Search found 344 matches

by rgvandewalker
Oct 09, 2017 5:22 pm
Forum: Water-Cooled Reactors
Topic: Good news for advocates of the floating nuclear powerplant
Replies: 68
Views: 23213

Re: Good news for advocates of the floating nuclear powerpla

Puerto Rico could use one just exactly right now.
by rgvandewalker
Oct 03, 2017 4:47 pm
Forum: Reprocessing, Transmutation, Waste Storage
Topic: Yucca Mountain
Replies: 181
Views: 32773

Re: Yucca Mountain

Boreholes are the standard system for Finland, which has an authorized disposal process. (AFAIK, the only one!) I agree that they're wasteful.
by rgvandewalker
Oct 03, 2017 4:37 pm
Forum: Political, Industrial, Organizational Developments
Topic: Toshiba and Westinghouse
Replies: 148
Views: 32816

Re: Toshiba and Westinghouse

I was an employee in a structured buy-out some years ago, purchased from a Japanese company. The Japanese were good to work for, but they are from a xenophobic honor-based culture, rather than a commercial culture. (e.g. All of the executives were Japanese, driving Japanese luxury cars. Even if they...
by rgvandewalker
Sep 21, 2017 6:57 pm
Forum: Germany
Topic: "German Nuclear Closure Decision Causes EU Carbon To Jump"
Replies: 8
Views: 4067

Re: "German Nuclear Closure Decision Causes EU Carbon To Jum

The U.S. seems to have geopolitical reasons to avoid world use of nuclear power. The U.S. has a huge supply of fossil fuels: fracked natural gas, fracked oil and coal. This is a continuing source of wealth. Politicians like wealth: They can get some of it themselves, and tax some of it to give away ...
by rgvandewalker
Sep 21, 2017 6:51 pm
Forum: Netherlands, Belgium
Topic: Molten salt reactor experiment begins at Petten
Replies: 3
Views: 2058

Re: Molten salt reactor experiment begins at Petten

It sounds like they're independently confirming the MSRE results. The best thing about this is that they should be able to regenerate the materials science that was lost when ORNL scrapped and sold the MSRE's nickel-alloy material research samples.
by rgvandewalker
Sep 21, 2017 6:37 pm
Forum: General Discussion
Topic: Breadbox size device generates nuclear fusion neutrons using
Replies: 9
Views: 3054

Re: Breadbox size device generates nuclear fusion neutrons u

It sounds like some variation of a Fusor. Fusors use electrostatic confinement. Nobody knows an efficient design that makes net energy, but if you just want to make neutrons, these are easy to construct. It's almost a standard science project.

See https://en.wikipedia.org/wiki/Fusor
by rgvandewalker
Sep 21, 2017 6:30 pm
Forum: General Discussion
Topic: Ideas for reactor (questions)
Replies: 3
Views: 2257

Re: Ideas for reactor (questions)

For a very small reactor, spin the vessel. For a medium to large reactor, use a pump with its output jetted to spin the moderator/reflector. Put the drain in the bottom. The pump has to be there anyway to control the moderator temperature by running it through a radiator or heat exchanger. If the mo...
by rgvandewalker
Sep 21, 2017 5:45 pm
Forum: United Kingdom
Topic: Does Hornsea 2 spell the end of nuclear in the UK?
Replies: 7
Views: 3002

Re: Does Hornsea 2 spell the end of nuclear in the UK?

Storing as compressed air has adiabatic heating, then the heat leaks away causing losses.
by rgvandewalker
Aug 07, 2017 7:11 pm
Forum: Fluoride Reactor Processing
Topic: heat- and radiation-resistant logic
Replies: 10
Views: 9315

Re: heat- and radiation-resistant logic

Cyril, you're totally right. Even in a space-rated reactor, the controls would probably be conventional electronics on the shadow side of a shadow shield. Maybe the structural beam holding the reactor would shield the electronics, too.
by rgvandewalker
Aug 07, 2017 7:06 pm
Forum: Political, Industrial, Organizational Developments
Topic: Russia dominates exports. What hope for the West?
Replies: 18
Views: 5443

Re: Russia dominates exports. What hope for the West?

NUSCALE's SMR might be a natural fit to a nuclear barge. The barge would deliver the construction, pre-built. The SMRs are small enough to ship separately.
by rgvandewalker
Jul 31, 2017 3:35 pm
Forum: Fluoride Reactor Processing
Topic: heat- and radiation-resistant logic
Replies: 10
Views: 9315

Re: heat- and radiation-resistant logic

Vacuum-channel transistors are the same size as FETs, resist radiation (they are "tubes", scaled-down) don't need crystalline semiconductors, and run 10x faster. And also, they don't need plate heaters or hard vacuums. https://www.nasa.gov/ames-partnerships/technology/technology-opportunity-nanostru...
by rgvandewalker
Jul 31, 2017 3:11 pm
Forum: United States
Topic: Space Reactors
Replies: 12
Views: 8091

Re: Space Reactors

LFTRs can have a high power density and burnup. They're good for vehicles.
by rgvandewalker
Jul 31, 2017 3:06 pm
Forum: Political, Industrial, Organizational Developments
Topic: mPower SMR resurrected
Replies: 17
Views: 6582

Re: mPower SMR resurrected

You guys, part of the reason these people all pulled out is because Nuscale correctly timed the government submission process.
Nuscale is still in the game, and making progress against the NRC regulations. They even have a customer and a site for a test reactor.
http://www.nuscalepower.com/
by rgvandewalker
Apr 19, 2017 10:37 am
Forum: Fluoride Reactor Processing
Topic: heat- and radiation-resistant logic
Replies: 10
Views: 9315

Re: heat- and radiation-resistant logic

Space-rated electronics are well-known. These resist cosmic rays, even solar storms.
by rgvandewalker
Apr 12, 2017 6:27 pm
Forum: France
Topic: Areva's EPR troubles
Replies: 187
Views: 37761

Re: Areva's EPR troubles

This is terrible for nuclear power. It may aid LFTRs in France & the EU.