Nuclear radiation local shielding structure of nuclear power ship reactor cabin penetrating pipeline

Abstract

The invention discloses a nuclear radiation local shielding structure of a nuclear power ship reactor cabin penetrating pipeline. The nuclear radiation local shielding structure comprises a local shielding structure body made of tungsten alloy, the thickness of the shielding structure body is 3-10cm, a reactor cabin is arranged outside the local shielding structure body, the reactor cabin comprises a reactor cabin inner side wall connected with the local shielding structure body, and a plurality of grillage type grid plates are fixedly installed on the side wall face, close to the outside, of the inner side wall of the reactor cabin. According to the invention, a good shielding effect is achieved for neutrons and gamma rays leaked through penetration of the cabin penetrating pipeline, compared with a traditional local shielding structure, the shielding weight can be reduced by about 2%-10% on the premise that the radiation shielding effect is guaranteed, and the mechanical properties such as impact resistance of the shielding structure are further improved; and support is provided for optimizing the nuclear power radiation shielding weight of the ship, saving the overall nuclear power resource of the ship, ensuring the operation and personnel radiation safety and the like.

Description

technical field [0001] The invention belongs to the technical field of radiation shielding, and in particular relates to a partial nuclear radiation shielding structure for a pipeline passing through the stack of a nuclear power ship. Background technique [0002] Ship nuclear power will inevitably produce radioactivity during operation. In order to ensure the life, health and radiation safety of personnel, and to ensure that the nuclear radiation environment in the cabin is at a level as low as possible, it is necessary to set up a reactor cabin for the radioactivity generated by the reactor and the primary circuit system. shield. There are a large number of system equipment in the stack and the system equipment outside the stack for medium circulation, so there are many pipes passing through the stack and its shielding body, such as main steam pipes, main water supply pipes, ventilation pipes, etc., which will lead to The high-intensity neutrons and gamma rays in the cabi...

AI Technical Summary

Problems solved by technology

There are a large number of system equipment in the stack and the system equipment outside the stack for medium circulation, so there are many pipes passing through the stack and its shielding body, such as main steam pipes, main water supply pipes, ventilation pipes, etc., which will lead to The high-intensity neutrons and gamma rays in the cabin leak out of the reactor cabin through the penetrating part, posing a radioactive threat to the radiation safety of workers outside the reactor cabin

[0003] In view of neutr

Images