Back in the 70's and early 80's we used to bell bounce in S.E.Asia before it was made illegal. Down to depth at ambient pressure and then primary and secondary RAPID blow-downs. Needed to drink cold liquid otherwise burnt lungs. Possible helium shakes and then a dash from blow-down to work for minutes and then seal to return. Hopeless and dangerous.
Worked on Glomar Grand Isle for Ocean Systems in 73. Bounce dive 630ft in North Sea no hot water suits. Did trials breathing neon as they reckon helium was too expensive
@@nrw34260 That was three years before I worked in the North Sea. In '77 for Sub Sea off the Shetlands just two hours after getting on the rig and my first ever sight of a bell, on a observation dive to 430ft and then a 80ft lockout just to see if I would leave the bell...lol. At least we both survived. I'm 68 now and live on a funky beach in Canada. Wishing you good times mate.
As soon as the water pressure and mixed gas in the dive bell equalize , the divers can exit the dive Bell. The Saturation system and the dive Bell are at the same internal pressure. The divers only decompress at the end of time to leave the Saturation dive system. On big long term jobs this can be an on going prosses , changing driver's out every couple of weeks .
Yes. Because the pressure is at those depths are many many times greater than the atmosphere just walking around on the surface they have to adjust your body to that kind of pressure and they use typically a low percentage of oxygen with a high percentage of helium and they increase the pressure in these chambers. Once the pressure in the chamber is equal to what it would be down under the water where you're going to be working.. you use what's called the diving bell to get down there and back up to the chamber. You have to maintain that pressure the entire time and it usually takes several days to get your body back to normal. If you suddenly decompress.. you will just pretty much explode quite literally. There are some absolute horror stories involved with this kind of work. Fuck that. I hear the money is real good but they can keep it.
Please explain what is the procedure, if any , when several days decompression are needed for REALLY DEEP DIVES, this system does not appear to work unless you add SEVERAL COMPRESSION-DECOMPRESSION Chambers. Another Question, I you are to have, which apparently you are not, if 3 men would be down actually hands-on working, then who handles the umbilical lines?
All that money making the bell. The winch. The air supply down there. Surely as they are slow lifting heavy things etc when down there, plus decompression time, it’s logical to have robotic arms which are controlled by men on the surface. No decompression. Faster. Better all round.
@@glaucus7609 I’m into cnc and robot arm has tolerance of .01 of a millimetre. You are surely not telling me human arm is more accurate. Nope men will be replaced soon enough
Curiousity Rover flew to Mars. Went down to surface. Drove out and spent time driving around taking pics and samples. Rubbish to your thoughts robots could not weld the pipeline.
@@jamesbarratt593 And it took the rover months or even years... Men on the moon were able to do much more in a few hours... And also I am pretty sure if it was possible for to do the work they would already be implemented... Why would they keep using humans otherwise?
I think I understand now
രാമേട്ടൻ പറഞ്ഞത് കേട്ടശേഷം വന്നതാണ്. PG Ramnath
Very dangerous job.
Great video
Back in the 70's and early 80's we used to bell bounce in S.E.Asia before it was made illegal. Down to depth at ambient pressure and then primary and secondary RAPID blow-downs. Needed to drink cold liquid otherwise burnt lungs. Possible helium shakes and then a dash from blow-down to work for minutes and then seal to return. Hopeless and dangerous.
Worked on Glomar Grand Isle for Ocean Systems in 73. Bounce dive 630ft in North Sea no hot water suits. Did trials breathing neon as they reckon helium was too expensive
@@nrw34260 That was three years before I worked in the North Sea. In '77 for Sub Sea off the Shetlands just two hours after getting on the rig and my first ever sight of a bell, on a observation dive to 430ft and then a 80ft lockout just to see if I would leave the bell...lol. At least we both survived. I'm 68 now and live on a funky beach in Canada. Wishing you good times mate.
How much for 3 of those and 1 smaller for a sailboat?
where is the HRC??? what do you do in the event divers are in deco and you have to abandon ship?
What is HRC ?
@@tundrasheep hyperbaric recovery chamber. its the only way the divers live if the ship sinks. all systems must have them.
Thanks for the explaination :)
They are dead
There is no pressurized step before diver go through to dive bell. They are dead.
Better with sound ?
what was the bottom time? Is it like a submersible decompression tank, creating it's own atmosphere?
As soon as the water pressure and mixed gas in the dive bell equalize , the divers can exit the dive Bell. The Saturation system and the dive Bell are at the same internal pressure. The divers only decompress at the end of time to leave the Saturation dive system. On big long term jobs this can be an on going prosses , changing driver's out every couple of weeks .
Yes. Because the pressure is at those depths are many many times greater than the atmosphere just walking around on the surface they have to adjust your body to that kind of pressure and they use typically a low percentage of oxygen with a high percentage of helium and they increase the pressure in these chambers. Once the pressure in the chamber is equal to what it would be down under the water where you're going to be working.. you use what's called the diving bell to get down there and back up to the chamber. You have to maintain that pressure the entire time and it usually takes several days to get your body back to normal. If you suddenly decompress.. you will just pretty much explode quite literally.
There are some absolute horror stories involved with this kind of work. Fuck that. I hear the money is real good but they can keep it.
Anyone who has Netflix go and watch last breath it’s about a diving bell accident
On an actual DSV, this is some failed dream using a modular system.
amazing
Why is there no sound?
because they did not want to mess up with music.
Dream on, a modular system and no DP? Hard sell.
DP?
@@PressurePlayerStudio Dynamic Positioning System - DP2-3 is levels of system redundancy
Last video i saw was about the Byford Dolphin accident ....
This video is different from that. This is Bell bounce diving.
We’re to buy?
Please explain what is the procedure, if any , when several days decompression are needed for REALLY DEEP DIVES, this system does not appear to work unless you add SEVERAL COMPRESSION-DECOMPRESSION Chambers. Another Question, I you are to have, which apparently you are not, if 3 men would be down actually hands-on working, then who handles the umbilical lines?
It's not for deep saturation dives, and the third man remains in the bell as bellman
CapitanPR u have tanks on the side of the bell .
Yes. Bell man stay in bell to handles the umbilical lines and anything
@@downlink5877 This animation doesn't include the activities while divers wait
All that money making the bell. The winch. The air supply down there. Surely as they are slow lifting heavy things etc when down there, plus decompression time, it’s logical to have robotic arms which are controlled by men on the surface. No decompression. Faster. Better all round.
Robotic arms now are not very precise unfortunately,hard to beat human hands,maybe in 10-20 years it will be possible
@@glaucus7609 I’m into cnc and robot arm has tolerance of .01 of a millimetre. You are surely not telling me human arm is more accurate. Nope men will be replaced soon enough
@@jamesbarratt593 legit they tried doing an oil pipeline repair and the robots couldnt do it
Curiousity Rover flew to Mars. Went down to surface. Drove out and spent time driving around taking pics and samples.
Rubbish to your thoughts robots could not weld the pipeline.
@@jamesbarratt593 And it took the rover months or even years... Men on the moon were able to do much more in a few hours... And also I am pretty sure if it was possible for to do the work they would already be implemented... Why would they keep using humans otherwise?
Dini didn't asked good condition to dive... Since god his hand is already good... He told that the problem it was the waves!!!!
Why are there no African Americans or women in the animation,
Cuz they can’t swim
Nice one
who farted?
This animation doesn't include the activities while divers wait it would be cool if it did
Wth
Can see this getting blown washed off the deck in typhoon sides
Great video