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Message
re: The CEO of the company with the missing sub refused to hire qualified crew
Posted on 6/21/23 at 9:33 am to GumboPot
Posted on 6/21/23 at 9:33 am to GumboPot
quote:
I know it's the opposite direction compression versus decompression from the Byford Dolphin incident, but it's not the direction of pressure change that necessarily matters here, it's the rate of pressure differential that matters.
You're wrong. Decompression is ugly because the diver has gasses in solution in their bloodstream, and when they go from 132 psi to 14.7 psi those gasses come out of solution and become great big bubbles. That's not an issue when the pressure is reversed.
1
Posted on 6/21/23 at 9:36 am to Sofaking2
quote:
The trip costs $250,000 per person. With that kind of money you’d think they could get a competent rescue crew. The people on there had to sign a liability waiver in case they died on the journey.
Without a tether or a pinger you're not rescuing anybody at 4000 meters unless you get very, very lucky. Like Powerball lucky. This guy built a cheap POS to save money, so the idea that he'd have a rescue vehicle standing by, paying money for it to sit on the deck just in case, wasn't part of his business model.
Posted on 6/21/23 at 9:36 am to Flats
quote:
That's not really true, because your body is mostly water. Instant death to be sure, but our bodies don't deform under uniform hydraulic pressure. If they did divers would look really funny.
This is so dumb I could explain it to you and you still wouldn’t understand. How do you get out of bed in the morning?
Posted on 6/21/23 at 9:38 am to wallowinit
quote:
This is so dumb I could explain it to you
That should prove entertaining. Give it a shot.
Posted on 6/21/23 at 9:38 am to Hobnailboot
quote:
I’m sure this is coming to an airline near you.
And bridges, high rise buildings, surgeries, etc.
This post was edited on 6/21/23 at 9:40 am
Posted on 6/21/23 at 9:39 am to loogaroo
quote:
Jeez. Going woke is now killing people.
Posted on 6/21/23 at 9:40 am to Flats
quote:
Of course it's uniform
The entire purpose of a submarine is to produce an environment suitable for humans to live. Inside the submarine they are approximately under 14.7 psig or atmospheric pressure.
The deepest that saturation divers can live under high pressure is about 1000 feet or ~430 psig. It takes DAYS for saturation divers to decompress after working under these conditions.
This sub is over 13,000 feet deep.
The pressure in the sub is approximately 14.7 psig. This allows humans to move up and down the water column and avoid the issue with decompression. That is the job of the submarine.
Now outside of the sub it feels a pressure over 5,700 psig at depths around 13,000 feet.
If there is a miniscule crack in the sub the implosion is instant and violent.
Posted on 6/21/23 at 9:47 am to Flats
quote:
That's not an issue when the pressure is reversed.
From 14.7 to 132, probably not.
14.7 to 5,700 psi surrounded by air and other metal objects. Yes.
FWIW, water is compressible at these pressures. At 5700 psig water loses 1.82% of it's volume.
Posted on 6/21/23 at 9:51 am to GumboPot
quote:
The entire purpose of a submarine is to produce an environment suitable for humans to live. Inside the submarine they are approximately under 14.7 psig or atmospheric pressure.
The deepest that saturation divers can live under high pressure is about 1000 feet or ~430 psig. It takes DAYS for saturation divers to decompress after working under these conditions.
This sub is over 13,000 feet deep.
The pressure in the sub is approximately 14.7 psig. This allows humans to move up and down the water column and avoid the issue with decompression. That is the job of the submarine.
Now outside of the sub it feels a pressure over 5,700 psig at depths around 13,000 feet.
If there is a miniscule crack in the sub the implosion is instant and violent.
Again, you're telling me things I already know. One of us has designed life support equipment used by divers at 1000 feet, trained the divers during workup exercises on the use of the equipment, and been on hand during those dives for tech support while they're in a topside chamber; is it you?
