Reactor Safety System

Abstract

The invention discloses a reactor safety system. The reactor safety system comprises a containment, an emergency residual heat removal system, an emergency gas treatment system and a primary loop overpressure protection system, wherein the containment comprises a reactor roof protection room and a reactor plant; a pressure container and a main heat exchanger are arranged inside the reactor roof protection room; an interlayer space is formed between the reactor roof protection room and the reactor plant; the emergency residual heat removal system performs heat exchange between desalted water and a reactor core in a passive manner so as to guide out heat of the reactor core; the emergency gas treatment system is arranged inside the interlayer space and connected with the reactor roof protection room; the primary loop overpressure protection system is arranged inside the reactor roof protection room. According to the reactor safety system, a reactor can achieve functional requirements onresidual heat removal and radioactive containment under normal operation or accident conditions, so that the nuclear safety is guaranteed.

Description

technical field [0001] The invention relates to the technical field of nuclear power, in particular to a reactor safety system. Background technique [0002] The auxiliary water supply system of the existing nuclear power plant is equipped with water storage tanks, feed water pumps and other equipment. When the main water supply system fails, the water in the water storage tank is used to supply water to the secondary side of the steam generator by the feed water pump, thereby deriving the heat of the reactor and realizing auxiliary water supply. The water supply system is a safety function for exporting core heat. However, once the feed water pump fails, the safety function of the auxiliary feed water system will be lost. In addition, the auxiliary water supply system needs to supply water to the steam generator during start-up, hot standby, and hot shutdown conditions, which will cause the water level of the water storage tank to drop, and there is a risk of losing the sa...

AI Technical Summary

Problems solved by technology

When depressurizing, the whole circuit is mainly carried out, and there is no targeted depressurization for local overpressure parts, and the response is not fast

[0005] In addition, the containment of the existing nuclear power plant has a double-layer structure. The inner steel structure is used to bear pressure and contain radioactivity, and the outer concrete structure is used for external event protection and radiation shielding. The inner and outer interlayer spaces are small, and the inner steel containment contains Large-scale equipment and spaces such as reactors, steam generators, and refueling pools are bulky, require a large amount of materials, and are expensive

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