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HJ 1128-2020: Technical Specifications for Environmental Emergency Monitoring in Nuclear Power Plant Accidents
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Technical Specifications for Environmental Emergency Monitoring in Nuclear Power Plant Accidents
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HJ 1128-2020
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Basic data | Standard ID | HJ 1128-2020 (HJ1128-2020) | | Description (Translated English) | Technical Specifications for Environmental Emergency Monitoring in Nuclear Power Plant Accidents | | Sector / Industry | Environmental Protection Industry Standard | | Word Count Estimation | 19,129 | | Date of Issue | 2020-06-03 | | Date of Implementation | 2020-06-30 | | Regulation (derived from) | Ministry of Ecology and Environment Announcement No. 32 (2020) | | Issuing agency(ies) | Ministry of Ecology and Environment | HJ 1128-2020: Technical Specifications for Environmental Emergency Monitoring in Nuclear Power Plant Accidents
---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.
Technical Specifications for Environmental Emergency Monitoring in Nuclear Power Plant Accidents
Technical specifications for environmental emergency monitoring of nuclear accidents in nuclear power plants
National Environmental Protection Standards of the People's Republic of China
2020-06-03 release
Issued by the Ministry of Ecology and Environment
2020-06-30 Implementation
Table of contents
Foreword...II
1 Scope of application...1
2 Normative references...1
3 Terms and definitions...1
4 Purpose and principles...2
5 Emergency monitoring and response...3
6 Monitoring Scope and Distribution Principle in Emergency State...3
7 Monitoring content in emergency state...5
8 Sample collection, processing and management...9
9 Quality Assurance...9
Appendix A (reference appendix) Radiation protection of emergency monitoring personnel...11
Appendix B (informative appendix) Initial operating intervention level (OIL) setting...12
Appendix C (informative appendix) Radioactive level measurement requirements of various samples at different stages...13
Foreword
To implement the Environmental Protection Law of the People’s Republic of China, the Law of the People’s Republic of China on the Prevention and Control of Radioactive Pollution, and the Nuclear
The Safety Law and the Emergency Response Law of the People's Republic of China regulate the environmental emergency monitoring of nuclear accidents in nuclear power plants. This standard is specially formulated.
This standard specifies the general principles, content, methods and technical requirements for environmental emergency monitoring of nuclear accidents in nuclear power plants, and is recommended for implementation.
In actual work, considering the current technical level of emergency monitoring in our country, methods and technical routes different from this standard can be used, but it must be verified.
It is clear that the methods and routes used have at least the same technical level as this standard.
The appendix of this standard is an informative appendix.
This standard is issued for the first time.
This standard is formulated by the Department of Nuclear Facilities Safety Supervision and the Department of Regulations and Standards of the Ministry of Ecology and Environment.
Drafting organizations of this standard. Nuclear and Radiation Safety Center of Ministry of Ecology and Environment, Radiation Environment Monitoring Technology Center of Ministry of Ecology and Environment, Tsinghua University,
Radiation Environment Supervision Station of Anhui Province, Suzhou Thermal Power Research Institute Co., Ltd., Chinese Academy of Metrology, Heilongjiang Radiation Environment Supervision Station.
This standard was approved by the Ministry of Ecology and Environment on June 3, 2020.
This standard will be implemented on June 30, 2020.
This standard is interpreted by the Ministry of Ecology and Environment.
Technical specifications for environmental emergency monitoring of nuclear accidents in nuclear power plants
1 Scope of application
This standard specifies the scope, layout, content, sample collection and management of emergency monitoring of off-site radiation environment when a nuclear accident occurs in a nuclear power plant.
Technical requirements for management and quality assurance.
This standard applies to the off-site environmental emergency monitoring implemented by off-site emergency organizations when a nuclear accident occurs in a nuclear power plant, and nuclear accidents occur in other nuclear facilities.
Therefore, the off-site environmental emergency monitoring can be implemented by reference.
2 Normative references
The content of this standard refers to the terms in the following documents. For undated reference documents, their valid versions are applicable to this standard.
GB 18871 Basic standard for ionizing radiation protection and radiation source safety
GB/T 14583 Code for determination of environmental surface gamma radiation dose rate
HJ/T 61 Technical Specification for Radiation Environmental Monitoring
HJ 1009 Technical Specification for Operation of Automatic Radiation Ambient Air Monitoring Station
3 Terms and definitions
The following terms and definitions apply to this standard.
