NUCLEAR POWER PLANT AND SHIELDING GAS DEVICE

摘要

Disclosed are a method and a system for regulating the concentration of oxygen in a coolant of a reactor facility comprising a reactor, a coolant located in said reactor, a gas system, a mass transfer apparatus, a disperser and a sensor for sensing the oxygen concentration in the coolant. The method includes the following steps, carried out by the system: evaluating the oxygen concentration; comparing the oxygen concentration with a permissible value; evaluating the change in oxygen concentration; comparing, in the event of a decrease in concentration, the size and/or rate of the decrease against corresponding threshold values; activating a mass transfer apparatus in the event that the size and/or rate of the decrease in oxygen concentration is greater than the threshold value; feeding an oxygen-containing gas from a gas system into the space around the coolant and/or activating a disperser in the event that the size and/or rate of the decrease in oxygen concentration is less than the threshold value. Technical result: rendering regulation of the concentration of oxygen in a coolant more controllable, and increasing the safety and service life of a reactor facility.