they will work fine as fermenters, but if I understood you correctly, you cant use them as brite beer tanks, (they wont hold pressure). Hess Brewing as well as myself and several others have used them successfully (apparently) so far with no ill affects.Originally Posted by HobKnobBrewery
I dont fill beyond the 80 gallon mark for fermentations because I have had them "blowoff" or overflow with everything over that amount.
there are several 100+/- gallon SS, brite beer tanks available for around $2,500 from a couple of different suppliers. (DO YOUR HOMEWORK), they are not all created equal. you dont "HAVE" to have a brite tank, but that means you will be carbing in the kegs like you do homebrewing and cant fill them all the way up because you have to leave head space in order to force carb in the keg. you will either have to put casters on the fermenter stands to either roll them into your cold room/fermentation room or use a 1/2" ss coil immersion setup / wine tank plate chillers and run glycol through the coils or plates in order to temp control your beer. (insulate them well).
hope that helps.