27 Octobre 2017
October 25, 2017
Fukushima debris heading to intermediate storage facility
The Environment Ministry on Oct. 28 will start bringing radiation-contaminated soil to an intermediate storage site in Fukushima Prefecture, despite having acquired less than half of the land needed for the overall project.
The ministry’s announcement on Oct. 24 marks a long-delayed step toward clearing temporary sites that were set up around the prefecture to store countless bags of radioactive debris gathered after the triple meltdown at the Fukushima No. 1 nuclear power plant in March 2011.
The entire intermediate storage project will cover a 16-square-kilometer area spanning the towns of Futaba and Okuma around the nuclear plant. It is designed to hold up to 22 million cubic meters of contaminated debris for a maximum period of 30 years.
However, the ministry is still negotiating with landowners on buying parcels of land within the area. As of the end of September, the ministry had reached acquisition agreements for only about 40 percent of the land for the project.
The soil storage facility that will open on Oct. 28 is located on the Okuma side. It has a capacity of about 50,000 cubic meters.
Bags of contaminated soil stored in Okuma will be transferred to the facility, where the debris will be separated based on radiation dosages.
A similar storage facility is being constructed on the Futaba side.
The ministry initially planned to start full-scale operations of the entire storage facility in January 2015. However, it took longer than expected to gain a consensus from local residents and acquire land at the proposed site.
In March 2015, a portion of the contaminated soil was brought to the Okuma facility for temporary storage.
Interim storage site for Fukushima contaminated soil to begin full operations
An interim storage site in Fukushima Prefecture for soil and waste generated when areas affected by the Fukushima nuclear crisis were decontaminated will be put into full-scale operation on Oct. 28, Environment Minister Masaharu Nakagawa said.
Contaminated soil temporarily placed on the premises of the facility, which straddles the prefectural towns of Okuma and Futaba, will be brought into an underground storage site on the property.
The storage site will be the first one in the country to be put into full-scale operation to store contaminated soil and other waste.
"There are numerous challenges that must be overcome, but the start of operations at the facility is an important step toward the final disposal of contaminated soil," Nakagawa told a news conference on Oct. 24.
The Environment Ministry is constructing the interim storage site on an approximately 16-square-kilometer area around the disaster-stricken Fukushima No. 1 Nuclear Power Plant.
Operations at a section of the facility located in Okuma will begin on Oct. 28. After contaminated soil is measured for radiation, the soil will be stored separately at the facility depending on levels of radiation.
Waterproof work has been performed at the site to prevent stored soil from contaminating ground water.
At the site, a plant to incinerate weeds, trees and other flammable materials removed from contaminated soil and a facility to manage incinerated ash containing high levels of radioactive cesium will also be built.
The ministry estimates that the amount of soil and other waste removed from decontaminated sites in the prefecture could reach up to some 22 million cubic meters.
Decontamination work is still going on in some areas affected by the nuclear disaster, which broke out in March 2011 following the Great East Japan Earthquake and tsunami.
Most of the soil removed from decontaminated areas was put into bags and temporarily stored at various locations in Fukushima Prefecture. Some of the bags have been brought onto the premises for the interim storage site since March 2015.
The central government intends to build a final disposal site outside the prefecture to complete the disposal of contaminated soil by 2045. However, the government has not worked out a specific plan on the final disposal site, such as its location and the timing of its construction.