Abstract

The 137Cs body contents of 16 adult fish and shellfish consumers near Sellafield over the period mid-1984 to mid-1985 have been measured, and the results compared with predictions based on normal techniques of habits surveys and environmental monitoring. The comparison shows the conventional assessments to be cautious: although there is considerable variation between individuals, on average the measured body contents of 137Cs were only about one third of the predicted values. This gives confidence in the usual method of dose estimation for critical groups in demonstrating compliance with appropriate dose limits. There is no evidence from this study to suggest that the caesium retention model used under-estimates body content. There would appear to be no significant pathways which have been unaccounted for and which could have led to 137Cs intakes by the subjects.

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