Control rod is a primary control part of emergency control and power regulation in nuclear reactor. The main application of it is to control fast change of the reactivity. The theoretical analysis for the worth of control rod is necessary in the stage of design. Based on design requirements, some results are calculated. Firstly, control rod worth with different density of neutron absorber is calculated by MCNP here. Secondly, the study of integral and differential control rod worth is presented in this paper while the control rod is inserted into reactor core and total worth of three rods with different positions are also calculated. Finally, the effect of the axial and radial neutron flux in reactor core which is caused by the control rods is simulated. The simulation results of the control rods meet design requirements for TMSR.
Neutron absorberReactivityControl rod worthNeutron flux
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School of Nuclear Science and Engineering, Beijing Key Laboratory of Passive Safety Technology for Nuclear Energy, North China Electric Power University
Institute of Nuclear and New Energy Technology, Tsinghua University; Collaborative Innovation Center of Advanced Nuclear Energy Technology; Key Laboratory of Advanced Reactor Engineering and Safety of Ministry of Education
China Nuclear Power Technology Research Institute
Beijing Key Laboratory of Passive Safety Technology for Nuclear Energy, North China Electric Power University
Radiation Physics Laboratory, Physics Department, COMSATS Institute of Information Technology (CIIT)