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 Post subject: Re: High Pressure BWR
PostPosted: Aug 01, 2017 7:51 am 
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Joined: Jul 14, 2008 3:12 pm
Posts: 5038
Sure that should fit fine. There's a shield wall and some space for steam flow in a loca (between lower drywell and upper drywell). The shield wall would be integrated with the cast iron (or concrete) and the loca drywell communication could be via embedded pipes. Ditto for the DW/WW vent lines.

This would probably allow a very large uprating with the ESBWR size containment. 5000 MW would be rather easy. If you can get 39% gross efficiency it would be 1950 MWe gross. Probably 1850 MWe net. That's a serious machine!

A concrete version (PCRV) would be interesting too, as it would be easy to integrate the reactor vessel with the containment structure - don't need reactor vessel supports. It could all be made of steel plate concrete.

Cast steel may also be an interesting option; it is tougher and stronger than cast iron and allows easy welding of pipes and nozzles (this is a tricky area with PCRV).


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 Post subject: Re: High Pressure BWR
PostPosted: Aug 01, 2017 5:59 pm 
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Joined: Jun 19, 2013 11:49 am
Posts: 1470
At that point you are limited by the availability of suitably sized turbine plant.

I believe Areva and General electric only advertise up to ~1900MWe.

Unless you went Sizewell B and had two turbine trains.
Or built some sort of bespoke quarter speed [750rpm 8-pole] machine.


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 Post subject: Re: High Pressure BWR
PostPosted: Aug 02, 2017 8:21 am 
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Joined: Sep 02, 2009 10:24 am
Posts: 511
E Ireland wrote:
Resistance to aircraft strikes is the important factor.
Varies from 44MPa/(m^0.5) to 100+

The AP1000 Shield building cylindrical section is only 36" thick and is supposed to protect the steel vessel from aircraft impacts. Althoguh the steel content has apparently been redacted.


I think the Hualong One splits the problem with an outer, concrete shell, to take aircraft impact. The inner shell is designed to withstand internal events, and I assume a collapsing outer shell.

This increases the size of the unit, but the outer dome is relatively low cost and simple, though massive. It should also make analysis simpler.


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