Enforcement Rules of the Atomic Energy Law Article 8
The area surrounding a nuclear facility should be divided into two areas, according to anticipated degrees of damage in case of nuclear accident:1. ”Exclusion zone” means an area close to a nuclear facility. Within two hours of the occurrence of a nuclear accident, a person standing on the perimeter of this area should not receive a total dose to the entire body exceeding 250 mSv (25 Rem) from external fission products, or a dose exceeding 3 Sv (300 Rem) from iodine collecting in the thyroid gland.2. “Low density population zone” means an area close to an exclusion zone. Anyone who stands on the boundary of the area should not receive a total dose to the entire body exceeding 250 mSv (25 Rem) from external fission products or exceeding 3 Sv (300 Rem) from iodine collecting in the thyroid gland during the entire period from the appearance of a radioactive cloud after the occurrence of a nuclear accident until the dissipation of the radioactive cloud.
中文原文 原子能法施行細則第8條
核子設施周圍地區，應按核子事故發生時可能導致損害之程度，劃分左列兩區：
一、禁建區：係核子事故發生後，於其邊界上之人在二小時內，接受來自體外分裂產物之全身劑量不超過二五○毫西弗（二十五侖目），或來自碘之甲狀腺劑量不超過三西弗（三百侖目）之緊接核子設施地區。
二、低密度人口區：係核子事故發生後，於其邊界上之人自放射性雲到達時起至全部通過時止，所接受來自體外分裂產物之全身劑量不超過二五○毫西弗（二十五侖目），或來自碘之甲狀腺劑量不超過三西弗（三百侖目）之緊接禁建區之地區。
一、禁建區：係核子事故發生後，於其邊界上之人在二小時內，接受來自體外分裂產物之全身劑量不超過二五○毫西弗（二十五侖目），或來自碘之甲狀腺劑量不超過三西弗（三百侖目）之緊接核子設施地區。
二、低密度人口區：係核子事故發生後，於其邊界上之人自放射性雲到達時起至全部通過時止，所接受來自體外分裂產物之全身劑量不超過二五○毫西弗（二十五侖目），或來自碘之甲狀腺劑量不超過三西弗（三百侖目）之緊接禁建區之地區。