ralph, yes, that's what we've been thinking about for the bek. the problem is the gek with the pyrocoil and drying bucket (which together = the TOTTI) only need one big barrel. the pyrocoil and drying bucket are still without a motivated container.
the pyrocoil and drying bucket do bolt together and nest inside one another, with all the outside flanges lining up for flat edges, thus they play reasonably nicely with boxes. but still, it would be nice to have a more robust ship barrel for these two that actually had a purpose on the other end.
here's what the russian doll insides of the big barrel look like inside. again, the big barrel becomes the monorator hopper on the user's end. the base is modified with new flanges to provide the condensate trap ring and drain.