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Fukushima: Robot Images Show Massive Deposits Thought to be Melted Nuclear Fuel

           

An underwater robot found solidified lava-like rocks at Japan’s destroyed Fukushima nuclear plant. Photograph: Supplied/AFP/Getty Images

Robot spots suspected debris of melted fuel for first time since 2011 earthquake and tsunami destroyed the plant

theguardian.com - Associated Press - July 22, 2017

Images captured by an underwater robot on Saturday showed massive deposits believed to be melted nuclear fuel covering the floor of a damaged reactor at Japan’s destroyed Fukushima nuclear plant.

The robot found large amounts of solidified lava-like rocks and lumps in layers as thick as 1m on the bottom inside a main structure called the pedestal that sits underneath the core inside the primary containment vessel of Fukushima’s Unit 3 reactor, said the plant’s operator, Tokyo Electric Power Co.

On Friday, the robot spotted suspected debris of melted fuel for the first time since the 2011 earthquake and tsunami caused multiple meltdowns and destroyed the plant. 

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TEPCO Chair: Nuclear Plant Must Release Contaminated Water

           

Tokyo Electric Power Co.'s new Chairman Takashi Kawamura speaks during an interview at the TEPCO headquarters in Tokyo on Thursday, July 13, 2017. Kawamura said the utility needs to stop dragging its feet on plans to dump massive amounts of treated but contaminated water into the sea and make more money if it’s ever going to succeed in cleaning up the mess left by meltdowns more than six years ago at the tsunami-hit Fukushima nuclear power plant. (AP Photo/Eugene Hoshiko)

abcnews.go.com - by Mari Yamaguchi - July 13, 2017

. . . Takashi Kawamura, an engineer-turned-business leader who previously headed Hitachi's transformation into a global conglomerate, is in charge of reviving TEPCO and leading the cleanup at the Fukushima Dai-Ichi plant. In an interview Thursday with selected media including The Associated Press, Kawamura said despite the massive costs of the cleanup and meeting tighter safety requirements, nuclear power is still vital for Japan's national security.

Below are highlights from the interview, where Kawamura spoke in Japanese:

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Dying Robots and Failing Hope: Fukushima Clean-Up Falters Six Years After Tsunami

           

Cleaning up the Fukushima Daiichi nuclear plant is expected to take 30 to 40 years. Photograph: AP

Exploration work inside the nuclear plant’s failed reactors has barely begun, with the scale of the task described as ‘almost beyond comprehension’

theguardian.com - by Justin McCurry - March 8, 2017

 . . . As the 60cm-long Toshiba robot, equipped with a pair of cameras and sensors to gauge radiation levels was left to its fate last month, the plant’s operator, Tokyo Electric Power (Tepco), attempted to play down the failure of yet another reconnaissance mission to determine the exact location and condition of the melted fuel . . .

 . . . The Scorpion mishap, two hours into an exploration that was supposed to last 10 hours, underlined the scale and difficulty of decommissioning Fukushima Daiichi – an unprecedented undertaking one expert has described as “almost beyond comprehension”.

Cleaning up the plant, scene of the world’s worst nuclear disaster since Chernobyl after it was struck by a magnitude-9 earthquake and tsunami on the afternoon of 11 March 2011, is expected to take 30 to 40 years, at a cost Japan’s trade and industry ministry recently estimated at 21.5tr yen ($189bn).

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Highest Radiation Reading Since 3/11 Detected at Fukushima No. 1 Reactor

           

Based on image analysis, a two-meter hole has been found in the metal grate under a pressure vessel in reactor No. 2's containment vessels at the Fukushima No. 1 nuclear power plant. | TOKYO ELECTRIC POWER COMPANY HOLDINGS INC. / VIA KYODO

japantimes.co.jp - KYODO, STAFF REPORT

The radiation level in the containment vessel of reactor 2 at the crippled Fukushima No. 1 power plant has reached a maximum of 530 sieverts per hour, the highest since the triple core meltdown in March 2011, Tokyo Electric Power Co. Holdings Inc. said.

Tepco said on Thursday that the blazing radiation reading was taken near the entrance to the space just below the pressure vessel, which contains the reactor core.

The high figure indicates that some of the melted fuel that escaped the pressure vessel is nearby.

At 530 sieverts, a person could die from even brief exposure, highlighting the difficulties ahead as the government and Tepco grope their way toward dismantling all three reactors crippled by the March 2011 disaster.

