Dose levels in the vicinity
μSv/h
What is stored in these tanks?
These tanks contain ALPS treated water, etc. that has been treated with multi-nuclide removal equipment (ALPS), etc. and Sr removed water.
Note on “Water treated with multi-nuclide removal equipment, etc. (ALPS treated water)” is notated.
"ALPS treated water" refers to water that has been purified with multi-nuclide removal equipment (ALPS), etc. until the concentrations of radioactive substances, excluding tritium, meet the government’s regulatory standards (The sum of the ratio of legally required concentrations, excluding tritium, being less than 1).
Water that has been purified with multi-nuclide removal equipment (ALPS), etc., but has yet to fulfill the government’s regulatory standards (The sum of the ratio of legally required concentrations, excluding tritium, being 1 or higher) is referred to as, "treated water to be re-purified".
What is the capacity of each tank?
There are many types of tanks. A standard tank can hold approximately 1,000m3of water.
How many tanks are there on-site?
As of January 2024, there are more than 1,000 tanks on site in with the capacity of approximately 1.37 million m³ of water such as ALPS treated water.
See the Treated Water Portal Site for more details.
Note on “Water treated with multi-nuclide removal equipment, etc. (ALPS treated water)” is notated.
"ALPS treated water" refers to water that has been purified with multi-nuclide removal equipment (ALPS), etc. until the concentrations of radioactive substances, excluding tritium, meet the government’s regulatory standards (The sum of the ratio of legally required concentrations, excluding tritium, being less than 1).
Water that has been purified with multi-nuclide removal equipment (ALPS), etc., but has yet to fulfill the government’s regulatory standards (The sum of the ratio of legally required concentrations, excluding tritium, being 1 or higher) is referred to as, "treated water to be re-purified".
What are the tents around the bottoms of the tanks?
These tents have been set up to prevent rainwater from entering leak prevention dikes.
In the slight chance that a tank did leak, this would enable us to accurately measure and analyze the amount of water
that leaked.
What is the difference between white, gray and blue colored tanks?
The various tank manufacturers use different colors. There is no difference in performance.
Will the water be stored in tanks forever?
Since August 24, 2023, we have commenced the discharge of ALPS treated water into the sea. This water was stored in tanks, and confirmed prior the discharge that the concentrations of radioactive substances, excluding tritium, meet the government’s regulatory standards after the purification by multi-nuclide removal equipment (ALPS), etc.
Therefore, the amount of water being stored in these tanks will gradually decrease over time.
Note on “Water treated with multi-nuclide removal equipment, etc. (ALPS treated water)” is notated.
"ALPS treated water" refers to water that has been purified with multi-nuclide removal equipment (ALPS), etc. until the concentrations of radioactive substances, excluding tritium, meet the government’s regulatory standards (The sum of the ratio of legally required concentrations, excluding tritium, being less than 1).
Water that has been purified with multi-nuclide removal equipment (ALPS), etc., but has yet to fulfill the government’s regulatory standards (The sum of the ratio of legally required concentrations, excluding tritium, being 1 or higher) is referred to as, "treated water to be re-purified".
View Map
- Guide 01Entrance to 1F
- Guide 02Site-only vehicles
- Guide 03High ground in front of reactor buildings
- Guide 04Unit 1
- Guide 04Q&A for Unit 1
- Guide 05Unit 2
- Guide 05Q&A for Unit 2
- Guide 06Unit 3
- Guide 06Q&A for Unit 3
- Guide 07Unit 4
- Guide 07Q&A for Unit 4
- Guide 08Facing
- Guide 09Near the Units 2 and 3
- Guide 10Unit 5
- Guide 10Inside the Unit 5
Reactor Building (360°)
- Guide 11Inside the Primary Containment Vessel
- Guide 11Q&A for Inside the Primary Containment Vessel(360°)
- Guide 12Fuel debris investigation
- Guide 13Unit 1/2 Main control room
- Guide 13Q&A for Unit 1/2 Main control room (360°)
- Guide 14Unit 1/2 exhaust stack
- Guide 15Fuel removal
- Guide 15Q&A for Common pool(360°)
- Guide 16Contaminated water countermeasures
- Guide 16Q&A for Freezer Room (360°)
- Guide 17Tank area
- Guide 17Q&A for Tank area
- Guide 18Overview of ALPS treated water discharge
- Guide 19Multi-nuclide Removal Equipment (ALPS)
- Guide 19Q&A for Multi-nuclide Removal Equipment(360°)
- Guide 20Measurement/Confirmation Facility
- Guide 21Dilution facility and discharge facility
- Guide 21Q&A for Emergency isolation valve(360°)
- Guide 22Sea area monitoring
- Guide 23Marine organisms rearing test
- Guide 24Chemical analysis building
- Guide 25JAEA The Facility for Analysis and Research of Radioactive Materials Laboratory-1
- Guide 26Countermeasures against natural disaster
- Guide 27Main Anti-Earthquake Building
- Guide 28Site preparation for waste treatment facilities
- Guide 29Large rest house
- Guide 30New administration office building
- Guide 31IAEA office
