The invention relates to an optimization design method of a
liquid state effluent measure apparatus sampling
system, which comprises the optimization of a
detector system used by matching with a sampling chamber in the sampling
system; optimization of the thickness of a shielding layer at the
peripheral part of the sampling chamber; and optimization of volume and dimension of the sampling chamber. The method comprises the following steps: for a simulated source item containing
nuclide to be measured, preferably selecting a
detector with 1-5 inches and performing preliminary
simulation by different sizes, analyzing detection and electronic performance of the
detector, and analyzing the relation of sampling chamber volume and the detection system
counting rate; by aiming at the selected area to take regard of extraneous
interference factor, performing
background radiation shield
simulation to determine an appropriate shielding
layer thickness; measuring the
counting rate relation of economic cost and detection system; and determining the optimized
liquid state effluent monitoring sampling system. According to the method, excellent monitoring performance of the monitoring sampling system is obtained, and the system research and open time can be simultaneously and effectively saved, design cost is saved, and the
radiation risk is minimized.