Marine electrical penetration assembly local shielding structure and shielding method

Abstract

The invention provides a marine electrical penetration assembly local shielding structure and a shielding method. A plurality of layers of honeycomb briquette type local shielding assemblies are additionally arranged in an electrical penetration assembly cylinder, and the honeycomb briquette type local shielding assemblies and a nuclear power ship reactor cabin shield form the electrical penetration assembly local shielding structure which is designed in an electrical penetration-shielding integrated manner and has a complete shielding function. Leakage of penetrating radiation in the reactor cabin to the outside of the reactor cabin caused by drilling of the electrical penetration assembly is reduced to the maximum extent, local shielding of the electrical penetration assemblies of a marine nuclear power platform and a ship nuclear reactor cabin is achieved, and the radiation safety of personnel and equipment outside the reactor cabin is guaranteed. The structure is simple, light in weight, convenient to assemble, low in cost and high in designability. Extra local shielding does not need to be arranged on the periphery of a junction box, the weight reduction effect and the size reduction effect are extremely considerable, and the shielding weight and the shielding size are minimized.

Description

technical field [0001] The invention belongs to the technical field of nuclear radiation protection, and in particular relates to a partial shielding structure and a shielding method of a marine electrical penetrating part. Background technique [0002] Electrical penetrations are special electrical equipment installed on the bulkhead of the reactor compartment for cables to pass through the compartment. It is an important part of the stack structure, together with mechanical penetrations, shield doors, and the main structure of the stack, it constitutes the last physical shield for the radioactive containment of the stack. [0003] These electrical penetrations create a large number of cavities in the reactor cabin shielding, resulting in neutron and γ-ray beam leakage, which seriously threatens the radiation safety of workers and equipment outside the reactor cabin. Therefore, special local shielding must be provided for electrical penetrations to prevent the occurrence o...

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide a partial shielding structure and shielding method for marine electrical penetrations, which are used to reduce the leakage of penetrating radiation in the stack to the outside of the stack caused by the opening of the electrical penetrations

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