Transmission coefficient matrix-based method for calculating radionuclide diffusion
A radionuclide and transmission coefficient technology, applied in the field of nuclear accident emergency response, can solve the problems of sensor network damage, inability to meet the needs of nuclear emergency response, and inability to simulate, so as to achieve the effect of improving timeliness and accuracy
Inactive Publication Date: 2019-03-26
中国人民解放军陆军防化学院
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The main reason for this is that the sensor network, which is supposed to provide source term information, is severely damaged and cannot provide source term information
[0006] It can be seen that the traditional radionuclide diffusion simulation method is restricted by the source term, and the source term cannot be simulated if the source term is unknown.
In addition, with the increase of monitoring data in the middle and later stages of the accident, the source term of the nuclear accident may need to be revised. In order to obtain updated results of radionuclide diffusion, the traditional simulation method needs to be recalculated
Therefore, traditional radionuclide diffusion simulation methods cannot meet the needs of nuclear emergency response under uncertain source conditions.
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[0038] figure 1 A flow chart showing a radionuclide diffusion calculation method according to an embodiment of the disclosure, wherein the embodiment of the disclosure can solve the problem that the calculation of radionuclide diffusion cannot be carried out without nuclear accident source item information, and can effectively avoid updating source item information Unnecessary double counting, thereby improving the timeliness and accuracy of radionuclide concentration prediction.
[0039] Such as figure 1 As shown, the radionuclide diffusion calculation method of the disclosed embodiment may include:
[0040] S100: Using the first preset mode to perform dynamic downscaling processing on the meteorological data in the radiation area to obtain a high temporal and spatial resolution meteorological field;
[0041] S200: Taking the first moment when the radiation object in the radiation area releases the radioactive material as the starting moment, forming multiple time periods a...
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The invention provides a transmission coefficient matrix-based method for calculating radionuclide diffusion. The method comprises the following steps: performing dynamical downscaling on weather information in a radiation area by utilizing a first preset mode to obtain a high temporal-spatial resolution weather field; forming a plurality of time periods according to a preset interval based on aninitial moment which is the first moment when a radiation object in the radiation area releases radioactive substances, and taking each time period as once independent release; acquiring a transmission coefficient matrix according to the high temporal-spatial resolution weather field for each independent release; and acquiring the concentration of radionuclide according to source item informationand the transmission coefficient matrix. According to the embodiment, calculation can be started when the source item is unknown, unnecessary repeated calculation can be avoided when the source item is updated, and timeliness and accuracy of radionuclide concentration prediction can be effectively improved.
Description
technical field [0001] The embodiments of the present disclosure relate to the technical field of nuclear accident emergency response, and in particular to a radionuclide diffusion calculation method, device, and storage medium. Background technique [0002] At present, nuclear power plants (or certain nuclear facilities with high potential hazards due to radioactivity or other factors) may cause accidents inside nuclear facilities due to design defects, mechanical failures, potential causes of equipment manufacturing, operational errors or other external factors. In this state, the release of radioactive substances may or has lost proper control and reached an unacceptable level, resulting in the possibility that workers and the public may be exposed to radiation from radioactive substances. [0003] After uncontrollable leakage, radioactive substances are forced to diffuse and deposit into the environment through the meteorological field. The hazard process can be roughly ...
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IPC IPC(8): G16C20/00
Inventor 耿小兵绪梅袁彪王良瑜张力军
Owner 中国人民解放军陆军防化学院