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torus

The Latest 

Fukushima Unit 2 Containment Repair Research Underway

October 21, 2016 Editor 0 Comments concrete, daiichi, fukushima, IRID, research, torus, unit 2

IRID announced details of work that is now underway to determine if a method for repairing the unit 2 suppression

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Uncategorized 

IRID Completes Full Scale Fukushima Torus Model

May 10, 2016 Editor 0 Comments decommissioning, fukushima, IRID, model, naraha, SC, suppression chamber, torus

IRID has completed a full sized model of the torus (suppression chamber) based on the damaged reactors at Fukushima Daiichi.

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Uncategorized 

Fukushima Unit 3 3D Torus Scans Begin

December 21, 2015 Editor 0 Comments 2015, 3d, fukushima, inspection, robot, torus, unit 3

3D inspections of the unit 3 torus room are set to begin December 22nd. This work is expected to investigate

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The Latest 

Fukushima Daiichi Reactors Torus Structures In Need Of Reinforcement

June 25, 2015 Editor 0 Comments Containment, daiichi, flooding, fukushima, IRID, pcv, reinforcement, suppression chamber, torus, toshiba

IRID published a call for proposals mid June related to research and development into a way to reinforce the torus structures

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The Latest 

Fukushima Daiichi Updates From IRID Part 2; New Robots & Work

November 18, 2014November 16, 2014 Editor 0 Comments Containment, decontamination, Fukushima Daiichi, IRID, report, robots, torus

As part of reviewing IRID’s updates on work progress for Fukushima Daiichi, new information about robots to be used and

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The Latest 

IRID Works On Four New Torus Robots For Fukushima Daiichi

June 25, 2014June 24, 2014 Editor 0 Comments downcomer, IHI, IRID, pcv, robot, torus, toshiba

IRID has announced ongoing testing work on four new robots to be used to inspect inside reactors at Fukushima Daiichi.

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The Latest 

New Robot Torus Room Inspections Under Preparation In Fukushima Unit 2

June 24, 2014 Editor 0 Comments hitachi, inspection, robot, room, torus, unit 2

Two newer underwater robots are being used to inspect the torus rooms of units 1 and 2. The robots built

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The Latest 

New Unit 1 Findings Indicate Contamination Path

June 2, 2014June 2, 2014 Editor 0 Comments crack, daiichi, damage, fukushima, torus, unit 1, vent

TEPCO’s new reports on the unit 1 torus room already showed that a vacuum breaker caused an issue. Now they

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The Latest 

Fukushima Unit 1 New Torus Room Inspections

May 29, 2014May 29, 2014 Editor 0 Comments fukushima, inspection, leaks, robot, torus, unit 1

What are they doing? TEPCO & Hitachi are apparently looking for damage to the vacuum breaker pipes that run in

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The Latest 

Damage Inside Fukushima Unit 4 Containment

February 14, 2014 Editor 0 Comments Containment, damage, fukushima, room, torus, unit 4

Yomiuri has released a more detailed article after yanking an earlier version. Two Yomiuri reporters were allowed into unit 4’s

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Uncategorized 

Fukushima Unit 2 Torus Has A Hole In It

January 30, 2014 Editor 0 Comments fukushima, inspection, leak, robot, torus, unit 2

Kyodo is reporting a 3cm hole in the unit 2 torus. TEPCO claims that water is leaking out through this

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The Latest 

Fukushima Unit 2 Torus Ultrasound Finds Internal Water Level

January 23, 2014January 23, 2014 Editor 0 Comments inspection, robot, torus, ultrasound, unit 2, water

The ultrasound robot has been run inside unit 2 to attempt to determine the water level for the torus tube.

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The Latest 

Unit 1 Scans Find Highly Contaminated Vent Pipe

January 23, 2014 Editor 0 Comments contamination, fukushima, radiation, torus, unit 1, vent

Robots with sophisticated gamma scanning cameras were sent in to unit 1 to establish contaminated areas as decontamination efforts take

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The Latest 

Torus Ultrasound Inspection Being Done On Unit 2

January 16, 2014January 16, 2014 Editor 0 Comments fukushima, robot, torus, ultrasound, unit 2

TEPCO has done test runs with the ultrasound robot intended to detect the water level inside the torus tubes at

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The Latest 

TEPCO Fails To Release Portion Of Unit 1 Torus Inspection

November 21, 2013 Editor 0 Comments Corium, fuel, fukushima, meltdown, robots, room, TEPCO, torus, unit 1

TEPCO recently released videos and reports of their work in the unit 1 torus room. The work was split into

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The Latest 

Unit 1 Torus Investigation Nov 2013; Initial Findings

November 17, 2013 Editor 0 Comments 2013, boat, inspection, robot, torus, unit 1

TEPCO has done an inspection of Unit 1’s torus room, this time with a floating robot boat. TEPCO released most

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The Latest 

Unit 1 Leaks Found; We Have The Details

November 14, 2013 Editor 0 Comments Containment, Corium, leaks, torus, unit 1

TEPCO has investigated the torus room of unit 1 with the new boat robot. This was an effort to look

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The Latest 

Unit 2 Final Investigation Of Torus

March 18, 2013 Editor 0 Comments disaster, fukushima, inspection, nuclear, robot, torus, unit 2

