@puppeli - fair points, the plan is to just track some illumination on the inspection torch - the stock clouds are just handy to have in there, but I'll probably sim some fumefx steam which will be easier to control speed.
I think in the final shot, there won't be the light from the left anyway,...
@metalbound7 Yep, he also kindly filled the boots to model the costume for the guys at planetreplicas who are selling licensed props and costumes.