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[–] 122 points 6 months ago* (last edited 6 months ago) (1 child)

i remember a greentext about this, and a wiki article, but where is it again? I thought it was the Norwegian oil platform disaster but no

there was some talk about how they got discombobulated and their bodies had gross dismemberment or something, being entirely suctioned through

edit: aha, found the article!

the causes:

  • employees were overworked
  • bad audio and noise caused miscommunication
  • entry/exit door was unsafely designed

Colourful NSFW description aheadInvestigation by forensic pathologists determined that Hellevik, being exposed to the highest pressure gradient and in the process of moving to secure the inner door, was forced through the crescent-shaped opening measuring 60 centimetres long created by the jammed interior trunk door. With the escaping air and pressure, gross dismemberment ensued; it included bisection of his thoracoabdominal cavity, which resulted in fragmentation of his body, followed by expulsion of all of the internal organs of his chest and abdomen, except the trachea and a section of small intestine. These were projected some distance from the bell, with one section being found 10 metres vertically above the exterior pressure door.

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  • [–] 82 points 6 months ago (12 children)

    Delta P doesn't care. Delta P doesn't give a shit.

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  • [–] 0 points 6 months ago (10 children)

    I hate "delta p" so much, as in the term. I'm convinced divers just used it so they could sound even more elitist and like astronauts when they're just dudes with a few grand and nothing better to do. Erm, akshualy that isn't a vacuum, that's a device that's creates delta p. P stands for pressure and delta is a scientific notation for change. Cool dude, now finish delta p-ing your fucking room.

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  • [–] 33 points 6 months ago (2 children)

    I'm convinced divers just used it so they could sound even more elitist and like astronauts when they're just dudes with a few grand and nothing better to do.

    Hey.... Some of us just like blowing bubbles and hanging out with fish.

    It is pretty fun, but to be honest not worth the money if you have to pay for the training yourself, especially if you don't live near a good diving spot.

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  • [–] 5 points 6 months ago (1 child)

    It is pretty fun, but to be honest not worth the money if you have to pay for the training yourself, especially if you don’t live near a good diving spot.

    yeah, this is very true. I'd love diving tropical stuff every day but don't want to live where it's warm lol; where I live there are some crazy folks who drysuit dive all the time, but even then it's waaaay too cold for me. I want the water warm but the rest nice and cool lol

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  • [–] 17 points 6 months ago (4 children)

    Static pressure on it's own doesn't really "do" anything though. You could have the thinest piece of solid material with 10 million atmospheres on either side and the material doesn't care since forces cancel out. Difference in pressure is where shit goes pop or crush depending on the direction.

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  • [–] 3 points 6 months ago (1 child)

    This statement is incorrect. Pressure directly affects materials. Its just without pluging the hole with a part of your body you don't actually feel the difference. In static 10 million atmospheres stuff like metal should show some measurable shrinkage. The larger the object, the more shrinkage you will measure.

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  • [–] 40 points 6 months ago* (last edited 6 months ago) (4 children)

    I mean the dolphin story is gruesome. But for this diver to get a severe injury he must be very close to the hole, almost touching it.

    The suction power is not that great in an underwater scenario.

    What made the dolphin so gruesome is that it was an explosive decompression and besides the driver closest to the door no server dismemberment took place, only a very sudden decompression making for a very sudden yet horrid death.

    If the diver in this diagram keeps a couple of centimeters away from the opening he is completely fine but if he manages to cover the outlet hole with some of his anatomy, the shit hits the fan.

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  • [–] 30 points 6 months ago (3 children)

    Sooooo ... Don't put your dick in it, yeah?

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  • [–] 29 points 6 months ago (17 children)

    Is that enough pressure differential to injure you? Get stuck yes but 6.5 PSI doesn't seem that crazy.

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  • [–] 30 points 6 months ago (14 children)

    Actually maybe. Imagine you got your back stuck on a 1 ft diameter pipe. That's 735 lbs pushing on you.

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  • [–] 39 points 6 months ago (13 children)

    Add the in the weight and speed of the water already moving through the pipe and the pressure on the other side becomes hugely negative.

    You're going in that pipe.

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  • [–] 58 points 6 months ago (12 children)

    But I don’t want to go in the pipe

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  • [–] 35 points 6 months ago (5 children)

    You're still getting piped buddy

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  • [–] 12 points 6 months ago (4 children)

    Rip to your homogenate or whatever, but I would simply avoid the pipe 😏

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  • [–] 5 points 6 months ago (3 children)

    I wanted to respond with a funny delta P crab video, but if you search delta P on YouTube now you get a ton of AI generated shit, including a video where a guy sticks his have in a hole and it comes out with 6 fingers.

    They’re all like 2 months old.

    I don’t know why Google did this to themselves.

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  • [–] 19 points 6 months ago*

    My understanding is, this is a very common cause of death among divers. The pressure doesn't kill you, but it gets you stuck long enough that you suffocate. Because even if safety teams are notified immediately, getting you out is difficult enough that they might not be able to get you out in time before you die

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  • [–] 43 points 6 months ago (5 children)
  • [–] 60 points 6 months ago (6 children)

    I’ll never forget this video of a crab being sucked into a pipe being cut or this one of a diver in a similar situation.

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  • [–] 20 points 6 months ago

    Physics is a cruel mistress.

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  • [–] 6 points 6 months ago

    2137 spotted

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  • [–] 6 points 6 months ago*

    When it's got ya... It's got ya!

    Let's watch that video again, it's been a couple of years again

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  • [–] 11 points 6 months ago

    Wait, where's Saddam Hussein?

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  • [–] 4 points 6 months ago

    2137 (and a half)!

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  • [–] 4 points 6 months ago (3 children)

    I don't get it:

    21 psi  ~= 1.4 bar
    15 feet ~= 4.5 m
    

    To reach 1 bar pressure you need ~10m of water no?

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  • [–] 5 points 6 months ago (2 children)

    Depends. They are probably meaning 0.4 bar greater than the pressure at the surface which is approximately 1 bar

    To get one bar more than at the surface you need ten metres

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  • [–] 3 points 6 months ago

    I'm not sure if this is triggering either thalassophobia or submechanophobia but either way thanks I hate it

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  • [–] 3 points 6 months ago (1 child)

    I have no clue what any of this means, yet I laughed.

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  • [–] 2 points 6 months ago (1 child)

    Can someone who feels pain everyday (uses imperial) explain wtf HL/17 is supposed to mean?

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