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Calculation method for dose conversion factor of aquatic organism

A technology for converting factors and aquatic organisms, applied in calculations, special data processing applications, instruments, etc., can solve problems such as unestablished evaluation methods and guidelines

Active Publication Date: 2017-11-24
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 for dose conversion factor of aquatic organism
  • Calculation method for dose conversion factor of aquatic organism

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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 calculation method for a dose conversion factor of an aquatic organism. The method comprises the following steps of determining relationships between related parameters of the aquatic organism and the dose conversion factor according to analysis on the dose conversion factor; by utilizing a Monte Carlo method, calculating dose conversion factor values of the related parameters under different irradiation conditions; performing data fitting on the dose conversion factor values by utilizing a fitting formula; performing error analysis on the fitting formula; and obtaining the dose conversion factor of the aquatic organism. By adopting the method, the dose conversion factor can be quickly and accurately calculated out only by considering organism sizes, organism density, incident particle energy and irradiation ways without considering aquatic organism types; and the method does not need to depend on a large amount of databases and is simple and easy.

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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IPC IPC(8): G06F19/00
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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