Abstract: Calculation model and parameters of public dose caused by the gaseous and liquid effluent discharge is introduced. The biggest individual effective dose, critical groups, critical exposure pathways, critical nuclides, public collective effective dose and normalized emissions of gaseous and liquid effluents are given from 2007 to 2016. The largest individual collective dose each year is compared with the designed value, the national standard GB 6249—2011 prescribed dose constraint value, and natural background radiation level. The results show that the impact to the public caused by the annual effluent discharge of Tianwan nuclear power plant can be neglected under safe and stable operation condition.

Key words: nuclear power plant, effluent, public dose