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Interim Storage Facility

What is the Interim Storage Facility (ISF)?

  • In Fukushima Prefecture, large quantities of removed soil and waste have been generated from decontamination works.
  • The Interim Storage Facility is necessary to safely and intensively manage and store the soil and waste until the final disposal.
  • Removed soil and waste derived of decontamination activities, and specified wastes (> 100,000 Bq/kg) are stored.
  • The total volume is currently estimated at around 14 mil. m3, with the further review reflecting the actual circumstances.

* In principle, combustible materials will be incinerated, and incinerated ash will be stored.

Map of ISF and Process of the ISF Project

Progress of Land Acquisition of the ISF

As of the end of November 2019

Soil Separation/Storage Facility

  • Soil storage facility started the operation in October 2017 in Okuma and in December 2017 in Futaba

Soil Separation Facility and Soil Storage Facility

Operational Status of the ISF

  • Construction of the facility started in November 2016
  • The operation of Soil Separation Facilities started in June 2017 in Futaba, and in August 2017 in Okuma
  • The storage of the removed soil started in October 2017 in Okuma and in December 2017 in Futaba after the completion of the Soil Storage Facilities

Photo of Soil Separation Facility (in Futaba) and Soil Storage Facility (in Okuma)

Transportation to the ISF

Ad-hoc Policy on Transportation to the Interim Storage Facility

8 Steps towards the Final Disposal outside Fukushima Prefecture within 30 years from the Start of the ISF

  • MOE conducts R&D to examine how the final disposal to be implemented taking into account the effect of radioactive decay and the potential of volume reduction and recycling
  • MOE shares the information with the public to build the consensus for recycling of lower contaminated soil and the final disposal outside Fukushima Prefecture

Technology Development Strategy for Volume Reduction & Recycling of the Removed Soil

  • Towards the final disposal of the removed soil outside Fukushima Pref., MOE will promote recycling of the soil after volume reduction technology as much as possible, which consequently would lead to reduce the volume of soil for the final disposal
  • After clarifying the objectives and priority of technology development and volume reduction & recycling, basic technology development is planned to be completed within 10 years, then move onto a phase of treatment
  • On the premise of securing safety, MOE will try to realize the recycling in the possible field, building public understandings for the safety
  • Based on technology development and prospect of recycling in the future, MOE would propose some options for structure and necessary dimension of the final disposal

Concept on Safe Use of the Removed Soil after Recycling

< Basic Concept >

The removed soil should be used mainly for public projects with a responsible management system for the controlled materials (with a radioactivity level below 8,000Bq/kg in principle and set according to purpose) after necessary treatment, e.g. removal of debris, classification treatment. The use will be limited, such as the basic structure material of an embankment which is not assumed to change shape artificially, and be managed appropriately.

< Limited Use >

  • The use will be limited to the material which is not assumed to change shape artificially for a long time period, e.g. basic structure material of banking for coastal levees or seaside protection forests, embankment materials for roads, cover soil for waste disposal sites, landfill materials and basic structure for farms of flowers and energy crops.

< Appropriate management >

  • The projects will be mainly public projects with a responsible management system.
  • The radioactive cesium concentration in the removed soil should be limited in order to confine the additional exposure dose. The additional exposure dose should be below 1mSv/y during the construction and below 0.01mSv/y at the time of service.
  • Covering soil should be installed, scatter and leakage should be prevented, ground form change should be observed, and the data should be recorded.

< How to proceed recycling >

As the environmental improvement towards the practical recycling of the removed soil, demonstration projects and model projects based on the above concepts should be implemented keeping the safety against radiation, studying specific verification of the management method and building stakeholders’ and public understanding.

Demonstration Project for Recycling in Minamisoma City

Demonstration project is currently being implemented in Minamisoma City, studying specifically on handling radiation during the procedure of recycling and ensuring the quality of the recycled soil as construction material in order to promote safe recycling and reuse of the removed soil in a step by step manner.

Demonstration Project for Recycling in Iitate Village

Another demonstration project is planned in Iitate Village. In response to the request from Iitate Village, the removed soil stored at TSS in Iitate Village will be recycled, and experimented in cultivation of flowers and energy crops in Nagadoro Borough of the village.

Contents of the demonstration project

  1. 1) Transport the removed soil from TSS in Iitate Village to the stock yard in Nagadoro Borough
  2. 2) Produce the recycled soil by separating foreign materials from the removed soil, classifying upon the radioactive concentration, and controlling the quality after construction of the recycling facility
  3. 3) At the demonstration project site, develop the basement of the farmland with the recycled soil covering the surface with uncontaminated soil
  4. Conduct test cultivation at the farmland in the demonstration project site

Image of the demonstration project

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