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Reporter: Many experts now believe Fukushima’s melted fuel burned through the concrete floors and has gone down into the groundwater — “No one yet knows how deeply those 3 cores melted into the ground… No one knows where the cores are” (AUDIO)

Coast to Coast AM – ‘Fukushima & Nuclear Issues‘, Mar 31, 2016 (emphasis added):

At 42:00 in — Linda Moulton Howe, Regional Emmy Award-winning reporter: “Five years later now in March 2015, no one yet knows how deeply those three cores melted into the Fukushima ground.”

At 44:30 — Howe: “In the first days . . . → Read More: Reporter: Many experts now believe Fukushima’s melted fuel burned through the concrete floors and has gone down into the groundwater — “No one yet knows how deeply those 3 cores melted into the ground… No one knows where the cores are” (AUDIO)

Reuters: Fukushima fuel melted through containment vessels and is “spewing radiation” — Nuke Expert: Fuel has “scattered all over the place” — Gov’t: Fuel may have burned out into environment — Tepco Official: Fuel could have flowed out “like lava in a volcano” (VIDEOS)

Reuters, Mar 11, 2016 (emphasis added): Today, the radiation at the Fukushima plant is still so powerful it has proven impossible to get into its bowels to find and remove the extremely dangerous blobs of melted fuel rods, weighing hundreds of tonnes… The fuel rods melted through their containment vessels in the reactors, and . . . → Read More: Reuters: Fukushima fuel melted through containment vessels and is “spewing radiation” — Nuke Expert: Fuel has “scattered all over the place” — Gov’t: Fuel may have burned out into environment — Tepco Official: Fuel could have flowed out “like lava in a volcano” (VIDEOS)

US Gov’t: Melted fuel most likely burned through containment at Fukushima reactors; We’re concerned about failures underground… “Where did it leak out? How did it leak out? We don’t know” — Expert: Corium may have flowed into reactor buildings, burned through floor (PHOTOS & AUDIO)

Brian Sheron, Office Director of Nuclear Regulatory Commission’s Office of Nuclear Regulatory Research, NRC’s 2013 Regulatory Information Conference (emphasis added): Aqueous release occurred during Fukushima accident… Current models do not address aqueous release pathways… [NRC's Office of Nuclear Regulatory Research] is starting a program to assess: Containment failure modes that could lead to aqueous . . . → Read More: US Gov’t: Melted fuel most likely burned through containment at Fukushima reactors; We’re concerned about failures underground… “Where did it leak out? How did it leak out? We don’t know” — Expert: Corium may have flowed into reactor buildings, burned through floor (PHOTOS & AUDIO)

Japan Nuclear Expert: Simply impossible to remove melted fuel from Fukushima — Corium “has spread all over… could actually have gone through floor of containment vessel” — Only way to deal with these reactors releasing dangerous radiation is to cover in concrete — Will take centuries of work (VIDEO)

Prof. Hiroaki Koide, Kyoto University Research Reactor Institute (retired), Apr 24, 2015, starting at 31:00 in (emphasis added):

Although what I’ve been describing is quite grave, we have an even more serious issue facing us, which is the reactor cores melted in Units 1-3. What are we going to do about that?… Tepco believes . . . → Read More: Japan Nuclear Expert: Simply impossible to remove melted fuel from Fukushima — Corium “has spread all over… could actually have gone through floor of containment vessel” — Only way to deal with these reactors releasing dangerous radiation is to cover in concrete — Will take centuries of work (VIDEO)

AP: Melted fuel may have “dropped even beyond” the bottom of Fukushima plant — ‘China Syndrome’ predicted by US gov’t analysis — IAEA Expert: Pools of corium beneath reactors are up to 2 stories high (VIDEO)

AP, Mar 27, 2015 (emphasis added): [It] was billed as a way to decipher where, exactly, the morass of nuclear fuel might sit at the bottom of reactors… But what went wrong, even in a simple demonstration for reporters… was a sobering reminder of the enormous challenges that lie ahead… a programming glitch could . . . → Read More: AP: Melted fuel may have “dropped even beyond” the bottom of Fukushima plant — ‘China Syndrome’ predicted by US gov’t analysis — IAEA Expert: Pools of corium beneath reactors are up to 2 stories high (VIDEO)

