This video was shared with me from outside the USA. The audience certainly does not understand what they are witnessing or they would not be watching so closely. Although we can not see the fire impinging on the vessel, we can see the RV discharge has ignited. Then after a few moments, I’m told this BLEVE occurred rather quickly after the initial fire, we see the failure. Here is the screenshot of that moment and in it was can see the tell-tale signs this was indeed a BLEVE:
1) large section of the tank at the front of the pressure wave
2) large amounts of gas visible, followed by its ignition
Here are the two videos: 1) full video in real-time, 2) the slow-motion version