That not a BLEVE. That’s just a flare off of the pressure relief valve. The firemen were (properly) spraying the tank to keep the metal cool. If the firemen did not keep the tank metal cool, then an actual BLEVE might occur with potentially catastrophic results. The whole event is a training exercise on how to fight a propane fire while preventing a BLEVE.
They were too damn close. If the metal had weakened enough (from the heat) to fail, the whole thing would have blown at once, killing them all and their families 5 miles away.
