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Scuba Cylinder kills fire fighter

Discussion in 'Tanks, Valves and Bands' started by akdeepdiver, May 23, 2019.

  1. Bob DBF

    Bob DBF Solo Diver

    # of Dives: I just don't log dives
    Location: NorCal
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    There are two threads running on this accident, the other in tanks Valves & bands. From that https://www.firerescuemagazine.com/content/dam/fire-rescue/downloads/face201810.pdf which shows the valve being broken off along the way.

    Bob
     
  2. tech_diver

    tech_diver Dive Equipment Manufacturer

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    Reading the narrative of the event is absolutely frightening. I think about all the years I spent around hundreds of scuba tanks in various conditions (including tanks in countries with very lax regulations.)


    When I saw the pictures of the tanks, I couldn't believe how wasted they were. If you look around at the price of the equipment in a firehouse, scuba tanks are relatively cheap. Even in my pirate dog days, I don't think I would have been comfortable with that tank, much less paid money for it. I understand that budgets are often shrinking but to risk life over a tank that you saved 50-60 bucks on isn't worth it. (and ,yes, I know you can get a killer deal on a used tank if you know what to look for.)

    It all reminded me of a phone call I got when I worked in a dive shop decades ago. It was the early 90s so tech diving was just being born and I was doing 200 foot tech dives with hyperoxic deco mixes. The phone at the dive shop rings...


    "Hello, I'm * name redacted * with the * name redacted * Fire Department. We setting up a dive rescue team and we're looking to buy some gear. Do you guys have any old used gear that you can sell us? We're on a budget so we need a good price."


    I was building up my tech diving systems with redundant buoyancy, redundant gas supplies and oxygen clean parts. Were these guys going to be the ones to rescue me if I got in trouble? Were they the ones that would dive to recover my body? It really concerned me and I never forgot that call.

    I think public safety diving has come a long way since then...
     
  3. guruboy

    guruboy Divemaster ScubaBoard Supporter

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  4. guruboy

    guruboy Divemaster ScubaBoard Supporter

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    I doubt a fire department dive team will attempt a body recovery on a tech diver.
     
    Bob DBF likes this.
  5. TrimixToo

    TrimixToo Regular of the Pub

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    Location: New York State
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    Since the knob, outer retainer, and stem can all be removed with the valve in place and closed, and none of them retain the valve or are pressurized when the valve is closed, I am not sure why one would not first try to replace the stem, screw the retainer back in, and them open the valve as usual with a (perhaps new) knob. Other things could follow after that, but this seems simple enough. What am I missing?
     
  6. tridacna

    tridacna ScubaBoard Supporter ScubaBoard Supporter

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    Nothing. We solved the problem.
     
  7. Storker

    Storker Divemaster

    # of Dives: 100 - 199
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    A ScubaBoard Staff Message...

    Duplicate threads merged

     
    chillyinCanada likes this.
  8. couv

    couv Instructor, Scuba

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    Quote taken from the article. "The unsecured cylinder began to spin, rotate and bounce off the engine bay floor until it became an airborne projectile. The airborne cylinder struck a concrete block wall, causing the cylinder valve body to shear off, resulting in a larger oriface for the cylinder contents to vent through. "

    Does the above sound possible, or could the order of events be wrong? It seems more plausible that the valve was sheared before the tank became airborne.
     
    Bob DBF likes this.
  9. johndiver999

    johndiver999 Manta Ray

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    Location: Gainesville FL
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    The whole scenarios sounds unlikely to me. I am also somewhat surprised that the report was able to come to such a definitive conclusion and precise narrative about the sequence of events which probably occurred in a few moments. Perhaps there was surveillance video?

    However, it does make sense to me. I find it difficult to believe that the air leaving a burst disc orifice had enough energy to propel a tank at a velocity that would cause the entire valve to shear off, but on the other hand, it seems more improbable that someone using a small wrench or socket on a burst disc bolt would be able to apply enough force to snap a valve off. That seems entirely impossible to me.
     
  10. Basking Ridge Diver

    Basking Ridge Diver Solo Diver

    # of Dives: 200 - 499
    Location: New Jersey
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    So "The National Institute for Occupational Safety and Health (NIOSH, /ˈnaɪɒʃ/) is the United States federal agency responsible for conducting research and making recommendations for the prevention of work-related injury and illness." They took several months to look - reenact and piece together a Firefighter death so that others may learn and not repeat the same mistake. This is their job - pretty much their only job.

    And you would like to second guess their outcome? Based on what? Only asking...
    :popcorn:
     
    Hoyden, tridacna and JackD342 like this.

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