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- เผยแพร่เมื่อ 19 พ.ค. 2014
- A lost bell incident is fortunately a rare occurrence, but one which is life-threatening for the divers concerned.
Previous experience tells us that the divers' chances of survival will be enhanced if the divers and their support crews know how to make effective use of the emergency survival equipment provided in each diving bell. This requires training so that divers are familiar with the equipment and support crews recognise their role in deploying and maintaining an effective survival system.
IMCA and the UK Health & Safety Executive (HSE) have therefore produced this video and accompanying trainers' guide. Together, they are designed to supplement in-house training for dive teams, diving supervisors, life support technicians, maintenance personnel and trainees in the use of survival equipment provided in a diving bell or welding habitat.
Each diving contractor may have company-specific emergency procedures and equipment which are unique to that company or diving operation. Contractors will want to take account of these specific requirements when designing their in-house training programme. This video and guide, however, will assist by highlighting the basic procedures to be followed by divers involved in a lost bell incident. - วิทยาศาสตร์และเทคโนโลยี
The "suit" also doubles as a body bag so they can get your corpse out easier.
Sounds like that might be true.
It also prevents your fluid from oozing out :)
don't do us like that
Imagine being inside that pitch black, ice cold diving bell,knowing it will be your inescapable tomb. it would be terrifying
@Paleis Heuwel what’s delta p?
Although it may sound morbid, dying from hypothermia is actually preceded by a period of mental disconnect and then falling asleep.
This video is excellent in stressing the importance of training prior to any potential unfortunate incident.
@Paleis Heuwel anything is better than explosive decompression....
I will not imagine that. I get itchy just watching people do it
@@jarenjay9667 search for delta p crab on TH-cam
The only actual incident where both tether and umbilical snapped that I heard of, the bell sunk over a metre into the mud in the seabed. As a result, the hatch couldn't be used and all three divers died of asphyxiation while the rescue divers watched helpless through the window port. Saturation diving is extremely dangerous
Not a very nice thought at all, horrendous.
Not possible to attach a cable to the top of the bell and hoist it up? ahh man. the thought of that is terrifying.
Honestly I would rather quickly rise to the surface in the hopes of IMMEDIATELY getting into a decompression chamber.
@@gnnascarfan2410 definitely die if you do that.
@@gnnascarfan2410 if your brain can proces you got up you are already ripped apart
Flight safety demonstration : i am important.
Diving Bell : awww. How cute.
That suit looks so cozy ... But I'd never want to be in the situation that requires the use of one!
Welllllll, that’s terrifying.
The music is not helpful on that front
IF someone had no idea what saturation diving was... you could probably convince them this was an elaborate scene from a sci fi movie...
That would be hilarious
I don't know how I got here but thank you for this video. 👍 This was extremely scary.
This has to be one of the scariest things imaginable . This would be my worst nightmare, no amount of money is worth this job…
This leaves you with quite a cliffhanger!
I watch this twice a year. It's well made and mabey unintentionally horrific.
Gets me off
Classic @@batman1902
I know how to survive in a diving bell 400ft under the ocean with little to no oxygen thanks to this video.Oh I forgot I don't ever dive.
That's step one.
@@dsandoval9396 😂
This is really good advice for just avoiding regular old hypothermia here on land. Spending more time in the woods and on the water than I ever did in school... I've run into many instances where hypothermia was a real threat for me or someone else I was with. Insulating yourself from the ground, drying off any sweat, or moisture, all of those things are absolutely wonderful advice that I don't think I've ever heard or seen in other hypothermia survival suggestions or guides. It really can be the difference in life or death something as simple as insulating your body from any large surface that can drain heat from it. Obviously it's not as big of a risk and situation if you're on land or in a boat or whatever... But still a few different percentage points one way or the other can make the difference. Any suggestions in this video would work in all hypothermia threat s
What a great foresight
Who is the voiceover ? It sounds very much like the old cold ware era "protect and survive" public information movie.
Their voices would be way way higher than that, they are breathing a mix of helium and oxygen.
Daniel Pierce you do know this is a staged survival turorial ?
It literally says it's a simulation at the beginning. lol
@@maovslandlords9244 yeah but at certain depths you would want another gas mixture, because at a certain depth oxygen becomes toxic, so you would need another gas to offset the poisoning you would get. Also the oxygen we breathe above surface is a mixture of other gases anyways mostly nitrogen. So if you were diving really deep you’d probably want a trimix(oxygen,helium,nitrogen) and be hooked up to a rebreather. Otherwise you could use a mixture of nitrox(nitrogen and oxygen), but trimix is the best mixture if you’re diving deep and need to be in the water at a certain depth for hours.