Video: Fukushima had “meltdown, melt-through, & melt-out within days of quake” — US Gov’t: Analysis says containment vessel fails after fuel melts through barrier — Experts: Corium may have melted out to reactor building, prepare for radiation doses over 200,000,000 microsieverts/hour

Jiji Press, Mar 5, 2015 (emphasis added): Where is the melted fuel in the stricken reactors at Fukushima No. 1? This remains a question… cosmic rays [are being used] to “see through” the reactors… [Prof. Fumihiko Takasaki of the High Energy Accelerator Research Organization calls the] nuclear disaster a “national crisis”… muon detectors were… . . . → Read More: Video: Fukushima had “meltdown, melt-through, & melt-out within days of quake” — US Gov’t: Analysis says containment vessel fails after fuel melts through barrier — Experts: Corium may have melted out to reactor building, prepare for radiation doses over 200,000,000 microsieverts/hour

Nuclear Engineer: New video appears to show molten corium that melted out of Fukushima reactor — “Some of it is still oozing” — We’ve been talking about criticalities going on and causing continued heat for a long time now” (AUDIO & VIDEO)

Chris Harris, former licensed Senior Reactor Operator & engineer, Feb 19, 2015 (at 30:15 in):

The buildings are really in a state of disrepair at Fukushima. There’s been some new video released of what could be the molten – some of the corium – that has leeched out. We talked a long time ago . . . → Read More: Nuclear Engineer: New video appears to show molten corium that melted out of Fukushima reactor — “Some of it is still oozing” — We’ve been talking about criticalities going on and causing continued heat for a long time now” (AUDIO & VIDEO)

Nuclear Expert: Fukushima is a pretty close approximation of ‘The China Syndrome’; Melted fuel cores burned through containment vessels and material is below reactor structures mixing with groundwater — Essentially it’s a machine that’s washing radioactivity into the sea (AUDIO)

WMNF, Lessons from the Fukushima Nuclear Disaster, Mar 10, 2014 (emphasis added):

See also: US gov’t analysis says Fukushima is more serious than ‘China Syndrome’ — Destroyed reactors suffered worst type of containment failure (PHOTOS)

Full broadcast here

US gov’t analysis says Fukushima is more serious than ‘China Syndrome’ — Destroyed reactors suffered worst type of containment failure (PHOTOS)

US Department of Energy, September 2013 (emphasis added): A severe earthquake and tsunami… caused significant damages on the reactors in Fukushima… [including] containment damage… and intensive radioactivity release… This paper reviews and compares a typical BWR SPAR Level 2 model with [what] occurred in Fukushima Daiichi Units 1, 2, and 3. It shows that . . . → Read More: US gov’t analysis says Fukushima is more serious than ‘China Syndrome’ — Destroyed reactors suffered worst type of containment failure (PHOTOS)

Gov’t experts warn about mass of corium melting deeper than Japan, Tepco claim — Fukushima cores “could be eroded more extensively than announced”

World Nuclear Association, Feb. 7, 2014: [...] Different computer models have been used by Tepco and the Japan Atomic Energy Agency to analyse the positions of the cores, coming to the same conclusion for unit 1. Both models predict that all 77 tonnes of the fuel from unit 1 melted and passed from the . . . → Read More: Gov’t experts warn about mass of corium melting deeper than Japan, Tepco claim — Fukushima cores “could be eroded more extensively than announced”

Nuclear Engineer: “Very huge catastrophe” for melted fuel to burn into ground — Radioactive material “will go all around the world” once in underground water — Chernobyl made cement barrier below reactor, #Fukushima did not (VIDEO)

Global Green USA: The Future of Nuclear Energy, Chernobyl and Fukushima:

At 2:00 in

Natalia Manzurova, nuclear engineer called to Chernobyl for 4+ years to study radiation’s effect on the environment and to help cleanup workers:

