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GBZ139-2019: (Radiation protection requirements for rare earth production sites)
Status: Valid GBZ139: Evolution and historical versions
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| GBZ 139-2019 | English | 339 |
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(Radiation protection requirements for rare earth production sites)
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GBZ 139-2019
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| GBZ 139-2002 | English | 359 |
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Radiological protection standards for the production places of rare-earth elements
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GBZ 139-2002
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Basic data | Standard ID | GBZ 139-2019 (GBZ139-2019) | | Description (Translated English) | (Radiation protection requirements for rare earth production sites) | | Sector / Industry | National Standard | | Classification of Chinese Standard | C57 | | Classification of International Standard | 13.100 | | Word Count Estimation | 15,178 | | Date of Issue | 2019 | | Date of Implementation | 2020-04-01 | GBZ139-2019: (Radiation protection requirements for rare earth production sites)---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
(Radiation protection requirements for rare earth production sites)
ICS 13.100
C 57
GBZ
National Occupational Health Standards of the People's Republic of China
Replace GBZ 139-2002
Radiation protection requirements for rare earth production sites
2019-09-27 released
2020-04-01 implementation
Issued by the National Health Commission of the People's Republic of China
Table of contents
Foreword...II
1 Scope...1
2 Normative references...1
3 Terms and definitions...1
4 General requirements...2
5 Classification and protection requirements for rare earth production sites...2
6 Protective measures...2
7 Workplace Monitoring...4
8 Monitoring and estimation of personal dose...5
9 Occupational Health Monitoring...6
Appendix A (informative appendix) The derived air concentration of common radionuclides...7
Appendix B (informative appendix) The main content of radiation protection training for workers in rare earth production sites...9
Appendix C (Normative Appendix) Methods of Estimating Personal Dose...10
References...12
Foreword
Chapters 4 to 9 and Appendix C of this standard are mandatory, and the rest are recommended.
This standard is formulated in accordance with the "Law of the People's Republic of China on Occupational Disease Prevention and Control"
This standard was drafted in accordance with the rules given in GB/T 1.1-2009.
This standard replaces GBZ 139-2002 "Radiation Health Protection Standards in Rare Earth Production Sites". Compared with GBZ 139-2002, except for editing
The main technical changes besides the sexual modification are as follows.
-Modified the requirements for the classification of rare earth production radioactive sites (see Chapter 5, Chapter 4 of the.2002 edition);
--- Increase the requirements for protective measures (see Chapter 6);
- Detailed requirements for the selection of workplace monitoring points (see 7.3, 6.1 of the.2002 edition);
--Added the requirements for personal monitoring of staff (see 8.1).
Drafting organizations of this standard. Institute of Radiation Protection and Nuclear Safety Medicine, Chinese Center for Disease Control and Prevention, Institute of Radiation Medicine, Fudan University, Jiang
Western Provincial Institute of Occupational Disease Prevention and Control, Sichuan Provincial Center for Disease Control and Prevention, Hunan Provincial Institute of Occupational Disease Prevention and Control, Baotou City Center for Disease Control and Prevention.
The main drafters of this standard. Sun Quanfu, Li Xiaoliang, Hou Changsong, Zhuo Weihai, Cui Hongxing, Lei Shujie, Chen Yishui, Wen Xiangmin, Li Hong,
Zhu Guozhen, Peng Junzhe, Jin Rong.
The previous versions of the standard replaced by this standard are as follows.
--GBZ 139-2002.
Radiation protection requirements for rare earth production sites
1 Scope
This standard specifies the principles and basic requirements of radiation protection for rare earth production sites.
This standard is applicable to radiation protection in workplaces such as rare earth mining, mineral processing and smelting.
2 Normative references
The following documents are indispensable for the application of this document. For dated reference documents, only the dated version applies to this document.
For undated references, the latest version (including all amendments) applies to this document.
GB/T 11743 γ-spectrum analysis method for radionuclides in soil
GB/T 14056.1 Determination of Surface Contamination Part 1.β-emitter (Eβmax＞0.15 MeV) and α-emitter
GB/T 14582 Standard measurement method for radon in ambient air
GB/T 14583 Code for determination of environmental surface gamma radiation dose rate
GBZ 1 Hygienic Standard for Design of Industrial Enterprises
GBZ 2.1 Occupational Exposure Limits for Hazardous Factors in the Workplace Part 1.Chemical Hazardous Factors
GBZ 128 Specification for personal monitoring of occupational external exposure
GBZ 129 Specifications for personal monitoring of occupational internal exposure
GBZ 188 Technical Specification for Occupational Health Monitoring
GBZ /T 233 Radiation Health Protection Standard for Tin Mine Workplace
GBZ 235 Technical Specification for Occupational Health Monitoring of Radiation Workers
GBZ /T 256 Radon radiation protection requirements in non-uranium mining
AQ.2013.4-2008 Ventilation Technical Specification for Metal and Nonmetal Underground Mines Ventilation Management
EJ/T 978 Regulations on personal monitoring and management of radiation workers in uranium geology, mines, and processing plants
3 Terms and definitions
The following terms and definitions apply to this document.
