不同扩散参数与气象条件对核电厂年均大气扩散因子的影响

Effect on the Annual Atmospheric Dispersion Factor of Different Diffusion Parameters and Meteorological Data at Nuclear Power Plant

基于田湾核电厂厂址 1 997～ 1 999年和福建惠安核电厂厂址 1 995～ 1 997年百米逐时气象数据 ,对四组不同扩散参数 (厂址实测、IAEA推荐值、Briggs以及 Pasquill参数系 )对两核电厂厂址的年均大气扩散因子计算值的影响作了估算 ,分析表明 ,采用 IAEA和 Briggs扩散参数与厂址实测值的偏差小于 2 0 %。

Based on the hourly metrological observing data of 100 m high tower during 1997～1999 at Tianwan Nuclear Power Plant(NPP) site and 1995～1997 in Fujian Huian NPP site,the effect on the annual atmospheric dispersion factor (AADF) of four different diffusion parameters (on site measuring values,IAEA's,Briggs's and Pasquill's) are estimated. The analysis shows that the deviation between the results from IAEA's?Briggs's and on site measured diffusion parameters is less than 20%.The effect on the AADF from different years' meteorological data also is estimated?