Cuban Locomotive Boiler Explosion

The Cuban boiler explosion was caused by a failure of the lap joint seam on the first barrel course.
A reference was made to a rumoured 20 psi per second pressure increase during an explosion. Reality is 10's of THOUSANDS of psi during THOUSANDTHS of a second.
A general comparison is that at 150 psi - 3 pounds of water has the energy equivalent of one pound of TNT. So, roughly, if a boiler holds 1000 gallons of water X 8 lbs/gallon that's (again roughly) a little less than 3000 lbs (or a ton and a half) of dynamite.
If a railroad collectively doesn't have enough knowledge and confidence in a boiler to herd several tons of dynamite down the track at 30 mph, then for everybodies sake, park the engine and go home.
The referenced link describes in probably too much detail the mechanics of a boiler explosion. If time is taken, however, to read and comprehend the article, a whole new magnitude of respect for the energy of steam will be realized.
PS> A general boiler inspector rule is that "IF you are looking at a boiler part and you even have to ask 'IS IT SAFE' then the answer is NO".