From: Bill Lucy 

Out of darkness, Frank Haber says...
> Don't some reactors have a simple open cage assembly, where the cladded rods
> can be easily extracted, one by one, for reprocessing?  Don't they do that
> in Europe, all the time?

Open cage assemblies aren't common, because there are fractional errors introduced
which reduces efficiency and increases burnup in the assembly. Siemans, the maker
of most assemblies in Europe, uses closed cage assemblies of different
types, depending upon the plant.

I'm unaware of any current usage of those assemblies.

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