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

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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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 meet the requirements of rapid pressure relief of the containment of the nuclear power plant under severe accidents, but also prevent accidents. Containment pressure relief system for underground nuclear power plants in serious accidents after filtering and discharging radioactive gas while depressurizing the containment

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