To cover the burning reactor core, they started dropping bags of sand and cement into the reactor and . . . → Read More: Nuclear Engineer: “Very huge catastrophe” for melted fuel to burn into ground — Radioactive material “will go all around the world” once in underground water — Chernobyl made cement barrier below reactor, #Fukushima did not (VIDEO)

Scientific American: Fukushima will have to be entombed in sarcophagus if melted fuel in ‘bad enough’ situation — Radiation Expert: I think they’re going to put a fence around reactors and just watch site forever (VIDEO)

Scientific American, Jan. 2014: If the melted nuclear fuel [at Fukushima Daiichi] proves bad enough […] it will have to be entombed for a number of years rather than removed, because of radiation risk from what is essentially a cooled shell of ceramic armor surrounding a highly radioactive core that remains hot and is . . . → Read More: Scientific American: Fukushima will have to be entombed in sarcophagus if melted fuel in ‘bad enough’ situation — Radiation Expert: I think they’re going to put a fence around reactors and just watch site forever (VIDEO)

Image published by embassy in Japan shows Fukushima melted fuel deep underground

Radioactive Contaminated Water Leaks (Update) from the Embassy of Switzerland in Japan, Science & Technology Office Tokyo (pdf), December 2013:

View the full size image . . . → Read More: Image published by embassy in Japan shows Fukushima melted fuel deep underground

Japan TV: ‘State’ of Fukushima melted fuel unknown — Asahi: They “still do not know exactly what is going on inside” — U.S. NRC: Increased radioactive leaks at plant are “traveling underground to sea” (VIDEO)

U.S. Nuclear Regulatory Commission document on ‘Water Situation at Fukushima’ as of Sept. 20, 2013 (.pdf link here): Over the past three months, radiation measured within the plant site [...] has been increasing. The increase in radiation in the water is caused by contaminated water traveling underground to the sea. Sources of the contaminated . . . → Read More: Japan TV: ‘State’ of Fukushima melted fuel unknown — Asahi: They “still do not know exactly what is going on inside” — U.S. NRC: Increased radioactive leaks at plant are “traveling underground to sea” (VIDEO)

Senior Scientist: Fukushima cores melted through the containment vessels — I’m very concerned about sea life on West Coast accumulating radioactive material; Some contamination will arrive in concentrated pockets (AUDIO)

The Smart Show, Dec. 23, 2013:

At 38:00 in

Steven Starr, Director of the Clinical Laboratory Science Program at the University of Missouri and a senior scientist at Physicians for Social Responsibility: I still marvel at the fact that they announced that everything was under control, that there was a cold shutdown at Fukushima . . . → Read More: Senior Scientist: Fukushima cores melted through the containment vessels — I’m very concerned about sea life on West Coast accumulating radioactive material; Some contamination will arrive in concentrated pockets (AUDIO)

Nuclear Expert: Fukushima reactor cores melted right down into the ground — That radioactive material is getting washed out into Pacific Ocean (AUDIO)

Green Majority, 89.5 FM Toronto, December 6, 2013:

At 9:00 in

Gordon Edwards, nuclear expert and president of the Canadian Coalition for Nuclear Responsibility: What happened in Fukushima [...] was a series of explosions, four reactors exploded, and three of those reactors melted down — the molten fuel has gone right down into the . . . → Read More: Nuclear Expert: Fukushima reactor cores melted right down into the ground — That radioactive material is getting washed out into Pacific Ocean (AUDIO)

IAEA ***NOT for distribution***: Molten core is suspected to have penetrated Fukushima containment vessel — Prime Minister on 3/11: We couldn’t be in Tokyo if melted fuel went through containment vessel (VIDEO)

Source: Enformable Published: Dec. 18, 2013

From: GREGORIC, Miroslav Sent: Tuesday, 22 March 2011 14:42 To: IEC3 – INCIDENT EMERGENCY CENTRE Subject: Core melt at Fukushima Unit 1 from to 12 March 2011 JST ***NOT for distribution*** Importance: High

[…] Total Core-melt of Fukushima Daiichi Unit 1 on 11 or 12 March 2011 […]

