hi, bought a pub/restaurant that has a make shift cellar, out in the yard – when we bought it, it had a roof, when we took over the roof had been removed ! Apparently illegally placed in the first place..anyway…point is we’ve had beer sitting out in an extremely narrow (about 1 1/2 metres wide) with house sized surrounding walls – until it can be rebuilt we’ve had kegs outside – temperatures have reached -15 at the worst the last couple of nights and current temperatures are between -9 and -15, we have a purpose built shelving; protective shed like covering of 8 of our lines, and the top row of 4 have been unaffected yet the bottom row have just produced pure foam – now I presume what’s happened is that although not insulated (now is) as heat rises and the top row do not touch the floor, the temperatures have not dropped low enough to affect the beer – whereas bottom row of 4 touching freezing concrete floor – all foaming too much – so stored kegs and these bottom 4 have just been brought in – finally to my questions: 1. Will these frozen (not literally but must be near as damn it) simply thaw at room temperature ? and: 2. What happens with the tremendous built up pressure that WAS within the kegs at the point of attempting to dispense whilst outside in then freezing weather ?? be tremendously grateful for a quick response !
Kind Regards Martin
Gas is released from freezing beer greatly increasing the pressure within, this makes the keg container very dangerous. There will be a chance that extractor or the spear as it sometimes called, may shoot out of the top. I have seen holes in cellar ceilings, where these have come out before now. So if you were to be leaning over them connecting a keg coupler for example, it could prove fatal. Anyway if the beer has frozen in the container it will be undrinkable afterwards.
The brewers recommend:
Cover the top with a heavy blanket or tarpaulin.
Call Technical services to report it.
Allow the keg to thaw slowly.
Make sure the container is clearly marked to make your staff and the draymen aware of the problem.
It isn’t worth messing around with, stay well away.