In the Japanese program for nuclear power generation, the safe management of the resulting radioactive waste, particularly vitrified high-level radioactive waste (HLW) from fuel reprocessing, has been a major concern and a focus of R&D since the late ‘70s. The Second Progress Report on R&D for the geological disposal of HLW (H12 report) was published after two decades of R&D activities and showed that disposal of HLW in Japan is feasible and can be practically implemented at sites which meet certain geological stability requirements. The report supported government decisions that formed the basis of the “the Act on Final Disposal of Specified Radioactive Waste” (Final Disposal Act), which came into force in 2000. The Final Disposal Act specifies deep geological disposal of HLW at depths greater than 300 meters, together with a stepwise site selection process in three stages.
Nuclear Waste Management Organization of Japan (NUMO) was established in October 2000, as a corporation authorized by the Final Disposal Act, with the remit to implement a project for the geological disposal of HLW. NUMO initiated the siting process with open solicitation of volunteer host municipalities for exploring the feasibility of constructing a final repository. This open solicitation approach was announced in December 2002 and information packages were sent to all municipalities in Japan.
The Final Disposal Act was revised in 2007 to include TRU* waste for geological disposal: some types of long-lived, low heat-generating waste from fuel reprocessing and other processes in the nuclear fuel cycle. It is destined for geological disposal and thus fell within the remit of NUMO.
*: radioactive waste containing transuranic radionuclides
***Please see the FAQ for answers to our most frequently asked questions.
Handling of Personal Information
The Nuclear Waste Management Organization of Japan (NUMO) (hereafter “NUMO”) recognizes the importance of protecting personal information, has established a policy on the protection of personal information, and endeavors to appropriately protect personal information.
1 Collection of personal information
The personal information you provide is used to respond to your inquiries and provide you with relevant information such as public meetings. It is not used for any other purpose.
2 Management of Personal Information
The personal information you provide is handled appropriately by SPIRAL®, a Cloud Solutions service of Piped Bits Co., Ltd. For further information about information SPIRAL® asset management, visit its website
(https://www.pi-pe.co.jp/security/customer_ap.html) (Japanese only).
In addition, in the case of transferring the personal data of residents of the EEA (European Economic Area) from the EEA to another region including Japan, NUMO properly protects the collected information in accordance with the General Data Protection Regulation (hereafter “GDPR”).
3 Provision of Personal Information to Third Parties
NUMO does not disclose or provide your personal information to third parties without your consent. However, personal information may be provided in the case of the need to protect human life, body, or individual property and obtaining your consent is not feasible.
4 Outsourcing of Personal Information Handling
In the event of outsourcing some or all of the provided personal information to the extent necessary to achieve the purpose of use, we select contractors that sufficiently fulfill the required level of personal information protection and supervise and manage the contractors.
5 Retention Period of Personal Information
We retain personal information during the period necessary for the purpose of use.
6 Disclosure of Personal Information
Regarding your personal information, you may request to be notified of the purpose of use, the disclosure, correction, additional and deletion of your personal information, and the suspension of its use or provision to third parties (hereafter collectively referred to as "disclosure"). Please contact us through our contact form if you wish to request disclosure of your personal information. We may confirm your identity before such disclosure.
7 Rights Related to Personal Information Handling
Regarding the personal information you provide, you have the following rights in addition to the right of disclosure.
(a) Right to request restrictions on the use of your data
(b) Right to data portability
(c) Right to raise an objection
(d) Right to withdraw your agreement
(e) Right to raise an objection statement to the GDPR authority
8 Arbitrary Nature of Personal Information Provision and Case of Not Providing Personal Information
We collect your personal information to respond to your inquiries only after obtaining your consent. Please note that if your consent is not obtained, we will not be able to respond to your inquiries.
9 Automated Individual Decision-making about Personal Information
We do not make any automated individual decisions that could significantly affect you, including profiling, regarding the personal information you submit.
10 Cookies Policy of NUMO’s Website
Nuclear Waste Management Organization of Japan (NUMO)
・Contact us by phone or letter at the following if you do not have email.
Nuclear Waste Management Organization of Japan (NUMO)
Public Relations Department
Mita NN Bldg. 2F, 4-1-23 Shiba, Minato-ku, Tokyo 108-0014 Japan
+81-3-6371-4003 (10 am to 5 pm, Monday to Friday)