Saturday, May 26, 2012

I recently took part in a focus group discussing various aspect of electricity service in Newfoundland and Labrador. We looked at some fairly innocuous questions such as cost, value for money, maintenance or improvement of infrastructure, and so on. Many of the participants, including me, strayed from the intended pathway by introducing the issue of Muskrat Falls, but the moderator always dragged us back to the rather mundane list of prepared questions. We were there for two hours, but it was clear to me that a discussion or debate on Muskrat Falls alone would have taken up twice that time.

Now I don't intend going over what has already been said on that matter. Instead I want to raise a different aspect of the generation of electricity: the use of nuclear power. Until recently I was totally and absolutely opposed to the use of nuclear fission for this purpose. The examples of Three-Mile Island, Chernobyl, and Fukiyama were enough to convince me that the dangers associated with the operation of nuclear reactors, and the intractable problem of the disposal of spent nuclear fuel, far outweigh any potential benefits in reducing carbon dioxide emissions. Certainly, the cost of building and maintaining such reactors seem to lead to higher prices for the consumer. And those price increases have been mitigated by enormous government subsidies which, by sleight of hand, have been disguised as not coming from the pockets of taxpayers.

So what changed my mind? I came across an article on a blog called Brave New Climate (http://bravenewclimate.com) and read an item on Internal Fast Reactors (IFR). I had never before heard of such animals, and was intrigued to read more (I'm still reading the wealth of information that site contains). In simple terms, this form of nuclear fission can use existing spent fuel rods, or a form of uranium that has not been enriched to weapons grade, to generate electricity in a set-up that is designed to run virtually untended and that will in the event of a natural disaster -- flooding, earthquake -- shut itself down.

So, why has this technology not received wider publicity or support? It's hard to say. But one factor that has been cited is cost. In the facilities that were built (no more than one in any country up to now), the cost comparisons were skewed in favour of the Light Water or Heavy Water Reactors (the Canadian preferred type), because the experiments were small scale. There may have been another reason: IFRs do not produce weapons-grade material for nuclear bombs.

I'll contact the author of Brave New Climate to see if I can reproduce here some of his material, since his explanations of the technical aspects of IFRs are very clear.

One immediate benefit that comes to mind is that, if the technology can be cost-effective on a medium scale, we don't need to flood vast areas of Labrador, nor construct an absurdly long transmission line to bring electricity to markets in eastern Canada or the NE United States.

More to come.

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