Pre-assessment of dose rates of Cs-134, Cs-137, and Co-60 for marine biota from discharge of Haiyang Nuclear Power Plant, China

摘要

Haiyang Nuclear Power Plant to be built in China was selected as a case for the dose pre-assessment for marine biota in this study. The concentrations of Cs and Co in organisms (turbot, yellow croaker, swimming crab, abalone, sea cucumber, and sea lettuce), seawater, and bottom sediment sampled on-site were measured by neutron activation analysis, and the site-specific transfer parameters (concentration ratios and distribution coefficients) of Cs and Co were calculated. Cs-134, Cs-137, and Co-60 activity concentrations in the organisms and the sediment at the site were calculated with the site-specific transfer parameters and the anticipated activity concentrations in the liquid effluent of the nuclear power plant. The ERICA tool was used to estimate the dose rates of Cs-134, Cs-137, and Co-60 to the selected organisms based on the biological models developed. The total dose rates of Cs-134, Cs-137, and Co-60 to the six organisms were all <0.001 mu Gy h(-1). (C) 2015 Elsevier Ltd. All rights reserved.