Nuclear facility decommissioned human body exposure dose assessment method

Abstract

The invention discloses a nuclear facility decommissioned human body exposure dose assessment method, and particularly relates to a simulation method for simplifying nuclear decommissioned workers into a programmed model and dynamically calculating the human body exposure dose based on a point-nuclear integration method. The method comprises the steps of adopting a programming model to construct avirtual human model; converting the key organization of the programming model into a series of detection points; calculating the equivalent dose of a key tissue detection point by adopting a point-kernel integration method; calculating the effective dose of the virtual human when the decommissioning activity is ended, and realizing the assessment of the irradiated dose of the worker in the decommissioning process. The method comprises three modules of decommissioning environment modeling, programmed human body model modeling and human body exposure dose calculation, and dynamic calculation ofthe exposure dose of a worker wearing nuclear radiation protective clothing in the nuclear facility decommissioning process is achieved.

Description

technical field [0001] The invention relates to a method for assessing the exposure dose of a decommissioned human body in a nuclear facility, and belongs to the field of nuclear decommissioning simulation. Background technique [0002] The decommissioning activities of nuclear facilities are in a dynamic and highly radioactive environment. In order to ensure the safety of workers in decommissioning activities and make their exposure dose meet the principle of radiation protection optimization, it is necessary to analyze and evaluate the exposure dose of workers before decommissioning, and plan the decommissioning work of workers according to the evaluation value. [0003] At present, the conventional method for assessing human exposure dose is to establish a virtual human body model and use the Monte Carlo method to calculate the exposure dose of the human body model. Computable human models fall into three broad categories: stylized models, voxel models, and surface model...

AI Technical Summary

Problems solved by technology

Although these Monte Carlo method-based human exposure dose assessment methods can accurately calculate the human exposure dose, the calculation speed is slow and cannot meet the real-time calculation requirements of the decommissioning process.

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