Neutron fluence rate monitoring system

The utility model relates to the technical field of nuclear radiation monitoring, in particular to a neutron fluence rate monitoring system which comprises a detector assembly, a fixing hook, a hanging and hoisting device and a control processing cabinet, the hanging and hoisting device comprises a hoisting support, an electric capstan and a controller, and the electric capstan and the controller are fixed to the hoisting support; a coaxial organic cable is wound on the electric capstan, one end of the coaxial organic cable is connected with the detector assembly, and the other end of the coaxial organic cable is connected with the control processing cabinet; the detector assembly is fixed on the pool wall of the primary loop pool through the fixing hook and is used for monitoring the neutron fluence rate and the change condition of the neutron fluence rate at the reactor core position when the reactor is charged for the first time. According to the invention, the influence of Y rays on a detection result is