METHOD AND DEVICE FOR MEASURING CONTROL ROD WORTH IN SUBCRITICAL STATE OF NUCLEAR POWER PLANT

摘要

A method and a device for measuring a control rod worth in a subcritical state of a nuclear power plant. The method comprises: acquiring a first neutron detector response value of a nuclear reactor in an initial state (S201); acquiring a second neutron detector response value of the nuclear reactor in a subcritical state (S202); and determining a control rod worth according to the first neutron detector response value and the second neutron detector response value (S203). The method and the device can measure the control rod worth without occupying a power detector, and the power detector can still play a protective role on the nuclear reactor, thereby improving the security of the nuclear reactor.