Am I assuming correctly that we’re looking at a big succ-situation, where the diver will big forced through the tube no matter what?
Anon's in trouble
Submitted 4 months ago by Early_To_Risa@sh.itjust.works to greentext@sh.itjust.works
https://sh.itjust.works/pictrs/image/ce0b54b8-cf72-4564-b1fd-590fbf3b1bfa.jpeg
Comments
GissaMittJobb@lemmy.ml 4 months ago
starman2112@sh.itjust.works 4 months ago
It’s a difference of like 10 psi over an area of what looks like maybe 30 square inches, which would be uncomfortable to get caught in, but I don’t think you’re getting Buford Dolphined
yetiftw@lemmy.world 4 months ago
210 lbs will certainly keep you stuck there though
GissaMittJobb@lemmy.ml 4 months ago
Ahhh yeah that’s where I’ve heard it before, WTYP had an episode on that!
where_am_i@sh.itjust.works 4 months ago
from a different reply I understood the meaning of the last two words: en.m.wikipedia.org/wiki/Byford_Dolphin
BleatingZombie@lemmy.world 4 months ago
If you were on your back and had your legs above the hole, is 7 psi strong enough that you wouldn’t be able to fight it?
I guess another question would be “how strong would it be compared to gravity?” (if anybody has any idea)
unexposedhazard@discuss.tchncs.de 4 months ago
Is 5m enough for that? I feel like no, but i have no idea.
Maggoty@lemmy.world 4 months ago
Yup.
Gork@lemm.ee 4 months ago
This unfortunately happened in real life.
starman2112@sh.itjust.works 4 months ago
For more clarification, they were on the high pressure air side. The kind of dives they were doing involved long periods of acclimation to the different pressures involved, so the diving bell was pressurized to 9 atmospheres. Someone fucked up, and the door opened. 9 atmospheres turned into 1 atmosphere very quickly, and the only good thing is that it happened so fast that the deceased wouldn’t have even noticed
adj16@lemmy.world 4 months ago
Just for what it’s worth, it looks like it was actually an equipment malfunction, not someone fucking up, that caused the accident. The company claimed the person fucked it in an attempt to cover their asses, and they were eventually found to be hiding the truth in a court of law.
JokeDeity@lemm.ee 4 months ago
No one fucked up, they finally settled on it being a mechanical failure.
AI_toothbrush@lemmy.zip 4 months ago
Some parts of that article are straight horror.
sukhmel@programming.dev 4 months ago
The families of the divers eventually received compensation for the damages from the Norwegian government, 26 years after the incident.
Well, it’s good that some justice was finally achieved, but that is depressing level of covering up (as usual)
fonji@sopuli.xyz 4 months ago
But where’s Saddam?
over_clox@lemmy.world 4 months ago
I don’t see the problem.
I mean, I don’t swim, but the dynamics seem to make sense.
What am I missing?
deegeese@sopuli.xyz 4 months ago
finitebanjo@lemmy.world 4 months ago
I just remembered that meme “SpongeBob Experiences Delta-P and Dies Instantly”
Although I’m having a Mandela Effect moment where I swear I saw a version where Patrick talked a lot longer with much more technical information.
PhilipTheBucket@ponder.cat 4 months ago
www.youtube.com/watch?v=PXgKxWlTt8A
Like that, but with people.
over_clox@lemmy.world 4 months ago
Ouch!
And just to think, we’re all gradually evolving into crabs…
LemoineFairclough@sh.itjust.works 4 months ago
Arbiter@lemmy.world 4 months ago
When it’s got ya, it’s got ya.
emerald@lemmy.blahaj.zone 4 months ago
This really Byfords my Dolphin
grandma@sh.itjust.works 4 months ago
DELTA P 🗣️🗣️
spiritsong@lemmy.world 4 months ago
Wouldn’t this human in theory become a crumpled sausage like what happened to the crab by the leaking underwater pipe?
TwoBeeSan@lemmy.world 4 months ago
There was a story of maintenence divers that it happened to. Horrifc.
Will see if can find story.
zeezee@slrpnk.net 4 months 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 4 months 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…
starman2112@sh.itjust.works 4 months 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 4 months 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.
I’d say this person is going to have a bad time with five metric tons pushing them towards that little hole.
spiritsong@lemmy.world 4 months 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.
