This post is from December 2007. Facts and links may have changed since. See more from that month

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Silence is highly enriched uranium

I have to admit I’m quite surprised that my “long weekend“ post generated quite as much heated comment as it did. But that, I guess, is the pleasure of blogging on the Wonk.

Anyway, now for something completely different: highly enriched uranium (HEU) elimination. At a meeting in London a few weeks ago, a UK official said something I’d never heard before about HEU-fuelled submarine reactors. Discussing the issues surrounding the total elimination of HEU, the official said that he had received clearance to say that HEU-fuelled submarines have two advantages. First, they don’t need refuelling (which is widely known). Second, because the reactors are physically smaller they are quieter. I’d never heard this before but it certainly sounds plausible (although I’m not a reactor physicist).

This helps explain, I think, why the UK and US are as sensitive as they are about the issue eliminating HEU-fuelled naval reactors. Regardless of whether you think quietness is a good excuse for keeping them, the UK government deserves credit for explaining this and helping to inform the debate that little bit more.

James Acton

Writing on ACW 2007–2010

James M. Acton is co-director of the Nuclear Policy Program and senior associate at the Carnegie Endowment. A physicist by training, Acton specializes in deterrence, disarmament, nonproliferation, and nuclear energy. His current research focuses on the nuclear fuel cycle in Japan and hypersonic conventional weapons.

All posts by James Acton