USED NUCLEAR FUEL TANK REAL TIME MONITORING SYSTEM AND METHOD THEREOF

PROBLEM TO BE SOLVED: To provide a used nuclear fuel tank real time monitoring system and a method thereof for displaying a dangerous water level of a nuclear fuel tank by measuring state information of a used nuclear fuel tank by a sensor in the tank, additionally inputting a configuration state of a nuclear fuel, burn-up history information, or the like and calculating nuclear fuel decay heat and current state information, such as a source term.SOLUTION: The used nuclear fuel tank real time monitoring system includes: a measurement part for measuring state information including the temperature, water level and pressure information of the nuclear fuel tank with a sensor installed inside the tank; an input and storage part for inputting and storing configuration information of a used nuclear fuel, history information relating to burning and a normal value and a limit value relating to the current state information; a calculation and determination part for calculating the current state information of the used nuclear fuel on the basis of the state information measured by the measurement part and the configuration information and the history information stored in the input and storage part and determining a dangerous water level by comparing the current state information with the limit value of the dangerous water level; and a display part for displaying the current state information calculated by the calculation and determination part and displaying the determined dangerous water level.