SynopsisTantilize@lemm.ee 4 months ago
Reference: www.youtube.com/watch?v=_-INIu_VK08
gandalf_der_12te@discuss.tchncs.de 4 months ago
anon’s in trouble because they’re using psi instead of bar.
TheBrideWoreCrimson@sopuli.xyz 4 months ago
Pascal FTW.
UltraGiGaGigantic@lemmy.ml 4 months ago
He is so dreamy
BuboScandiacus@mander.xyz 4 months ago
Wtf is a psi
Zacryon@feddit.org 4 months ago
Muricas version of pressure.
spookedintownsville@lemmy.world 4 months ago
Freedom units
teije9@lemmy.blahaj.zone 4 months ago
pounds per square inch. the us version of bar or n/m²
Jimmycrackcrack@lemmy.ml 4 months ago
Why is your comment highlighted blue in Lemmy Connect?
Nomecks@lemmy.ca 4 months ago
It’s what you need to power your Protoss army
niktemadur@lemmy.world 4 months ago
It’s the Imperial Gangnam Style unit
cows_are_underrated@feddit.org 4 months ago
100.000 PSI is equal to 1 bar(if I remember correctly)
9point6@lemmy.world 4 months ago
Unfortunately no, 1 bar (1 atmosphere) is 100,000 pascal
PSI is pounds per square inch and is roughly 14.5 PSI to 1 bar, and to me, way less intuitive than bar
teije9@lemmy.blahaj.zone 4 months ago
no, not at all. bar is a logical metric unit, psi is imperial. because the us doesn’t know what powers of 10 are, there’s never a nice conversion factor.
BuboScandiacus@mander.xyz 4 months ago
That’s metric
Jolteon@lemmy.zip 4 months ago
I’m unfamiliar with fluid dynamics. How intense would the Delta p problem be in this situation?
Gladaed@feddit.org 4 months ago
Soup like homogenate
baldingpudenda@lemmy.world 4 months ago
Investigation 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 (24 in) 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, and of the thoracic spine. These were projected some distance from the bell, with one section being found 10 metres (30 ft) vertically above the exterior pressure door.
Soup indeed.
ryannathans@aussie.zone 4 months ago
I feel like a delta of less than 10 psi doesn’t sound so bad
vithigar@lemmy.ca 4 months ago
It depends on the size of the opening. If it’s small that’s no problem. You could block a 1 inch pipe at 10psi with your bare hand and be largely fine. It’s a little less than 10 pounds of force assuming a round opening.
The problem is that the total force scales geometrically with the size of the opening. Make it two feet wide at the same 10psi and now you’ve got about 4500 pounds of force trying to push you though that opening should you find yourself in the unfortunate situation that it’s been completely blocked by your body.
GBU_28@lemm.ee 4 months ago
Big succ P
ShinkanTrain@lemmy.ml 4 months ago
Do NOT put your dick or butthole there
Iheartcheese@lemmy.world 4 months ago
Hikermick@lemmy.world 4 months ago
Passerby6497@lemmy.world 4 months ago
Big ‘Guts’ vibes here
Akasazh@feddit.nl 4 months ago
Well if you have both, and disregard this warning, it will be hard to separate the two
oysterenjoyer@sh.itjust.works 4 months ago
Top 10 ∆P incidents
spiritsong@lemmy.world 4 months ago
Yeah I read about it. Definitely not the nicest way to go.
nthavoc@lemmy.today 4 months ago
Safety video for anyone with an interest: www.youtube.com/watch?v=AEtbFm_CjE0 Delta P is stuff of nightmares.
tacosanonymous@lemm.ee 4 months ago
Danger Zone!
SalaciousBCrumb@lemy.lol 4 months ago
Is this like the end of that Aliens movie?
mindbleach@sh.itjust.works 4 months ago
Chunky marinara factory.
starman2112@sh.itjust.works 4 months ago
Only the Byford Dolphin ruduces an entire diver to a soup-like homogenate in 30 seconds
populustree@lemmy.blahaj.zone 4 months ago
is it just me or does this look like the cover of You Would Rather an Astronaut?
BananaTrifleViolin@lemmy.world 4 months ago
The biggest problem is he’s engineering in Imperial instead of SI units.
r_thndr@lemmy.dbzer0.com 4 months ago
I thought the same way, then became an American engineer. Fuck a horsepower, because it’s so goddamned context dependent.