Hybrid safety injection tank system pressurized with safety valve of pressurizer

Abstract

A hybrid safety injection tank system pressurized with a safety valve of a pressurizer. The hybrid safety injection tank system has functions of a low pressure safety injection tank and a high pressure reactor core injection tank of a nuclear reactor emergency reactor core cooling system, in the hybrid safety injection tank system, an electrically operated valve or a pneumatic valve mounted in a conventional hybrid safety injection tank system and requiring use of an attached special battery for preventing power failure of a nuclear power plant is replaced, a safety valve allowing automatic operation in response to pressure difference is mounted on a pressure-equalizing pipe capable of realizing balance of pressure between the low pressure safety injection tank and the high pressure pressurizer, the hybrid safety injection tank system does not use electricity, so that even if under the circumstance of the occurrence of power failure of the nuclear power plant, effectively operation is still realized and the possibility of reactor core damage is reduced.

Description

technical field [0001] The present invention relates generally to a hybrid safety injection tank system that has the functions of a low-pressure safety injection tank and a high-pressure core makeup water tank of a nuclear reactor emergency core cooling system, and more particularly relates to A hybrid type safety injection tank system pressurized by a safety valve of a pressurizer, the hybrid type safety injection tank system is operated by using a safety valve configured such that when high pressure steam from a pressurizer is used for When the hybrid safety fill tank is pressurized at low pressure, the safety valve is able to automatically open in response to a pressure differential without the use of electrical power (except conventional motorized isolation valves), enabling efficient operation even This is also true in the event of a power outage at a nuclear plant, and reduces the likelihood of a core failure. Background technique [0002] In general, safety injection...

AI Technical Summary

Problems solved by technology

However, this configuration has the disadvantage that when the nuclear reactor has a low-pressure accident, the injection capacity of the core make-up tank alone is insufficient compared to the capacity required for the safety of the nuclear reactor

However, no device or method that can meet the above requirements has been proposed or provided so far

Images