ENVIRONMENTAL IONIZING RADIATION DISTRIBUTION IN RIVERS STATE, NIGERIA

The distribution of ionizing radiation in Rivers State in the Niger Delta region of Nigeria is studied on the premise that the state - wide distribution of oil and gas operations leads to a homogeneous ionizing radiation environment. The state is sub divided into three self - consistent sub environments of an upland college campus environment, a rural riverine environment and an industrial sub zone environment. Available data give a mean dose equivalent of 0.745 +/- 0.085 mSv/yr (upland campus environment), 0.690 +/- 0.170 mSv/yr (rural riverine communities) and 1.270 +/- 0.087 mSv/yr (industrial zone) indicating an inhomogeneous radiation profile. The differences may be due to variations in levels of industrial activities and local geological peculiarities. Health implications are also examined.