| Organisation | Representative | Role of organisation | Website |
| Nuclear Waste Management Organization of Japan (NUMO) | Takao Ohi | NUMO is the implementing body for the final disposal of vitrified high-level waste packaged from the spent fuel reprocessing plant. It is a government approved organization responsible for identification of a disposal site, and for the construction, operation and maintenance of the repository, closure of the facility, and post-closure institutional control. | http://www.numo.or.jp/ |
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In addition to the Sponsoring Committee members, the following are Academic Members of the BIOPROTA forum.