Kyodo, Mar 27, 2015 (emphasis added): [Tepco] disclosed that a 35-ton piece of machinery debris might be resting on the inner gate of the spent fuel pool for reactor 3… and that the gate is slightly out of position. Tepco said Thursday that a fuel-handling machine… is touching one of two gates that stand . . . → Read More: TV: Dam gates ‘shifted’ in Fukushima Unit 3 fuel pool — Damaged by massive piece of falling debris — Concern it could trigger drainage from pool — Tepco: It does not ‘appear’ to be leaking
Arnie Gundersen, nuclear expert and chief engineer at Fairewinds, Jan 29, 2015 (emphasis added): Recent scientific studies from Japan show that 75% of the radiation created by the meltdowns was released more than 5 days after the catastrophe… This data… shows that the total gaseous and liquid radioactive releases from the Fukushima Daiichi meltdown . . . → Read More: Gundersen: New data shows Fukushima exceeds Chernobyl… Plumes seen emanating from both the Unit 3 fuel pool & reactor — Nuke Engineer: Broken fuel rods are above all 3 melted down reactors — Gov’t Experts: Unit 3 explosion may have damaged spent fuel & released even more radioactive material (VIDEO)
‘The Age of Radiance: The Epic Rise and Dramatic Fall of the Atomic Era’ (2014) Craig Nelson, Simon&Schuster (emphasis added): Explosion tore through [Fukushima] Daiichi at 3:40 pm on the 14th, destroying Unit 3′s outer building… raising into the air a pink cloud. Some onlookers became terrified when winds pushed it into what to . . . → Read More: Mushroom-shaped “pink cloud” seen at Fukushima after Reactor 3 exploded — Film: Nuclear bomb explosions caused “pink clouds of radiation”; “Clouds were pink from fallout… They told everyone there’s nothing to worry about” (VIDEO & PHOTOS)
Fukushima Daiichi Accident 3 years after, Canadian Nuclear Safety Commission, Ramzi Jammal, Executive Vice-President and Chief Regulatory Operations Officer of the Regulatory Operations Branch, Physics Colloquium at Queen’s University, March 14, 2014:
Smoke from SFP at Unit 3? Quote from [The National Diet of Japan's report 'Fukushima Nuclear Accident Independent Investigation Commission'] What was . . . → Read More: Gov’t Report: Criticality suspected to have occurred in Fukushima fuel pool — Nuclear chain reaction after massive explosion at Unit 3 compressed fuel together? Concerned about ‘substantial damage’ to fuel (VIDEO)
Jiji Press, Nov. 28, 2013: [Tepco] plans to begin work next month at the earliest to remove large chunks of rubble from a spent fuel pool in the No. 3 reactor building, according to officials.
Nuclear Energy Agency, April 2013: Interim and long term roadmap until decommissioning for unit 1 to unit 4 of . . . → Read More: Tepco Adviser: Fuel is damaged in two Fukushima pools — 150 billion Bq/m³ of Cesium-137 at Unit 3, possible second explosion after 3/11 — “Certainly appears something of significance occurred”
Title: Tour of Fukushima Daiichi Source: Fairewinds Energy Education Date: October 3, 2013
At 10:15 in
Arnie Gundersen, Fairewinds Chief Engineer: Also outside [the Fukushima Daiichi Unit 3] building, fuel pellets were found in the aftermath of the accident. Now, those were bulldozed under, but that should be an indication of a major problem . . . → Read More: Gundersen: Major problem inside pool at Fukushima Unit 3 — Pieces of nuclear fuel rods were blown out during criticality explosion — Building could ‘shatter’ if another big quake hits (VIDEO)
Tepco has reported seeing steam at the Fukushima Unit No. 3 Reactor Building almost everyday from September 13-18 (Prior to September 13, no steam had been observed for over a month — since August 7):
8:00 AM on September 13 – 3:00 PM on September 13 (7 hours) 8:00 AM on September 15 . . . → Read More: Steam observed 5 of previous 6 days at Fukushima Unit 3; Lasted for 24 hours straight at one point — Nuclear Expert: There could be pockets of corium still in molten state; Nobody quite understands what’s going on (AUDIO)
NYTimes, July 18, 2013 at 5:00a ET: The operator of the Fukushima Daiichi nuclear power plant stood ready Thursday to inject boric acid into one of its most heavily damaged reactors after it found steam emanating from the reactor building. The preventive measure would stave off criticality, or an uncontrolled nuclear chain reaction, in . . . → Read More: Alarm as steam rises from Fukushima No. 3 reactor — Concern about uncontrolled chain reaction — Contains highly lethal MOX fuel — Tepco: “We don’t believe an emergency situation is breaking out” (VIDEO)
Fairewinds chief engineer Arnie Gundersen on how the extremely radioactive debris reported yesterday got on top of Reactor 3:
It has to be from fuel…. either the SFP or the reactor!
A simple hydrogen explosion would not dislodge this much radiation.
See also: Extremely radioactive rubble found on top of Fukushima Reactor No. 3 . . . → Read More: Gundersen: Extremely radioactive rubble on Fukushima Reactor No. 3 has to be nuclear fuel… from either spent fuel pool or reactor! — Can’t be from simple hydrogen explosion
Source: The Medical and Ecological Consequences of the Fukushima Nuclear Accident, Day 1 Author: The Helen Caldicott Foundation Date Presented: March 11, 2013
Questions & Answers
Arnie Gundersen, Fairewinds Energy Education: Unit 3 started as a hydrogen explosion – I am in the minority, but I think it’s more than a hydrogen . . . → Read More: Symposium Q&A: Explosion at Fukushima Unit 3 drove nuclear fuel out of storage pool — Scattered up to 2 miles away (VIDEO)
Title: UPDATE ON FUKUSHIMA Date: February 21, 2013
Chris Harris, former licensed Senior Reactor Operator and engineer: TEPCO releases video footage of Fukushima Daiichi Reactor 3 spent fuel pool [...]
