A method for simulating hydrogen production in the process of radioactive solid waste disposal

A technology for solid waste and simulation research, applied in radioactive purification, nuclear engineering, dosimeters, etc., to achieve high test safety and strong test controllability

Active Publication Date: 2022-07-29
CHINA INST FOR RADIATION PROTECTION
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, during the disposal of solid waste, there is no ventilation system in the disposal cells in the disposal site. Whether the HIC disposal scheme can ensure that the gas released by HIC does not affect the safe disposal of HIC needs to be verified through experiments and theoretical calculations. influences

Method used

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  • A method for simulating hydrogen production in the process of radioactive solid waste disposal
  • A method for simulating hydrogen production in the process of radioactive solid waste disposal
  • A method for simulating hydrogen production in the process of radioactive solid waste disposal

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Experimental program
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Embodiment Construction

[0039] The specific embodiments of the present invention will be further described below with reference to the accompanying drawings.

[0040] Exemplary simulated high-density polyethylene high-integrity containers emulating the methods of the present invention are: Figure 2-5 As shown, it includes tank 1, tank steel pipe 2, first 1 / 2 VCR joint 3, second 1 / 2 VCR joint 4, bellows 5, bellows metal sealing valve 6, ferrule joint 7, ferrule nut 8, Tank nut 9, metal washer 10, lifting ring 11, third 1 / 2 VCR joint (not shown in the figure).

[0041] The tank body 1 is welded on the outside of its top end surface with a tank body steel pipe 2 perpendicular to the end surface. The end face is a stainless steel plate, which is connected to the lower end portion of the tank body 1 by welding. A lifting ring 11 is set on the outside of the end face, through which the simulated waste resin (which is the unused resin of the same type) and a sealed and connected simulated container can b...

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Abstract

The invention belongs to the technical field of radioactive waste treatment, and relates to a method for simulating and studying hydrogen generation in the process of disposing of radioactive solid waste. The described method is to use a simulated sample simulating a radioactive solid waste in a simulated container simulating a high-density polyethylene high-integrity container to carry out research in the following steps: (1) adding the simulated sample into the simulated container (2) irradiate the described simulated container to the required dose; (3) measure the pressure of the gas in the described simulated container and analyze the gas atmosphere to obtain the average hydrogen release rate of different disposal time periods and gas composition ratios. The method of the invention can simulate and study the generation of hydrogen during the disposal of radioactive solid waste, and provide input for the theoretical calculation of the disposal of high-density polyethylene high-integrity containers. Excessive concentrations in high bulk container disposal environments can cause explosions.

Description

technical field [0001] The invention belongs to the technical field of radioactive waste treatment, and relates to a method for simulating and studying hydrogen generation in the process of disposing of radioactive solid waste. Background technique [0002] High-density polyethylene high-integrity container (HDPE-HIC, referred to as HIC) is made of high-density polyethylene material by rotational molding, and has high chemical stability, thermal stability, biodegradation resistance and radiation resistance. In nuclear power plants HICs are used to fill radioactive wet solid wastes such as waste resins. After the HIC is filled with radioactive wet solid waste, it is first sent to the nuclear power plant solid waste temporary storage warehouse for temporary storage, and finally sent to the disposal site for disposal. In the process of temporary storage and disposal, the waste resin and its adsorbed water filled in the HIC are decomposed by the irradiation of the radionuclides...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01T1/02G21F9/28
CPCG01T1/02G21F9/28
Inventor 赵帅维李洪辉贾梅兰毛亮闫晓俊刘伟杨彪刘建琴
Owner CHINA INST FOR RADIATION PROTECTION
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