Containment Pressure Relief Filtration Discharge Comprehensive System

Abstract

The invention relates to a containment pressure relief filter discharge comprehensive system, comprising a discharge pipeline leading out of the containment atmosphere from the containment, a first metal fiber filter is arranged on the section of the discharge pipeline located in the containment, and the discharge pipeline After being drawn out from the containment, it passes through the containment isolation valve and is connected to the Venturi water-washing filter, and the exhaust gas filtered by the Venturi water-washing filter enters the second metal fiber filter, and the condensate formed in the second metal fiber filter The condensate return line returns to the Venturi water-washed filter, the outlet end of the second metal fiber filter is connected to the silver zeolite filter through the preheating circuit, the outlet end of the silver zeolite filter is connected to the bursting membrane, and the downstream pipeline of the bursting membrane is discharged The isolation valve is connected to the chimney of the nuclear power plant or returned to the interior of the containment through the gas return pipeline or connected to the exhaust gas storage. The invention can ensure the integrity of the containment vessel after a serious accident and prevents the radioactivity from being discharged into the atmosphere to cause harm to the environment and personnel.

Description

technical field [0001] The invention belongs to the design technology of nuclear power plants, and in particular relates to a comprehensive system for pressure relief, filtration and discharge of containment shells. Background technique [0002] The overall goal of nuclear safety is to ensure the safety of individuals, society and the environment by establishing and maintaining an effective radiological protection barrier. The design of nuclear power plants should ensure that the radioactive dose discharged to the environment is kept as low as reasonably possible under design basis accidents or even severe accidents, and the radioactive consequences should be minimized. [0003] The containment of nuclear power plants is the last barrier to prevent the release of radioactive products into the environment. When a serious accident of core melting occurs, due to the continuous increase of steam and the non-condensable gas generated by the reaction between the molten core and c...

AI Technical Summary

Problems solved by technology

[0007] However, due to the large population of our country and the relatively dense distribution of inland population, inland nuclear power plants have higher requirements for the limitation of radioactive effluents, especially the technical trend of zero discharge of radioactive gases after severe accidents, which puts forward new requirements for the design of inland nuclear power plants. challenge

Images