TEPCO has completed the last portion of the investigation of the torus and downcomer pipes in unit 2. The walking

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The Latest 

Unit 2 Torus Inspection March 13, 2013

March 13, 2013March 13, 2013 Editor 0 Comments disaster, fukushima, nuclear, robot, torus, unit 2

TEPCO inspected another section of the torus of unit 2 today. It appears TEPCO intends to eventually inspect the entire

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The Latest 

New Torus Inspection At Unit 2

March 7, 2013 Editor 0 Comments daiichi, disaster, fukushima, nucleaar, torus, unit 2

TEPCO sent the unnamed walker bot back into unit 2’s torus room for another inspection effort. This trip looked at

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The Latest 

Unit 1 Torus Radiation Shows Possible Source Location

February 28, 2013February 28, 2013 Editor 0 Comments daiichi, disaster, fukushima, nuclear, radiation, torus, unit 1

TEPCO recently inspected the unit 1 torus room for a second time as we reported here. Workers involved in the

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The Latest 

Unit 1 Torus Inspection Review

February 25, 2013February 25, 2013 Editor 0 Comments daiichi, fukushima, images, inspection, nuclear, torus, unit 1, video

New work done around February 21 to 22 has been posted by TEPCO and confirmed by workers. The newest work

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The Latest 

TEPCO Restarts Nitrogen Injection In Unit 1 Suppression Chamber

January 8, 2013 Editor 0 Comments Containment, hydrogen, TEPCO, torus, unit 1

From today’s TEPCO report, they intend to restart nitrogen injection into the torus (suppression chamber). This has been done frequently

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The Latest 

TEPCO Inspects Unit 2 Torus With Walking Robot

December 11, 2012December 11, 2012 Editor 0 Comments robots, torus, toshiba, unit 2

TEPCO did inspection work at Unit 2 in the torus with the Toshiba walker-bot (it doesn’t have a name apparently)

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The Latest 

Unit 1; Post Quake Reaction & Torus Oddity Indicate Larger Problem

December 8, 2012 Editor 2 Comments Corium, quake, torus, unit 1

We have reported extensively about a phenomenon going on inside unit 1 since the accident. Whenever there is a strong

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The Latest 

Hydrogen Stays Elevated At Unit 1 Fukushima Daiichi

October 29, 2012October 29, 2012 Editor 0 Comments hydrogen, torus, unit 1

Hydrogen in the containment of unit 1 has continued to be elevated as they work to purge hydrogen from the

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The Latest 

TEPCO Trying To Remove Hydrogen From Torus

October 27, 2012October 27, 2012 Editor 0 Comments fukushima, hydrogen, torus, unit 1

This was initially reported in a TEPCO roadmap report that they were monitoring a pocket of hydrogen that has developed

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The Latest 

Unit 1 Torus Gas Inspection

October 23, 2012October 23, 2012 Editor 1 Comment hydrogen, torus, unit 1

TEPCO posted a section in a larger roadmap in Japanese about an investigation into the torus of unit 1 over

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Featured The Latest 

Unit 1, Where The Melted Fuel Is

October 15, 2012October 16, 2012 Editor 6 Comments Corium, failure, fuel, radiation, readings, torus, unit 1

Update: The source for unit 1 torus radiation had an incorrect link. The correct link has been added to the

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The Latest 

Additional Analysis Of Unit 1 Containment Inspection

September 28, 2012September 28, 2012 Editor 0 Comments Containment, daiichi, fukushima, torus, unit 1

Workers did a brief inspection inside the containment of unit 1 earlier this week. We reported the initial findings yesterday.

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The Latest 

Torus Bellows As Weak Point In Fukushima Reactors

August 1, 2012 Editor 0 Comments BWR, daiichi, design, failure, fukushima, mark 1, torus

Many penetrations and connections within a reactor vessel can cause weak points where structural failure or corium (melted fuel) leakage

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The Latest 

Unit 1 Torus Inspection: Analysis & New Additional Images

June 27, 2012October 16, 2012 Editor 1 Comment inspection, scope, torus, unit 1

The SimplyInfo team has been reviewing TEPCO’s latest effort to inspect unit 1 at Fukushima Daiichi. Work was done by

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The Latest 

140 New Enhanced Images Inside Fukushima Unit 2 Torus Inspection

April 19, 2012April 19, 2012 Editor 0 Comments daiichi, robot, torus, unit 2

We have about 140 images from the video investigation of unit 2 on April 18 using the Topy robot. The

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The Latest 

Unit 2 Robot Investigation Of Torus

April 18, 2012 Editor 0 Comments robot, topy, torus, unit 2

TEPCO has released two photos and no other details of the robot investigation into the torus room (suppression chamber) area

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The Latest 

Unit 2 Torus Inspection Video: Images And Analysis

March 16, 2012 Editor 0 Comments torus, unit 2, workers

Video was also released of the unit 2 torus inspection. The video quality is quite poor compared to the video

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The Latest 

Unit 3 Torus Inspection Video And New Images And Analysis

March 15, 2012 Editor 0 Comments inspection, torus, unit 3, video, workers

TEPCO has released a video of the 8 minute trip into unit 3. We have some enhanced still images from

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