The Nuclear Regulation Authority (Japanese: 原子力規制委員会, Hepburn: Genshiryoku Kisei Iinkai, NRA) is an administrative body of the Cabinet of Japan established to ensure nuclear safety in Japan as part of the Ministry of the Environment.

After the Fukushima nuclear disaster following the March 11, 2011, earthquake, the government's safety measures were seen to be inadequate.

Also, NISA, being under the umbrella of METI, which was also responsible for promoting the use of nuclear power, was seen as having a conflict of interest.

[4] According to the law establishing the NRA, the task of working out new nuclear safety rules must be completed within ten months of its September 19, 2012, launch.

Because tablets were needed for approximately 4.8 million people who live within 30 kilometers of a nuclear reactor, implementation may take some time with only one pharmaceutical firm in Japan available for the production.