Assessment of Risk to Hong Kong due to Accidental Releases of Radionuclides from a Nearby Nuclear Power Plant

A dispersion model was used to estimate the deposition of radionuclides onto reservoirs in Hong Kong due to accidental releases from the Daya Bay nuclear power plant. If water rationing could be imposed, the radiological hazard due to ingestion of contaminated water was about 25.8 mSv/year/person. The distribution coefficients of typical reservoir soils had been measured and were found to be about an order of magnitude less than those in other countries. It was estimated that reservoir soils had the capability of reducing the effective dose equivalent to about 16.7 mSv/year/person.