translate English to French: At a dose of 5 mSv, the lifetime fatal cancer risk for a member of the public is 1 in 4000 (based on the linear no-threshold hypothesis), or 1 in 2750 if non-fatal cancers and hereditary effects are included.
Une dose de 5 mSv comporte un risque à vie de cancer mortel de 1 sur 4 000 (selon l'hypothèse d'une relation linéaire sans seuil), ou de 1 su r 2 750 si l'on inclut les cance rs non mortels et les effets héréditaires.