Authors:
Ji Park
;
Hye Jo
;
Ho Lee
and
Man Gyun Na
Affiliation:
Department of Nuclear Engineering, Chosun University, 10 Chosundae 1-gil, Dong-gu, Gwangju, Republic of Korea
Keyword(s):
Optimal Mitigation Actions, Causal Inference, Causal Impact, Loss of Coolant Accident, Nuclear Power Plants.
Abstract:
In nuclear power plants, ensuring safety during abnormal situations is of paramount importance. This study focuses on the loss of coolant accident, a design basis accident, and applies the use of causal inference to recommend optimal mitigation actions. The study utilizes data collected from the compact nuclear simulator to analyze the effectiveness of various actions, including the activation of charging pumps and adjustments to control valves. The results indicate that the simultaneous activation of charging pumps #2 and #3 yields the highest cumulative absolute effect on maintaining the pressurizer water level. Additionally, keeping the charging control valve and letdown back pressure valve fully open (100%) also contributes significantly to managing the pressurizer water level during loss of coolant accident scenarios. These findings provide valuable insights into improving nuclear power plant safety by guiding operators in choosing the most effective mitigation strategies during
LOCA situation.
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