Excess lifetime cancer risk due to ingestion of fish from a dam reservoir associated with a nuclear facility in Brazil

Abstract

Fish from a Funil dam reservoir associated with a Nuclear Fuel Factory were sampled aiming to assess the radiological risk due to ingestion. Funil dam reservoir is a strategic site, once it receives effluent from the industrial complex that performs isotopic enrichment of uranium and conversion of UF6. The mean activity concentrations obtained for 40K, 226Ra, 228Ra and 228Th were 57.81, 0.41, 0.92 and 0.49 Bq·kg−1, respectively. Lifetime cancer risk was estimated in ∼10−5 and no action needs to be taken.