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 Post subject: Transatomic Power on CNN
PostPosted: Aug 25, 2014 9:23 am 
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Hello,

http://www.cnn.com/video/data/2.0/video ... t.cnn.html

I was watching Fareed Zakaria on CNN and was glad, and surprised, to see the following discussion on MSR technology. The interview is only about 10 minutes long but covers some of the important benefits MSR's. I wish Ms. Dewan could have squeezed in a comment about some of the inherent safety benefits of MSR's but there may not have been enough time.

I've been reading this Forum since 2010 and happy to participate.

Mike


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PostPosted: Aug 25, 2014 7:04 pm 
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Any positive press is good. The more people that are singing the same song, the more likely it will get heard. It is clear that she was referring to ORNL work. I took a look at their web page and there is not much there. The more allies and interest the better.

Does anyone have more info on Transatomic Power?
http://transatomicpower.com/


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PostPosted: Aug 26, 2014 10:26 am 
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michael.runyan wrote:
Any positive press is good. The more people that are singing the same song, the more likely it will get heard. It is clear that she was referring to ORNL work. I took a look at their web page and there is not much there. The more allies and interest the better.

Does anyone have more info on Transatomic Power?
http://transatomicpower.com/



There are lots of posts on this forum discussing Transatomic and their reactor design. The search function is your best bet.

The reason their design is interesting, beyond being a MSR:

Uses LWR SNF
Bimodal neutron spectrum (maximizes burn up - achieved by using Zirconium Hydride moderator)
Relies on unspecified (undiscovered?) cladding material to protect the moderator. ZrH is highly soluble in molten salts.


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PostPosted: Aug 26, 2014 3:11 pm 
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Location: Vitoria-ES-Brazil
MikeP wrote:
Hello,
I wish Ms. Dewan could have squeezed in a comment about some of the inherent safety benefits of MSR's but there may not have been enough time.

Just the statement that the reactor would survive a fukushima style catastrophe without melting down is already a strong statement, she does explain the drain tank concept in a fashion adequate for non technical people to vaguely understand.
I couldn't ask for more, considering the limited time. This article was more useful to advancing the MSR cause than many hours of youtube videos. Due to the audience Fareed Zakaria GPS should have even compared to normal CNN audience (people looking for rational information instead of the what's the worst thing that happened in every corner of the world today CNN programming).
Plus Mr. Zakaria shows he's pro nuclear (between the lines). Given Mr. Zakaria reasonable approach to most subjects, I would expect no less.

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PostPosted: Aug 26, 2014 6:59 pm 
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Fukushima wouldn't have killed a modern LWR design like an ESBWR either - its not really a statement unique to MSRs.


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PostPosted: Aug 26, 2014 7:29 pm 
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Provided the squib valves and the other valves required to realign the system
fired off properly.

And how do you reset these valves?


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PostPosted: Aug 27, 2014 12:16 am 
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Transatomic and SMSR from the MOLTEX are the simplified ideas on the MSR. UK already have enough of reprocessed plutonium for the fissile feed for MSR.
With uranium recovered simultaneously from reprocessing, any of these designs could be taken to a prototype stage. LFTR could also be possible with thorium as the fertile fuel.There is a job waiting for the Weinberg foundation.
P.S. Integral MSR from Terrestrial energy proposes to use the heat directly in oil extraction. It could be a useful idea to use the entire heat directly before rejecting most of it in cooling in electricity production. Using the hot steam for hydrous pyrolysis of coal, biomass or municipal refuse could also be a good idea.


Last edited by jagdish on Aug 28, 2014 1:01 am, edited 1 time in total.

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PostPosted: Aug 27, 2014 7:07 am 
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djw1 wrote:
Provided the squib valves and the other valves required to realign the system
fired off properly.

As I understand it in the ICS system itself there are no squib valves - and the valves required to activate the system are powered by redundant on site battery circuits. It is difficult to conceive an incident that would disable off site AC power, diesel generators and the battery systems in the seconds required to trigger the scram. The generators for the ESBWR are air cooled and on top of the containment and are thus essentially immune from all reasonable tsunamis. A single air cooled generator saved Reactor 4 after all.

You could even borrow a tiny section from the RBMK playbook and use energy from spinning down turbines to open the valves - it only takes a couple of seconds.

Remember Fukushima was not a tsunami triggered scram - the reactors shut down and were in cooling before the Tsunami arrived and it is likely that had they been ESBWRs they would already be operating on ICS-enabled passive cooling.
Then the Japanese government has 72+ hours (longer than that as the refill pumps would be dropping fresh water into the makeup line right up until the tsunami takes out the supply - and the first hour is the hottest) to either repair the pump on the roof of the building or helicopter in a ~10hp pump.
In the worst case you can even drop sea water into the isolation system although its almost certainly not a good idea it would avoid a meltdown. A barge full of water should be available before it becomes a neccesity.
djw1 wrote:
And how do you reset these valves?


Assuming no LOCA occurs and it is just a cooling requirement the ICS can be reset and you can then proceed with a standard cold-restart once Xenon reactivity loss is no longer a problem. Assuming you didn't have to resort to sea water into the ICS system.
Certainly sounds easier than a melt plug.


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PostPosted: Aug 27, 2014 8:49 am 
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Off topic---go discuss ESBWR on another thread.


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PostPosted: Aug 29, 2014 11:43 pm 
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Might be more acceptable to discuss another MSR?
ftp://liblice2008.ujv.cz/Liblice2008/Li ... rapide.pdf


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PostPosted: Aug 30, 2014 9:23 am 
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No this thread is about Transatomic. If you want to talk about a different MSR follow an existing thread or start a new one if no thread exists.


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