3.1 emergency response (action) emergency response (action)
Emergency actions taken to control or mitigate the consequences of a nuclear accident or radiation emergency.
3.2 Emergency monitoring
The emergency monitoring in the text of this standard refers to the off-site radiation environment monitoring performed when a nuclear accident occurs in a nuclear power plant.
3.3 Operational intervention level, OIL
A set of measurable radionuclide levels or gamma radiation levels in environmental or food samples corresponding to the general intervention level.
3.4 Early phase monitoring
It is expected that the radioactive material will be released soon or the radioactive material has begun to be released to the off-site radiation environmental monitoring.
This stage can be divided into two situations. before release and the beginning of release.
3.5 Intermediate phase monitoring
The release of radioactive materials has stopped until most of the radioactive materials have settled, and the prevention of additional exposure to residents is completed or is being implemented.
The off-site radiation environment monitoring activities conducted during the protection behavior stage.
3.6 late phase monitoring
Off-site radiation environment monitoring activities during the recovery phase after the accident.
3.7 Automatic environmental radiation monitoring and air sampling station
A fixed station for automatic monitoring of environmental gamma radiation and automatic sampling of air samples, referred to as "fixed automatic station".
3.8 Portable environmental radiation automatic monitoring unit
A device for automatic monitoring of environmental gamma radiation that can be self-powered and can be quickly deployed to the site for networking monitoring, referred to as "dropping automatic device".
4 Purpose and principles
4.1 Purpose
The main purpose of implementing emergency monitoring is to protect public health and radiation environment safety, and to provide data for accident judgment and emergency decision-making;
To determine the monitoring data required for implementing emergency protection actions; provide key data for environmental impact and dose assessment; provide radiation to the public
Environmental monitoring data.
4.2 Principle
4.2.1 Graded response. The emergency monitoring should be determined according to different emergency states of nuclear accidents (plant emergency, site emergency, and off-site emergency).
The scope, monitoring items, and input power will be strengthened step by step with the improvement of the emergency state of nuclear accidents.
4.2.2 Close and distant. The spots should be arranged reasonably close to the radius of the nuclear accident, and should be arranged densely in the sensitive areas of the dominant wind and downwind direction.
4.2.3 Quick response. Emergency monitoring should respond as quickly as possible and obtain monitoring results as soon as possible.
4.2.4 Focus first. Emergency monitoring resources should be allocated according to the monitoring priorities at different stages, and the areas near the accident site should be implemented as a priority.
A monitoring project of the operational intervention level (OIL) in the living area of the affected residents.
4.2.5 Continuous monitoring. Emergency monitoring should continuously provide monitoring data in a specific space.
4.2.6 The data is reliable. Effective quality assurance measures should be taken to ensure the accuracy and reliability of monitoring data.
4.2.7 Comprehensive analysis. We should make full use of the accumulated radiation environment monitoring data, nuclear power plant
The release of radioactive materials in nuclear accidents, meteorological conditions and the prediction and evaluation results of nuclear accident consequences, and conduct emergency monitoring plan design and result analysis.
5 Emergency monitoring and response
5.1 Monitoring in the emergency state of the plant
5.1.1 Emergency monitoring personnel are on standby to ensure that all kinds of emergency monitoring equipment and auxiliary equipment and materials are readily available. Pay close attention to nuclear
Environmental monitoring data of stationary automatic stations around the power plant. According to the accident situation, pay close attention to the effluent online monitoring data, if there is effluent
For discharge to the environment, sampling and measurement of effluent discharge should be carried out.
5.2 Monitoring on site under emergency conditions
5.2.1 The fixed automatic station within the range of 30km enters emergency operation state, and obtains a gamma radiation level value every minute.
5.2.2 Start the vehicle-mounted survey within 10km, and conduct atmospheric sampling and analysis. If necessary, refer to Table 1 and Table 2 for monitoring. Do well in
Preparations for monitoring on a larger scale.
5.3 Monitoring in an off-site emergency state
5.3.1 Continue to implement emergency monitoring in 5.2 site area, determine the scope of monitoring based on the principle of spot placement and release conditions, and deploy automatic devices as needed.
5.3.2 Carry out emergency monitoring work according to the monitoring......
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