• The dangers of ΔP
    48 replies, posted
[video=youtube;5dDu9wCjyRk]https://www.youtube.com/watch?v=5dDu9wCjyRk[/video] Hey guys I just wanted to post a friendly warning about why jobs like underwater welding are so dangerous.
I don't even like thinking about how terrifying these scenarios are.
That was sufficiently A E S T H E T I C. And damn, the thought of being stuck without any help is just too creepy
at 6:00 wouldn't it be a safe measure to ground yourself around the diameter of the pipe base? or does the suction just not care whether its above or below the hole
I like me a good suck but damn.
Can't they design the holes so you can't easily form a perfect seal over them?
[QUOTE=xamllew;51603653]I like me a good suck but damn.[/QUOTE] Here, read this. [url]http://chuckpalahniuk.net/features/shorts/guts[/url]
[QUOTE=Elstumpo;51603675]Can't they design the holes so you can't easily form a perfect seal over them?[/QUOTE] half of the deaths shown in the video are due to natural causes - such as clogs and debris blocking water from flowing somewhere
[QUOTE=SGTNAPALM;51603688]Here, read this. [url]http://chuckpalahniuk.net/features/shorts/guts[/url][/QUOTE] (Don't read that)
[QUOTE=SGTNAPALM;51603688]Here, read this. [url]http://chuckpalahniuk.net/features/shorts/guts[/url][/QUOTE] jfc, whenever I feel retarded I'll think back on this story
[QUOTE=SGTNAPALM;51603688]Here, read this. [url]http://chuckpalahniuk.net/features/shorts/guts[/url][/QUOTE] [video=youtube;_Oo64qcmpzU]http://www.youtube.com/watch?v=_Oo64qcmpzU[/video]
[QUOTE=Elstumpo;51603675]Can't they design the holes so you can't easily form a perfect seal over them?[/QUOTE] That doesn't stop debris from getting in and clogging things up. You can mitigate that risk, but not eliminate it. For example public pools have multiple drains leading into a singular pipe, or some large grate system. If someone goes near a small drain and blocks it, the water will flow through the other drain, and the pressure difference will be very minor. With the large grate, the water just continues to flow around them. Kind of disgusting so spoilers. [sp]There's been a handful of death's in some older public pools over the years where someone got too close to a drain, had their butt form a seal, and had their internal organs sucked out.[/sp]
Man every single one of those deaths are so chilling.
Jeez that video was like a horrific crash. I was cringing but couldn't look away.
I'm a qualified diver and while I'm not a commerical diver and Delta P isn't really a danger for me, the first thing they teach you when you learn to dive and get your license is how easily you can die and the several dozen ways you can easily die (SWB, bends, diving lunacy etc). They do say drowning is the most horrifying way to die.
The one diving-related accident that has stuck with me over the years is the Byford Dolphin accident. The [url="https://en.wikipedia.org/wiki/Byford_Dolphin"]Wikipedia article[/url] has the details on what happened, but in short, four divers in a decompression chamber were subject to explosive decompression from 9 atm to 1 atm. All died of injuries related to rapid decompression, with one being sucked through a small opening that he was standing next to. He was, using the words of the medical examiners, "completely disintegrated", and his remains were sent for autopsy in 4 plastic bags. The full results of his autopsy are as follows: [quote]The scalp with long, blond hair was present, but the top of the skull and the brain were missing. The base of the skull was a collection of tiny bone fragments only. The soft tissues of the face were found, however, completely separated from the bones. The left upper arm had been separated from the body just below the shoulder joint. The right upper arm was torn to pieces, but still attached to the body. Both hands had been separated from the lower arms. The right thigh, leg, and foot were missing, but the knee joint was found. The left thigh had been separated form the pelvis just blow the hip joint. The pelvis itself had been divided into three part. To one of these parts, a small segment of the small bowel was attached. The penis was present, but invaginated. The soft tissues of the abdomen and the back had been cut straight through at a level about midway between the umbilicus and the pelvis, and thus had been separated from the pelvis. These soft tissues formed an empty sack. From above, one could look down through the larynx. All the thoracic and abdominal organs had been expelled, except the trachea and a fragment of the small bowel. Even the spinal column and most of the ribs had been expelled. The liver had been found somewhere on the deck. It was complete, as if dissected out of the body.[/quote] Later on in the report, the authors noted the following: [quote]The fate of diver 4 clearly demonstrates the tremendous force released in an accident like this. He was undoubtedly mutilated when he was shot out through the small opening left by the jammed chamber door. However, the expulsion of all internal organs from the thoracoabdominal “sack”, including the spinal column and the ribs, suggests that he also must have exploded. Unfortunately, we were not called to the scene. We might then have found more organs from this diver. On the other hand, the locality was such that parts of him may have been blown straight into the sea.[/quote] The other divers didn't fare too great either. All three were found to have large amounts of free fat in the chambers of the heart, as well as the great vessels surrounding it. The fat was mixed with gas bubbles, and "looked like sizzling butter on a frying pan". The authors hypothesised that the boiling of the blood caused lipoproteins to denature and precipitate out as fat. All the organs showed large amounts of gas in the blood vessels, and numerous hemorrhages were found scattered throughout the soft tissues. The one thing you can take comfort in is that they likely all died near-instantaneously.