Plenty of heavy steel beams and refueling equipment that must be cleared out of the way in order to see how badly damaged each . . . → Read More: Nuclear Engineer on New Footage: Little doubt that failed fuel exists in Fukushima Unit 3 pool — “Highly radioactive” (VIDEO)
Enformable, February 21, 2013: TEPCO released video footage of an investigation into the Fukushima Daiichi Reactor 3 spent fuel pool [...] The footage revealed large amounts of debris and sediment accumulating on top of the spent fuel racks which will hinder the flow of water in between assemblies and could cause future cooling problems.
. . . → Read More: New footage from Fukushima Unit 3 shows “large amounts of debris and sediment accumulating on fuel racks” (VIDEOS)
Title: Investigation of the Inside of Spent Fuel Pool Utilizing an Underwater Camera as Part of Debris Removal from the Upper Part of Unit 3 Reactor Building at Fukushima Daiichi Nuclear Power Station Source: Tokyo Electric Power Company Date: February 13, 2013
“The fuel handling machine mast’ was found on the fuel rack and . . . → Read More: Photos: Large device that fell in Fukushima Unit 3 pool was “found on the fuel rack” — “Apparently narrowly avoided striking and damaging liner”
— ハッピー (@Happy11311) February 9, 2013
Feb. 9, 2013 tweet by @Happy11311 translated by EXSKF:
In order to compliment the remote work, visual inspection is necessary. So, workers wearing heavy tungsten vests take turns to go up on the platform, and communicate with the remote control operators to carry out the work. Workers . . . → Read More: Fukushima Worker: They are wearing tungsten vests when outside Reactor 3
Title: Possibility of Debris (Assumed to be the Fuel Handling Machine Mast) Sinking in the Spent Fuel Pool at Debris Removal [...] Source: Tepco Date Recorded: Feb. 6, 2013 Date Published: Feb. 8, 2013
Possibility of the fuel handling machine mast sinking in the spent fuel pool during the steel truss debris removal at . . . → Read More: Footage of large piece of debris dropping into Fukushima Unit 3 fuel pool during snowstorm (VIDEO)
Title: TEPCO accident causes new problem at Fukushima Source: THE ASAHI SHIMBUN Date: February 08, 2013
The operator of the Fukushima No. 1 nuclear plant has admitted dislodging broken equipment weighing 1.5 tons and sending it falling further into a pool where fragile nuclear fuel rods lie.
[...] on Feb. 7, Tokyo Electric Power . . . → Read More: Asahi: Tepco to check for “smashed fuel rods” after large piece of debris fell at Fukushima Unit 3 pool
Follow-up to: Photos: ‘Protection’ to be installed over No. 3 fuel pool at Fukushima — Concern over more debris falling in
Title: Possibility of Debris (Assumed to be the Fuel Handling Machine Mast) Sinking in the Spent Fuel Pool at Debris Removal from the Upper Part of the Unit 3 [...] Source: Tokyo Electric . . . → Read More: Tepco: Debris is missing at Unit 3 — May have ‘sunk’ into fuel pool (PHOTOS)
Title: Debris Removal from the Upper Part of Unit 3 Reactor Building at Fukushima Daiichi Nuclear Power Station Source: Tepco Date: February 4, 2013
After removing the steel truss debris, protection will be installed on the spent fuel pool and debris removal from the upper part of the operation floor will be started.
. . . → Read More: Photos: ‘Protection’ to be installed over No. 3 fuel pool at Fukushima — Concern over more debris falling in
Title: Nuclear Watch: Inside Fukushima Source: NHK Date: Feb. 1 2013
Watch the video here
Regarding Enformable’s recent report (March 24th, 2011 – Neutron source found 1 mile from Fukushima Daiichi – Maybe from Unit 3 explosion), Fairewind’s chief engineer Arnie Gundersen writes in to ENENews:
Gundersen: The discovery of neutron sources off site means that the Unit 3 fuel was broken by the Unit 3 detonation. I said . . . → Read More: Gundersen: “Discovery of neutron sources off site means Unit 3 fuel was broken by Unit 3 detonation” — “I said that 18 months ago, and it looks like the NRC agrees”
Regarding Tepco’s recent statement that the fuel assemblies in the Unit 3 pool could have been damaged by shock when the steel beams or 30-ton fuel exchanger fell, Fairewind’s chief engineer Arnie Gundersen writes in to ENENews:
Another possible reason for damaged U3 racks could be a prompt, moderated criticality. What does TEPCO know . . . → Read More: Gundersen: Damage to Fukushima Unit 3 fuel racks could be from prompt moderated criticality, not objects falling in pool — What does Tepco know that they haven’t yet shown photos of?
Title: Tepco settles over nuke evacuee death Source: Jiji Date: Dec. 21, 2012
[...] Another steel beam was found during a later camera survey in addition to a 30-ton fuel exchanger and concrete pieces, which dropped into the [Fukushima Daiichi Unit 3 spent fuel] pool when a hydrogen explosion occurred at the building after . . . → Read More: Tepco: Fuel assemblies could be damaged from shock in Fukushima Unit 3 pool