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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)

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)

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”

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”

Gundersen: I’m sure there’s a lot of damaged nuclear fuel in Fukushima spent fuel pools — The tubes are cracked — May be completely severed (VIDEO)

Fairewinds Podcast, Dec. 9, 2012:

At ~20:00 in

Nuclear Expert Arnie Gundersen, Fairewinds Energy Education: We know though that the fuel is damaged. And the reason we know that is that the radioactivity in the fuel pool water is extraordinarily high and it hasn’t really come down over the last 18 months.

Originally, people . . . → Read More: Gundersen: I’m sure there’s a lot of damaged nuclear fuel in Fukushima spent fuel pools — The tubes are cracked — May be completely severed (VIDEO)

Tepco: Cooling system stops at No. 2 spent fuel pool

June 27, 2012 Tepco handout with summarized translation by Fukushima Diary: Since 14:01 of 6/27/2012, the coolant system of SFP2 has been stopped. They confirmed the cooling pump of system A automatically stopped [...]

The water temperature was 22.9℃, it is estimated to increase at 0.24℃/h by Tepco.Tepco states they confirmed no water leakage . . . → Read More: Tepco: Cooling system stops at No. 2 spent fuel pool

Reactor Operator: FOIA response shows US knew in March that Spent Fuel Pool No. 3 leaking — “Flooding of pool may not be possible due to damage” (VIDEO)

“I was a senior reactor operator at a CE plant and was trained on a Westinghouse plant. I also got my chops as a maintenance engineer and outage planner. In 2007, I was on the B.b.5 project for coming up with mitigation strategies for events like the Fukushima event. My BWR experience is as . . . → Read More: Reactor Operator: FOIA response shows US knew in March that Spent Fuel Pool No. 3 leaking — “Flooding of pool may not be possible due to damage” (VIDEO)

NHK: Fears that walls of Fukushima spent fuel pools will erode — Tepco working to keep salt from causing holes (VIDEO)

Nov. 7 — The operator of the Fukushima Daiichi nuclear power plant has begun removing radioactive cesium from water in the No. 2 spent fuel pool, according to NHK.

“There are fears that the metal pipes and walls of the spent fuel pools will erode, as seawater was used after the accident to cool . . . → Read More: NHK: Fears that walls of Fukushima spent fuel pools will erode — Tepco working to keep salt from causing holes (VIDEO)

220 Million Bq/liter of Cesium now in No. 2 Spent Fuel Pool — SFP No. 1, 2, & 3 “clearly have significant spent fuel damage” (VIDEO)

Newly Released TEPCO Data Proves Fairewinds Assertions of Significant Fuel Pool Failures at Fukushima Daiichi, Fairewinds, August 26, 2011:

Transcript Excerpts

[...] Just 2 days ago, TEPCO released a report that has a water analysis of the condition of the spent fuel pools at Fukushima. This data was taken in August, August 19th and . . . → Read More: 220 Million Bq/liter of Cesium now in No. 2 Spent Fuel Pool — SFP No. 1, 2, & 3 “clearly have significant spent fuel damage” (VIDEO)

Enlarged 50-mile evacuation zone by US was because of spent fuel pools, not reactor meltdowns: NRC official

The NRC also had “suspicions” about the conditions of the spent fuel pools, Borchardt said… Based on that assumption, he said, the NRC recommended that U.S. residents in Japan stay 80 km away . . . → Read More: Enlarged 50-mile evacuation zone by US was because of spent fuel pools, not reactor meltdowns: NRC official

Steam from No. 2 spent fuel pool is filling reactor building, humidity at 99.9% — Cesium level now double No. 1

High radioactivity level at No. 2 reactor, NHK, May 30, 2011:

The operator of the crippled Fukushima Daiichi nuclear plant says the radioactivity level and humidity are high in the Number 2 reactor building, which will make internal operations hard. [...]

