Boundary control device for radioactive contamination isolation area of nuclear power plant

Abstract

The invention relates to a boundary control device for a radioactive contamination isolation area of a nuclear power plant, and belongs to the technical field of radioactive contamination protection. The boundary control device comprises a plurality of isolation assemblies, wherein the isolation assemblies are detachably and fixedly connected, the boundary control device is of a seamlessly-arranged solid structure as a whole, and the total length of the boundary control device is adjusted according to the number of the isolation assemblies; the included angle formed between every two adjacent isolation assemblies can be rotationally adjusted by 360 degrees, and warning mark assemblies are formed on the isolation assemblies; the radioactive contamination isolation area which is used for surrounding disassembly equipment is formed among the plurality of isolation assemblies in a matched mode, and the boundary control device has the functions of building the radioactive contamination isolation area and controlling the boundary of the radioactive contamination isolation area and has an external warning effect; and in addition, the boundary of the radioactive contamination isolation area can be effectively controlled, the site contamination risk is effectively reduced, the contamination risk of workers is reduced, and the exposure dose of the workers in the surrounding area is reduced.

Description

technical field [0001] The invention relates to the technical field of radioactive pollution protection, in particular to a boundary control device for a radioactive pollution isolated area of ​​a nuclear power plant. Background technique [0002] Nuclear power plants usually need to dismantle the primary circuit pipeline opening equipment during equipment maintenance and overhaul. In order to avoid the spread of radioactive loose pollution, it is necessary to build a radioactive pollution isolation area. Conventional pollution isolation areas are usually bounded by warning tapes and isolation piles, so there are the following problems in the working process: [0003] (1) The stability of isolation piles is low, the boundary integrity cannot be guaranteed, and radioactive pollution is easy to spread and cause site pollution; [0004] (2) There is no rigid entity on the boundary, and there is a risk of human contamination when non-working group members perform other work in ...

AI Technical Summary

Problems solved by technology

[0003] (1) The stability of isolation piles is low, the boundary integrity cannot be guaranteed, and radioactive pollution is easy to spread and cause site pollution;

[0004] (2) There is no rigid entity on the boundary, and there is a risk of human contamination when non-working group members perform other work in the adjacent area;

[0005] (3) The dose of the disassembled equipment is too high during on-site storage, which has a great impact on the environmental dose rate of the surrounding area, which may cause unnecessary dose exposure to non-staff personnel, which does not comply with the ALARA principle

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