Dose levels in the vicinity
μSv/h
What kind of work is being done at Unit 1?
At Unit 1, the top part of the reactor building was severely damaged during the accident by a hydrogen explosion and rubble from that time still remains at the top of the building.
This rubble must be cleared away to remove fuel from the spent fuel pool, so that is the task in which we are currently engaged.
Going forward, we plan to complete construction of a large cover by the summer of 2025 in order to prevent the dispersion of dust and will continue to remove rubble from underneath it.
What changes has Unit 1 undergone since the accident?
What kind of preparations are underway in order to remove fuel debris?
We continue to acquire information about conditions inside the primary containment vessel. And, we are deliberating methods for retrieving fuel debris based on this information.
Where is the removed rubble taken?
After being sorted by type and dose level, rubble and other waste is stored in waste storage buildings and other facilities located on-site.
Currently, we are constructing a volume reduction facility that crushes rubble and reduces its volume in order to store it in a container efficiently. Volume reduction facility was completed and started operating in February 2024.
What is this steel tower?
It is an exhaust stack which was used before the accident as part of the reactor building’s air-conditioning system to vent air outside. The exhaust stack is no longer in use.
The seismic resistance of this exhaust stack exceeds requirements, but to eliminate the risk of it falling over the top 60m of the stack was dismantled in cooperation with a local contractor. This task was completed on May 1, 2020.
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
