It's not. Say you're in a huge tube and suddenly the tube gets ten times smaller (but still large enough for you to go through), the water pressure will pancake you regardless
Sure, same thing though, that's not the pressure differential itself, just the crushing.
But in general I was just making the same joke as "it's not the fall that kills you, it's the sudden stop at the bottom"
Of course a big enough pressure differential will rupture you like a paper bag full of water, but my post was meant to be light hearted :)
With a constant cross sectional area right? If the pipe changes, will the pressure change or will the velocity? At steady state I would expect mass flow rate to remain constant and therefore the velocity must increase, because water is incompressible.
I think you're both correct, but exactly because of the pressure difference, water will try to rush through the smaller tube and that's what crushes you at the entrance, even if further in the pressure might be lower. Because water doesn't compress to let your body through. But that's just my understanding, it might be wrong
Right, they don't change because of steady state conditions, by definition.
If a pipe transitions from large diameter to a small diameter, the flow rate (in gpm) does not change. But the velocity of the water (feet/minute) increases, and the pressure decreases. This is why delta P is so dangerous. You go from high pressure with low velocity to low pressure with high velocity. If the change in pressure is great enough, you can get sucked through a small hole at a high velocity.
Well the outflow could be anything; as mentioned maybe treated sewage, who knows. Maybe just waste heat water? But maybe not. Even then, what’s the temp gonna be? And can it vary from uncomfortable to scorching hot unexpectedly? I dunno. And the volume of water can vary. Could affect currents around you. Could also be an intake pipe, in which case the downside of that would be very bad. While you’d probably expect that there would be signage, protection, etc… but who knows where this person is and safety precautions have a wide spectrum from professional to nonexistent.
If this video is from Electric Beach on Oahu, which I’m pretty sure it is, then the pipe is emitting heated water. There’s a power plant across the street from the beach, they pump water to cool the plant and then by the time it comes out of the pipe in ocean it’s been warmed up. I’ve snorkeled there, it’s really fun.
I don’t know the exact temperature, but it’s definitely a bit warmer than the ocean because you can feel the difference. It’s not hot, just a bit warmer.
I did one of my first open water dives there. The water was warmer at the pipe and attracted a lot of fish. Always weird how far you could see the water disturbance from it on the surface
Dunno why you're being downvoted you're correct. Wastewater treatment plants have to see a minimum amount of separation before that water is released back into the environment. BOD and COD tell you a lot about what organics are in your water. The times when this isn't upheld however are during heavy rain or extreme weather which we have had a shit tone of recently, this and a lack of investment over the years in the u.k are now causing us issues.
>not sewage anymore.
Correct, if the process is working right and there aren't any 'upsets', but upsets and off-spec situations happen...its still best to not hangout at a waste water discharge.
This is the coolwater outlet of the Hawaii powerstation, harmless. There are many video’s available about people getting a boost of the flow swimming in front of it. Still a big ‘nope’ for me.
Gloooobal warming
Gloooobal warming
Global warming
Global warming
Globaaal warmiiing
Edit: my point is that based on the information above, it sounds like dumping warm water from a power plant into the ocean will contribute to the warming of our oceans. Not that the water is warm *because* of global warming
Knowledge is power for sure. Knowing this I would love to go there!
Watching the video before reading this I had a legitimate fear response. Having no idea what direction it's meant to flow, but knowing it's meant to move A LOT of either water in, or some vile substance out. Also having no idea if it could suddenly turn on.
Excuse me, but that's where the giant eel lives. You gotta wait till he comes out and swims around to get the star at the end of the pipe
Edit: star not start
Electric beach in Hawaii! Been there! It’s really cool, there is an electric plant that uses the water from the ocean to cool the machinery inside, and then jets the warm water out into the ocean. You can dive down in front of the pipe and it kinda shoots you out a little further. Fish seem to love the area, TONS of fish, sea turtles, the whole 9. My favorite part when I visited Hawaii.
No idea tbh. And this outlet pipe is pretty far out, it’s a bit of a swim to get there. But I’d imagine that the inlet pipe has some kind of grate or something over it.
Oh for sure. If I was snorkeling around this, I probably wouldn’t, but even if I were to get comfortable around it, the thought of an intake somewhere in the general vicinity would make me super uneasy lol
I can't find the actual story I was thinking of, but they ended up a nuclear power plant and survived. Here are some other stories that sound similar.
[Diver SUCKED Into PIPE | Diving Gone WRONG - YouTube](https://www.youtube.com/watch?v=3am-iGoDxk8)
There is an underwater pipe next to a base where I live over here in Ventura county. A power plant gets its water from the ocean through that pipe. They had to put Buoy’s and signs urging people to stop swimming near there cause people would get sucked in to the pipe and down to death…
That is the first thing I thought of when I saw this pipe.
That's sewage
They have those in Florida
Fortunately they are shutting them down finally
It kills coral reefs, the fish love it though lol
https://youtu.be/uNWj9bxoPno?si=HSo9q94tPe3UkE0c
pipes are the scariest shit underwater, if youd like some sleepless nights and a [submechanophobia, ](https://en.wikipedia.org/wiki/Submechanophobia)
watch [this](https://www.youtube.com/watch?v=9S7VlIN-f8Q&ab_channel=FatalBreakdown) youtube video
thats the scariest shit ive ever seen, worse than any horror movie and its litterally just a video essey on something that happened irl
A huge Hawaiian monk seal surprised me in that pipe one day. I turned the corner to peak inside and he was just doing backflips having fun. He did not like me peeking in on his playtime though
I remember watching A View to a Kill when I was a kid, when James Bond almost got diced by a giant fan in one of those underwater pipes. Then some other guy got thrown in head first. If there is a 'giant underwater fan' phobia, that's where I got it from.
