I brew out on the deck. I pump the wort through 35' of line to the 27 gal ferminator in my wine cellar.
One RIS batch I forgot to remove the safety weight from the OPV valve.
The ferminaror filled about a gallon and a half.
The pressure popped the fill tube (a drilled #7 stopper in the lid) out.
The remaining 10+ gallons of 25°P RIS flowed onto the lid and then the floor of the wine cellar.
I spent the next three months unloading racks, mopping, cleaning and drying the floor, and reloading racks.