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Fuel Removal from Unit 4 of Fukushima Daiichi NPS

The fuel assemblies stored in the fuel rack inside the Unit 4 spent fuel pool are to be taken out and transferred to the common pool located within the station site for centralized storage. This fuel removal operation starts on November 18, 2013. Its completion is scheduled for the end of 2014.

Completion status of transfer from Unit 4 to Common Pool

as of Feb.10,2014

Completion status of transfer will be updated every Monday.
(If the holiday falls on a Monday, it will be updated on the next working day)

Outline of the fuel removal from the spent fuel pool

The fuel assemblies stored in the fuel rack inside the Unit 4 spent fuel pool are to be taken out and transferred to the common pool located within the station site for centralized storage. This fuel removal operation starts on November 18, 2013 and will be conducted with the following steps. Its completion is scheduled for the end of 2014.

  • (1)Relocate the fuel assemblies stored in the fuel rack inside the spent fuel pool, one by one, into a transportation container (cask) underwater using a fuel handling machine.
  • (2)Lift up the cask from the spent fuel pool using a crane.
  • (3)Conduct, on the floor as high as the operating floor, such works as closing the lid of the cask and decontaminating the cask.
  • (4)Lift down the cask toward the ground using the crane to lay it on a trailer.
  • (5)Transport the cask to the common pool using the trailer.

Explanatory videos

Video taken underwater

Summarized explanation (3:42)

Cask transfer

Actual work (3:42)

Photos and videos

On-premise transportation container landing on the water and fuel removal

2013.11.18
On-premise transportation container landing on the water and fuel removal

Video taken underwater

2013.11.20
Video taken underwater

Cask transfer

2013.11.21
Cask transfer

Work at the common pool

2013.11.22
Work at the common pool

Extraction of spent fuel

2013.11.26
Extraction of spent fuel

Video taken underwater: extraction of spent fuel

2013.11.27
Video taken underwater: extraction of spent fuel

Cask transfer at common pool

2013.11.29
Cask transfer at common pool

Frequently asked questions

For frequently asked questions, please click here.

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