Airborne Gamma-ray Spectrometric Survey of Environmental Radiation Background Around Haiyang NPP, Shandong
Airborne gamma-ray spectrometric survey of environmental radiation background around Haiyang NPP was carried out in an area covered 5 829.6km2.With the collected 116 111 data in earth surface,the project found out environmental radiation background measurements and the activity of natural 40K,238U (226Ra),and 232Th.It was concluded that the dose rate in the northwest area of the NPP is the highest,the middle and northeast area are higher while the southwest and north area are lower.The activity of manmade radionuclide 137Cs and 60Co are less than their detective limits and did not find out resoluble manmade radionuclide and out of control radioactive sources.Two airborne radiation anormaly was found aroused by higher natural radiation in geological environment.
area around Haiyang NPPenvironmental radiation backgroundairborne gamma-ray spectrometric survey703-Ⅰ model airborne monitoring system