The characteristics of risk important human events in the North Anna individual plant examination were analyzed based on the Risk Achievement Worth and the Fussell-Vesely importance.

• 讨论了两个风险重要度 :割集重要度 (Fussell- Vesely im -portance,FV)和风险增加当量 (risk achievem ent worth,RAW)得到的 North Anna核电站单个电站审查中风险重要人因事件特点。