M310 nuclear power unit main steam system steam flow meter range calculation method

The invention belongs to the technical field of nuclear power thermal instruments, and particularly relates to a steam flow meter range calculation method for a main steam system of an M310 nuclear power unit. Collecting the steam flow of the calculated loop, the steam generator feed water flow of the calculated loop and the steam generator pollution discharge flow of the calculated loop at 10 o'clock to 11 o'clock in the morning of a certain day in the middle ten days of March, June, September and December of the last year; extracting steam flow of the calculated loop, steam generator feed water flow of the calculated loop and steam generator pollution discharge flow data at intervals; solving the average steam flow QVVP of the calculated loop, the average feed water flow QARE of a steam generator of the calculated loop and the average pollution discharge flow data QAPG of the steam generator; obtaining the original range R0 of the calculated loop; according to the method, the influence of climate change on