Energy From Thorium Discussion Forum

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PostPosted: Sep 06, 2012 10:12 am 
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A good presentation, lasting 1.5 hours, about MSR research by the French group in Grenoble.
Encouraging to see the packed auditorium - evidently there is considerable interest in this topic in France.

The only gaffe I noted was near the end, during the question period, when Heuer flatly stated that "Candu reactors were designed for proliferation" -- he is obviously confusing Candu reactors with early post-war reactors that used a non-pressurised core with metal fuel, to facilitate reprocessing to extract plutonium from low-burnup fuel (by contrast, Candu reactors use high-temperature ceramic fuel, clad in zircalloy, to operate at high temperature & pressure, with relatively high burnup, in a once-through fuel cycle where reprocessing is wholly uneconomical...)

Yes, the presentation is in French.

Le thorium et le nucleaire du futur
Published on Jul 11, 2012 by CEADSMCOM
http://www.youtube.com/user/CEADSMCOM

Colloque de l'Orme du 15 mars 2012 par Daniel HEUER (Laboratoire de Physique Subatomique et de Cosmologie, CNRS, Grenoble)

L'énergie nucléaire actuelle repose sur la fission de l'uranium-235, un isotope qui représente 0,72% de l'uranium naturel. Au XXIe siècle, les ressources en uranium naturel permettront le développement de la filière actuelle. A plus longue échéance, la production de noyaux fissiles dans le coeur du réacteur, appelée régénération, s'imposera pour la production d'énergie nucléaire. Deux options sont alors envisageables : le cycle uranium-plutonium et le cycle thorium-uranium.
Les réacteurs surgénérateurs pour le cycle uranium-plutonium ont été très largement étudiés et ce cycle est déjà partiellement utilisé avec les combustibles MOx. Il n'en est pas de même pour le cycle thorium-uranium, qui présente des avantages théoriques : la possibilité de surgénération en spectre thermique, la moindre production d'actinides mineurs et un caractère non proliférant.
Nous ferons le point sur la réalité de ces avantages et sur les différents types de réacteurs qui pourraient utiliser ce cycle alternatif. Nous présenterons ensuite les réacteurs à sels fondus particulièrement adaptés au thorium, qui, lui-même, exprime tout son potentiel dans ces réacteurs.


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PostPosted: Sep 06, 2012 12:12 pm 
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jaro wrote:
Yes, the presentation is in French.
Is there a transcript, in either French or English?


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PostPosted: Sep 07, 2012 7:24 am 
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(Via google translate)

Symposium Elm March 15, 2012 by Daniel HEUER (Laboratory for Subatomic Physics and Cosmology, CNRS, Grenoble)

Nuclear power currently rests on the fission of uranium-235, an isotope which represents 0.72% of natural uranium. The twenty-first century, the natural uranium resources will allow the development of the industry today. In the longer term, the production of fissile nuclei in the reactor core, called regeneration will be necessary for the production of nuclear energy. Two options are possible: the uranium-plutonium cycle and thorium-uranium cycle.
Breeder reactors for uranium-plutonium cycle have been extensively studied and this cycle is already partially used MOX fuel. It is not the same for the thorium-uranium cycle, which has theoretical advantages: the possibility of overgeneration thermal spectrum, the lower production of minor actinides and non-proliferating.
We will report on the reality of these benefits and the different types of reactors that could use this alternating cycle. We then present MSRs particularly suitable for thorium, which itself expresses its full potential in these reactors.


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PostPosted: Nov 15, 2012 11:52 am 
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The next Daniel Heuer presentation is on 22/11/2012 in Paris
http://energieduthorium.fr/2012/10/28/c ... -du-futur/


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PostPosted: Nov 24, 2012 11:48 am 
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johnlaurie wrote:
The next Daniel Heuer presentation is on 22/11/2012 in Paris
http://energieduthorium.fr/2012/10/28/c ... -du-futur/


Will this "Fondation Ecologie d’Avenir"/Institut de France presentation be available on YouTube ?


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PostPosted: Jan 22, 2013 5:47 pm 
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camiel wrote:
johnlaurie wrote:
The next Daniel Heuer presentation is on 22/11/2012 in Paris
http://energieduthorium.fr/2012/10/28/c ... -du-futur/


Will this "Fondation Ecologie d’Avenir"/Institut de France presentation be available on YouTube ?


A summary of Daniel Heuer's presentation, with links to the video and slides are here:
http://energieduthorium.fr/2013/01/19/c ... ire-futur/


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PostPosted: Jan 23, 2013 5:40 pm 
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johnlaurie wrote:
camiel wrote:
johnlaurie wrote:
The next Daniel Heuer presentation is on 22/11/2012 in Paris
http://energieduthorium.fr/2012/10/28/c ... -du-futur/


Will this "Fondation Ecologie d’Avenir"/Institut de France presentation be available on YouTube ?


A summary of Daniel Heuer's presentation, with links to the video and slides are here:
http://energieduthorium.fr/2013/01/19/c ... ire-futur/



Thanks for the link !


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PostPosted: Jan 27, 2013 12:10 pm 
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johnlaurie wrote:
A summary of Daniel Heuer's presentation, with links to the video and slides are here:
http://energieduthorium.fr/2013/01/19/c ... ire-futur/

Yes, thanks very much for the links !

From one of the slides....
Quote:
De l’uranium enrichi
# Il faudrait enrichir au moins à 25%

...meaning that uranium enriched to at least 25% would be required.
...which is about DOUBLE the enrichment requirement for SFRs ( sodium cooled fat reactors), and significantly above the internationally recognized limit of 20% for LEU.
No wonder the TMSR concept is failing to get much traction in the EU & Gen-IV forum....


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