Large nuclear power station with underground reactor and radioactive auxiliary plant

Abstract

The invention discloses a large nuclear power station with underground reactor and radioactive auxiliary plant. The large nuclear power station comprises a nuclear island and a conventional island, wherein the nuclear island generates steam by nuclear fission, the conventional island uses the steam generated by the nuclear island to generate electricity, the large nuclear power station is characterized in that the nuclear island is arranged in a underground cavern group excavated in hard rocks by men, the conventional island is on the ground, a passive pool is arranged at the upper part of the cavern group, and a nuclide migration protective system is also arranged outside the cavern group. The large nuclear power station is consistent with the passive concept of the third generation of nuclear power technology, effectively prevents nuclear radiation diffusion in accidents, has the good resistance to shock, prevents tsunami and typhoon from damaging nuclear buildings, has the good safety, and can resist the terrorist attack.

Description

technical field [0001] The invention relates to nuclear power technology, in particular to a large nuclear power plant in which reactors and radioactive auxiliary workshops are placed underground. Background technique [0002] A nuclear power plant is a power plant that converts the energy generated in the fission reaction of nuclear fuels such as uranium and plutonium into electrical energy. At present, large-scale commercial nuclear power plants generally use pressurized water reactors, with a single reactor power of more than 600MW. Steam is generated in the device, and the steam is transmitted to the steam turbine through the secondary circuit, and drives the generator set to generate electricity. The steam after power generation is condensed through the third circuit and returned to the steam generator. Nuclear power plant buildings are generally divided into two parts: nuclear islands that use nuclear fission to produce steam, including reactor devices and primary loo...

AI Technical Summary

Problems solved by technology

[0004] (1) Conventional large-scale commercial nuclear power plants on the ground may cause leakage of radionuclides under super-baseline accidents such as melting reactors

For example, the meltdown accident of the Chernobyl nuclear power plant in the former Soviet Union caused a large-scale leakage of radioactive nuclides and caused major damage to the natural environment of the region;

[0005] (2) Conventional large-scale commercial nuclear power plants on the ground have certain deficiencies in their safety against natural disasters such as tsunamis and earthquakes

For example, the tsunami triggered by the earthquake caused great damage to the Fukushima nuclear power plant in Japan, causing a large amount of radionuclides to leak into the atmosphere, ocean and soil, causing major damage to the global ecosystem;

[0006] (3) The nuclear-related buildings of conventional large-scale commercial nuclear power plants on the ground are all located on the surface, and their ability to resist missile strikes and aircraft impacts under war conditions is relatively weak;

[0007] (4) The last defense barrier of conventional large-scale commercial nuclear power plants on the ground is the containment vessel. If the containment vessel ruptures, it will cause large-scale leakage of radionuclides into the atmosphere

Radionuclides will diffuse into the entire biosphere with groundwater, causing widespread nuclear pollution

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