Thursday, August 24, 2006

Go Nuclear

The Nuclear Option

See above for a lengthy, optimistic, article on the expansion of nuclear power as a way of helping reduce CO2.

My favourite under-discussed type of reactor, the Pebble bed, gets a favourable mention too:

The pebble-bed modular reactor introduces the interesting prospect of modular nuclear plants. Instead of building a massive 1,000-megawatt plant, modules each producing around 100 megawatts can be built. This approach may be particularly attractive, both in developing countries and in deregulated industrial countries, because of the much lower capital costs involved. The traditional large plants do have the advantage of economy of scale, most likely resulting in lower cost per kilowatt of capacity, but this edge could be challenged if efficient factory-style production of large numbers of modules could be implemented. South Africa is scheduled to begin construction of a 110-megawatt demonstration pebble-bed plant in 2007, to be completed by 2011, with commercial modules of about 165 megawatts planned for 2013. The hope is to sell modules internationally, in particular throughout Africa.

(By comparison, here's a list of Queensland power stations giving their generating capacity. It's clear that an indivdual module generating 165 megawatts is fairly modest in size, but it looks as if the big power stations here are comprised of smaller units anyway - eg Tarong's power is listed as 4 x 360 MW. I guess if there is a natural limit to the size of a pebble bed module, you just add more modules on site as required.)

Anyway, the whole article is good and interesting as a review of where nuclear power is likely to go. The problems are not ignored, but if Greenies want us to believe the worst global warming scenarios, then they should also figure that they are making nuclear look more attractive as part of the solution.

No comments: