Abstract:

Lam Thao superphosphate and chemical company was built and put into production with the initial capacity of 40.000 tons of sulfuric acid per year and 10.000 tons of superphosphate per year. Currently, the company produces 600 tons of NPK per year and 300.000 tons of fused calcium magnesium phosphate per year and hundred tons of sulfuric acid per year. In order to study the effects of radioactive environment caused by processing Lao Cai apatite ore which contains radioactive in fertilizer production in Lam Thao superphosphate and chemical company between 2006 and 2008. Institute of Nuclear Science and Technology conducted radioactive environmental surveys in 2016 and tasks on international bilateral cooperation between Vietnam and Poland hosted by Hanoi University of Mining and Geology are also implemented to conduct radioactive environmental surveys and epidemiological investigation. The results indicate that the production of fertilizer has increased the irradiation dose in the area of company by 2.08 mSv per year at Thach Son commune nearby the company by 0.42mSv per year, which are both lower than safety standard in occupational and public irradiation. The results of epidemiological investigation in international bilateral cooperation between Vietnam and Poland clarify that the relationship between irradiation dose and health conditions of people who has sickness characteristics in residential areas near company. The research proves that people at Thach Son commune and workers of the company have symptoms of diseases that are not associated with the impact of radiation but are associated with the impacts of dust and gas which contains chemical components in the production process and has a considerable affect to human being’s health.