@@williamnealy827 I'm aware of that.
@@ORIGINOLINDIVIDUALReally? Thought it was real!
If i was in that situation one of the biggest hazards would be the stench in the bell after I shat my pants when the lift line broke.
Good Info, Thanks
"Try to stay relaxed" 👀I can't really imagine a situation in which I would be less relaxed. How the heck do you go about rescuing the lost bell? does every sat dive ship have back up?
Looks beyond terrifying & maybe why this is one of the highest paid professions out there. I did some work a few years back for a sat diver - nice young guy, incredible pad, cars & lifestyle. Worked 4 months on 4 off in the Gulf for clearly very serious money.
I know, but I think these guys are just a different breed. Divers, in general, are typically pretty calm minded because they know that if they panic, they die. They just get used to that mentality, but these guys maybe just train out the wahzoo until it’s all muscle memory and the scenarios, while terrifying, become familiar by practice? Idk, that’s what the military does, anyway.. either way, I hope this never happens to anyone! God bless, and happiest New Year!
Not that great money - it’s about $175k -200k max per year...
Its only very few divers that make that kind of money, the top guys who are unionised and working for the top companies. Many dont make much more than 150-200 quid a day, and that's for an 8 hour dive. By that i mean you're 8 hours non-stop in the water, but you dont always get paid for all the set up and break down at the beginning and end of your shit. The work isn't secure either, you might get a couple of weeks work, then not know when your next job will be.
Every bell in which I dived had heavy ballast weights which could be released from inside the bell so it would shoot to the surface.
Obviously, the inner hatch would be secured.
Only one time that I know that a 'floating bell' was almost used was when my dive supervisor was doing surface D on a sat dive and a blowout occurred on the offshore rig.
As topside crew was going crazy getting ready to abandon ship, my supervisors supervisor had him and tender leave DDC, go into bell and prepare to go overboard, drop ballast, have disconnected cable/umbilical, and be ready to be towed away by Zapata boat.
Never happened as blowout was brought under control.
@@Coffeeguyzz Very cool answer, thank you.
That survival bag is literally me as a 4 year old trying to move in my giant snowsuit
Hahaha...
😆
It was figuratively you.
@@lutello3012 yes!
@@lutello3012 Too bad there's not a high paying career for spelling and grammar proofreaders here. We'd always have work! This "literally" thing is one of my biggest pet peeves- people use the word without even knowing what it means.
Good video
I dont see that it would be a death sentence, as long as the ship is equipped with a dual bell system, which should be mandatory in my opinion and I think a good few ships these days have another bell on board....attach two lifting cables to the rescue bell and lower them down with two of the other drivers already at depth pressure , I would figure they would be back to the surface withing 6 hours
With good weather condition. But what about rogue seas and very big wawes? Is it possible to stayng the perfect position till the rescue operation?
@@blasterml well if the sea was extremely rough no divers would go down so there would be no need to rescue anyone and if there is a bell in the water during rough sea , no reason another cant be sent down , the ships have winches that make shure the bell stays relatively level .
Have you ever seen that one commercial diver case where the ship's autostabilization failed and started to drift and it caused the bell to start dragging and the one guy didnt make it over the rig they were working on and his umbilical snapped? I feel like thats one of the situations where even in calm seas, you can be kind of screwed. He survived through a miracle and basically being cooled so well he didnt suffer any ill-health effects. But I'm sure theres a similar scenario, albeit a very VERY unlikely Murphy's Law situation where this happened AND they lost the winch cable. Then the rescue effort would be kaput, unless they were also able to turn off the ship and turn it on again to reset the stabilization
both horrific, terrying, claustrophobic... but that "thumbs-up" very reassuring
Be sure to play the doom music, on the included sound system. It should be motivating.
Good music.
well (un)fortunatly one cannot have mind mad as a hatter and go diving as a job.... so I am stuck watching you guys handling it. I must say it looks awesome in the words true meaning, the whole abyss just staring back at you and all you can see is what your cone of light and silt allows :b
Perfect horror music score.
Agreed 👍
Horrific scenario, I used to put the survival packs together n u definitely wanted them back unused.
Thank you for your service!
My contract said they’d have an extra back up bell. Tf is this
Where’s the companion video showing the rescue?
There isn't one...
Look up the documentary 'Last Breath'
Did anyone else notice their voices were not squeaky because of heliox
Yeah it's a simulation/training done at the surface to eliminate risk. I noticed it as soon as the diver climbed into the bell dry :)
The procedure would be the same at depth tho, you don't actually feel the pressure so no point in unnecessary risk for training.
I suppose they could have adjusted the pitch in post-production?
