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Liquid Oxygen Cylinder Explosion. Improper methods used to render scrap cylinder unserviceable Unsafe modifications to cylinder design. The incident described in the following presentation did not involve an Airgas company. Accident Profile.

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liquid oxygen cylinder explosion

Liquid Oxygen Cylinder Explosion

Improper methods used to render scrap cylinder unserviceable

Unsafe modifications to cylinder design

The incident described in the following presentation did not involve an Airgas company.

accident profile
Accident Profile
  • Two individuals (ages 42 and 60) found a liquid oxygen cylinder that had been removed from service and left at a scrap metal dealer
  • The individuals were self-employed in scrap metal cutting operations and intended to use the cylinder in their work
accident profile3
Accident Profile
  • The individuals had access to a liquid oxygen supplier where cylinder ownership would not be questioned
  • Jury-rigging fill connections, the first attempt to fill the cylinder resulted in rapid venting through the Pressure Relief Device (PRD)
accident profile4
Accident Profile
  • The PRDs were removed and plugged
  • The cylinder was filled while onboard a pickup truck
  • The cylinder, which had no vacuum, was now unable to vent excess pressure
accident profile5
Accident Profile
  • While being transported down a busy highway, the pickup truck experienced a flat tire
  • Shortly thereafter, the cylinder exploded with the results shown in the following slides
slide13

Plug/Cap

Hole in vacuum port

slide14

Annular Space

Both inner and outer shells separated at bottom welds

slide15

Vehicle Location

Cylinder exploded at 12:40 PM while transport vehicle was parked on busy Interstate highway

Cylinder Trajectory

slide16
The blast blew one individual across 5 lanes of traffic. The other was blown approximately 40 feet. Both survived
slide17

Plywood applied over hole in roof

Cylinder flew approximately ¼ mile before plunging through the roof of an apartment, severing a main natural gas line and coming to rest in the living space