Kingman B.L.E.V.E

[DirtyDan]

https://en.m.wikipedia.org/wiki/Kingman_explosion

https://youtu.be/abQ9ZjgrK0E

Some kingman history for your perusal

Dan

[oldsmokey]

Blast
Leveling
Everything
Very
Effectively   

[DirtyDan]

Boiling liquid expanding vapor explosion

Dan

[Dave Ritsema]

Yep, Have seen that footage many times and is included in most firefighting courses on BLEVES. 

[old2soon]

        When I was on the Garrison Texas V F D and E M S natural gas in town with some still transitioning from propane tanks. Most all of our surrounding rural area at that time still on propane. NEVER had a propane tank blow while I was on The F D. BUT we were to a Man aware of these tanks when ever we were called out. Even when not called out on a fire I was very skeptical when propane to the house or mobile home was plumbed with P V C pipe. Kept those locations in my personal memory bank. Worked for the city at that time. Fire Fighting IS and continues to BE Very Dangerous. RIDE SAFE.

[9Ball]

We were trained on that in the early 80s during power plant continuing training.  I seen to recall a BLEVE can be up to 270 times the size of the original vessel.

[sheets]

It expands from is pressurized state to gaseous state 270 times. By the time the cloud of 100% gas thins out to a flammable or explosive range or air/fuel ratio of 4 to 6% gas to 95% air . . . It makes for a huge problem . . . and ball of fire.