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Nuclear accident source item inversion method and system

A technology for nuclear accident and source term, applied in the field of nuclear accident source term inversion, can solve problems such as long time, and achieve the effect of practicality

Active Publication Date: 2019-05-10
CHINA INST FOR RADIATION PROTECTION
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At present, it takes a long time to estimate the amount of accident release based on off-site monitoring data

Method used

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  • Nuclear accident source item inversion method and system
  • Nuclear accident source item inversion method and system
  • Nuclear accident source item inversion method and system

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Embodiment Construction

[0049] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0050] Such as figure 1 As shown, a nuclear accident source item inversion method includes:

[0051] S1. Perform data inspection on monitoring data, meteorological data and source item information;

[0052] Meteorological data include: wind speed, wind direction and stability; monitoring data include: time, location and monitoring results; source item information includes: nuclide ratio, release location and height.

[0053] Before using these items of data, you need to check whether the information is complete and monitor whether the data size meets the startup requirements.

[0054] S2. After passing the inspection, screen the monitoring data and remove the background data;

[0055] When it is determined that the above data meet the start-up requirements, it is also necessary to screen the monitoring data and remove the backgroun...

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Abstract

The invention discloses a nuclear accident source item inversion method and system. The method comprises the steps of data preprocessing, data assimilation and data post-processing. According to the method and the system provided by the invention, the dose conversion coefficient and different radionuclide release shares of each nuclear accident are utilized, so that the practicability of the nuclear accident source item inversion method is realized, and meanwhile, the calculation of the nuclide release rate and the cumulative release amount in an accident is realized.

Description

technical field [0001] The invention relates to the field of nuclear accident source item inversion, in particular to a nuclear accident source item inversion method and system. Background technique [0002] Various measures have been taken in the design, construction and operation of nuclear facilities to reduce the probability of severe accidents, but the Chernobyl accident and the Fukushima nuclear accident in Japan show that severe accidents are still possible. Severe accidents may lead to serious radiological consequences. Accurate consequence prediction and evaluation can provide scientific basis for decision-making of protective actions and mitigation of accident consequences. Judging the severity of the accident and estimating the source term are one of the key links in the consequence evaluation. Under normal circumstances, the readings of relevant instruments in the containment can be used to help grasp the working conditions of the nuclear power plant. flooding, ...

Claims

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Application Information

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IPC IPC(8): G06F17/10G06Q10/06G06Q50/06
CPCY02E30/30
Inventor 赵丹徐向军姚仁太张俊芳陈龙泉黄莎胡继民张芳张新骞杨彪
Owner CHINA INST FOR RADIATION PROTECTION
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