Enforcement Rules of the Atomic Energy Law Article 9

The location of a nuclear facility in addition to corresponding to the regulations of exclusion zone and low density population zone, should keep a distance no less than one and one third the radius of the low density population zone from any area with a population of twenty-five thousand or more.The preceding location after being assigned by the nuclear installation operator should be reported to the Atomic Energy Council. The Council demarcates a radius of exclusion zone and low density population zone, according to the preliminary safety analysis report and the condition of the area in practice, and negotiates the plan for determining it with the regional authorities. The Atomic Energy Council should suggest changes in the regional plan by law whenever the situation warrants.
中文原文 原子能法施行細則第9條
核子設施之設置地點,除須符合禁建區及低密度人口區之要求外,其與二萬五千人以上人口集居地區之距離,至少應為低密度人口區半徑一又三分之一倍。
前項設置地點由核子設施經營人選定後,報請原子能委員會依據核子設施初期安全分析報告及地區實際狀況,劃定禁建區及低密度人口區之半徑,並會商區域計畫主管機關核定之。
必要時並應依法建議變更區域計畫。

English translation for reference only; the Chinese text prevails. Not legal advice.