An error in “requalification” of the 60-pound cylinder and an “overfilling event” led to the spectacular catastrophic failure of the 60-pound cylinder. The 60-pound propane cylinder split open instantly, releasing all of its contents. The force of the explosion ripped the metal cylinder cage door off its hinges, dented and deformed other propane cylinders in the cabinet, and propelled multiple cylinders across a parking lot. Seven (7) propane cylinders were stored in a metal cylinder storage cabinet outside of a commercial business in a business park. One full 60-pound propane cylinder in the cabinet suffered a catastrophic pressure boundary failure and split open instantly, releasing all the propane contained inside.
