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Radiation shielding container and preparation method thereof

A shielding container and radiation shielding technology, applied in the field of nuclear fuel cycle and material radiation protection, can solve the problem of no shielding container for long-term storage of isotopes, and achieve the effects of avoiding dose hot spots, low material utilization, and improving production efficiency

Active Publication Date: 2019-12-27
NUCLEAR POWER INSTITUTE OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the prior art, there is no relevant technology about shielded containers for long-term storage of isotopes

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Embodiment 1: a radiation shielding container, the radiation shielding container includes two parts: a container cover and a container cylinder, both of which are a sandwich structure shielding container, the shielding container shell is made of stainless steel, the thickness of the inner layer of stainless steel is 10mm, and the thickness of the outer layer of stainless steel is 5mm , the middle layer is a heat-resistant and radiation-resistant neutron shielding material, with a thickness of 120mm, and the proportion of each component in the boron-containing epoxy resin is: epoxy resin: 50 parts, boron carbide 0.5 parts, aluminum hydroxide powder: 49.5 parts .

[0028] A preparation method of a radiation shielding container, the first step is shell processing: processing a shielding container cylinder and a shielding container cover shell, and a pouring port is reserved; the second step of ingredients: weighing a certain amount of epoxy resin according to the formula, a...

Embodiment 2

[0029] Embodiment 2: a radiation shielding container, the radiation shielding container includes two parts: a container cover and a container cylinder, both of which are sandwich structure shielding containers, the shielding container shell is stainless steel, the inner layer stainless steel thickness is 2mm, and the outer layer stainless steel thickness is 2mm , The middle layer is a heat-resistant and radiation-resistant neutron shielding material with a thickness of 60mm. The proportions of each component in the boron-containing epoxy resin are: epoxy resin: 30 parts, boron carbide 0.5 parts, aluminum hydroxide powder: 69.5 parts .

[0030] A preparation method of a radiation shielding container, the first step is shell processing: processing a shielding container cylinder and a shielding container cover shell, and a pouring port is reserved; the second step of ingredients: weighing a certain amount of epoxy resin according to the formula, average Boron carbide powder with ...

Embodiment 3

[0031] Embodiment 3: A radiation shielding container, the radiation shielding container includes a container cover and a container cylinder, both of which are shielding containers with a sandwich structure, the shielding container is made of stainless steel, the thickness of the inner layer of stainless steel is 5mm, and the thickness of the outer layer of stainless steel is 10mm. , The middle layer is a heat-resistant and radiation-resistant neutron shielding material with a thickness of 100mm. The proportion of each component in the boron-containing epoxy resin is: epoxy resin: 50 parts, boron carbide 2 parts, aluminum hydroxide powder: 48 parts .

[0032] A preparation method of a radiation shielding container, the first step is shell processing: processing a shielding container cylinder and a shielding container cover shell, and a pouring port is reserved; the second step of ingredients: weighing a certain amount of epoxy resin according to the formula, average Boron carbi...

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Abstract

The invention discloses a radiation shielding container and a preparation method thereof. The radiation shielding container comprises a container cover and a container barrel, which are both shieldingcontainers of a sandwich structure. The radiation shielding container comprises a shielding container housing and a middle layer filling the shielding container housing; the shielding container housing is made of stainless steel, the middle layer is made of a heat-resistant and radiation-resistant neutron shielding material, the shielding container housing is used for shielding gamma rays and providing mechanical strength, and the middle layer is used for providing neutron ray shielding. The method comprises the steps of housing processing, burdening, preliminary mixing, addition of an initiator, pouring, standing curing, seal welding, polishing and cleaning. According to the invention, the influence of plutonium oxide powder storage on environmental radiation can be reduced; by means ofthe radiation shielding container, neutrons and gamma rays generated in the plutonium oxide powder storage process can be effectively shielded, splicing seam dosage hot spots are avoided, and the shielding effect of the container is improved. The preparation method can increase the production efficiency of the shielding container.

Description

technical field [0001] The invention relates to the field of nuclear fuel cycle and material radiation protection, in particular to a radiation shielding container and a preparation method thereof. Background technique [0002] Transuranic isotopes are important nuclear materials in the modern nuclear industry, including isotopes of elements with atomic coefficients greater than 92 such as plutonium and americium. Alpha rays, radioactive aerosols, gamma rays, and spontaneous fission and (α, n) reactions produce neutron rays. The decay of transuranic isotopes will generate heat, with high specific power, and the core temperature of the material is as high as 300°C or more. Long-term storage of uranium isotopes requires consideration of neutron ray protection, gamma ray protection, and heat resistance of shielding materials. Long-term storage of plutonium oxide powder materials has high requirements on shielded containers. There is no technology related to shielded container...

Claims

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Application Information

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IPC IPC(8): G21F5/015G21F1/12
CPCG21F5/015G21F1/125Y02E30/30
Inventor 李圆圆苏功建李统业梁勇陈小军杨静潘小强王宇
Owner NUCLEAR POWER INSTITUTE OF CHINA