Chapter 1 Introduction 1.1 Classifications of the CRMS 1.1.1 Control rod position measurement sensor 1.1.2 CRMS of the inductance type 1.1.3 CRMS of the non-inductance type 1.1.4 Scope of this introduction 1.2 Principles of the CRMS 1.2.1 Principles of the CRMS of the inductance type 1.2.2 Principles of the CRMS of the ultrasonic type 1.2.3 Principles of the CRMS of the magnetostrictive type 1.2.4 Principles of the CRMS of the fixed in-core neutron detector type 1.2.5 Principles of the CRMS of the reed switch type 1.2.6 Principles of the CRMS of the selsyn type 1.2.7 Principles of the CRMS of the capacitance type 1.2.8 Principles of the CRMS of other types 1.3 Experimental and numerical validation of the CRMS 1.3.1 Calibration of the CRMS 1.3.2 Validation of static measurement of the CRMS 1.3.3 Validation of scram performance test of the CRMS 1.3.4 Numerical Validation of the CRMS 1.4 Summary to this Chapter Chapter 2 Control rod position measurement by two-electrode capacitance sensor in nuclear heating reactor 2.1 Introduction to this Chapter 2.2 Theoretical model 2.2.1 Sensor structure 2.2.2 Electric model 2.3 Experiment facility description 2.3.1 Measurement circuits 2.3.2 Measurement system 2.3.3 Experiment and calibration bench 2.4 Results and discussion 2.4.1 Ungrounded control rod position measurement 2.4.2 Grounded control rod position measurement 2.4.3 Measurement experiences 2.5 Summary to this Chapter Chapter 3 Control rod position measurement with helix-electrode capacitance sensor in nuclear heating reactor 3.1 Introduction to this Chapter 3.2 Sensor theory 3.2.1 Sensor structure 3.2.2 Finite element model of the sensor 3.2.3 Electric model of the sensor 3.3 Experiment for ungrounded/grounded control rod position 3.3.1 Capacitance measurement circuit 3.3.2 Experimental facility 3.3.3 Calibration of the helix-electrode capacitance sensor 3.4 Results and discussion 3.4.1 Ungrounded control rod position measurement 3.4.2 Grounded control rod position measurement 3.5 Summary to this Chapter Chapter 4 In-vessel capacitance control rod position measurement sensor in NHR-200 with PEEK material
4.1 Introduction to this Chapter 4.2 Sensor description 4.2.1 In-vessel capacitance sensor 4.2.2 Structural parameters 4.2.3 Dynamic response of ICRMS with the exciting frequency 4.3 Theoretical model 4.3.1 Electric theoretical model 4.3.2 Capacitance measurement correlation 4.3.3 FEM model 4.4 Experimental system design of the ICRMS 4.4.1 PEEK material properties 4.4.2 In-house measuring circuits 4.4.3 Rod position calibration test bench 4.5 Results and discussion 4.5.1 Results analysis 4.5.2 Error analysis 4.5.3 Further parameters analysis 4.5.4 Recommendations 4.6 Summary to this Chapter Chapter 5 Static model and characteristics of the capacitance control rod position measurement sensor in NHR-200 5.1 Introduction to this Chapter 5.2 Static mathematical model 5.2.1 Physical description and model assumptions 5.2.2 Ungrounded metal medium model 5.2.3 Grounded metal medium model 5.2.4 Dielectric medium model 5.2.5 Eccentricity model 5.3 Experimental CCRMS test system 5.3.1 Double-helix structure CCRMS 5.3.2 Control rod measured rod 5.3.3 Grating linear displacement sensor 5.3.4 Capacitance measuring instrument and data processing software 5.3.5 Commercial 6500B impedance analyzer and in-house capacitance box 5.4 Results and discussion 5.4.1 Error analysis of the experiment data 5.4.2 Experimental study on measurement conditions 5.4.3 Experimental study on the sensor end effect 5.4.4 Experimental study on the ungrounded metal medium measured rod 5.4.5 Experimental study on the grounded metal medium measured rod 5.4.6 Experimental study on the dielectric medium measured rod 5.4.7 Experimental study on the dielectric medium with eccentricity 5.4.8 Eccentricity FEM simulation on the dielectric medium 5.4.9 Static measurement experiment of the CCRMS 5.4.10 Static characteristics of the CCRMS 5.5 Summary to this Chapter Chapter 6 Dynamic model and characteristics of the capacitance control rod position measurement sensor system in NHR-200 6.1 Introduction to this Chapter 6.2 Dynamic mathematical model of the sensor 6.2.1 Sensor dynamic model 6.2.2 Time constant
6.2.3 Dynamic mathematical model of the step-in/step-out mode 6.3 Experimental CCRMS test system 6.3.1 Double-helix structure CCRMS 6.3.2 Control rod measured rod 6.3.3 Grating linear displacement sensor 6.3.4 Capacitance measuring instrument 6.3.5 Commercial 6500B impedance analyzer and in-house capacitance box 6.4 Results and discussion 6.4.1 Analysis on the measuring circuits 6.4.2 Numerical calculation displacement step determination 6.4.3 Velocity dynamic response numerical calculation 6.4.4 Scramming dynamic response numerical calculation 6.4.5 Scramming time test of the CCRMS 6.4.6 Scramming performance measurement test of the CCRMS 6.4.7 Dynamic tests of the capacitance measuring instrument 6.5 Summary to this Chapter Chapter 7 Future of the capacitance control rod position measurement sensor 7.1 Introduction to this Chapter 7.2 Emerging areas on the capacitance control rod position measurement sensor 7.2.1 Small nuclear power reactors 7.2.2 Variable power operating conditions of nuclear power plant 7.2.3 Non-contact measurement of the high temperature liquid level 7.3 Other issues 7.4 Summary to this Chapter References Acknowledgments
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