Information Portal for the Research and Development
for the Fukushima Daiichi Decommissioning

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Containing, transportation and storage of retrieved fuel debris

R&D efforts (Application development linked to plant applications and actual use)

Ongoing projects

Development of Technology for Containing, Transportation and Storage of Fuel Debris（Project of Decommissioning and Contaminated Water Management）

Summary

To establish scenarios for the process from fuel debris retrieval to its storage, system will be developed that ensure safe, reliable and reasonable containing, transportation and storing of the retrieved fuel debris.

Action items

1. Development of technology for handling of powdery and slurry/sludge state fuel debris
   ① Advancement of prediction method of hydrogen generation
   ② Establishment of countermeasures for hydrogen gas accumulation based on hydrogen gas release behavior
2. Technology development for maintaining the stable storage offuel debris
3. Re-evaluation of storage methods and storage canisters

Implementation plan

Source: FY 2026 Research and Development Plan for Decommissioning
　　　　(METI, Secretariat of the Team for Countermeasures for Decommissioning and Contaminated Water Treatment (February 26, 2026)) (PDF page 20-21）

Results & performance by fiscal year

• FY 2025

• Status of progress at the end of February 2025 (METI, Secretariat of the Team for Countermeasures for Decommissioning and Contaminated Water Treatment (February 26, 2026)) (PDF page 60 Japanese)

• FY 2024

• Status of progress at the end of February 2025 (METI, Secretariat of the Team for Countermeasures for Decommissioning and Contaminated Water Treatment (February 27, 2025)) (PDF page 60 Japanese)

• FY 2023

• Status of progress at the end of February 2024 (METI, Secretariat of the Team for Countermeasures for Decommissioning and Contaminated Water Treatment (February 29, 2024)) (PDF page 43)

• FY 2022

• Status of progress at the end of February 2023 (METI, Secretariat of the Team for Countermeasures for Decommissioning and Contaminated Water Treatment (February 22, 2023)) (PDF page 30)

• FY 2021

• Status of progress at the end of January 2022 (METI, Secretariat of the Team for Countermeasures for Decommissioning and Contaminated Water Treatment (January 27, 2022)) (PDF page 31)

• FY 2020

• Status of progress at the end of January 2021 (METI, Secretariat of the Team for Countermeasures for Decommissioning and Contaminated Water Treatment (January 28, 2021)) (PDF page 35)

• FY 2020

• Status of progress at the end of February 2020 (METI, Secretariat of the Team for Countermeasures for Decommissioning and Contaminated Water Treatment (February 27, 2020)) (PDF page 27)

• FY 2018

• Status of progress at the end of February 2019 (METI, Secretariat of the Team for Countermeasures for Decommissioning and Contaminated Water Treatment (February 28, 2019)) (PDF page 28)

• FY 2017

• Report for FY 2017 enforcement (Development of Technologies for Containing, Transportation and Storage of Fuel Debris (June 2018)) (IRID) (PDF)
• Status of progress at the end of February 2018 (METI, Secretariat of the Team for Countermeasures for Decommissioning and Contaminated Water Treatment (March 1, 2018)) (PDF page 25)

• FY 2016

• Completion report (Development of Technologies for Containing, Transportation and Storage of Fuel Debris(March 2017)) (IRID) (PDF)
• Status of progress as of the end of February 2017 (METI Secretariat of the Team for Countermeasures for Decommissioning and Contaminated Water Treatment (February 23, 2017)) (PDF page 26)

• FY 2015

• Status of progress as of the end of February 2016 (METI Secretariat of the Team for Countermeasures for Decommissioning and Contaminated Water Treatment (February 25, 2016)) (PDF page 45)
• Purpose and project results of development of fuel debris collection, transfer, and storage technology (IRID) (PDF)

• FY 2014

• Summary of results (METI, Secretariat of the Team for Countermeasures for Decommissioning and Contaminated Water Treatment (February 26, 2015)) (PDF page 6）

• FY 2013

• Development of fuel debris collection, transfer, and storage technology (June 27, 2014) (IRID) (PDF)

Results & performance for individual projects, etc. (Archives)

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R&D efforts (related basic and generic research)

＜Updated regularly＞

Plant investigation, measurement data, and information

Efforts to understand the plant status at each of Units 1 to 3, and for fuel debris retrieval (Updated December 4, 2025)

(METI, Secretariat of the Team for Countermeasures for Decommissioning and Contaminated Water Treatment)

• Current Status of Fukushima Daiichi NPS (As of April 23, 2026)

Fukushima Daiichi NPS survey map

• Inside reactor buildings, etc. (TEPCO)

Other related information

＜Updated regularly＞