独断偏見妄言録 China's Threat

中国は人類の命運を左右する21世紀最大の不安定要因

新しい原子炉用燃料 (米)

2020年09月25日 07時02分45秒 | 科学技術
The U.S. Government Made a Powerful New Kind of Nuclear Fuel
米国政府が新しい原子炉用燃料を開発した

It's part uranium, part thorium, and it may just save America's nuclear program.
それはウランとトリウムの混合物であり、米国の原子力政策を救うことになるだろう。
Sep 24, 2020
PopularMechanics

* A new, U.S.-made nuclear fuel could improve outcomes in existing nuclear plants 既存の原発で使用可能.
* Thorium is a popular talking point as a way to "clean up" nuclear energy.
* One advocate says having a U.S. nuclear product also improves our diplomatic position.


Advanced Nuclear Energy for Enriched Life, or ANEEL
It's a proprietary mix of thorium and low-enriched uranium

[T]horium has a higher melting point and lower operating temperature which makes it inherently safer than straight U and more resistant to core meltdowns.

“The ANEEL fuel has a very high fuel burn-up rate[, which] means the fuel stays in the reactor longer and gets more energy out of the same amount of fuel. [It’s] prohibitively difficult to make into a weapon. [And] ANEEL fuel will reduce the waste by over 80% and end up with much less plutonium. Less spent fuel means less refueling, less cost, less fuel handling and less volume to dispose.”



<2020年9月30日>

自然冷却でより安全に運用可能な「小型モジュール式原子炉」がついに (米) 規制当局から承認される
2020年09月04日
Gigazine

2020年8月28日、アメリカの民間原子力企業・NuScale Powerが開発する小型の原子炉が、アメリカ合衆国原子力規制委員会(NRC)の承認を受けました。この小型原子炉が現場に投入されれば、従来のものより拡張性と安全性の高い原子力発電所が設計可能になるとのことです。



Cities Snub Plan to Save Nuclear Power With Mini Reactors
2020年9月28日
bloomberg
A project to revive nuclear power by demonstrating the viability of small, factory-built reactors has a problem: At least two cities that agreed to participate have pulled out and others may join them before a Sept. 30 deadline.



<2020年10月17日>

Trump administration approves $1.35 billion for small-scale nuclear reactor project
2020年10月17日
Reuters
The U.S. Department of Energy on Friday approved $1.35 billion over 10 years for the building of the first U.S. small-scale nuclear power project, a boost to a technology struggling with cost overruns and delays, but which depends on congressional appropriations.



<2020年10月20日>

This Molten Salt Reactor Is the Next Big Thing in Nuclear
It's fast, cheap, safe, and eats up waste. What's not to like?
Oct 19, 2020
Popular Mechanics
* An industry veteran is touting a new molten salt reactor as the next big nuclear thing.
* Thermal molten salt has some growing pains, but Elysium says it has circumvented these.
* Elysium's first plant would be a 10 MWe demonstration plant to supply a small town.




<2020年12月15日>

Tiny Nuclear Reactors Yield a Huge Amount of Clean Hydrogen
December 15, 2020
yahoo

*NuScale has released new data on its small modular reactor's ability to split hydrogen from water.
*High-temperature electrolysis of hydrogen requires process heat.
*NuScale's reactor was competitive with solar electrolysis at the right scale.





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