The Calculation Method of Collective Dose in Dispersion Accidents of Transporting Radioactive Materials

A calculation method, a radioactive technology, applied in the field of risk assessment of the transport of radioactive materials
CN107977543BActive Publication Date: 2021-09-24CHINA INST FOR RADIATION PROTECTION
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
CHINA INST FOR RADIATION PROTECTION
Publication Date
2021-09-24

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Abstract

The invention belongs to the field of risk assessment of radioactive material transportation, and in particular relates to a calculation method for collective dose in radioactive material transportation dispersion accidents. This method fully divides the area of ​​arbitrary shape concerned in the leeward direction in dispersion accidents into at least one regular-shaped sub-area, calculates the average nuclide concentration of each regular-shaped sub-area, and then further calculates the average nuclide concentration of this area, and then According to the parameters such as shielding factor, dose conversion factor, immersion external exposure time, the number of packages released due to damage, the population density of the area and the area of ​​the area, the collective dose of the area is obtained. The area of ​​collective dose considered in this method is arbitrarily shaped, which is closer to the real situation.
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Description

technical field

[0001] The invention belongs to the field of risk assessment of radioactive material transportation, and in particular relates to a calculation method for collective dose in radioactive material transportation dispersion accidents. Background technique

[0002] For the calculation method of the collective dose in the radioactive material transport dispersion accident, in the original foreign calculation software, the calculation of the collective dose of a certain area downwind of the accident point is considered in the polar coordinate system, that is to say, only the collective dose of the circular area can be considered Dose; in domestic calculation software, under the Cartesian coordinate system, the collective dose in the rectangular area downwind of the accident point is considered, see figure 1 .

[0003] In dispersion accidents, the collective dose calculation in any area in the downwind direction can be calculated through the average nuclide concent...

Claims

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