ALPS Treated Water
The Advanced Liquid Processing System (ALPS), a multi-nuclide removal system, removes various radioactive materials from contaminated water.
Treated Water Discharge
(Jump to IAEA website)
Outline of ALPS treated water
- Basic Policy on handling of ALPS treated water at the Tokyo Electric Power Company Holdings’ Fukushima Daiichi Nuclear Power Station (April 13, 2021)(PDF:347KB)
PR material of Basic Policy
- Simplified Chinese(PDF:298KB)
- Traditional Chinese(PDF:363KB)
- French (PDF:289KB)
- Spanish (PDF:424KB)
IAEA’s support for handling of ALPS treated water
- The IAEA Published a Report on Its Second Review Mission of Safety Aspects of Handling of ALPS Treated Water at Fukushima Daiichi Nuclear Power Station in November 2022(April 6, 2023)
- The IAEA Published a Report on "IAEA’s Independent Sampling, Data Corroboration, and Analysis Activities" from Its Review of Safety Related Aspects of Handling ALPS Treated Water at TEPCO's Fukushima Daiichi Nuclear Power Station（January ４, 2023）
- Minister Hagiuda Holds Meeting with H.E. Mr. Rafael Mariano Grossi, Director General of the IAEA (May 18, 2022)
- The IAEA Published a Report on Its February Review Mission of Safety Aspects of Handling of ALPS Treated Water (April 29, 2022)
- The IAEA Conducted Its Review Mission of Safety Aspects of Handling of ALPS Treated Water at Fukushima Daiichi Nuclear Power Station (February 18, 2022)
- Minister Hagiuda Holds a Video Conference with H.E. Mr. Rafael Mariano Grossi, Director General of the International Atomic Energy Agency (IAEA) (December 10, 2021)
- IAEA and Japan held a preparatory meeting for the review on the safety of ALPS treated water at the Fukushima Daiichi Nuclear Power Station (November 19, 2021)
- IAEA Holds First Meeting of International Task Force Set Up to Review Safety of Fukushima Treated Water Release (September 28, 2021)
- IAEA senior officials came to Japan and had a discussion toward the full-scale implementation of the review on the safety of ALPS treated water at the Fukushima Daiichi Nuclear Power Station (September 9, 2021)
- The Government of Japan signed on IAEA's support for handling of ALPS treated water at TEPCO's Fukushima Daiichi Nuclear Power Station (July 8, 2021)
Status of studies on the handling of ALPS treated water
- Outline of Government Budget Proposals of Ministries and Agencies in Response to the Action Plan (December 28, 2021)(PDF:173KB)
The Inter-Ministerial Council concerning the Continuous Implementation of the Basic Policy on Handling of ALPS Treated Water
- Action Plan for the Continuous Implementation of the Basic Policy on Handling of ALPS Treated Water (August 30, 2022)(PDF:509KB)
- Concept to strengthen and expand measures on handling of ALPS treated water at TEPCO’s Fukushima Daiichi Nuclear Power Station (August 30, 2022)(PDF:247KB)
Team for Contaminated Water and Decommissioning Issues
The Subcommittee on Handling ALPS treated water
- The Subcommittee on Handling of the ALPS treated water Report（February 10, 2020）(PDF:2,246KB)
- The Outline of the Subcommittee on Handling of the ALPS treated water Report(PDF:505KB)
Tritiated Water Task Force (2013-2016)
- Tritiated Water Task Force Report (June 2016, Tritiated Water Task Force) (September 15, 2016)(PDF:2,824KB)
ALPS treated water Q&A
Here, we will answer the questions of ALPS treated water.
If you have questions, please check the answer!
＜“treated water” and “contaminated water”＞
Q1: What is “ALPS treated water”?
Q2: Why is “contaminated water” generated?
＜Characteristics of the ALPS treated water＞
Q3: What is tritium?
Q4: Can tritium be removed?
Q5: Does the treated water contain radioactive materials other than tritium?
＜Handling of the ALPS treated water＞
Q6: Why is discharge of ALPS treated water needed?
Q7: Why was Discharge into the sea selected as the method of disposal?
Q8: Is it possible to store or discharge treated water outside of Fukushima Daiichi NPS (FDNPS)？
Q9: Is it possible to store in intermediate storage facilities?
＜Radiation impact of ALPS treated water＞
Q10: What regulatory standards are applicable to the discharge from Fukushima Daiichi NPS (FDNPS)？
Q11: What level of radioactive impact will the release of the treated water have?
＜Countermeasures for possible reputational damage＞
Q12: What kind of countermeasures will be taken for possible reputational damage?
Q13: What are the steps toward handling of treated water?
Related Articles and Videos
- Japan’s challenges and initiatives in discharging Fukushima water
- The science and global standards behind Fukushima’s ALPS treated water
The Wall Street Journal
South China Morning Post
ANRE Special Contents - article on ALPS treated water -
- TEPCO: Tokyo Electric Power Company
- TEPCO:TREATED WATER POTAL SITE
- NDF: Nuclear Damage Compensation and Decomissioning Facilitation Corporation
- NRA: Nuclear Regulation Authority
- MAFF: Ministry of Agriculture, Forestry and Fisheries
- Fukushima Prefecture: Food monitoring site
- IRID: International Research Institute for Nuclear Decommissioning
- JAEA: Japan Atomic Energy Agency
- IAEA: Fukushima Daiichi Status Updates
- MOE: ALPS Treated Water Marine Monitoring Information
Division in ChargeNuclear Accident Response Office, Electricity and Gas Industry Department, Agency for Natural Resources and Energy