• Spiritsong@lemmy.world
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    26 days ago

    Wouldn’t this human in theory become a crumpled sausage like what happened to the crab by the leaking underwater pipe?

    • starman2112@sh.itjust.works
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      25 days ago

      Not at 15 feet. I don’t know enough to say how fast the water would be leaving that hole, but it’s maybe a couple hundred pounds of pressure. If he even got caught, it would be super uncomfortable, but he ain’t about to get ∆p’d

      If you wanna see a real crab-in-a-pipe situation, look up that Byford Dolphin everyone’s talking about

      • AnIndefiniteArticle@sh.itjust.works
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        25 days ago

        Let’s convert to metric so we can tell.

        15 ft is about 5 m.

        Water pressure increases by 10,000 pa per meter (rhogh, rho=1000 kg/m^3, g~10m/s^2), so total pressure is 50 kpa, or 1/2 earth atmospheric pressure.

        One side of that hole has ambient pressure of 1 atm. The other side has that plus water pressure totalling 1.5 atm.

        A pressure is just an energy density. Multiply by the cross-sectional area of the interface to get the energy gradient across the interface. An energy gradient is a force. We don’t have a measure of the cross-sectional area of the hole, but if we expect a person to fit through let’s call it 1m^2.

        50 kpa = 50 kJ/m^3, so total force felt across this opening is 50kN which is the equivalent weight of five metric tons.

        Size of the hole absolutely matters. If it’s only the size of a fist (10cm x 10cm) then instead of 5 metric tons it’s only 50 kg of equivalent weight, or about the weight of a person and easily survivable.

      • Spiritsong@lemmy.world
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        25 days ago

        Yeah I read the entire Wikipedia entry on the Byford Dolphin and I almost threw up because how vivid the description is. I think this would be my third time saying this but that’s not a nice way to go (to die) at all.

      • zeezee@slrpnk.net
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        26 days ago

        They also alleged the accident was due to a lack of proper equipment, including clamping mechanisms equipped with interlocking mechanisms (which would be impossible to open while the chamber system was still under pressure), outboard pressure gauges, and a safe communication system, all of which had been held back because of dispensations by the Norwegian Petroleum Directorate.

        Fatigue may also have taken its toll on the crew, who had been working for longer than 12 hours

        Builder of the rig Aker ASA’s Gross Profit was 7.16B

        Norway’s oil and gas tax revenue soars to record $89 bln

        Imagine forcing your workers into more than 12h shifts, running on 30 year old equipment, the government straight up refusing to upgrade said equipment, while making billions in profits - they don’t call it gross profit for no reason…

      • Canonical_Warlock@lemmy.dbzer0.com
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        26 days ago

        Fuck all of this

        Normally when people say this it is at least a bit of an exageration, but not in this case. That is some straight up nightmare fuel.

        Heres a taster for those of you who don’t want to read the whole thing.

        …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…

      • CouncilOfFriends@slrpnk.net
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        25 days ago

        The wildest part to me is someone having the last name Coward. The only way that surname makes sense is if it was changed from something worse like Kiddiddler.