Containment pressure relieving system of underground nuclear power station in serious accidents

A serious accident and containment technology, which is applied in the field of containment design of nuclear power plants, can solve the problems of not being able to take into account the shortcomings of containment rapid decompression and radioactive gas discharge at the same time, so as to avoid a large number of releases, alleviate serious accidents, and maintain integrity.

Active Publication Date: 2014-06-18
CHANGJIANG SURVEY PLANNING DESIGN & RES
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Problems solved by technology

[0004] The purpose of the present invention is to overcome the shortcomings of the above-mentioned nuclear power plant that can not take into account the rapid pressure relief of the containment and the discharge of radioactive gas at the same time in the event of a serious accident, and provide a method that can not only

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  • Containment pressure relieving system of underground nuclear power station in serious accidents

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Embodiment Construction

[0018] Below in conjunction with accompanying drawing and specific embodiment the present invention will be described in further detail:

[0019] The containment decompression system shown in the figure under a serious accident in an underground nuclear power plant includes a containment 25, a pressure relief pipeline, and a pressure relief chamber 24. The containment is located in the reactor building 26, and one end of the pressure relief pipeline includes the first The other end of the pressure relief pipeline includes a third branch connected to the pressure relief chamber and a fourth branch connected to the external chimney, and the fourth branch is located in the pressure relief chamber.

[0020] On the first branch, a first safety valve 3 and a first blasting valve 9 are arranged in series in sequence, and a second safety valve 10 is arranged in parallel on the first blasting valve 9;

[0021] On the second branch, a second blasting valve 6, a third safety valve 2 and ...

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Abstract

The invention discloses a containment pressure relieving system of an underground nuclear power station in serious accidents. The system comprises a containment, a pressure relieving pipeline and a pressure relieving chamber, wherein the containment is arranged in a reactor building; the pressure relieving pipeline is used for communicating the containment, the reactor building, the pressure relieving chamber and an outside chimney respectively by branches; each pressure relieving branch is provided with a related valve and a radioactive gas treatment device. After the containment pressure relieving system is adopted, automatic pressure release can be automatically realized by different pressure relieving ways according to the pressure rise in the containment, and radioactive air can be filtered and discharged in the period of the whole accident, so that great convenience is brought to the rescue and spot clean after the accident.

Description

technical field [0001] The invention relates to a nuclear power plant containment design technology, in particular to a containment pressure relief system for severe accidents in an underground nuclear power plant. Background technique [0002] When a nuclear power plant is facing a serious accident, the pressure inside the containment will increase with the temperature, and the containment will face the risk of failure. At this time, on the one hand, in order to prevent the large-scale diffusion of radioactive air in the containment, the radioactivity must be contained in the containment as much as possible; And this will cause a large amount of leakage of radioactivity, which will bring serious harm to the environment and the public. Under this contradiction, if the operator of the nuclear power plant hesitates a little, the accident will further deteriorate, resulting in uncontrollable and serious consequences. [0003] The vast majority of nuclear power plants currentl...

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Application Information

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IPC IPC(8): G21C13/00G21C13/02
CPCY02E30/40Y02E30/30
Inventor 刘海波赵鑫杨家胜张涛喻飞苏毅
Owner CHANGJIANG SURVEY PLANNING DESIGN & RES
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