Radioecological situation on radiation-dangerous objects in West Kazakhstan and adjoining territories

During 1997-1999 Institute of Nuclear Physics of National Nuclear Center of Republic of Kazakhstan conducted radioecological study in places where nuclear explosions with peaceful purposes were carried out (objects Lira, Batolit-2, Region-3, Mangyshlak and in some regions of West Kazakstan oblast situating in zone of nuclear sites influence (Kapustin Yar, Azgir, Region)). Conducted investigations show, that concentration of artificial radionuclides in top layer of soil in these regions are within range 7-87 Bq/kg for 137Cs, <1-39 Bq/kg for90Sr. Plutonium isotopes above level 1.5 Bq/kg has not been found. It was concluded that radioecological situation in places where nuclear explosions carried out is practically safe for life