Protective device and method for uranium enrichment plant material container disassembly and assembly operation

Abstract

Relating to the technical field of material feeding and taking in uranium enrichment plants, the invention specifically discloses a protective device and method for uranium enrichment plant material container disassembly and assembly operation, and can achieve evacuation blow-wash on a container connecting tube during disassembly and assembly of a material container in a material feeding and taking plant. According to the protective device provided by the invention, in the whole disassembly and assembly process, the residual harmful gas in the container connecting tube does not escape into theplant, and is condensed by a freezer of the device, and is further captured and purified by an adsorption tower and a filter, thus greatly reducing the radioactive contamination of the plant.

Description

technical field [0001] The invention belongs to the technical field of feeding and retrieving materials in uranium enrichment plants, and in particular relates to a protection device and method for disassembling and assembling material containers of uranium enrichment plants. Background technique [0002] In previous uranium enrichment projects, the protective measures adopted for the disassembly and assembly of material containers in the supply and reclaim plant are as follows: figure 1 As shown in the figure, after feeding and retrieving, the material container needs to be disconnected from the system, and the connecting pipe of the container needs to be disassembled manually. Since the metal hose connected between the container and the material supply and retrieval system will directly communicate with the environment of the factory building during disassembly, the residual harmful gas containing uranium and fluorine in the connecting pipe will escape from the connecting ...

AI Technical Summary

Problems solved by technology

[0005] (1) The connecting pipe of the container is in a positive pressure state after being broken, and the residual radioactive gas first diffuses into the factory building, and then is pumped into the local exhaust duct. During this process, the possibility of workers inhaling or being contaminated with radioactive substances is very high Large, poor security protection effect

[0006] (2) In order to ensure the suction effect, it is necessary to ensure that the wind speed at the hood is not less than 1m / s. At the same time, due to the large number of supply and retrieval containers in the factory building, the number of local exhaust hoods is large, and the air leakage coefficient of the local exhaust system is large. The load of the exhaust fan is very large, the power of the fan is large, and the operating cost is high

When disassembling the container, it is necessary to move the suction hood to the vicinity of the disassembly position, and the disassembly and assembly operation of the container is relatively frequent, so a certain amount of manpower is wasted and the operation is inconvenient

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