Source item estimation method for conventional explosion radioactive aerosol diffusion

Abstract

The invention discloses a source item estimation method for conventional explosion radioactive aerosol diffusion. The method comprises the following steps that: aiming at radioactive substance groundconventional explosion, estimating explosion equivalent; on the basis of the explosion equivalent, estimating the size of explosion smoke cloud, wherein the size of explosion smoke cloud comprises theheight 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, estimating the generation portion and the aerosol partial size distribution of the explosion radioactive aerosol, estimating the influence of the effect of heavy gas on the source item, and setting a nuclide to which needs to be paid attention by an explosion event. By use of the method, the explosion equivalent, the mass of explosive substances, local wind speed and the like are taken as bases, the size of the smoke cloud, the generation portion of the explosive aerosol, the aerosol partial size distribution and the influence of the effect of heavy gas on the source item are comprehensively considered, a source item estimationmethod is formed so as to conform to practical situations, and an effect is superior to a 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...

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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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