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PostPosted: Sep 23, 2015 11:26 am 
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Dan Yurman's article on today's news of deal between Terrapower and CNNC to prototype and commercialize the "Traveling Wave" reactor.

Terrapower inks deal with China’s CNNC to build fast reactor


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PostPosted: Sep 25, 2015 4:46 am 
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AP1000 design of US origin has been developed in China before being approved by the US NRC. Outsourcing of development to China after the initial design seems to be an expedient arrangement. There is no reason why the Terrapower should not follow the Westinghouse example. In case of MSR, even the design has been undertaken by the Chinese.
I hope the Terrapower will popularise the design as a means to dispose off the used LWR fuel stocks. They need to develop an economical reprocessing method too.
The UK, the holders of a large fissile fuel stocks, are stuck with costly French systems. Could they possibly take the lead with a fast MSR breeder? Moltex could be starting point.
If the rest of the world stumbles, Russia and China are quite steady on their nuclear feet.


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PostPosted: Oct 03, 2017 6:53 am 
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Location: Taunusstein, Germany
TerraPower Establishes Joint Venture with CNNC for TWR Co-Development


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PostPosted: Oct 04, 2017 9:57 am 
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Puts China firmly on fast reactor path. I wonder if they will buy up the RG recovered plutonium stocks quickly?


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PostPosted: Oct 05, 2017 1:00 pm 
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'Traveling Wave Reactor' has become somewhat of a misnomer. As I understand the TerraPower design is now more like a standing wave reactor, where they try to shuffle the fuel around during the lifetime of the reactor. But it's really just a sodium-cooled fast reactor, which has already been tried and tested in several countries (EBR-II, Phenix, BN-800...)


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PostPosted: Oct 06, 2017 7:11 pm 
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Fast reactors are a new technology currently in progress only in India, Russia and China. Nothing wrong in an American company developing it in China.


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PostPosted: Jun 02, 2018 9:24 am 
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TerraPower’s Nuclear Reactor Could Power the 21st Century

Quote:
Feinberg imagined what we now call a breed-and-burn reactor. Early proposals featured a slowly advancing wave of nuclear fission through a fuel source, like a cigar that takes decades to burn, creating and consuming its fuel as the reaction travels through the core. But Feinberg’s design couldn’t compete during the bustling heyday of atomic energy. Uranium was plentiful, other reactors were cheaper and easier to build, and the difficult task of radioactive-waste disposal was still decades away.

The breed-and-burn concept languished until Edward Teller, the driving force behind the hydrogen bomb, and astrophysicist Lowell Wood revived it in the 1990s. In 2006, Wood became an adviser to Intellectual Ventures, the intellectual property and investment firm that is TerraPower’s parent company. At the time, Intellectual Ventures was exploring everything—fission, fusion, renewables—as potential solutions to cutting carbon. So Wood suggested the traveling-wave reactor (TWR), a subtype of the breed-and-burn reactor design. “I expected to find something wrong with it in a few months and then focus on renewables,” says John Gilleland, the chief technical officer of TerraPower. “But I couldn’t find anything wrong with it.”

That’s not to say the reactor that Wood and Teller designed was perfect. “The one they came up with in the ’90s was very elegant, but not practical,” says Gilleland. But it gave TerraPower engineers somewhere to start, and the hope that if they could get the reactor design to work, it might address all of fission’s current shortcomings.

The TerraPower team, led by Wood and Gilleland, first tackled these challenges using computer models. In 2009, they began building the Advanced Reactor Modeling Interface (ARMI), a digital toolbox for simulating deeply customizable reactors. With ARMI, the team could specify the size, shape, and material of every reactor component, and then run extensive tests. In the end, they came away with what they believe is a practical model of a breed-and-burn TWR first proposed by Feinberg six decades ago. As Levesque recalls, he joined TerraPower when the team approached him with remarkable news: “Hey, we think we can do the TWR now.”


Attachment:
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twr-cutaway.jpg [ 229.69 KiB | Viewed 280 times ]


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PostPosted: Jun 05, 2018 10:37 pm 
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Kirk Sorensen wrote:
TerraPower’s Nuclear Reactor Could Power the 21st Century

Quote:
Feinberg imagined what we now call a breed-and-burn reactor. Early proposals featured a slowly advancing wave of nuclear fission through a fuel source, like a cigar that takes decades to burn, creating and consuming its fuel as the reaction travels through the core. But Feinberg’s design couldn’t compete during the bustling heyday of atomic energy. Uranium was plentiful, other reactors were cheaper and easier to build, and the difficult task of radioactive-waste disposal was still decades away.

The breed-and-burn concept languished until Edward Teller, the driving force behind the hydrogen bomb, and astrophysicist Lowell Wood revived it in the 1990s. In 2006, Wood became an adviser to Intellectual Ventures, the intellectual property and investment firm that is TerraPower’s parent company. At the time, Intellectual Ventures was exploring everything—fission, fusion, renewables—as potential solutions to cutting carbon. So Wood suggested the traveling-wave reactor (TWR), a subtype of the breed-and-burn reactor design. “I expected to find something wrong with it in a few months and then focus on renewables,” says John Gilleland, the chief technical officer of TerraPower. “But I couldn’t find anything wrong with it.”

That’s not to say the reactor that Wood and Teller designed was perfect. “The one they came up with in the ’90s was very elegant, but not practical,” says Gilleland. But it gave TerraPower engineers somewhere to start, and the hope that if they could get the reactor design to work, it might address all of fission’s current shortcomings.

The TerraPower team, led by Wood and Gilleland, first tackled these challenges using computer models. In 2009, they began building the Advanced Reactor Modeling Interface (ARMI), a digital toolbox for simulating deeply customizable reactors. With ARMI, the team could specify the size, shape, and material of every reactor component, and then run extensive tests. In the end, they came away with what they believe is a practical model of a breed-and-burn TWR first proposed by Feinberg six decades ago. As Levesque recalls, he joined TerraPower when the team approached him with remarkable news: “Hey, we think we can do the TWR now.”


Attachment:
twr-cutaway.jpg


Still seems like embracing inherently safer technology would be a better concept...TWR appears to solve the "problem" of lack of fuel, which isn't a commercial/financial issue...


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