[en] A calorimetric test is the basis for determining the reactor thermal power level in a nuclear power plant, and feedwater flow is the primary contributor to this calorimetric test. Therefore, highly reliable and accurate feedwater flow measurements allow the nuclear instruments to more accurately reflect true reactor power, ensuring that the reactor core can be operated at the licensed reactor thermal rating. The Westinghouse Leading Edge Flow Meter (LEFM) provides this accuracy in the feedwater flow measurement