The results show the Number 2 reactor building’s radioactive cesium level is twice . . . → Read More: Steam from No. 2 spent fuel pool is filling reactor building, humidity at 99.9% — Cesium level now double No. 1

TEPCO acknowledges ‘vapor’ is still being seen at Reactors No. 2, 3 and 4 spent fuel pools

Tepco Plans New System to Cool Reactors, Wall Street Journal by Kosaku Narioka, May 22, 2011:

[...] The troubled utility, known as Tepco, said it plans to build a cooling system with water-circulation pumps and heat-exchange equipment by the end of May at the reactor No. 2 spent-fuel pool, by June at the reactors . . . → Read More: TEPCO acknowledges ‘vapor’ is still being seen at Reactors No. 2, 3 and 4 spent fuel pools

“Water dropping down from above” in Reactor No. 2 — Steaming spent fuel pool blamed

Workers find pools of water at No.2, NHK, May 19, 2011 . . . → Read More: “Water dropping down from above” in Reactor No. 2 — Steaming spent fuel pool blamed

Color-corrected image shows constant flow of smoke/steam from Reactor Units No. 2, 3, 4 (PHOTOS & VIDEOS)

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May 12, 2011 at 4:15 pm EDT . . . → Read More: Color-corrected image shows constant flow of smoke/steam from Reactor Units No. 2, 3, 4 (PHOTOS & VIDEOS)

Dawn at Fukushima: Enhanced image exposes smoke/steam billowing from reactor buildings No. 2, 3, 4 (PHOTOS)

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May 11, 2011 at 4:30 pm EDT . . . → Read More: Dawn at Fukushima: Enhanced image exposes smoke/steam billowing from reactor buildings No. 2, 3, 4 (PHOTOS)

Smoke/steam pouring out of Reactor Units No. 2, 3, 4 (PHOTOS & VIDEOS)

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TBS News Live Feed . . . → Read More: Smoke/steam pouring out of Reactor Units No. 2, 3, 4 (PHOTOS & VIDEOS)

IAEA: White “smoke” continues to be emitted from units No. 2 and 3

Fukushima Nuclear Accident Update Log, IAEA, May 3, 2011:

Overall, the situation at the Fukushima Daiichi nuclear power plant remains very serious. [...]

White “smoke” continues to be emitted from Unit 2 and Unit 3. There was no more white “smoke” seen emanating from Unit 4 as of 21:30 UTC on 25 April or . . . → Read More: IAEA: White “smoke” continues to be emitted from units No. 2 and 3

IAEA: ‘Vapor’ rising from reactors No. 2, No. 3 and No. 4

Reactor Flooding Effort Proceeds at Japan Reactor, Global Security Newswire, April 27, 2011:

Workers continued the insertion of nitrogen gas into the No. 1 reactor to prevent additional explosions. White vapor continued to exit reactors No. 2, No. 3 and No. 4, according to an IAEA statement. [...] (International Atomic Energy Agency release).

Read . . . → Read More: IAEA: ‘Vapor’ rising from reactors No. 2, No. 3 and No. 4

Radiation at No. 2 spent fuel pool millions of times above normal & thousands of times higher than troubled No. 4 pool

Tepco starts to pump out turbine unit, Japan Times, April 19, 2011:

… Monday night, Tepco said it detected high radioactivity coming from the spent fuel pool of the No. 2 unit, indicating that either the fuel rods in the pool were damaged or steam containing radioactive materials that rose from the reactor dissolved . . . → Read More: Radiation at No. 2 spent fuel pool millions of times above normal & thousands of times higher than troubled No. 4 pool

‘Severe spike’ in radiation around No. 2 spent fuel pool — Japan officials say damage to spent fuel rods ‘could not be ruled out’

Radiation near Japan reactors too high for workers, Associated Press, April 18, 2011:

A pair of thin robots on treads sent to explore buildings inside Japan’s crippled nuclear reactor came back Monday with disheartening news: Radiation levels are far too high for repair crews to go inside. …

Officials said Monday that radiation had . . . → Read More: ‘Severe spike’ in radiation around No. 2 spent fuel pool — Japan officials say damage to spent fuel rods ‘could not be ruled out’

Spent fuel pool at No. 2 is steaming — Also white haze above No. 3

Spent fuel pool causing steam over Japan reactor, Reuters, March 22, 2011 at 11:21 am GMT:

Report here.

TEPCO confirms No. 2 fuel rods FULLY exposed once again

Reuters, 11:45 am EDT . . . → Read More: TEPCO confirms No. 2 fuel rods FULLY exposed once again

TEPCO: Fuel rods at Fukushima No. 2 reactor were FULLY exposed — Third explosion feared

TEPCO “reported the loss of cooling functions as an emergency to the government.” . . . → Read More: TEPCO: Fuel rods at Fukushima No. 2 reactor were FULLY exposed — Third explosion feared

TEPCO reports fuel rods of No. 2 reactor of Fukushima plant may have partially melted

Kyodo News, 9:08 pm in Japan:

BREAKING NEWS: Fuel rods of No. 2 reactor of Fukushima plant may have partially melted: TEPCO (21:08)

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