Reactant Coolant Pump Speed Sensors

Our speed and phase sensors monitor the rotational speed and direction of the reactor coolant pump. They are designed, built, and tested in accordance with U.S. Nuclear Regulatory Commission (NRC) requirements for Class 1E safety-rated equipment under the Leonardo DRS Naval Power Systems’ 10 CFR Part 50 Appendix B nuclear quality assurance program. Their all-stainless-steel construction allows the sensors to operate continuously in the most extreme environments. 

The sensors is a magnetic sensor that self generates an AC signal output with frequency and or amplitude proportional to pump rotational speed. The ferromagnetic pole pieces that are on a cylinder attached to the pump rotor produce a pulse output when they pass by the sensor that is installed in the well.