https://jalopnik.com/fireworks-explosion-destroys-la-police-bomb-disposal-tr-1847210186

When I was in college, We had to do a semester-long design project for a bomb retrieval robot and detonation chamber combo machine.  It would be interesting to see how their chamber was designed and what failed and then compare the specs to what I designed 30+ years ago.  Of course in the late 80's, we had no CAD or CAE.  It was all hand calculations and paper drafting.

I'd love to see the specs for that "containment vessel" on wheels.

1 hour ago, Jeff G 78 said:

  It would be interesting to see how their chamber was designed and what failed and then compare the specs to what I designed 30+ years ago.  

A Los Angeles news station showed the chamber this morning - a big metal ball that looked like a pressure cooker on a trailer.  The lid blew off and landed in a yard 1/4 mile away.  Bad calculation on how powerful the device was that they were destroying.

8 minutes ago, psdenno said:

A Los Angeles news station showed the chamber this morning - a big metal ball that looked like a pressure cooker on a trailer.  The lid blew off and landed in a yard 1/4 mile away.  Bad calculation on how powerful the device was that they were destroying.

Either the calculations were way off or the materials/manufacturing didn't match the engineer's design.  Either way, this should never happen.  I can't imagine that there wasn't a huge factor of safety built in to the design as well.

Looks like they made some assumptions about what they were dealing with.  Somebody misread the x-rays?

https://www.latimes.com/california/story/2021-06-30/lapd-responds-to-explosion-at-scene-of-confiscation-of-illegal-fireworks

Officers also found improvised explosive devices with simple fuses — about 40 the size of Coke cans and 200 smaller objects of similar construction — and conducted X-rays to determine their contents.

Less than 10 pounds of the devices were transferred into a semitruck, which Moore said was rated, with its outer containment shell, to handle 18 pounds.