MANAGEMENT OF NORM IN THE PETROLEUM INDUSTRY Akpojevwa Tega Naomi, october 2016 | Page 5

LIST OF FIGURES
Figure 1.1 Origin of NORM Contamination in Oil and Gas Exploitation 3
Figure 1.2 Radioactive Decay in Thorium and Uranium Series 6
Figure 1.3 Transport of 238U progeny in oil and gas production 7
Figure 1.4 Transport of 232Th progeny in oil and gas production 8
Figure 2.1 Scale formation inside pipes used for oil extraction 13
Figure 2.2 Exposure to NORM form internal and External 24
Figure 3.1 Worker using a HPWJ lance 34
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