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Nuclear Issues

The mission of this working group is to focus on discussions about nuclear issues.

Members

Amanda Cole Gina Angiola Kathy Gilbeaux Maeryn Obley mdmcdonald

Email address for group

nuclear-issues@m.resiliencesystem.org

North Korea nuclear threat: Mattis warns of 'massive military response'

bbc.com - September 3rd 2017

Pentagon chief James Mattis says any threat to the US or its allies by North Korea will be met with a "massive military response".

His comments came after a national security briefing with President Donald Trump about the secretive communist state's latest nuclear test.

Pyongyang says it has successfully trialled a hydrogen bomb that could be loaded on to a long-range missile.

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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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Are Solar and Wind Really Killing Coal, Nuclear and Grid Reliability?

           

Lessons from the Lone Star State: A surge in wind power on the Texas grid didn’t cause reliability problems (and brought down electricity prices) because regulators improved the efficiency of wholesale electricity markets. Sarah Fields Photography/Shutterstock.com

theconversation.com - by Joshua D. Rhodes, Michael E. Webber, Thomas Deetjen and Todd Davidson - May 11, 2017

U.S. Secretary of Energy Rick Perry in April requested a study to assess the effect of renewable energy policies on nuclear and coal-fired power plants.

Some energy analysts responded with confusion, as the subject has been extensively studied by grid operators and the Department of Energy’s own national labs. Others were more critical, saying the intent of the review is to favor the use of nuclear and coal over renewable sources.

So, are wind and solar killing coal and nuclear? Yes, but not by themselves and not for the reasons most people think. Are wind and solar killing grid reliability? No, not where the grid’s technology and regulations have been modernized. In those places, overall grid operation has improved, not worsened.

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What Happens If a Nuclear Bomb Goes Off in Manhattan?

Manhatten skyline. Lucas Jackson / Reuters

Image: Manhatten skyline. Lucas Jackson / Reuters

theatlantic.com - March 15th 2017 - Kaveh Waddell

On a quiet afternoon, two medium-sized nuclear blasts level portions of Manhattan.

If this were a movie, hordes of panicked New Yorkers would pour out into the streets, running around and calling out for their loved ones. But reality doesn’t usually line up with Hollywood’s vision of a disaster scene, says William Kennedy, a professor in the Center for Social Complexity at George Mason University. 

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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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The Murky Future of Nuclear Power in the United States

A view into Unit 4 at the Alvin W. Vogtle generating station in Georgia. The complex plans to use AP1000 reactors from Westinghouse. Credit via Georgia Power

Image: A view into Unit 4 at the Alvin W. Vogtle generating station in Georgia. The complex plans to use AP1000 reactors from Westinghouse. Credit via Georgia Power

nytimes.com - February 18th 2017 - Diane Cardwell

This was supposed to be America’s nuclear century.

The Three Mile Island meltdown was two generations ago. Since then, engineers had developed innovative designs to avoid the kinds of failures that devastated Fukushima in Japan. 

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Flamanville reactor blast: No nuclear risk, say officials

The two reactors at Flamanville will eventually be joined by a third.

Image: The two reactors at Flamanville will eventually be joined by a third.

bbc.com - February 9th 2017

An explosion and fire have occurred at the Flamanville nuclear plant on France's northern coast but there was no nuclear risk, officials say.

"It is a significant technical event but it is not a nuclear accident," senior local official Olivier Marmion told AFP news agency.

Five people reported feeling unwell but none was seriously injured.

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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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President Obama visits Hiroshima, speaks out against nuclear weapons

The Hiroshima Memorial.

Image: The Hiroshima Memorial.

inhabitat.com - May 30th 2016 - Lacy Cooke

About 71 years after the United States dropped a nuclear bomb on Hiroshima, Japan, President Obama visited the site and placed a wreath before the cenotaph at the Hiroshima Peace Memorial Park. It is the first visit by a “sitting U.S. President.” Both Japanese Prime Minister Shinzo Abe and President Obama delivered speeches, and Obama spoke out against nuclear weapons.

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