[QUOTE=Mr._N;51603860][video=youtube;_Oo64qcmpzU]http://www.youtube.com/watch?v=_Oo64qcmpzU[/video][/QUOTE] I know its over the top but what is making me terrified is how unaware the characters are before they get themselves into situations like these. Also starting a pump drain usually takes a little more tinkering then just pulling a switch :v:
[QUOTE=Headhumpy;51605036]The one diving-related accident that has stuck with me over the years is the Byford Dolphin accident. The [url="https://en.wikipedia.org/wiki/Byford_Dolphin"]Wikipedia article[/url] has the details on what happened, but in short, four divers in a decompression chamber were subject to explosive decompression from 9 atm to 1 atm. All died of injuries related to rapid decompression, with one being sucked through a small opening that he was standing next to. He was, using the words of the medical examiners, "completely disintegrated", and his remains were sent for autopsy in 4 plastic bags. The full results of his autopsy are as follows: .[/QUOTE] [quote]The penis was present, but invaginated.[/quote] his dick turned inside out :disgust:
Theres a pic from one of the divers in an autopsy, its obviously pretty NSFW [url]http://www.documentingreality.com/forum/attachments/f237/581590d1415139828-pictures-byford-dolphin-diving-bell-accident-byforddolphindeathpicture.jpg[/url]
2:56 Holy fuck
[QUOTE=Orkel;51605185]his dick turned inside out :disgust:[/QUOTE] I always find autopsy reports like this so chilling. It's like really bad car crash reports. My parents have their own horror stories too, but the medical terms make them more chilling. The worst I can think of is when a motorcyclist crashed and ground his arms into pulled pork (my term, not theirs, ofc) by sliding along the roadway with no protective gear
Wow, i suddenly don't want to ever try scuba diving...
That pic of the crab getting sucked into the pipe always gets me :(
This thread went from informative to way too informative waayyy too quickly
I feel like going on a space walk could be less dangerous than working as a diver.
Fun fact: the Byford Dolphin accident is one of the only cases of someone being subjected to 'explosive decompression,' which can only really happen to people who are deep underwater, as there is enough of a pressure difference for decompression to occur so violently. In space, where the concept is often encountered, decompression can't be that violent because the pressure change is generally only around 1 atmosphere, as opposed to the several atmospheres of pressure difference that can be produced in deep sea work.
[QUOTE=Orkel;51605185]his dick turned inside out :disgust:[/QUOTE] I'm guessing that it was sucked into his abdominal cavity when the rest of the organs were blown out into the water.
[QUOTE=freaka;51605875]Theres a pic from one of the divers in an autopsy, its obviously pretty NSFW [url]http://www.documentingreality.com/forum/attachments/f237/581590d1415139828-pictures-byford-dolphin-diving-bell-accident-byforddolphindeathpicture.jpg[/url][/QUOTE] Jeez it looks like you literally turn into a mangled ground meat/flesh chunk hybrid
[QUOTE=paindoc;51606475]I always find autopsy reports like this so chilling. It's like really bad car crash reports. My parents have their own horror stories too, [B]but the medical terms make them more chilling.[/B] The worst I can think of is when a motorcyclist crashed and ground his arms into pulled pork (my term, not theirs, ofc) by sliding along the roadway with no protective gear[/QUOTE] Like "Injury incompatible with life"
[QUOTE=Crimor;51608278]Like "Injury incompatible with life"[/QUOTE] "Total structural loss" was a term I saw in a medical report. If memory serves, that was the one where a shipping container landed on a guy after a hydraulic failure on the crane.
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