Radiation-prevention hoisting hole spout plug structure

Abstract

The invention discloses a radiation-prevention hoisting hole spout plug structure. The radiation-prevention hoisting hole spout plug structure comprises a plug hole in concrete and a hoisting spout plug installed in the plug hole, and the plug hole is in a ladder shape as a whole, and comprises an upper ladder and a lower ladder; a stainless steel covering structure is arranged on the inner wall of the plug hole. By arranging the stainless steel covering structure matched with the outer wall of the hoisting spout plug in the plug hole in the concrete outside the hoisting spout plug, the stainless steel covering structure is isolated from the surrounding environment, and radiation substances are better prevented from diffusing outwards. Besides, the concrete outside the hoisting spout plugis cast in a ladder shape, and generation of vertical through seams for radiation leakage is prevented. Besides, the stainless steel covering structure is also arranged on the outer wall of the hoisting spout plug, and the high requirements for radiation prevention and leakage prevention of the hoisting spout plug structure are met. The radiation-prevention hoisting hole spout plug structure is simple and compact in structure, convenient to install, flexible to operate, high in thermal efficiency, high in radiation-prevention and leakage-prevention capability, wide in application range and long in service life.

Description

technical field [0001] The invention relates to the technical field of radiation protection, and in particular to a radiation protection hoisting hole plug structure. Background technique [0002] As a multidisciplinary large-scale public research platform, the spallation neutron source will have a significant impact on the fields of physics, chemistry, life science, material science, and new energy development. However, due to the high radiation of neutrons, its The use will cause serious radiation pollution to the environment. In order to avoid radiation pollution, the radiation protection requirements of the neutron source project are very strict. During the operation of the neutron source, a lot of radiation materials are piled up in the basement of the target station. area, water storage tank area, etc. The area related to the heavy water and light water cooling system has a certain radiation dose. In addition to the physical requirements on the shield to ensure persona...

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Problems solved by technology

[0002] As a multidisciplinary large-scale public research platform, the spallation neutron source will have a significant impact on the fields of physics, chemistry, life science, material science, and new energy development. However, due to the high radiation of neutrons, its The use will cause serious radiation pollution to the environment. In order to avoid radiation pollution, the radiation protection requirements of the neutron source project are very strict. During the operation of the neutron source, a lot of radiation materials are piled up in the basement of the target station. area, water storage tank area, etc. The area related to the heavy water and light water cooling system has a certain radiation dose. In addition to the physical requirements on the shield to ensure personal safety, this area has high requirements for the cleanliness of the ground. The floor of the industrial plant cannot meet the requirements, so the method of stainless steel cladding is used to meet the cleanliness requirements

When the lifting hole is encountered during the assembly of cladding panels, the existing lifting hole plug structure does not have radiation protection performance and cannot effectively avoid radiation pollution. Therefore, it is necessary to design a radiation-proof lifting hole plug structure to achieve High requirements for anti-radiation and anti-leakage during construction of stainless steel cladding

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