The Japanese government has begun a literature survey to determine if Minamitorishima is suitable as a final disposal site for high-level radioactive waste.
This move represents a critical step in Japan's effort to manage its nuclear legacy. Finding a permanent geological repository is a primary challenge for the nation's energy infrastructure, as temporary storage facilities reach capacity.
Minister of Economy, Trade and Industry Ryosei Akazawa said the government intends to proceed with the literature survey on the island [1]. Minamitorishima is an isolated island under the jurisdiction of Ogasawara Village in the Tokyo Metropolis. This is the fourth such survey initiated nationwide [2].
The process is the first phase of a three-stage selection sequence that lasts roughly 20 years [3]. The current literature survey, which evaluates geological safety and existing records, will take approximately two years to complete [4].
Ogasawara Village Mayor Masaaki Shibuya said he will accept the literature survey and establish opportunities for dialogue with residents [5]. The Nuclear Waste Management Organization (NUMO) is coordinating the technical aspects of the evaluation.
Industry leaders are also emphasizing public engagement. Nozomu Mori, chairman of the Federation of Electric Power Companies, said he would continue dialogue with local residents in coordination with the government and NUMO to deepen public understanding [6].
The selection of a final site involves rigorous geological scrutiny to ensure radioactive materials remain isolated from the biosphere for millennia. By targeting remote islands, the government aims to minimize the impact on densely populated areas, while adhering to strict safety standards.
“This is the fourth such survey initiated nationwide.”
The selection of Minamitorishima signals a strategic shift toward utilizing Japan's most remote territories to solve the politically charged issue of nuclear waste. By initiating the fourth survey of its kind, the government is diversifying potential sites to avoid the local opposition that has stalled previous efforts on the mainland. However, the 20-year timeline suggests that a final solution remains a long-term goal rather than an immediate fix.
