Since we have now completely derailed this thread from where it started………
Yes, propane tanks are designed to vent once heated to a point where the internal pressure rises above the design limit, depending on the situation this can be achieved just by sitting out in the sun on a hot day. Most times and in most circumstances this venting will prevent an explosion. These explosions which are commonly referred to as a BLEVE or rapid cylinder failure typically don’t release a large number of shrapnel pieces, but it’s not the total number that matters, just the one that happens to find you.

I was a Firefighter for 35+ years in a busy suburban dept retiring as a Deputy Chief, as well as an oil refinery Emergency Response Team member at work for 30 years. I have experienced 6 BLEVE/rapid cylinder failures first hand, all at a large commercial roofers tar pot fire at the local high school. All were standard 100lb propane cylinders that were overheated beyond the capacity of the vents when the tar pot tank failed. Out of the six cylinders only 1 had a section of tank separate from the rest of the cylinder and that was a section less than 6”x6”. Did they cause large exciting fiery explosions, yes, did they blanket the area with flying s