China's water radioactivity rapid monitor was successfully applied for the first time
[China Instrument Network Instrument R&D] On April 22nd, a well-developed waterborne rapid radioactivity monitor for surface monitoring of water surface was developed by the research team of Dong Zhenfang Researcher of the First Marine Research Center of the State Oceanic Administration. Success. The stereotyped rapid radioactivity monitor for water was involved in the spring voyage of radioactivity monitoring in the Yellow Sea in 2016 undertaken by the Beihai Environmental Monitoring Center of the State Oceanic Administration. From April 5 to April 14, the navigation survey was performed with the vessel 1115 and the Yellow Sea was successfully completed. Monitoring of radioactive helium in sea surface sea waters. The equipment operation was continuous and reliable. 22 helium-enriched sample cores were obtained for all voyages, and each sample core was enriched with 800L seawater. As the investigation vessel berthed on the pier in the thick fog, the application of the styling equipment for the first flight was declared successful.
The sample core is directly measured by the high-purity helium gamma spectrometer to obtain the specific activity of radioactive cesium in seawater. Combined with the position information, the distribution of radioactive cesium in the survey area of ​​the Yellow Sea can be described, reflecting the level of artificial radionuclides in the ocean water. It reflects the impact of the nuclear accident at Fukushima in Japan on the Yellow Sea. With the development of nuclear power in China's coastal areas and possible radioactive pollution that crosses borders, rapid monitoring of the radioactivity of water bodies will become necessary equipment for marine investigations.
Rapid calibration of the water radioactivity monitor improves the automatic adjustment and control of the monitor. The realization of continuous integration of sampling volume, flow rate monitoring and regulation, automatic acidity control, pressure monitoring and regulation, leakage protection, operation data record, shutdown record, operation status display, and fault indication. Easy operation and maintenance, one person can complete the entire voyage monitoring work, greatly improving the work efficiency and reducing labor intensity. According to the characteristics of more seawater suspended in the sea, two levels of pre-filtering are adopted to ensure the enrichment of sampling quality. The large sampling volume of the monitor reduces the detection limit of radioactive helium in seawater by one order of magnitude. The monitor is installed in the investigation ship's laboratory and realizes the rapid on-site automatic sampling and monitoring of radioactive cesium. Water rapid radioactivity monitor can be used for water body radioactive emergency monitoring, and can also be used for routine monitoring of water body radioactivity.
The "enrichment" of radionuclides from seawater is a difficult task. Those who have participated in marine radiological monitoring missions have a deep understanding. Marine radioactivity monitoring has a large workload, high labor intensity, and long time. Large volumes of seawater samples need to be collected at the site. The collection, storage, and handling of large quantities of seawater samples is a manual work. Subsequent analysis can only be carried out after the survey is completed, and the seawater samples are shipped back to the onshore laboratories. The stereotypes of the rapid radioactivity monitor for water were implemented to realize a monitor and a high-purity 锗 γ spectrometer. An operator can complete the task of monitoring radioactive helium in the surface seawater of the entire voyage and get rid of the bottled seawater sampling. It is a major breakthrough in the field of marine radioactivity monitoring and lays the foundation for the on-site monitoring of marine radioactivity.
The North Sea Environmental Monitoring Center of the State Oceanic Administration, as the first user of stereotyped equipment, gave strong support to the application of the first flight. In this voyage application, two staff members of the monitoring center conducted instrument training and trials. The instrument is fast, accurate, and simple, freeing the monitor personnel from the tedious physical labor and the marine radioactivity monitoring work has become easy and enjoyable. The instrument was well received by the marine monitoring personnel.
Rapid calibration of water radioactivity monitor was successfully completed and the application for the first flight was successfully completed, which provided favorable evidence for the commercialization of the instrument. The rapid radioactivity monitor will be a modern weapon for radioactivity monitoring in nuclear power, environmental protection, marine and other units and regulatory agencies.
(Original title: The first voyage application of the well-established water body rapid radioactivity monitor developed by our company has been successful)
The sample core is directly measured by the high-purity helium gamma spectrometer to obtain the specific activity of radioactive cesium in seawater. Combined with the position information, the distribution of radioactive cesium in the survey area of ​​the Yellow Sea can be described, reflecting the level of artificial radionuclides in the ocean water. It reflects the impact of the nuclear accident at Fukushima in Japan on the Yellow Sea. With the development of nuclear power in China's coastal areas and possible radioactive pollution that crosses borders, rapid monitoring of the radioactivity of water bodies will become necessary equipment for marine investigations.
Rapid calibration of the water radioactivity monitor improves the automatic adjustment and control of the monitor. The realization of continuous integration of sampling volume, flow rate monitoring and regulation, automatic acidity control, pressure monitoring and regulation, leakage protection, operation data record, shutdown record, operation status display, and fault indication. Easy operation and maintenance, one person can complete the entire voyage monitoring work, greatly improving the work efficiency and reducing labor intensity. According to the characteristics of more seawater suspended in the sea, two levels of pre-filtering are adopted to ensure the enrichment of sampling quality. The large sampling volume of the monitor reduces the detection limit of radioactive helium in seawater by one order of magnitude. The monitor is installed in the investigation ship's laboratory and realizes the rapid on-site automatic sampling and monitoring of radioactive cesium. Water rapid radioactivity monitor can be used for water body radioactive emergency monitoring, and can also be used for routine monitoring of water body radioactivity.
The "enrichment" of radionuclides from seawater is a difficult task. Those who have participated in marine radiological monitoring missions have a deep understanding. Marine radioactivity monitoring has a large workload, high labor intensity, and long time. Large volumes of seawater samples need to be collected at the site. The collection, storage, and handling of large quantities of seawater samples is a manual work. Subsequent analysis can only be carried out after the survey is completed, and the seawater samples are shipped back to the onshore laboratories. The stereotypes of the rapid radioactivity monitor for water were implemented to realize a monitor and a high-purity 锗 γ spectrometer. An operator can complete the task of monitoring radioactive helium in the surface seawater of the entire voyage and get rid of the bottled seawater sampling. It is a major breakthrough in the field of marine radioactivity monitoring and lays the foundation for the on-site monitoring of marine radioactivity.
The North Sea Environmental Monitoring Center of the State Oceanic Administration, as the first user of stereotyped equipment, gave strong support to the application of the first flight. In this voyage application, two staff members of the monitoring center conducted instrument training and trials. The instrument is fast, accurate, and simple, freeing the monitor personnel from the tedious physical labor and the marine radioactivity monitoring work has become easy and enjoyable. The instrument was well received by the marine monitoring personnel.
Rapid calibration of water radioactivity monitor was successfully completed and the application for the first flight was successfully completed, which provided favorable evidence for the commercialization of the instrument. The rapid radioactivity monitor will be a modern weapon for radioactivity monitoring in nuclear power, environmental protection, marine and other units and regulatory agencies.
(Original title: The first voyage application of the well-established water body rapid radioactivity monitor developed by our company has been successful)
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