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Nuclear power plant smoke plume emergency plan area division method and device

A technology for emergency planning and nuclear power plants, which is applied in calculation, data processing applications, complex mathematical operations, etc., and can solve the problems of unreasonable division and design of nuclear power plant plume emergency planning areas, single deterministic source items, and failure to consider the probability of accidents, etc. question

Pending Publication Date: 2021-09-14
CHINA NUCLEAR POWER ENG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In the traditional design of nuclear power plant plume emergency planning area division, only a single deterministic source term is used, and some accidents with low probability of occurrence but serious consequences may cause nuclear power plant plume emergency planning area division. unreasonable design

Method used

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  • Nuclear power plant smoke plume emergency plan area division method and device
  • Nuclear power plant smoke plume emergency plan area division method and device
  • Nuclear power plant smoke plume emergency plan area division method and device

Examples

Experimental program
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Effect test

Embodiment 1

[0049] Such as figure 1 As shown, this embodiment provides a method for division of nuclear power plant plume emergency planning areas, including the following steps:

[0050] S101 takes the nuclear power plant as the center, establishes a simulation area within the preset distance from the nuclear power plant, and the simulation area is composed of several preset positions;

[0051]S102 For a preset location in the simulation area, sample the hourly meteorological conditions of the nuclear power plant within the preset time to obtain meteorological data, and use the probabilistic source item given by the secondary probabilistic safety analysis, for each secondary probability Safety analysis of source item release categories, calculating the dose results of all release categories under all hourly meteorological sampling conditions at preset locations;

[0052] S103 combines the dose results with the frequency of occurrence of each secondary probabilistic safety analysis sourc...

Embodiment 2

[0065] Such as image 3 As shown, this embodiment provides a method for division of nuclear power plant plume emergency planning areas, including the following steps:

[0066] S201 takes the nuclear power plant as the center, establishes a simulation area within the preset distance from the nuclear power plant, and the simulation area is composed of several preset positions; specifically, in this embodiment, in the Cartesian coordinate system centered on the nuclear power plant In the above, a grid with a preset resolution of 200m×200m is established. The simulation area is composed of several preset grids. The preset position is the preset grid. The simulation area is 10km around the nuclear power plant site.

[0067] S202 is aimed at the kth preset grid position from the nuclear power plant release source in the simulation area, that is, the kth grid position from the nuclear power plant release source.

[0068] S203 performs meteorological sampling on the j-th group of met...

Embodiment 3

[0103] This embodiment provides a method for division of nuclear power plant plume emergency planning areas, the difference from Embodiment 2 is:

[0104] Such as Figure 6 As shown, the 7-day effective dose does not exceed 50mSv is selected as the dose limit of the outer boundary of the nuclear power plant plume emergency planning area, and the frequency fi at which the 2-day effective dose exceeds 10mSv at the grid can be obtained.

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Abstract

The invention discloses a nuclear power plant smoke plume emergency plan area division method and device. The method comprises the following steps: 1) establishing a simulation area by taking a nuclear power plant as a center; 2) sampling hourly meteorological conditions for a preset position to obtain meteorological data, and calculating dose results of all release classes under all hourly meteorological sampling conditions by adopting a probability theory source item given by secondary probability safety analysis; 3) combining the occurrence frequency of each source item release class to obtain a source item, and performing calculating to obtain a weighted dose result; 4) obtaining the change of the frequency exceeding the specified dose along with the dose, and combining the specified dose limit value to obtain the frequency exceeding the specified dose limit value; 5) obtaining frequencies of all preset positions exceeding a specified dose limit value; 6) determining the range of the smoke plume emergency plan area in combination with a specified frequency limit value. According to the device and the method, the smoke plume emergency planning area is reasonably divided and designed, and a technical foundation is laid for development of three-level probability safety analysis work of the nuclear power plant.

Description

technical field [0001] The invention belongs to the technical field of safety analysis of nuclear power plants, and in particular relates to a method and a device for dividing a plume emergency planning area of ​​a nuclear power plant. Background technique [0002] The emergency planning area refers to the area established in advance around the nuclear power plant, where emergency plans have been formulated and emergency preparations are made, in order to take timely and effective protective actions to protect the public in the event of an accident at the nuclear power plant. In the event of a nuclear accident, emergency preparedness needs to be carried out in the emergency planning area. In the case of emergency intervention, it is convenient to organize effective emergency response actions quickly and minimize the possible impact of the accident on the public and the environment. Among them, the plume emergency planning area is an emergency planning area established for th...

Claims

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Application Information

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IPC IPC(8): G06Q10/04G06F17/18G06Q10/06G06Q50/06
CPCG06Q10/043G06Q10/06393G06Q50/06G06F17/18
Inventor 王梦溪龙亮蔺洪涛刘蕴黄树明薛娜邱林赵博吴楠高健伟闫瑾张捷敏刘亚
Owner CHINA NUCLEAR POWER ENG CO LTD
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