Occupational Radiation Exposure Due to 222Rn in Natural Gas and Natural Gas Products

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Abstract
The potential hazard of occupational exposure to the radiations of 222Rn and its daughters in the natural gas industry is examined. The results of a study of 222Rn concentrations and external radiation fields in nine geographically diverse natural gas processing plants are given, and the results are interpreted in terms of occupational exposure. It is concluded that while both internal and external exposures to the radiations from 222Rn and its short-lived daughters do occur, the magnitudes of the exposures are not serious. The potential problem of exposure during maintenance operations to long-lived 222Rn daughters which may build up on the interior surfaces of gas processing equipment is recognized but not resolved.
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