for Japanese


9 February, 2015

Using Muons to Investigate Fuel Debris

Muon measuring equipment placed temporarily outside of the Fukushima Daiichi premises

On January 29, the Agency for Natural Resources & Energy (ANRE), part of Ministry of Economy, Trade and Industry (METI), released a progress report on decommissioning work being carried out at the Fukushima Daiichi Nuclear Power Station.

In connection with the removal of spent fuel from the Unit 3 spent fuel pool, work was completed in December to remove the control console of a refueling machine from the pool that had been accidentally dropped last summer. Additional protective boards were installed during the period from January 14 to 20, as a preventive measure.

To determine the position of fuel debris in the Unit 1 reactor, TEPCO will undertake measurements using muon observation technology. Also known as the “muon permeation method,” which uses cosmic ray muons, the technology has already had small-scale demonstration tests carried out.

The measuring equipment will be installed outside the reactor building on the northwest side. Measuring should begin in early February if all things go well.


This site uses Akismet to reduce spam. Learn how your comment data is processed.

SNS facebooktwitter

NPPs Map


Voices from Nuclear Industry – Contributing to a clean and resilient recovery

3 September, 2020
Voices from Nuclear Industry – Contributing to a clean and resilient recovery03:59

Recent News

23 September, 2020
Hitachi to End Business Operations on UK Nuclear Power Project
15 September, 2020
Japan’s Cabinet Office to Hold Virtual Side Event on Radiation Cancer Therapy at IAEA General Conference
10 September, 2020
New Report Released on Nuclear Power’s Role in Dealing with Environment Issues
4 September, 2020
Japan’s NRA Says RFS’s Recyclable-Fuel Storage Center Is Compatible with Regulatory Standards
3 September, 2020
JAIF Issues Joint Video Message with Foreign Counterparts
27 August, 2020
METI Minister Kajiyama Stresses Importance of Realizing HLW Final Disposal
7 August, 2020
Nuclear Powered Ship Mutsu Designated as Special “Ship Heritage”
3 August, 2020
On Taking Office as JAIF President
3 August, 2020
Nuclear Energy Buyers Guide in Japan 2020-21 is now available
31 July, 2020
Thoughts on the Decision to Approve Changes to the Reprocessing Business