Regulations for the Nuclear Source Materials Operational Safety Management Article 13

Where accident occurs or loss, theft or sabotage is found during the operating process of nuclear source material, the operator or applicant shall notify the competent authority within two hours after the occurrence or finding, and bring forward a written report within thirty days.
中文原文 核子原料運作安全管理規則第13條
核子原料於運作過程中發生意外事故或發現遺失、遭竊或受破壞時,經營者或申請者應於發生或發現時起二小時內通報主管機關,並於三十日內提出書面報告。

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