Now ask yourself why the compression rate for a sat diver (or any deep diver) going to 1000 ft is very, very different than his ascent rate. Hint: because we handle compression a helluva lot better than decompression. They aren't the same.
Posted on 6/21/23 at 9:54 am to blueboy
quote:
And now he has DIED.
Another victim of the LA public school system.
Posted on 6/21/23 at 10:02 am to AggieHank86
quote:
Does anyone have any solid information whatsoever as to why the sub went missing?
Is there any evidence of operator error at this time?
Probably not. Wait until the wreckage is recovered and see the narrative that is spun.
When was the last time we could depend on the Media to give us truth?
Posted on 6/21/23 at 10:03 am to Flats
quote:
Now ask yourself why the compression rate for a sat diver (or any deep diver) going to 1000 ft is very, very different than his ascent rate. Hint: because we handle compression a helluva lot better than decompression. They aren't the same.
I do not disagree.
Let me express my point differently in terms of implosion.
Let's assume the sub contains 2,400 cubic feet of air at atmospheric pressure. For discussion purposes a 2,400 cubic foot sub has dimensions of approximately 10 feet in diameter by 30 feet long.
When the air goes from 14.7 psig in a volume of 2,400 cubic feet the air instantly loses volume to only 6.2 cubic feet (at 5,700 psig).
The implosion will do the damage. The extent at which the body is dismembered, disfigured or crushed is speculation. But I think it is safe to assume it is not a pretty sight.
Posted on 6/21/23 at 10:08 am to GumboPot
quote:
The implosion will do the damage.
If you had a water balloon in a chamber that rapidly went from 14.7 to 6000 psi, nothing would happen to it.
Could they have been crushed by the imploding hull or could a water jet from a small fracture have cut them in half? Sure. The pressure alone wouldn't have done much.
Posted on 6/21/23 at 10:11 am to Flats
OceanGate Expeditions' former director of marine operations was fired in 2018 after he raised safety concerns about Titan. He looks to be around 50-ish.
Posted on 6/21/23 at 10:12 am to GumboPot
quote:
If there is a miniscule crack in the sub the implosion is instant and violent.
That’s even assuming this particular sub was made for such deep dives!!
Was it? I haven’t followed the story at all!!
Posted on 6/21/23 at 10:13 am to anc
Occasionally but not often, folks in power prove they didn't earn their position.
They believe the headlines, but are too foolish to understand their life is at risk by their delusions.
They believe the headlines, but are too foolish to understand their life is at risk by their delusions.
Posted on 6/21/23 at 10:14 am to Bayou Brat
quote:
OceanGate Expeditions' former director of marine operations was fired in 2018 after he raised safety concerns about Titan. He looks to be around 50-ish.
The articles call it a "million dollar" sub. You cannot build something like that for a million bucks. Well, you can, but.....
Posted on 6/21/23 at 10:15 am to Bayou Brat
quote:
OceanGate Expeditions' former director of marine operations was fired in 2018 after he raised safety concerns about Titan. He looks to be around 50-ish.
One interesting thing is that UofW AND NASA are both distancing themselves from OceanGate.
My belief is that the idiot CEO was busy telling lies to investors that "hey, look! NASA and UofW helped us design this vessel" but in actuality, NASA and UofW were mere consultants on the project.
Looking more and more than he skimped on safety which led to this outcome.
Posted on 6/21/23 at 10:22 am to Flats
I'm reading this like your suggestioning that divers dive to depth of miles under the sea level
Posted on 6/21/23 at 10:23 am to idlewatcher
quote:
Looking more and more than he skimped on safety which led to this outcome.
There's no question, because it wasn't approved or certified by any regulatory agency. I get the attitude that the guy had, that we go overboard with safetyism, but it's insane to design and build something like that without some sort of independent party looking over your shoulder. A homemade sub that goes to 30 feet and you've got backup scuba gear, sure. Build it in your garage, go dive it, I don't care. Worst case you drown just yourself. Something that deep with paying customers? Crazy.
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