Abstract: The Complex Terrain Dispersion Model (CTDM) developed by the American Environmental Protection Agency (EPA) is applied to Qinshan Nuclear Power Plant (QNPP) in China.The ground plume centerline concentrations of atmospheric pollutant in PhaseⅠ,Ⅱ and Ⅲ are calculated.The results are compared with that of wind tunnel experiments and a few field data.Two revising methods for LIFT are put forward.Model reliability test shows that the revising methods are more accurate.The ratios of calculated result to the measurement in the domain of 1/3.5~3.5 are:54.4% in CTDM,72.9% in revision A, 58.6% in revision B.In addition,the model sensitivity is analyzed.

Key words: air pollution, CTDM, wind tunnel simulation, Qinshan nuclear power plant