3.1
Rare earths
The lanthanides in the periodic table of elements lanthanum (La), cerium (Ce), praseodymium (Pr), neodymium (Nd), promethium (Pm), samarium (Sm), europium (Eu), gadolinium (Gd), terbium
(Tb), dysprosium (Dy), holmium (Ho), erbium (Er), thulium (Tm), ytterbium (Yb), lutetium (Lu), plus scandium (Sc) and yttrium (Y) of the same family 17 Yuan
The general term for vegetarian.
3.2
Materials
Feedstock, intermediate products, final products, by-products and waste are collectively referred to as materials, including ore (raw ore, concentrate), mixed rare earth compounds
Waste, tailings, water leaching residue (also known as acid soluble residue, iron and thorium residue), scaling, sludge and dust from dust collectors.
4 General requirements
4.1 The protective measures of rare earth production sites should be adapted to the specific conditions of the production site, and radiation protection should follow the legitimacy, protection and safety of practice.
Three basic principles of total optimization and personal dose limit.
4.2 The employer shall classify the rare earth production sites as required.
4.3 The employer shall adopt corresponding protection requirements according to different classifications.
5 Classification and protection requirements for rare earth production sites
5.1 Collect materials in each production link, focusing on samples such as ore, tailings, and water leaching slag, and adopt corresponding physical or chemical methods to determine
Among them, the activity concentration of natural radionuclides such as 232Th of the thorium series and 238U of the uranium series, combined with the expected annual effective dose of individuals, is useful for rare earth production.
Hierarchical management of sites (see Table 1).
5.2 According to the activity concentration levels of thorium-based and uranium-based radionuclides in the materials, combined with the expected annual effective dose of individuals, appropriate protection requirements shall be adopted.
Seek peace action to protect the occupational health of the staff.
6 Protective measures
6.1 General requirements
6.1.1 On the whole, do a good job in the design, installation, maintenance and operation of engineering facilities at rare earth production sites.
6.1.2 Equipped with radiation protection management personnel familiar with rare earth production processes to ensure radiation safety in production sites.
6.1.3 Take engineering measures, including the use of closed automatic equipment with negative pressure to process the concentrated radioactive materials,
The color of hands, equipment, furniture, etc. is significantly different from that of processed materials and products.
6.1.4 The wet process should be used to reduce dust.
6.1.5 The process of preferential separation of thorium, uranium and radium is adopted to create non-radioactive or low-radioactive operating conditions for the subsequent processes, and minimize
The area of radioactive contamination.
6.1.6 Develop effective measures and implement strict management to avoid spillage during on-site transportation, promote cleaner production, and conduct daily inspections on production areas.
Clean up. Using advanced technology and equipment, timely disposal of radioactive "three wastes".
6.2 Workplace partition
6.2.1 Production areas such as ore mining, beneficiation, separation and smelting shall be separated from non-production areas such as office areas and living areas.
6.2.2 The production area should be selected in a location with good air pollutant diffusion conditions and arranged on the upwind side of the local annual minimum frequency wind direction.
The area is arranged on the leeward side of the local annual minimum frequency wind direction, and the auxiliary production area is arranged between the two; the workshop that produces radioactive dust and the "three
The “waste” treatment site should be located on the upwind side of the local annual minimum frequency wind direction in the adjacent workshop.
6.2.3 Divide workplaces with high levels of radioactivity (for example, the dose equivalent rate around γ may be greater than 15 μSv/h) into control areas for management
Rationale. Other workplaces not classified as controlled areas shall be managed as supervision areas. The control area and other working areas should be clearly separated physically,
And put up eye-catching warning signs of ionizing radiation, establish and implement certain management measures.
6.3 Dust control
6.3.1 Necessary dust reduction measures should be taken for dusty processes in workplaces such as mining, beneficiation and smelting. The specific requirements shall be implemented with reference to GBZ 1.
6.3.2 The requirements for dust concentration control in the workplace shall be implemented in accordance with GBZ 2.1.
6.3.3 Refer to......
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