Consultation Opinion on Yiwu Radiation Monitoring Program
2007.03.
Beijing Oriental Yuantong Technology Development Co., Ltd. Zhongwei Instrument Company
I. Introduction
Yiwu, a fast-growing commerce city in central Zhejiang, covers an area of ​​1105 square kilometers, has jurisdiction over 6 towns and 7 street offices, and has a total population of more than 1.6 million, including a local population of 680,000, a temporary population of 750,000, and a floating population of about 200,000 Among the urban permanent residents, there are more than 6,000 foreign businessmen from nearly 100 countries and regions and 26,000 ethnic minorities from 40 ethnic groups in China.
Nuclear terror and nuclear proliferation are one of the four hot spots in the world in the 21st century. Yiwu can also feel the pressure of this severe situation.
The establishment of a first-class, efficient and practical environmental radiation monitoring network is imminent for Yiwu. This submission only provides some principled opinions for leaders' reference.
If more specific suggestions are needed, we can provide further advice.
Second, the principle of monitoring system setting plan
1. Advanced
This plan is a system built in the beginning of the 21st century. Environmental protection plays an increasingly decisive role in government decision-making and public opinion. It is an extremely important part of building a harmonious society and a scientific development concept. The design concept of this system To achieve an advanced level at home and abroad within 30 years.
2. Effectiveness
Nuclear and radiation safety issues have become one of the focuses of today's world. Yiwu is located in the middle of Zhejiang Province. It is adjacent to Dongyang City in the east, Yongkang City and Wuyi County in the south, Jinhua County and Lanxi City in the west, and Pujiang County and Zhuji City in the north. Located in a core position in central Zhejiang, with a developed business and prosperous market, with the deepening of energy demand, Zhejiang Province is also a rapidly developing area for nuclear power plants in China, including Sanmen, which has also begun the preliminary work of nuclear power plant construction. Commercially, the prosperous import and export trade also makes nuclear and radiation safety issues a potential threat in the region. These will lead to unexpected changes in the radioactivity background in the area. The safety of civilian radioactive sources is still the focus of environmental department management and monitoring, so this program must consider the implementation of effective monitoring of the above elements to provide effective information for government departments.
3. optimize
The most important thing in the technical setting of the monitoring system is to achieve optimization. The optimization guarantees the most economical method to obtain as much reliable and useful information as possible. We cannot use limited resources (manpower, financial resources, material resources) to To obtain unlimited information, it is necessary to optimize the monitoring plan, the selection of measuring points, the determination of methods, the selection of equipment and so on. After the optimized plan, a monitoring point can often play the role of several points, and a data can explain several purposes.
4. Informatization
China is rapidly entering the information society. In setting up the monitoring system, it is necessary to take into account the information requirements of government departments (states, provinces, and cities) at all levels and the public. In some foreign countries such as Hong Kong, the public can access the Internet Seeing the data of environmental radiation, an advanced system must be an information system.
5. Safety and reliability
Nuclear data is often a type of extremely sensitive data. Inappropriate results and wrong information will often cause government shock and affect social stability. Therefore, ensuring reliable data is an important element of security. In addition, the information is graded. Announcement is also an important part of security.
6. Holistic
The setting of the radiation monitoring system should be considered as a whole plan, so that the unity of advancement, effectiveness, optimization, informatization and security can be achieved. Under the premise of integrity, the construction of the system can be implemented in accordance with government planning, investment of funds, coordination of departments, and steps.
7. Purchase of equipment
After the plan is determined, the last step is to purchase equipment. In the era of fierce market competition, there are often many products to choose from. Choosing a famous brand and a company with a good after-sales service record are the most important.
3. Elements of radiation environment monitoring
1. Radiation monitoring
Yiwu is located in the middle of Zhejiang Province. It is adjacent to Dongyang City in the east, Yongkang City and Wuyi County in the south, Jinhua County and Lanxi City in the west, and Pujiang County and Zhuji City in the north. Located in a core position in central Zhejiang, with a developed business and prosperous market, it is located in a rapidly developing area of ​​nuclear power plants in China, including Sanmen, which has also begun the preliminary work of nuclear power plant construction. Abnormal data appears in the radiation background, and the accidental release of nuclear power plants may also cause changes in the background.
Elements of monitoring:
Continuous monitoring of fixed point gamma radiation; such as the United States GE RSS-131 continuous monitoring system for radiation environment
Fully automatic weather station
Continuous monitoring of total α and total β in aerosol (when γ radiation increases).
Fixed spectrometer
2. Radiation monitoring of nuclear power plant environment
According to the principle of "dual-track" monitoring of nuclear facilities by the Chinese government, local governments need to establish an independent monitoring system for nuclear facilities and implement independent monitoring. The focus of radiation monitoring at nuclear power plants is on artificial radionuclides for fission waste.
Elements of monitoring: continuous monitoring of fixed point gamma radiation (2-4 km from the nuclear island);
Continuous monitoring of total α and total β in aerosol (when γ radiation increases);
Nuclide analysis of various environmental media (water, soil, biology, gas, etc.);
Environmental cumulative dose measurement (TLD);
Analysis of H-3 in water and biological samples;
Flow monitoring of gamma radiation (within 30-50km from the nuclear island).
3. Environmental radiation monitoring of associated mines and other nuclear facilities
It is not clear whether Yiwu has radioactive associated mines and other nuclear facilities (such as experimental reactors, nuclear fuel cycle enterprises, large accelerators, etc.). Unlike nuclear power plants, generally associated mines and nuclear fuel cycle enterprises, the monitoring target is natural radionuclides.
Elements of monitoring: gamma radiation monitoring (preferably continuous monitoring at fixed points);
Sweep, welcome attention
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