Serious accident waste liquid collection and treatment system for underground nuclear power station

Abstract

The invention relates to the technical field of underground nuclear power stations. The invention discloses a serious accident waste liquid collection and treatment system for an underground nuclear power station. The system comprises a serious accident waste liquid treatment chamber connected with a reactor chamber through a drainage pipeline, wherein a conventional treatment area and a movable treatment area are arranged in the serious accident waste liquid treatment chamber; a collection platform is arranged in the conventional treatment area; a waste liquid collection and storage tank communicated with the drainage pipeline is arranged on the collection platform; a conventional waste liquid treatment system communicated with the bottom of the waste liquid collection and storage tank through a first liquid discharge pipeline is arranged below the collection platform; and a multi-layer movable waste liquid treatment repository, up-to-standard discharge boxes and a plurality of movable waste liquid treatment devices circulating in the movable treatment area are arranged in the movable treatment area. According to the system, radioactive waste liquid in the reactor chamber can be discharged in an organized mode in the case of the serious accident, a large amount of accessible medium-frequency radioactive waste liquid can be contained, and the radioactivity safety of the underground nuclear power station is guaranteed.

Description

technical field [0001] The invention relates to the technical field of underground nuclear power plants, in particular to a system for collecting and treating waste liquid from severe accidents in underground nuclear power plants. Background technique [0002] The main sources of radioactive waste liquid in nuclear power plants are chemical waste liquid, process waste liquid, ground drainage, washing waste water, decontamination waste liquid and other waste liquids. At present, my country's nuclear power plants have set up waste liquid treatment systems using different disposal processes for the radioactive waste liquid generated during normal operation of nuclear power plants and anticipated accidents. However, under severe accidents, the total amount of waste liquid produced by various functional systems of the nuclear power plant reactor building is about 3300-5700m 3 , the emergency water flow is about 20m 3 / h, the amount of waste liquid generated is huge, and there i...

AI Technical Summary

Problems solved by technology

Although the pressure on the disposal of the accidental waste liquid has been relieved, the radioactive waste liquid has already caused serious leakage, and the damage is irreparable

[0004] In underground nuclear power plants, the reactor building and other auxiliary buildings are placed underground or in the mountains. If the storage and treatment of waste liquid in serious accidents are not considered in the overall planning and design stage of the underground nuclear power plant, once a serious accident occurs, immeasurable harm will be caused.

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