. . . → Read More: IAEA ***NOT for distribution***: Molten core is suspected to have penetrated Fukushima containment vessel — Prime Minister on 3/11: We couldn’t be in Tokyo if melted fuel went through containment vessel (VIDEO)

Official: Fukushima fuel melted “on unprecedented scale” — French Gov’t: Parts of the coriums have been dispersed — AP: It’s location and condition are unknown

NHK WORLD, Dec. 17, 2013: [...] The International Research Institute for Nuclear Decommissioning [established by Japan's government] [...] held a session in Tokyo on Tuesday [...] They are seeking technologies to examine the condition of the melted fuel [...] They are also looking for possible ways to remove fuel debris [...] The institute’s managing . . . → Read More: Official: Fukushima fuel melted “on unprecedented scale” — French Gov’t: Parts of the coriums have been dispersed — AP: It’s location and condition are unknown

US Nuclear Officials: Fuel fragments were likely ejected from cladding at the 3 Fukushima reactors — Particles of fuel resemble highly radioactive ‘mystery black substance’ often seen in Japan since 3/11 (PHOTOS)

Interview with energy and nuclear policy analyst Mycle Schneider, Dec. 9, 2013 (Emphasis Added): Record radiation levels have been detected at the Fukushima nuclear power plant [...] Mycle Schneider, an independent analyst on energy and nuclear policy, talked in detail about the situation. [...] the latest cases were an indication that “there are many . . . → Read More: US Nuclear Officials: Fuel fragments were likely ejected from cladding at the 3 Fukushima reactors — Particles of fuel resemble highly radioactive ‘mystery black substance’ often seen in Japan since 3/11 (PHOTOS)

BBC: Work at Fukushima Unit 4 a “distraction”; The “real nightmare” is coming from 3 molten cores — NYTimes: Melted fuel is “all over the place… First goal is simply to stop uncontrolled releases of radioactive material” (AUDIO)

BBC Tokyo correspondent Rupert Wingfield-Hayes, Dec. 6, 2013 (at 2:30 in): They’re doing this work because that’s the easy bit. Reactor 4 was not badly damaged compared to the other reactors. There was no core meltdown, so that is the one that they can sort of get to grips with […] Reactor buildings 1, . . . → Read More: BBC: Work at Fukushima Unit 4 a “distraction”; The “real nightmare” is coming from 3 molten cores — NYTimes: Melted fuel is “all over the place… First goal is simply to stop uncontrolled releases of radioactive material” (AUDIO)

Gov’t Doc.: Re-criticality a threat at Fukushima; Concern melted fuel to change it’s form — M.I.T. Q&A: Coolability of the molten corium is questionable (VIDEO)

Mid -and -Long -Term Roadmap towards the Decommissioning of TEPCO’s Fukushima Daiichi Nuclear Power Station Units 1-4 (pg. 115), June 27, 2013: Development of technologies for controlling fuel debris criticality –> Purpose: In future, we will develop the technologies for monitoring and evaluation of sub-criticality in order to prevent re-criticality even in the case . . . → Read More: Gov’t Doc.: Re-criticality a threat at Fukushima; Concern melted fuel to change it’s form — M.I.T. Q&A: Coolability of the molten corium is questionable (VIDEO)

Tepco Adviser: 925 quadrillion Bq of contaminated water from trying to cool melted Fukushima cores in first few months after 3/11 — TV: “Tepco has no idea where the fuel is” (VIDEO)

Presentation by Tepco Adviser Lake Barrett (Part 2, pg. 20), July 29, 2011: Contaminated Water Accumulating

Feed & Bleed Core Cooling Flushed Large Amounts of Highly Radioactive Water into Building Basements Approximately 30 Million Gallons Now Approximately 25 Million Curies [9.25 x 10^17 becquerels or 925 quadrillion Bq]

CNN, Nov. 7, 2013: How do . . . → Read More: Tepco Adviser: 925 quadrillion Bq of contaminated water from trying to cool melted Fukushima cores in first few months after 3/11 — TV: “Tepco has no idea where the fuel is” (VIDEO)