Fire monitoring method and system for containment vessel of nuclear power station during bulge test

Abstract

The invention discloses a fire monitoring method and system for a containment vessel of a nuclear power station during a bulge test, and the system comprises an air component detection sensor which is used for obtaining the data of the air components in the containment vessel in real time; a data collection and processing module which is used for storing and processing the data of the air components, obtaining a real-time change tendency chart of the air components, and judging whether there is a fire danger happening in the containment vessel or not; and a monitoring display device which is used for displaying the real-time change tendency chart of the air components and the judgment result of the fire danger in real time. Through an air-sensitive resistor and a smoke sensor, the system can achieve the real-time monitoring of the interior of a nuclear island plant during the bulge test of the containment vessel, visually displays the temperature change at the nuclear island plant and the content variation tendency of each type of gas generated after burning, and timely judges the fire condition in the containment vessel. According to the technical scheme of the invention, the system is suitable for the bulge test of the containment vessel at a construction phase, and also can be used for fire monitoring a service phase during the bulge test of the containment vessel.

Description

technical field [0001] The invention relates to the technical field of nuclear power safety, in particular to a fire monitoring method and a system thereof during a containment pressure test of a nuclear power plant. Background technique [0002] The containment vessel of a nuclear power plant, that is, the reactor building, is a cylindrical prestressed reinforced concrete structure with a quasi-spherical dome, which is used to prevent the fission products from the fuel and the primary loop of radioactive substances from entering the environment. When a reactor loses water accident, a large amount of radioactive and high-temperature and high-pressure steam-water mixture released can be contained and isolated to prevent harm to residents around the nuclear power plant. [0003] As the third safety barrier of nuclear power units, the containment plays an important role in limiting the spread of radioactive substances from the reactor to the atmosphere, and its construction qua...

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Problems solved by technology

[0012] The present invention aims at the technical problems existing in the prior art that the fire monitoring means during the containment pressure test is difficult to judge the initial danger of the fire, and the monitoring means have poor timeliness, lack of redundancy, single judgment scheme and large errors, and provide a nuclear power plant Fire monitoring method and system during containment compression test

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