Recent content by Sotan

Thank you very much Charles Smalls! Even though I knew of all the rods that pierce the bottom of the PCV, that sieve-like image makes it much less of a surprise to hear the bottom has failed on a large scale. Let me link the latest report on the Fuel Debris Portal. It contains a summary of the...

They added two more videos: Vicinity of the bottom of the Reactor Pressure Vessel (RPV) Inside the pedestal Might have to download them to be able to view them full screen. I would love to hear from people with knowledge, what they see in these images. To me it looks like most of the bottom...

New report in which they announce finding a structure that "appears to be the bottom of the PCV". The "structure" though looks like a beam, or - in another photo - like a very long cut or edge to me. Not as the original convex shape of the PCV if it was seen intact from that direction. Is it...

Three new reports on the Fuel Debris Portal site regarding the inspection of Unit 3 PCV using flying micro-drones. The first 2 reports, dated March 5 and March 12, are PDFs explaining the examination procedure and the first results. Most spectacular, most impressive is the video presented in...

Hello again and may you all have a great new year in 2026! I thought I'd point out an interesting new post on the "Fuel Debris Portal" site: Fukushima Daiichi Nuclear Power Station Unit 3 PCV Internal Investigation (non-submerged area) using Micro drones A new investigation device designed...

New post on the "Fuel Debris Portal" site. "2025.7.29 Fukushima Daiichi Nuclear Power Station Unit 3 Design Deliberation for Fuel Debris Retrieval Method" There are two links at the bottom of that article, one is the report of a sub-committee regarding fuel debris retrieval (published in March...

New report on Tepco's Fuel Debris Portal site, about the first results of the analysis of the second sample (May 29). >> Link

They completed the second "fuel debris sampling" operation. Link to report I don't want to sound disappointed but... This time it seems they retrieved 0.2g.

Two new posts on the "Fuel Debris Portal" site, dated March 19: - Status of preparations for the second fuel debris trial retrieval from Unit 2 (pdf) - Training at the Kobe Factory for the second fuel debris trial retrieval from Unit 2 (video)

Regarding the results of analyses, quoting from this report mentioned in a previous post, "The results from overall analysis performed at the JAEA Oarai Research and Development Institute (fuel debris surface element distribution, etc.) should be compiled in several months, and the results of...

Fukushima Daiichi Nuclear Power Station Completion of fuel debris trial retrieval from Unit 2 1-page report of November 7

On the "Fuel Debris Portal Site" linked in the previous post there are new reports added, most recent ones from Oct 31. One of them is a video showing the tip/fingers of the robotic arm pinching and grasping a little piece of fuel debris. A short explanation of this operation is here. Then...

A new (at least for me it's new) site by TEPCO with information about the fuel debris and news for Units 1, 2 and 3. It has an English version too. I'm thinking maybe not everyone has found it. FUEL DEBRIS PORTAL SITE Japanese version English version If you check Unit 2, for example, you get...

Looks like they ran into trouble again. "On Sept. 17, TEPCO could not confirm camera images of equipment being used to remove the debris from the No. 2 reactor of the plant, bringing a stop to the project, the utility said."

* Article in Asahi (google translated) reporting the request from Nuclear Regulation Authority to TEPCO "to evaluate the impact of radioactive material scattering outside the site, including the possibility of a hole (that might occur) in the containment vessel due to subsidence of the pressure...