Drag the screen for a 360° view.
Dose levels in the vicinity
μSv/h
What is this facility?
Multi-nuclide removal equipment (ALPS) is equipment dedicated to remove radioactive materials contained in contaminated water excluding tritium having ability to reduce the concentrations of radioactive substances to levels that meet government’s regulations certainly.
It can remove 62 types of radioactive materials through chemical agent-induced precipitation and multiple adsorbent
See the Treated Water Portal Site for more detail.
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 tritium?
Tritium is a relative of hydrogen that bonds with oxygen just like other hydrogen and exists as a liquid that has almost the same qualities as water.
The energy of radiation emitted by tritium is extremely weak and can travel only approximately 5mm through the air. It can be shielded with a single sheet of paper.
Tritium occurs naturally in the environment when radiation from space falls to the Earth in the form of "cosmic rays" and mixes with our atmosphere.
Tritium is also generated through the process of nuclear fission at nuclear facilities in Japan and overseas. Tritium is present in rain water, seawater, and tap water, and can be found inside the bodies of humans and animals. Click here for more information on tritium.
*Tritium generated at nuclear power facilities is regulated and managed in accordance with each country's requirements and discharged into the sea and atmosphere, etc.
What protective equipment do workers wear in this area?
This is an area for treating contaminated water so workers wear protective clothing and full-face masks.
How much contaminated water can the equipment treat per day?
The entire multi-nuclide removal equipment can treat a maximum of approximately 2,000 tons of contaminated water per day
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