@@rupert274 no you would be able to tell, it alters the waveforms of the sound of your voice it doesn't just pitch it up.
I don't know if speed should be emphasized as much as being deliberate with your actions. Last thing you'd want to do is have to get out of that bag.
So scary but so sool. Imagine 300M in that in the dark for a few hours.
Is it a thermodynamic problem? If the temp at the sea bed is -5 degrees C hypothermia, given that there is zero wind is fine with a jumper, parka, thick socks and a decent wee bonnet. What is going on here? Super rapid heat transfer due to the steel capsule? Confused. Edit, solved by watching the whole clip haha.
Alot of SAT dives are in the North Sea which means freezing cold water and pitch black depths thats where this video is taken place. All that immense pressure of extremely cold water around that bell making the steel hull ice cold therefore transferring into the bell interior. Let alone one or two divers being already wet from their dive.
I think it has to do with the air they are breathing, they use diving bells for really deep diving and when that happens divers must use trimix to work, I recall that having nitrogen in their blood they get a lot colder.
They would be breathing heliox and helium has a heat transfer rating of 6 x more than nitrogen - so they and the bell will lose heat very quickly
Do I get a certificate now ?
Idk if I would want to throw my diving gear out of the bell lol. What if you need it to like transfer to another bell or something? It doesnt seem like a good idea
Exactly. I'm curious how cold the bell with get and how fast
@@kevinmarshall3198 It would get very cold. It would be right around freezing. The deep water is very cold, right around 32 degrees F. Maybe a little more, or even a bit less
@@VashStarwind thats all? i thought it would be like -30f.
@@frigglebiscuit7484 Water is weird, it can only get so cold other wise it freezes (32 dg F). But when there is salt in the water, it lowers the freezing point of the water, making the temp able to go lower than freezing, but I dont think it gets too much lower than freezing, pretty sure it would be slightly lower than freezing. (around 30dgF, maybe slightly less) I dont think it goes anywhere in the negatives other wise the water would start turning to ice
Water freezes at 32F/0C at 1 ATM...so it in theory would freeze at higher temperature under pressure.
i presume this is for the heliox atmo, but they certainly sound as in an nitrogen atmo
He did mention that this was only a simulation.
It’s a reenactment
So as long as you don’t touch the bell it won’t take away the heat. Or someem like that?
The bell walls are steel, and conduct heat very efficiently. Heat energy, wants to be distributed evenly in a system.
Think of the bell, the water around it, and the two humans as a system.
So you're trying to minimize the amount of heat that flows from your body to the bell and the surrounding water.
@@banalMinuta also heliox transfers heat 6 times greater than nitrox (air) mixes.
Search mr ballen Thursday and friday 2-3/4-2021 is the lost bell episode probably 3rd strange dark mysterious story.
Very strange to hear Roger Allam narrating something other than a kid's programme.
No no and hell no, not as claustrophobic as i am no way brother, have always been terrified of diving bells, went on one when i was a kid and won't EVER do that again.
Hey, can't they go the nuclear option? The martian like, to generate heat?
It will be difficult to play hide and seek in that
Saturating diving is the most dangerous work in the world
Apparently, non survival of one of these incidents is known as a « bell end ».
Yep.. that's nightmare material right there.
Does anybody know of any documented lost bell incidents I can read about??
Wildrake - Infabco
yeah its book name is into the lions mouth i thi nk of the wildrake inciddent. never knew uncle john that cal dive owned was part of that story
Yes, look up the Byford Dolphin incident. Someone mistakenly opened up the bell while it was still still under immense pressure. Within a microsecond the bell went from something like 9 atmospheres to 1. The men inside underwent explosive decompression (think shaking up a soda bottle and then opening it x200 except inside the human body), the men inside actually exploded.
Nasty, nasty shit.
Correction, didn't read "lost bell" in your question, obviously the Byford Dolphin wasn't a lost bell, but a Bell incident nontheless.
indy mutt, it would be so quick you wouldnt even feel it
Then turn off all lights and pray lol..
Why would you lol at that?
@@joshua_J lol
lol
How cold does it get?
From what I'm reading very nearly freezing. I assume the electrical umbilical carries power for heaters.
Or the gas supplied is whatever temp the air compressors are pumping in.
Your not breathing air in sat. Helium/Oxygen mix.
Salt water has a higher freezing point ,so it can go below 0 degree Celsius down there. The steel Bell is an excellent conductor of heat ,so you'd like to cover yourself with an insulating material to prevent hypothermia.
Gente o que ouve
Why not dump the weights and float to the surface
So did they survive and get rescued or not?
