Enforcement Rules for the Nuclear Emergency Response Act Article 15

Designated agencies, the regional Competent Authority and licensees shall, in accordance with Paragraph 29.1 of the NER Act, submit a summary of how the accident was managed to the central Competent Authority within two days after relief of the responsibilities of the various emergency response organizations, and submit an emergency response working report within 30 days.
中文原文 核子事故緊急應變法施行細則第15條
指定之機關、地方主管機關及經營者應依本法第二十九條第一項規定,於核子事故中央災害應變中心宣布解除各緊急應變組織任務之日起二日內,向中央主管機關提報事故處理摘要,並於三十日內提報緊急應變工作報告。

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