31 Janvier 2018
January 31, 2018
Government to test safety of burying radioactive soil this spring
The government plans to conduct a demonstration project sometime this spring to test the safety of burying waste generated by decontamination work following the 2011 Fukushima nuclear disaster, the Environment Ministry said Wednesday.
In the project, soil waste from eastern and northeastern areas of the country other than Fukushima Prefecture will be covered with uncontaminated soil at sites in the village of Tokai, Ibaraki Prefecture, and the town of Nasu, Tochigi Prefecture, with radioactivity levels around the locations being measured.
The government plans to determine its disposal policy for contaminated soil in the fall or later depending on the outcome of the experiment, according to the ministry.
A total of 56 municipalities in seven prefectures — Iwate, Miyagi, Ibaraki, Tochigi, Gunma, Saitama and Chiba — have completed cleanup work with financial support from the central government.
But some 330,000 cubic meters of soil waste has been temporarily kept at around 28,000 locations — including public spaces such as schools and parks — in 53 municipalities, prompting local residents to call for disposal of the waste at the earliest opportunity.
The project will be carried out on the premises of the Tokai Research and Development Center’s Nuclear Science Research Institute in Tokai and at a public space in Nasu.
Some 2,500 cubic meters of soil waste temporarily kept at two locations in Tokai and about 350 cubic meters of soil waste kept at the public space in Nasu will be used in the project.
After the waste is buried, workers’ exposure levels to radiation will also be measured.
“Households in storage locations continue shouldering the burden. I hope (the project) will prove the safety of burying it (soil waste) and lead to the disposal (of contaminated soil),” a Nasu town official said.
“It took time to conduct (the project) but it’s good,” said an official in Tokai, adding that more and more local residents have been asking for the removal of soil waste from a park.
After being asked by municipalities to demonstrate a way to dispose of soil waste, the ministry had been searching for proper locations to carry out the demonstration project.
Radioactive soil disposal method to be tested
Japan's Environment Ministry will carry out tests at 2 sites where soil generated in decontamination work following the 2011 Fukushima nuclear accident is buried.
Outside Fukushima Prefecture, where the crippled Fukushima Daiichi nuclear plant is located, some 330,000 cubic meters of soil are stored in 53 cities, towns and villages in 7 prefectures in eastern Japan.
The soil is currently kept at some 28,000 locations, including schoolyards and parks.
Local residents have called on the government to safely dispose of the soil as quickly as possible. The environment ministry will start testing soil disposal methods in the spring.
The sites chosen are a nuclear research institute in Ibaraki Prefecture and a sports ground in Tochigi Prefecture.
Ministry officials say the stored soil will be buried in the ground and then covered over again with clean new earth. They will then measure radiation levels at areas surrounding the sites and the amount of radiation that workers were exposed to.
The ministry will start negotiating with local governments regarding a full-scale disposal after verifying the test method's safety and drawing up an appropriate disposal plan.