Novel control rod value measuring method

The invention belongs to the field of nuclear reactor physical testing methods, particularly relates to a novel control rod value measuring method, and aims to independently research and develop a set of novel nuclear power plant control rod value measuring method and realize rapid and accurate measurement of the control rod value without any physical change or modification in a nuclear power plant. According to the technical scheme provided by the invention, the physical change and modification do not need to be performed on a nuclear instrumentation system (RPN) in the nuclear power plant; as proved by field test verification, the scheme is effective, and the control rod value measured according to the method is completely consistent with the control rod value measured by the conventional method. By using the method, 12 hours or so can be saved for the mainline time of overhauling of the nuclear power plant; as calculated for a million of units, about 5,000,000 RMB of annual direct power generation economic