Nuclear power continues in the world

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sicetaitsimple
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Re: Nuclear continues in the world




by sicetaitsimple » 15/08/22, 20:36

Remundo wrote:To my knowledge, we have not succeeded in breeding U238 to Pu239 in thermal spectrum reactors. For this we use fast neutrons.

Are you kidding or what? All REPs produce Pu239 from U238! Which Pu participates in the production of energy by fission during its stay in the reactor.
Until having about 1% Pu when they left the reactor whereas there was none at the start (for an UNE assembly).
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Re: Nuclear continues in the world




by Remundo » 15/08/22, 20:43

are you dumb or are you doing it on purpose?

SURGENERATE!!!!

it's not collecting a Pu239 here and there! Of course you will find traces of it in a REP...

It's harvesting at least 100 Pu239 for 100 fissile elements initially present... and that doesn't happen in a PWR that has a thermal neutron spectrum.

But I repeat again: in Thorium 232, we got there with a thermal spectrum.
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Re: Nuclear continues in the world




by sicetaitsimple » 15/08/22, 20:54

Remundo wrote:It's harvesting at least 100 Pu239 for 100 fissile elements initially present... and that doesn't happen in a PWR that has a thermal neutron spectrum.

Ah yes, there OK, otherwise it would be known....
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Re: Nuclear continues in the world




by Remundo » 15/08/22, 21:01

on the other hand, the Frenchies have succeeded with Superphényx.

With a trick, however. The reactor did not breed naturally (about 80 fissile nuclei produced in the core for 100 fissions)

But by putting fertile blankets of U238 outside the reactor, about 50 more fissile nuclei appeared there.

The balance sheet was not bad at all: 125%.

Read the neutron balance
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Re: Nuclear continues in the world




by Christophe » 16/08/22, 02:51

Yes Superphenix was working... it was the (bad) policy that killed the project...

Otherwise on Thorium reactors, we had a subject from 2014: nuclear-fossil-energy/thorium-the-future-of-nuclear-t13084.html
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Re: Nuclear continues in the world




by izentrop » 16/08/22, 18:51

Christophe wrote:Yes Superphenix was working... it was the (bad) policy that killed the project...
He continues internationally
Le forum International Generation IV is a cooperation initiative initiated by the United States Department of Energy and which today brings together fourteen partners (South Africa, Argentina, Australia, Brazil, Canada, South Korea, China, United States, France , Japan, United Kingdom, Russia, Switzerland as well as Euratom).

This Article, a French adaptation of a longer document published on the Energy Matters website in 2015, shows that if you want to outpace global warming with low-carbon energy, it is better to put all your eggs in the "uranium" basket.
There are many technical and physical challenges for reactors operating with molten salts. Questions of corrosion, resistance of materials, reliability of equipment controlling the flows, efficiency of heat exchangers will have to be mastered before a safety authority can give its approval to a construction. Although interesting, albeit partial, experiments were carried out in the 1960s in the United States, safety requirements have increased considerably over the past half century.

If the thorium cycle continues to appear as a promising field of research and if it is explored by certain countries such as China and especially India, it still has many technical and pre-industrial stages to validate before appearing in the park. an energy producer (electricity or heat).

For climate and energy reasons, it is urgent to decarbonize our energy. If, in this context, nuclear power is one of the options adopted, then the uranium cycle, which can be based on decades of research and feedback from national and international experience, retains a certain advantage, either in its current version or in its breeder version.
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Re: Nuclear continues in the world




by Remundo » 16/08/22, 19:45

izentrop wrote:this shows that if we want to outpace global warming with low-carbon energy, it is better to put all our eggs in the "uranium" basket

As a matter of principle, you should never put all your eggs in one basket.
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Re: Nuclear continues in the world




by Remundo » 09/09/22, 08:57

an interesting report broadcast by Arte which puts French and German approaches into perspective.

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Re: Nuclear continues in the world




by AD 44 » 09/09/22, 10:07

Some are about to opt for other choices...

https://www.boursorama.com/actualite-ec ... 00710de157

Well ... must say that Hinkley point is not a complete success ...

(Charles III will he have a say?... He who is not really a supporter of hydraulic fracturing)
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Re: Nuclear continues in the world




by Remundo » 09/09/22, 19:34

Prince Charles is not stupid, but I don't sense in him a charisma and an extraordinary power of governance... here is someone who suffers his destiny more than he embodies it.

We'll see, he's already older too... at 74, you don't have twice the energy of 37...
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