This was just a re-enactment
I reeeeally hope you're joking
Uhhhhhhhhhhh
no nicer way to put it but to tell you you're fucked in that situation
How cold does the bell get???
As cold as nine hundred and something feet at the bottom of the ocean is. And like he said, it’s also largely about what they are breathing.
The water temp at that depth is 4 degrees C, or 39 degrees F. You’ve probably found that out by now, though. 🙃
Although the bell - particularly the shell - can get very cold very quickly, it is the distortion of breathing heliox that greatly accelerates the danger.
From memory... body heat transfers about 8 times faster when wet compared to dry.
It transfers 35 times faster if breathing high heliox mix.
Mental functioning deteriorates within a minute or two.
They look like “Among Us”!
any food
5:09
Not that rare in the late 1970s in the North Sea when I started out as an Offshore Oil Field Diver
Go watch 'Last Breath' on Netflix. You'll thank me later.
I was so close to going into this industry. I was ready to sign the papers, but at the last second decided not to.
About to watch it now. Thank you for the recommendation.
Watched that last year, brilliant film
Thats a waste of 25k
@@paraphenaliac4657 I shadowed a diving crew in Salt Lake City for a few hours after touring the diving campus up in Seattle, they were all about my age (35 at the time) and been diving for almost 10 years. Once the boss walked away they all told me not to do it. Some of the best advice I ever listened to.
I feel like this stuck in the lift (elevator), haaaa...
They should have cyanide tabs in those bells.
Cyanide is painful id rather vent oxygen and get hypoxia its less painful
The undertaker music 😮
Don't forgot a towel
hoopy frood
5:23 "There are some sanitary bags to store as well..."
Translation: If you need to piss or shit yourself in this suit, use this.
I know it's not supposed to, but parts of this are just a little funny.
5:10
6:56
Gummylox r
Would of been easier to fit a heater in the Bell.
There's no power when the umbilical is severed lol I think they know what they are doing.
It's why they went with a chemical reaction based on exhaled CO2 rather than something that relies on batteries
I love responses from people that know nothing about what they are talking about.
can someone explain 👺
The amount of oxygen used up by being fast and quickly moving around and getting out of breath is enormous. I mean I know it's important to do it quickly but it just seems like you would use up someone's oxygen that way
my teacher worked on a rig as an underwater welder. his third day on board they pulled up the bell opened it up and hosed what was left of a diver out of the bell. he told me in the 6 months he saw this happen 8 times and 4 people with death by bends.
fish bord that's why I don't want to work on a offshore rig as a diver the risk of explosive decompression inside of the decompression chamber
He saw 8 people get hosed out from a dive bell but only 4 died?
8 died from explosive decompression and 4 died from decompression sickness ("the bends").
I was drinking last night.. I see now that he meant 8 + 4. And that is terrible.
yeah. I was told similar stories while I was prepping for a mixed gas dive to 200 ft. that's all I thought about on the way down. lol
6:58 among us
bruh
In real life they sound like chip munks
6:57 amongus
Guys, blue sus.
There is no f****** way that on the bottom of the f****** ocean it's f****** Antarctic temperatures for every single party in that f****** diving bell
I would want a firearm with at least one round in any of these trapped underwater scenarios. I'll be the decider of my fate.
Most often they die faster thrn a bullet would kill them lol
Well a bullet will reduce the breathable air and leave your diving partner with a dead body next to them.
Firearms are illegal. The implosion will kill you faster than any bullet, but your body will be less recognisable to your loved ones.
Seriously! hypERthermia is when your TOO HOT. If your talking about being too cold, that word is hypOthermia.
Nope.
Just my luck, I'd need a poo 💩
I wouldn't go down there without my own bottle of and a ziplock bag. If worse comes to worse you can try that bad boy around your head and drift off to sleep like a king. And if your buddies are real cool then maybe they'll do away with the tank and hide everything so that your family can still get life insurance payout. But I always swore that when it finally comes to that for me... In the next year or two... I would involve anyone just because I don't think it's right even if someone would want to be there for you and all that. Just not worth implicating someone. Pretty bad when we're allowed to euthanize r pets and give them a peaceful death once they're suffering becomes too much but humans don't even get that option
Are you planning on it happening in a year or two? Do you really think that's a good idea?
@@Lydianon no way I could wait that long. 😁
Why cant the bell just rise to the surface if something went wrong lol. When you haven't changed your primitive way of doing things and just use modern equipment doesn't change the fact that it's primitive.. imagine humans still doing things that technology can do without risk... primitive. But they get paid lots people say lmao.
A ocean can be 6.6 miles deep there not saving your ass your toast
Nobody is bell diving in 6.6 miles anyways.... moot comment.