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

A protective device and container technology, applied in chemical instruments and methods, separation methods, dispersed particle filtration, etc., can solve the problems of high operating costs, large load of local exhaust fans, and inconvenient operation, so as to reduce radioactive pollution and construction investment , the effect of reducing manpower waste

Inactive Publication Date: 2019-04-19
中核第七研究设计院有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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

Method used

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

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Embodiment

[0067] Such as image 3 As shown, a protective device for the disassembly and assembly operation of the material container in the uranium enrichment plant is used to separately connect the container connecting pipe A2-1 and the container when the material container A1-1 and the material container B1-2 are disassembled in the material supply and reclaiming plant. Connect the tube B2-2 for evacuation and purging. Taking the disassembly and assembly of the material container A1-1 as an example, the protective device A includes the breach valve A11-1 for purging, the condenser A5-1, the small cryogenic box A6-1, the adsorption tower A7-1, and the filter A8 -1. Jet pump A9-1, vacuum unit A10-1 for evacuation.

[0068] The container connection pipe A2-1 is connected in series with the vent valve A11-1 for purging, the condenser A5-1, the adsorption tower A7-1 and the filter A8-1 in sequence, and then connected with the jet pump A9-1 and the filter A8-1 respectively. Vacuum unit A1...

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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 ...

Claims

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Application Information

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IPC IPC(8): B01D5/00B01D53/00B01D53/02B01D46/00G21F9/02
CPCB01D46/00B01D53/002B01D53/02G21F9/02
Inventor 吉辉田静萍车军农国卫张志宝
Owner 中核第七研究设计院有限公司
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