10-1

Eu-149

2 x 100

Hf-181

1 x 10-1

Eu-150b

2 x 100

Hf-182

5 x 10-2

Eu-150a

5 x 10-2

Ta-178a

7 x 10-2

Eu-152

6 x 10-2

Ta-179

6 x 100

Eu-152m

2 x 10-1

Ta-182

6 x 10-2

Eu-154

6 x 10-2

W-178

9 x 10-1

Eu-155

2 x 100

W-181

5 x 100

Eu-156

5 x 10-2

W-185

1 x 102

Gd-146

3 x 10-2

W-187

1 x 10-1

Gd-148

4 x 10-1

W-188

1 x 100

Gd-153

1 x 100

Re-184

8 x 10-2

Gd-159

2 x 100

Re-184m

7 x 10-2

Tb-157

1 x 102

Re-186

4 x 100

Tb-158

9 x 10-2

Re-187

CL

Tb-160

6 x 10-2

Re-188

1 x 100

Dy-159

6 x 100

Re-189

1 x 100

Dy-165

3 x 100

Os-185

1 x 10-1

Dy-166

1 x 100

Os-191

2 x 100

Os-191m

1 x 100

Bi-205

4 x 10-2

Os-193

1 x 100

Bi-206

2 x 10-2

Os-194

7 x 101

Bi-207

5 x 10-2

Ir-189

1 x 100

Bi-210

8 x 100

Ir-190

5 x 10-2

Bi-210m

3 x 10-1

Ir-192

8 x 10-2

Bi-212

5 x 10-2

Ir-194

7 x 10-1

Po-210

6 x 10-2

Pt-188

4 x 10-2

At-211

5 x 10-1

Pt-191

3 x 10-1

Rn-222

4 x 10-2

Pt-193

3 x 103

Ra-223

1 x 10-1

Pt-193m

1 x 101

Ra-224

5 x 10-2

Pt-195m

2 x 100

Ra-225

1 x 10-1

Pt-197

4 x 100

Ra-226

4 x 10-2

Pt-197m

9 x 10-1

Ra-228

3 x 10-2

Au-193

6 x 10-1

Ac-225

9 x 10-2

Au-194

7 x 10-2

Ac-227

4 x 10-2

Au-195

2 x 100

Ac-228

3 x 10-2

Au-198

2 x 10-1

Th-227

8 x 10-2

Au-199

9 x 10-1

Th-228

4 x 10-2

Hg-194

7 x 10-2

Th-229

1 x 10-2

Hg-195m

2 x 10-1

Th-230

7 x 10-2

Hg-197

2 x 100

Th-231

1 x 101

Hg-197m

7 x 10-1

Th-232

CL

Hg-203

3 x 10-1

Th-234

2 x 100

Tl-200

5 x 10-2

Pa-230

1 x 10-1

Tl-201

1 x 100

Pa-231

6 x 10-2

Tl-202

2 x 10-1

Pa-233

4 x 10-1

Tl-204

2 x 101

U-230

4 x 10-2

Pb-201

9 x 10-2

U-232

6 x 10-2

Pb-202

2 x 10-1

U-233

7 x 10-2

Pb-203

2 x 10-1

U-234

1 x 10-1

Pb-205

CL

U-235

8 x 10-5

Pb-210

3 x 10-1

U-236

2 x 10-1

Pb-212

5 x 10-2

U-238

CL

Natural U

CL

Am-244

9 x 10-2

Poor U

CL

Cm-240

3 x 10-1

Enriched U 10-20%

8 x 10-4

Cm-241

1 x 10-1

Cm-242

4 x 10-2

Enriched U > 20%

8 x 10-5

Cm-243

2 x 10-1

Cm-244

5 x 10-2

Np-235

1 x 102

Cm-245

9 x 10-2

Np-236b

7 x 10-3

Cm-246

2 x 10-1

Np-236a

8 x 10-1

Cm-247

1 x 10-3

Np-237

7 x 10-2

Cm-248

5 x 10-3

Np-239

5 x 10-1

Bk-247

8 x 10-2

Pu-236

1 x 10-1

Bk-249

1 x 101

Pu-237

2 x 100

Cf-248

1 x 10-1

Pu-238

6 x 10-2

Cf-249

1 x 10-1

Pu-239

6 x 10-2

Cf-250

1 x 10-1

Pu-240

6 x 10-2

Cf-251

1 x 10-1

Pu-241

3 x 100

Cf-254

3 x 10-4

Pu-242

7 x 10-2

Pu-239/Be-9

6 x 10-2

Pu-244

3 x 10-4

Cf-252

2 x 10-2

Am-241

6 x 10-2

Cf-253

4 x 10-1

Am-242m

3 x 10-1

Am-241/Be-9

6 x 10-2

Am-243

2 x 10-1

 

 

Note:

- CL is the abbreviation for extremely large. When the value D of radioisotope is CL (extremely large), the ratio of radioactivity of radioactive source created by that radioactive unit shall be of extremely small value and will be categorized in group 5.

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