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Video: An unprecedented challenge: Developing the "Scorpion-shaped robot"

An unprecedented challenge: Developing the Scorpion-shaped robot

In a collaborative effort, TEPCO, Toshiba, and IRID developed a "Scorpion-shaped robot" to investigate conditions of the melted-down fuel debris and the Unit 2 Primary Containment Vessel (PCV) at Fukushima Daiichi Nuclear Power Station. It would be a significant step forward in the decommissioning work to obtain any information from the PCV, such as digital images, temperature data, and radiation levels. This video introduces the challenges for this robot as well as the commitment of Toshiba engineer Takayuki Nakahara who deals with this very challenging mission.

Watch the video here

Video: "The current situation at Fukushima Daiichi NPS"
-From 3.11 toward the future- (ver, Jan. 2017)

The current situation at Fukushima Daiichi NPS–From 3.11 toward the future

Fukushima Daiichi Nuclear Power Station was attacked by a huge tsunami caused by Tohoku Pacific Ocean earthquake on March 11 2011.

We would like to show you the latest situation of Fukushima Daiichi, looking back the time of the accident.

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Video: Dismantling of Unit 1 cover panels for spent fuel removal at Fukushima Daiichi Nuclear Power Station

Dismantling of Unit 1 cover panels for spent fuel removal

This video shows various measures against dust dispersion during the dismantling work of cover panels over Unit 1 reactor building. At Unit 1, rubble from the damaged building caused by the hydrogen explosion is still scattered and needs to be removed. Cover panels were placed over the rubble to prevent the dispersion of radioactive materials, but dismantling of the panels started in July 2015 to remove the rubble. Wall pannels will be taken down around September 2016.

Watch the video here

Video: Preventing Recriticality in Fuel Debris
at Fukushima Daiichi Nuclear Power Station

Preventing Recriticality in Fuel Debris at Fukushima Daiichi Nuclear Power Station

This video will explain the conditions of the fuel retained in the reactors of Units 1-3 at Fukushima Daiichi Nuclear Power Station, and TEPCO's measures to prevent recriticality-return to a point at which a nuclear reaction becomes self-sustaining- in the fuel debris there.

Watch the video here

Application of Robot Technology

The current situation at Fukushima Daiichi NPS–From 3.11 toward the future

We have created a new web content featuring ROBOTS applied to decommissioning operations. This page introduces robot applications inside the reactor buildings, which have been disclosed chronologically in our web site, with pictures, videos, and documents.

With support and cooperation of both domestic and international corporations and organizations, robots has been applied to the operations, such as the decontamination of the high-dose radiation area and the removal of fuel debris, and contributed to the reduction of operational risk of radiation exposure.

See more on Robot Applications


Pacific Ocean

Monitoring North side of Unit 5,6 discharge channel

  • Cs-134 : ND (11/13)
  • Cs-137 : ND (11/13)
  • All β : 10 (11/13)
  • Tritium : ND (11/6)
  • Last updated :Nov 17, 2017

Monitoring North side of the north breakwater

  • Cs-134 : ND (11/13)
  • Cs-137 : ND (11/13)
  • All β : ND (11/13)
  • Tritium : ND (11/6)
  • Last updated :Nov 17, 2017

Monitoring Northeast side of the port entrance

  • Cs-134 : ND (11/13)
  • Cs-137 : ND (11/13)
  • All β : ND (11/13)
  • Tritium : ND (11/6)
  • Last updated :Nov 17, 2017

Monitoring East side of the port entrance

  • Cs-134 : ND (11/13)
  • Cs-137 : ND (11/13)
  • All β : ND (11/13)
  • Tritium : ND (11/6)
  • Last updated :Nov 17, 2017

Monitoring Southeast side of the port entrance

  • Cs-134 : ND (11/13)
  • Cs-137 : ND (11/13)
  • All β : ND (11/13)
  • Tritium : ND (11/6)
  • Last updated : Nov 17, 2017

Monitoring South side of the south breeakwater

  • Cs-134 : ND (11/13)
  • Cs-137 : ND (11/13)
  • All β : ND (11/13)
  • Tritium : ND (11/6)
  • Last updated :Nov 17, 2017

Monitoring Around the south discharge channel

  • Cs-134 : ND (11/13)
  • Cs-137 : ND (11/13)
  • All β : 8.8 (11/13)
  • Tritium : ND (11/6)
  • Last updated :Nov 17, 2017

The sampling date is provided in the parentheses.

Daily Analysis Results on Radioactive Material at Fukushima Daiichi Nuclear Power Station(Japanese site)

Parameters related to the plants at Fukushima Daiichi Nuclear Power Station

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About Compensation for Nuclear Damages

Internal exposure dose measurement for the emergency workers who have never measured their internal exposure dose
Contact information for the emergency workers at Fukushima Daiichi Nuclear Power Station who have never measured their internal exposure dose and have lost contact

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