System and method for monitoring spent fuel pool of nuclear power plant

Abstract

The invention discloses a system and a method for monitoring a spent fuel pool of a nuclear power plant. The system comprises at least one continuous temperature measuring instrument, at least one continuous liquid level measuring instrument and a main monitoring control machine, wherein the at least one continuous temperature measuring instrument and the at least one continuous liquid level measuring instrument are arranged on the spent fuel pool, output ends of the at least one continuous temperature measuring instrument and the at least one continuous liquid level measuring instrument are in communication connection with the main monitoring control machine, the at least one continuous temperature measuring instrument is a safety-level continuous temperature measuring instrument, and the at least one continuous liquid level measuring instrument is a safety-level continuous liquid level measuring instrument. Compared with the prior art, the system and the method have the effects as follows: the liquid level and temperature of the spent fuel pool are monitored by the liquid level and temperature measuring instruments adopting the safety-level continuous monitoring mode, and monitoring and control of the spent fuel pool after serious accidents of the nuclear power plant are met.

Description

technical field [0001] The invention belongs to the technical field of nuclear power plants, and more specifically, the invention relates to a monitoring system and method for spent fuel pools of nuclear power plants. Background technique [0002] During the normal operation and maintenance and refueling period of the nuclear power plant, the spent fuel pool (Spent Fuel Pool, SFP) is mainly used to store the spent fuel components removed from the core, and the decay heat of the spent fuel components stored in the SFP is exported by means of water circulation cooling. , and then return to the pool after exchanging heat through the heat exchanger to continuously export the heat in the SFP to maintain the pool water temperature within an acceptable range. In order to ensure that the water level of the SFP is above the top of the spent fuel grid and to continuously monitor the temperature of the pool water in the spent fuel pool, the SFP is equipped with a monitoring system cons...

AI Technical Summary

Problems solved by technology

[0011] As mentioned above, the existing temperature instruments and liquid level instruments cannot meet the functional requirements of a serious accident in a nuclear power plant in terms of power supply, installation, and measurement channel settings. Serious consequences of the unavailability of the spent fuel pool monitoring system, and the possibility of exposed or damaged spent fuel components

Images