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Method for constructing assessment model of radioactive material migration and dissemination

A radioactive material and evaluation model technology, applied in the field of nuclear radiation safety, can solve the problem of insufficient accuracy, achieve the effects of improving accuracy, accurate modeling, and preventing harm to the environment and the public

Active Publication Date: 2017-10-17
SUZHOU NUCLEAR POWER RES INST +2
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The technical problem to be solved by the present invention is to provide a method for constructing a radioactive substance migration and propagation evaluation model for the above-mentioned defects of the prior art that the accuracy is not high enough

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  • Method for constructing assessment model of radioactive material migration and dissemination
  • Method for constructing assessment model of radioactive material migration and dissemination
  • Method for constructing assessment model of radioactive material migration and dissemination

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Embodiment Construction

[0034] In order to have a clearer understanding of the technical features, purposes and effects of the present invention, the specific implementation manners of the present invention will now be described in detail with reference to the accompanying drawings.

[0035] refer to figure 1 , the radioactive material migration and propagation evaluation model construction method of the present invention, including obtaining the spatial concentration and time concentration of radioactive fission products released into the environment, wherein obtaining the time concentration mainly includes the following steps S1-S3, and obtaining the space concentration includes the following steps S4 -S6.

[0036] S1. For each radioactive release category, determine the necessary source items in the order of physical time, and obtain the total mass of the source items released into the environment in each release category and the change of the total mass with time.

[0037] Wherein, the change of...

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Abstract

The invention discloses a method for constructing a migration and propagation evaluation model of a radioactive substance. The method comprises the following steps of S1. determining necessary source items to obtain a total mass of the source items released in the environment in all kinds of release types, and a condition that the total mass changes over time; S2. dividing a source item releasing process into a plurality of smoke plume sections; S3. computing the proportion of each source item released in the environment in each smoke plume section, merging and grouping the source items into a plurality of nuclide groups according to the physicochemical properties, and computing the proportion of each nuclide group according to a ratio of compounds in each source item; S4. dividing an environmental space which needs evaluation into a plurality of space units at varying distances from a smoke plume release point; S5. computing the concentration of each source item in the air space and the concentration of each source item deposited on the ground according to a smoke plume diffusion mode with a changeable wind direction; and S6. displaying a name of each source item, a spatial distance between the smoke plume and the smoke plume release point, and the proportion of residual substances of each source item in the smoke plume after dry and wet deposition. According to the method, modelling is accurate, the accuracy is improved, and the influence of the radioactive substance on the environment is scientifically predicted and coped.

Description

technical field [0001] The invention relates to the field of nuclear radiation safety, in particular to a method for constructing an assessment model for the migration and propagation of radioactive substances. Background technique [0002] Radioactive substances mainly come from the leakage of radioactive substances in nuclear installations (such as nuclear power plants, nuclear power equipment) accidents, and then the radioactive substances diffuse and deposit in the atmosphere, causing radioactive substances to migrate and spread in the environment, causing radiation pollution and damage to the surrounding environment and organisms. harm. [0003] In the event of a nuclear leakage accident, radioactive substances are released from the leak into the atmosphere. It is necessary to take appropriate and rapid protective measures in the area affected by the radioactive substances outside the site and make an optimal emergency decision. Track the dispersion process of radioact...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F19/00
Inventor 张晓明王晗丁王伟金郭建兵陈捷飞黄乾杨志超杨建峰冯丙辰王照
Owner SUZHOU NUCLEAR POWER RES INST
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