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Calculation method of dose conversion factor for aquatic organisms

A technology for conversion factors and aquatic organisms, applied in design optimization/simulation, instruments, electrical digital data processing, etc., can solve problems such as unestablished evaluation methods and guidelines

Active Publication Date: 2021-09-24
CHINA INST FOR RADIATION PROTECTION
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Problems solved by technology

As a major nuclear power, my country requires the assessment of the ecological environment impact caused by radioactive effluents in the environmental management of nuclear facilities, but no effective assessment methods and guidelines have been established yet.

Method used

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  • Calculation method of dose conversion factor for aquatic organisms
  • Calculation method of dose conversion factor for aquatic organisms

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Embodiment Construction

[0021] The specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0022] Such as figure 1 Shown, be the computing method of aquatic organism dose conversion factor of the present invention, comprise the steps:

[0023] 1) According to the analysis of dose conversion factor DCC, determine the relationship between different parameters and dose conversion factor DCC. Among them, the analysis method of the dose conversion factor DCC is as follows: According to the calculation formula of the dose conversion factor, the dose conversion factor DCC is obtained k only with deposition energy E k , The medium is related to the mass ratio M / m of the organism. For deposition energy E k , from the energy decay formula , the deposition energy E k It is proportional to the energy E of the incident particle, and is related to the distance d, cm, and the density of the medium, ρ, g / cm that the in...

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Abstract

The invention relates to a method for calculating the dosage conversion factor of aquatic organisms, comprising the following steps: determining the relationship between the relevant parameters of aquatic organisms and the dosage conversion factor according to the analysis of the dosage conversion factor; using the Monte Carlo method to calculate the relevant parameters under different irradiation conditions The dose conversion factor value below; use the fitting formula to fit the data for the above dose conversion factor value; conduct error analysis on the fitting formula; obtain the aquatic organisms dose conversion factor. By adopting the method of the present invention, the dose conversion factor can be calculated quickly and accurately without considering the type of aquatic organisms, only by considering the size of the organism, the density of the organism, the energy of the incident particles, and the irradiation path; the method does not need to rely on a large number of databases , which is easy to implement.

Description

technical field [0001] The invention belongs to the field of radiation dose calculation, and in particular relates to a calculation method of an aquatic biological dose conversion factor. Background technique [0002] For the calculation of the external (internal) radiation dose rate of aquatic organisms, the external (internal) radiation dose conversion factor DCC ((μGy h -1 ) / (Bq kg -1 )), combined with the radionuclide concentration C(Bq kg -1 ), that is, the external (internal) irradiation dose rate D (μGy h -1 ). For now, most of the calculations of the external (internal) exposure dose conversion factor DCC of aquatic organisms at home and abroad come from Monte Carlo simulation or the empirical formula of energy absorption fraction, while the radionuclide concentration C is obtained from measured value. [0003] Nowadays, part of the calculation of biological dose conversion factors in the world is based on the interpolation of a large number of MCNP calculation ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F30/20
CPCG06F2219/10G16Z99/00
Inventor 王艾俊李建国马炳辉韩宝华王慧娟曹少飞李阳
Owner CHINA INST FOR RADIATION PROTECTION
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