主催: The Japan Society of Mechanical Engineers
会議名: 第30回 原子力工学国際会議（ICONE30）
開催日: 2023/05/21 - 2023/05/26
The continuous measurement of control rod positions can be achieved by the capacitance rod position sensor (CRPS), which can be used in the control rod hydraulic drive system (CRHDS). CRPS exists fringe effect in actual use, which will cause measuring error in the inlet section of the sensor. Fringe effect experiments of CRPS are carried out in this paper, and finite element model is constructed by COMSOL Multiphysics. Numerical simulation results are validated by experimental results. The quantitative characterization of fringe effect of grounding type CRPS is conducted, and the fringe error is limited by the method of resetting the starting point of rod positions. Results show that the fringe error can be limited in ±0.2 mm. This paper can provide a guideline for the engineering design of CRPS.
