I'm not going there! A more complicated but less destructive method of squeezing out He along with the D2 might be reverse electrolysis of the active fuel with capture of the evolved gases..
I don't blame you for that. I wasn't trying to scare monger, but if it does prove to be an issue, it could be awkward.
I wonder if you would care to elucidate on the concept of reverse electrolysis, I was not aware of an electrolytic aspect to this approach to LANR. If I am to become involved in something, I like to learn as much as possible first.
Capture of the evolved gases...yes. If a reactor is expected to run for months, this will be an integral part of the schedule. No problem once the He is out of the lattice, it would be extracted semi continuously and separated, externally, from the D2, probably by a heat orientated Pd filter type process, with recycle of the high D2 raffinate.
I don't think it is likely to be too much of a prob., as TM has run his reactor at highish COP for months. If He were to be a total no-no, either held within the lattice, or as part of the lattice-external gas inventory, then one would have thought it may well have shown up by now. I just like to think ahead re the bigger picture. Probably a bit too much, which is why your first reaction is probably the best- let's not go there. We have enough problems before we get to that stage!