OCCUPATIONAL EXPOSURE TO EXTERNAL IONISING RADIATION IN TANZANIA (2011-17).

The objectives of this paper were to evaluate the occupational radiation exposure data from 2011 to 2017 and to compare the results with status in 1996-2010 periods. The evaluation was performed in terms of annual collective effective dose, the average annual effective dose, the individual dose distribution ratio and the annual collective effective dose distribution ratio. Irrespective of work category, the results indicate that the average effective dose ranged from 0.

Occupational radiation exposure in Tanzania (1996-2010): status and trends.

Data on occupational radiation exposure using the thermoluminescence dosimetry methodology in Tanzania for the years 1996-2010 are analysed and discussed. The results of the analysis indicate that over 80 % of the total collective dose was from diagnostic radiology. In addition, <1 % of workers received annual individual doses above 5 mSv, and there were no doses that exceeded the recommended limit of 20 mSv y(-1), except for one incidence in non-destructive testing.