Novel container radiation protection device with variable shielding layers

Abstract

The invention provides a novel container radiation protection device with variable shielding layers. The novel container radiation protection device comprises a frame-shaped shielding body fixedly arranged inside a container, and four variable shielding layer structure modules rotationally arranged outside the container; the container is of a box-shaped structure with the wide middle and the two narrow ends; the frame-shaped shielding body is attached to the container wall in the length direction of the container; a space is formed between the frame-shaped shielding body and the container wallin the width direction of the container; four vertically-arranged rotating shafts are arranged on the two outer walls of the container in the length direction in total; the four variable shielding layer structure blocks are attached to the narrow container walls of the container when being combined, and cuboid structures areformed by the four variable shielding layer structure blocks and the outer walls, not covered with the variable shielding layer structure blocks, of the container. On the premise that the size of an existing container and a corresponding transportation, loading and unloading system are not changed, a thicker shielding layer for a radioactive source in the container in the width direction is achieved, the thickness and the material of the shielding layers can be freelyadjusted according to the radiation intensity, and the shielding thickness and the material needed under the corresponding source intensity.

Description

technical field [0001] The invention belongs to the field of radiation protection, in particular to a novel 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...

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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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