A container radiation protection device with variable shielding layer

Abstract

The invention provides a novel container radiation protection device with a variable shielding layer, which includes a frame-shaped shielding body fixedly arranged inside the container and four variable shielding layer structural blocks rotatably arranged outside the container. The box-shaped structure with narrow ends, the frame-shaped shielding body is fitted to the container wall in the longitudinal direction, and there is a space between the frame-shaped shielding body and the container wall in the width direction. There are four vertically arranged rotating shafts, and when the four variable shielding layer structure blocks are combined, they are attached to the narrow wall of the container, and form a cuboid with the outer wall of the container that is not covered with the variable shielding layer structure block structure. The invention realizes a thicker shielding layer in the width direction for the radioactive source in the box without changing the size of the existing container and the corresponding transportation and loading and unloading system, and can freely adjust the thickness and material of the shielding layer according to the radiation intensity, and can be flexible Adjust the required shielding thickness and material for the corresponding source strength.

Description

technical field [0001] The invention belongs to the field of radiation protection, in particular to a container radiation protection device with a variable shielding layer. Background technique [0002] With the continuous deepening of my country's industrialization process, the demand for energy is diversified. Small reactors have broad application prospects due to their advantages in safety, economy, and mobility, and can better adapt to nuclear power systems in remote areas and aerospace nuclear power. systems, military nuclear power platforms, and other development needs. Small-scale reactors have natural advantages such as low investment cost, small capacity, short construction period, and small footprint. They are a good choice to replace small-power thermal power plants. The advantage of small area reduces the difficulty of material transportation and engineering construction. With the continuous development of nuclear energy technology, small reactors can also be us...

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Problems solved by technology

But at the same time, it should also be noted that due to the small volume, while providing more convenience for human beings, small piles are more likely to cause radiation damage to human beings.

Generally, small stacks are loaded in containers for easy movement, and a shielding layer is set around the periphery of small stacks. However, when small stacks are loaded in containers, due to the structure of small stacks and the design of existing rectangular parallelepiped containers, the width of the container will The shielding layer arranged in the direction is relatively weak, it is difficult to reduce the ionizing radiation dose value to the control level stipulated by the state and effectively reduce the exposure dose received by the staff and the surrounding public, and it is impossible to effectively shield the ionizing radiation

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