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Japan: Fukushima Clean-Up May Take Up To 40 years, Plant's Operator Says

          

A TEPCO employee walks in front of the No. 1 reactor building.  REUTERS/Toru Hanai

cnn.com - by Yoko Wakatsuki and Elaine Yu - February 11, 2016

Cleaning up Japan's Fukushima Daiichi nuclear plant, which suffered catastrophic meltdowns after an earthquake and tsunami hit in 2011, may take up to 40 years.

The crippled nuclear reactor is now stable but the decommissioning process is making slow progress, says the plant's operator Tokyo Electric Power Co, better known as TEPCO. . . .

. . . The biggest obstacle to closing down the plant permanently is removing all the melted nuclear fuel debris from three reactors, Ono told reporters after a press tour of the plant this week.

But TEPCO says it is in the dark about the current state of the debris.

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Disaster Preparedness Tokyo

Photo of the disaster guide from the Tokyo Metropolitan Government.Image: Photo of the disaster guide from the Tokyo Metropolitan Government.

metro.tokyo.jp

The Tokyo Metropolitan Government has compiled a manual called “Disaster Preparedness Tokyo” (Tokyo Bousai*) to help households get fully prepared for an earthquake directly hitting Tokyo and other various disasters.

“Disaster Preparedness Tokyo” is tailored to the various local features of Tokyo, its urban structure, and the lifestyles of its residents, and contains easy-to-understand information on how to prepare for and respond to a disaster.This information will be useful now and in the event of an emergency.

(VIEW SITE)*

*Guide PDFs are available for download on the site.

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Japan: Evacuation warning as Sakurajima Volcano near nuclear reactor ready to erupt

Sakurajima erupting, as seen from Higashikorimoto, Japan, on 18 August 2013(Kagoshima Local Meteorological Observatory)

Image: Sakurajima erupting, as seen from Higashikorimoto, Japan, on 18 August 2013(Kagoshima Local Meteorological Observatory)

ibtimes.co.uk - August 16th, 2015

People living near Sakurajima Volcano, 31 miles from Sendai nuclear plant, have been told to evacuate the area after a government alert was raised to the second highest level. More than 800 tremors have been detected from the volcano, according to the Kagoshima Local Meteorological Observatory.

Around 77 residents were advised to evacuate the area, and 24 had done so by 3.50pm (local time) on 15 August, the Fire and Disaster Management Agency said in a statement.

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Volcanic activity slows at Sakurajima but alert remains in force

Volcanic fumes rise from a crater near Minamidake peak on Mount Sakurajima at 4:57 p.m. on Saturday. | KYODO

Image: Volcanic fumes rise from a crater near Minamidake peak on Mount Sakurajima at 4:57 p.m. on Saturday. | KYODO

japantimes.co.jp - August 17th, 2015

Volcanic activity at Mount Sakurajima in Kagoshima Prefecture has quieted down after intensifying Saturday morning, but the Meteorological Agency said Monday it will remain on alert for signs of a major eruption.

Tectonic movements indicating swelling of the mountain has also slowed, the agency said. It believes the rise of magma from an underground chamber has subsided for now.

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Japanese Ebola test gives results in 11 minutes: researcher

AFP     April  9, 2015

Tokyo  A Japanese research team said on Thursday it had developed a field test for Ebola that gives results in just over 11 minutes -- down from the 90-minute test used now.

The breakthrough by Nagasaki University's Institute of Tropical Medicine will allow medics to move much more quickly in treating people with the haemorrhagic fever, Professor Jiro Yasuda told AFP.

"The result time was unexpectedly short," said Yasuda of the trial conducted in Guinea last month on 100 samples, of which 47 proved positive.

The Guinean government has now asked the institute and its collaboration partner Toshiba to supply equipment to roll out the test, he added.

Read complete story.
http://news.yahoo.com/japanese-ebola-test-gives-results-11-minutes-researcher-064839139.html

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Nearly All Fuel in Fukushima Reactor Has Melted, Says TEPCO

tepco.co.jp - AFP - yahoo.com
March 19, 2015

CLICK HERE - Reactor imaging technology for fuel debris detection by cosmic ray muon
(13 page .PDF report)
Measurement status report in Unit-1
March 19, 2015
Tokyo Electric Power Company

CLICK HERE - TEPCO - Handouts at press conference

New tests show almost all of the fuel inside one of the Fukushima plant's reactors has melted, its operator said Thursday, the latest step in the clean up after Japan's worst ever nuclear crisis.

Tokyo Electric Power Co. said the technology, which uses elementary particles called "muon" to create x-ray style images, gave the most concrete evidence yet the fuel had dropped to the bottom of the first reactor.

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