Pressurized water reactor nuclear power station deposition source item measurement point distribution method

The invention discloses a pressurized water reactor nuclear power station deposition source item measurement point distribution method. The method comprises the following steps: initially setting a point distribution scheme; radionuclides needing to be measured are determined, the activity concentration of the radionuclides deposited on the inner wall of the pipeline at each measurement point position is obtained, and the measurement point positions are sorted according to the activity concentration; determining the installation condition of the deposition source item online measurement device to be used, measuring the field space size of each measurement point, and excluding the measurement points without the installation condition; determining whether there is an additional measurement point location and a priority factor, and if there is no additional measurement point location and the priority factor, determining that the point distribution scheme sequence is not changed; if the additional measurement poi