Denis, I couldn't find anything specific in the Policies and Procedures. Here's the response I got from our Group and Area Commissionor when I asked about making alcohol burning stoves:
"I would encourage youth to get the skills making their own solid fuel burning stoves. I would NOT encourage youth to make their own liquid fuel burning stoves, an unsafe liquid fuel stove runs way too much risk of serious injury/death due to explosion and human torch issues. If you have some solid/sane/experienced senior scouts: Maybe just for them. We do not currently have any like that."
He's a very experienced guy and someone that I respect a lot. His word is as good as gold to me when it comes to interpreting the BP & P.