Sodium fire pressure relieving device and method

Abstract

The invention relates to nuclear reactor safety equipment, and aims to solve the problem of no usable mature sodium fire pressure relieving measures in China. The invention also provides a sodium fire pressure relieving device and method. The sodium fire pressure relieving device comprises a decorative panel, a sealing cover plate and a cover plate frame; the decorative panel is fixedly connected with the cover plate frame by a wall body penetrating part; The upper edge of the sealing cover plate is connected with the upper frame of the cover plate frame by a connector; the sealing cover plate can rotate by taking the connector as a shaft to be opened and closed; a permanent magnet is arranged at the lower edge of the sealing cover plate; the lower frame of the cover plate frame is provided with an attracting material capable of attracting the permanent magnet. The sodium fire pressure relieving device and method adopt a passive design and are high in reliability; the airtightness is good, and the possibility that radioactive sodium aerosol leaks to the environment is effectively reduced; the damage to a fast reactor facility at the moment of the initial sodium fire is avoided and the safety of the fast reactor is ensured.

Description

technical field [0001] The invention relates to nuclear reactor safety equipment, in particular to a sodium fire pressure relief device and method. Background technique [0002] Sodium fire safety is an important content of fast reactor safety considerations. Since the fast reactor sodium process room is designed with the sealing method, the sealing performance of the process room is good. Therefore, when a sodium fire accident occurs, especially in the early stage of a foggy sodium fire, the temperature and pressure of the room will rise rapidly, which may cause damage to the walls of the process room and ventilation pipes. and other damage to the enclosure structure. [0003] Internationally, the instantaneous pressure of the initial stage of sodium fire (especially foggy sodium fire) is all very important, but no specific pressure relief method and used device are mentioned in the open literature. [0004] At present, the existing fast reactor scheme in my country adopt...

AI Technical Summary

Problems solved by technology

However, since there are no mature sodium fire pressure mitigation measures that can be directly applied in China, and there is no specific technology publicly available for reference in the world, in this case, if we want to avoid the initial stage of sodium fire (especially foggy sodium fire) The instantaneous pressure of the fast reactor will seriously damage the fast reactor facilities, and to ensure the safety of the fast reactor when the sodium fire accident occurs to the greatest extent, it is necessary to develop an effective sodium fire pressure relief device and method

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