China plans to build hybrid nuclear reactor by 2030

Point out news stories, on the net or in mainstream media, related to polywell fusion.

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Ivy Matt
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China plans to build hybrid nuclear reactor by 2030

Postby Ivy Matt » Fri Aug 14, 2015 1:25 am

The South China Morning Post has that China is planning to build an experimental hybrid fusion-fission reactor by 2030. The proposed reactor would be built at a military research facility in Sichuan province, and would use fast neutrons from fusion to burn u-238.

Reasons given for pursuing this concept are that China's sources of uranium are of a low grade, and its nuclear waste is stored on site. This reactor would be able to burn low-grade uranium and nuclear waste, and would extend the lifetime of China's uranium supply from about 100 years to several thousand years. The project may also have something to do with the announcement by Russia a year or so ago along the same lines. There are a few more details on , but beyond that I haven't seen any details about the design.
Temperature, density, confinement time: pick any two.

paperburn1
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Re: China plans to build hybrid nuclear reactor by 2030

Postby paperburn1 » Fri Aug 14, 2015 11:58 am

On a similar note has anyone heard what the outcome of the thorium reactor test in Sweden has been? I think it's supposed to end sometime this year.
I am not a nuclear physicist, but play one on the internet.

paperburn1
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Re: China plans to build hybrid nuclear reactor by 2030

Postby paperburn1 » Fri Aug 14, 2015 12:22 pm

This is a very interesting read of the politics for nuclear reactors and why we took the steps we did. and explains why we have only one design type for reactors.
http://scitation.aip.org/content/aip/ma ... /PT.5.2029
I am not a nuclear physicist, but play one on the internet.

Skipjack
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Re: China plans to build hybrid nuclear reactor by 2030

Postby Skipjack » Fri Aug 14, 2015 3:08 pm

The problem with fusion- fission- hybrids in the US is a funny one.
Fission supporters do not want to complicate their simple fission reactors with a complex fusion reactor.
Fusion supporters do not want a "dirty" fission reactor with their clean fusion reactor.
So hybrids like these, while having theoretically been possible for years, have not had a lot of support here.

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Re: China plans to build hybrid nuclear reactor by 2030

Postby kurt9 » Fri Aug 14, 2015 3:11 pm

The hybrid concept makes sense to me. Use those neutrons generated by the D-T fusion to fission U238. Not only do you get a lot more power. You eliminate the need for isotopic separation and you make use of those pesky neutrons.

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Re: China plans to build hybrid nuclear reactor by 2030

Postby krenshala » Fri Aug 14, 2015 7:05 pm

I "heard" the end of your post in the voice of the Scooby Do bad guy during the end "... and I would have gotten away with too, if it weren't for those pesky neutrons!" :D

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Re: China plans to build hybrid nuclear reactor by 2030

Postby crowberry » Mon Aug 17, 2015 7:21 am


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Re: China plans to build hybrid nuclear reactor by 2030

Postby KitemanSA » Sat Sep 05, 2015 3:49 am


Skipjack
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Re: China plans to build hybrid nuclear reactor by 2030

Postby Skipjack » Sat Sep 05, 2015 4:19 am


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Re: China plans to build hybrid nuclear reactor by 2030

Postby KitemanSA » Mon Sep 07, 2015 11:49 pm


D Tibbets
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Re: China plans to build hybrid nuclear reactor by 2030

Postby D Tibbets » Tue Sep 08, 2015 4:37 am

I was wandering why fusion sourced neutrons. The mention of fisioning U238 answers that. So long as you are not trying to reach breakeven DT- fusion, I suspect there would be plenty of neutrons around for producing addition tritium from lithium and promoting uranium fission. I expect the fusion is a small part of the energy picture (actually costing energy). The fission fuel would presumably need to be less enriched, and the control system would use the fusion neutrons to push the fission to near super critical conditions, using the conrtol rods less (along with the less enriched fuel rods). This might be a little more safe as I again suspect control rod failure is not as serious. Stopping the fusion reaction also moves the fission pile away from criticality. I wonder though about the fission breakdown products and their continued heat production. This is the problem with almost all of the fission plant accidents- loss of coolent before or after shutdown. Would this approach change the dynamics of this dangerous fission product decay situation?

Dan Tibbets
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Re: China plans to build hybrid nuclear reactor by 2030

Postby Skipjack » Tue Sep 08, 2015 4:48 am



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