Airborne radioactive non-proliferation system for underground nuclear power plants

Abstract

The invention discloses an airborne radioactive proliferation prevention system of an underground nuclear power plant, which comprises a reactor workshop cavern, a nuclear fuel workshop cavern, a nuclear auxiliary workshop cavern and a pressure relief cavern deeply buried underground. Each underground cavern is connected with air inlet and exhaust pipelines and corresponding equipment. Pressure monitoring sensors are installed in each cavern to control the air intake and exhaust volume of each cavern through pressure signals, maintain the negative pressure environment of each cavern relative to the outside world and the gradient negative pressure environment between each cavern, and prevent potential airborne radioactivity from spreading to the environment. leakage, and prevent the spread of radioactivity from high-contamination areas to low-contamination areas between underground caverns. At the same time, the exhaust air flow direction is controlled by the monitoring signal of the online radiation monitor, and different processing paths are automatically selected according to the radioactive level of the exhaust air, so as to realize the controllable airborne radioactivity in the operation of underground nuclear power plants and accident conditions, and prevent airborne radioactivity from leaking to the outside environment. diffusion.

Description

technical field [0001] The invention relates to the technical field of nuclear power technology, in particular to an airborne radioactive proliferation prevention system of an underground nuclear power plant. Background technique [0002] In the case of serious accidents in existing ground nuclear power plants, the containment is the last barrier and plays the role of radioactive containment. However, once the integrity of the containment vessel is lost, a large amount of radioactivity will be released to the environment, especially the airborne radioactivity will migrate and spread with the atmosphere, continuously expanding the scope of radioactive pollution, and greatly increasing the difficulty of cleaning up after the accident. For example, in the Fukushima nuclear accident in Japan, airborne radioactivity drifted with atmospheric movement, and then polluted a wide range of surrounding areas with rainfall, natural subsidence and other processes, causing serious radiatio...

AI Technical Summary

Problems solved by technology

In order to make full use of the advantages of underground nuclear power plants, the ventilation and exhaust systems and emission filtration systems of the original ground nuclear power plants cannot effectively control the release of radioactivity (Fukushima nuclear accident, Chernobyl nuclear accident)

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