SCUBA Tank Failure

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When I was poking around looking for the updated list of UN/NA Numbers for Hazardous Materials Shipment this morning, I came across a series of photos of the investigation of an explosion caused by the failure of a SCUBA tank during pressure testing. These photos can be found as part of the Cylinder Failure Analysis Reports section of the Office of Hazardous Material Safety‘s website. The site where it happens appears to be a dive center in Key Largo, FL, although upon further looking, these may be photos from two separate incidents.
From what I can tell, in at least one case the SCUBA tank was being refilled while submerged in a large tub of water. I believe this is done to cool the tank, show signs of leaking (stream of bubbles), and also to absorb some of the shock if the tank does fail. It appears that the SCUBA tank shattered, the plastic tub shattered, and the entire surrounding area was rather torn up (trees, siding, etc). A couple of the other photos appear to show blood on the gravel, right next to the point where the tank exploded. It’s truely, truely scary.
The aforementioned site is rather slow, and one has to download all of the files as part of a large, self-extracting EXE file, so I decided to mirror them in an easier to browse format.
To take a look at the pictures, either click in the photo above, or take this link: http://www.nuxx.net/gallery/scuba_tank_failures

