A Study on Protection Against the Radioactive Hazards During Transportation of Naturally Occurring Radioactive Materials

In this work, radiation dosages and hazards emerging due to doses received by drivers and workers involved in transporting naturally occurring radioactive materials (NORM) in Egypt are assessed and compared with the accepted doses in many countries. Two cases were studied; the first case is of a truck driver and the other one was of the loading-unloading workers. The workers' case was studied to estimate the doses and hazards to workers in the field of recycling materials. The annual working hours for truck drivers were defined, according to normal, heavy and abnormal duties, as 200, 400 and 600 hours. Working hours for loading-unloading workers were also selected under various conditions of duties to be 50, 100 and 150 annual hours. External and internal exposure for drivers and workers were estimated according to the properties of materials. Zircon, phosphate and bauxite were the assumed cargos. The doses due to inhalation of contaminated dust were considered in addition to the external dose of g - radiation.