A Source Term Estimation Method for Radioactive Aerosol Diffusion in Conventional Explosions

Abstract

The invention discloses a method for estimating the source term of conventional explosion radioactive aerosol diffusion, comprising the following steps: aiming at the conventional explosion of radioactive substances on the ground, estimating the explosion equivalent, and estimating the size of the explosion smoke cloud based on the explosion equivalent, and the size of the explosion smoke cloud includes: The height of the explosion smoke cloud, the radius of the explosion smoke cloud, the volume of the explosion smoke cloud, and the density of the explosion smoke cloud, estimate the proportion of the explosion aerosol and the particle size distribution of the aerosol, estimate the impact of the heavy gas effect on the source term, and set the explosion event Nuclides of concern. This method is based on the explosion equivalent, explosive mass, and local wind speed, and comprehensively considers the size of the explosion smoke cloud, the proportion of the explosion aerosol, the particle size distribution of the aerosol, and the influence of the heavy gas effect on the source item to form a source item estimation method. , which is more in line with the actual situation, and the effect is better than that of the point source diffusion model.

Description

technical field [0001] The invention relates to the field of radiation environmental impact assessment, in particular to a method for estimating source terms of conventional explosion radioactive aerosol diffusion. That is, the calculation method of the radioactive aerosol diffusion source term produced by conventional explosions. Background technique [0002] Since the beginning of the 21st century, especially after the 9.11 incident, non-traditional security threats represented by various terrorist bombings have become more serious. Due to their particularity, nuclear materials and nuclear facilities have become one of the main targets of terrorists. At the same time, nuclear materials And the safety of nuclear facilities has also become the focus of attention. [0003] The IAEA (International Atomic Energy Agency) divides nuclear and radiation terrorist attacks into four main types: [0004] 1. Illegal acquisition of radioactive substances (radioactive materials), manuf...

AI Technical Summary

Problems solved by technology

[0004] 1. Illegal acquisition of radioactive substances (radioactive materials), manufacture of radioactive dispersal devices (RDD), and implementation of radioactive attacks, such as dirty bombs;

[0005] 2. Attacks on nuclear facilities such as nuclear power plants (NPPs) cause nuclear accidents, resulting in the release of radioactive substances into the environment;

[0006] 3. Illegal acquisition of special nuclear materials, manufacture of rough nuclear devices (IND), and implementation of nuclear explosions;

[0007] 4. Illegally acquire complete nuclear weapons and carry out nuclear explosions

There is a lack of corresponding research and analysis in the prior art, and there is no corresponding forming technical solution

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