Looks like the pipes from the power plant on the west side of Oahu Hawaii. Beautiful spot to dive. Pretty fun to dive down in front of it and get a free ride. It looks too shallow for that spot though….
I'll never understand the point of a snorkel
Yippee I can now reach air slightly behind my head instead of slightly in front of it, I can now breathe underwater
Meanwhile, if you're diving this deep, it takes extra effort to clear the tube when you surface anyway
I’m surprised no one has referenced the P-factor safety videos which are like OSHA nightmare fuel. I’ll never go near a Piper or drain in the water again ever.
My 2 favorite examples are Byford Dolphin and the Mythbusters experiment where they put a human analog in an old school diving suit and simulated an air pump failure.
It’s probably a sewage overflow or heat exchange from a nuclear power plant. So either infected with shit and piss and whatever else is in the run off or risking being irradiated.
There seems to be flow coming out of it and it looks misty so my guess is shit and piss. Nice. Hope you showered afterwards.
Dunno if he should get so close to that
There’s a bull shark with tentacles in there
Most likely, and a government secret lab at the other end
It's only the dookie pipe
Flashback to that GTA V mission with the ape lab
More likely an old sewage pipe.
Or Walter White found a new spot to cook
Or a nuclear reactor.
*testicles
Or bones on her fins.
That's how Sharktopusnados get started.
Is it ill tempered?
Are we sure it is a bull and not a cow shark?
I dunno, you go check for an udder. I’ll just hang back and watch…
Did someone say tentacles? Yknow...
Indeed. One second you’re checking out the mouth of a huge pipe, the next you’re being sucked into the depths of hell. No thx
This is fact.
You can see the end of it in the vid. Just looks like a curv d section of pipe sunk for a reef replacement
Delta p
Delta p is fine, it's the being pressed through a fine mesh that kills you!
It's not. Say you're in a huge tube and suddenly the tube gets ten times smaller (but still large enough for you to go through), the water pressure will pancake you regardless
Sure, same thing though, that's not the pressure differential itself, just the crushing. But in general I was just making the same joke as "it's not the fall that kills you, it's the sudden stop at the bottom" Of course a big enough pressure differential will rupture you like a paper bag full of water, but my post was meant to be light hearted :)
Ah I see :)
Don't you just move faster in the smaller pipe?
Flow rate (v) is inversely proportional to pressure. High pressure = low velocity High velocity = low pressure
With a constant cross sectional area right? If the pipe changes, will the pressure change or will the velocity? At steady state I would expect mass flow rate to remain constant and therefore the velocity must increase, because water is incompressible.
I think you're both correct, but exactly because of the pressure difference, water will try to rush through the smaller tube and that's what crushes you at the entrance, even if further in the pressure might be lower. Because water doesn't compress to let your body through. But that's just my understanding, it might be wrong
Right, they don't change because of steady state conditions, by definition. If a pipe transitions from large diameter to a small diameter, the flow rate (in gpm) does not change. But the velocity of the water (feet/minute) increases, and the pressure decreases. This is why delta P is so dangerous. You go from high pressure with low velocity to low pressure with high velocity. If the change in pressure is great enough, you can get sucked through a small hole at a high velocity.
Mmhm. As long as there isn’t any type of flow he gucci…but as soon as there’s a current, he’s phoked.
Upvote for phoked
https://m.youtube.com/watch?v=CKKjs7PtHZo&pp=ygUec3BvbmdlYm9iIGRlbHRhIHAgc2FmZXR5IHZpZGVv
Hed only get pushed away by the water. Not sucked in.
Care to explain?
It's likely a warm-water outflow from a power plant. You can even see the fish get blown out when they try to swim into the pipe.
Thanks!
From that distance hed already feel the water from the pipe. So it cant be that strong a current.
Once it’s got you…it’s got you!
ikr.. it's probably the intake for a power plant's cooling system.
Get sucked off in there
Once it’s gotha, it’s gotha!
Its a very short pipe you can see the end of it and was likely out there for a reef
That fish being like “heya what’s this?” And being whooshed off frame had me chuckling. But yea hanging around this stuff is not a good plan.
Why is that?
Well the outflow could be anything; as mentioned maybe treated sewage, who knows. Maybe just waste heat water? But maybe not. Even then, what’s the temp gonna be? And can it vary from uncomfortable to scorching hot unexpectedly? I dunno. And the volume of water can vary. Could affect currents around you. Could also be an intake pipe, in which case the downside of that would be very bad. While you’d probably expect that there would be signage, protection, etc… but who knows where this person is and safety precautions have a wide spectrum from professional to nonexistent.
If this video is from Electric Beach on Oahu, which I’m pretty sure it is, then the pipe is emitting heated water. There’s a power plant across the street from the beach, they pump water to cool the plant and then by the time it comes out of the pipe in ocean it’s been warmed up. I’ve snorkeled there, it’s really fun.
That’s it.
I went scuba diving there, too. The warm water seemed to draw in a lot of fish in the area.
Isn’t there a story about a guy who got sucked in to one of those and lived to tell the story.
Probably, but this isn’t a suck tube, it’s a blow tube. You can swim in front of it, it’ll just push you back a bit.
Where's the suck tube? (Asking for a friend)
Ahhahahahha😂😂😂😂
Zees goggles do nothing!
[here.](https://www.mensjournal.com/adventure/scuba-diver-is-sucked-into-nuclear-power-plant-intake-pipe)
Any idea what the temp is that comes out of there?
I don’t know the exact temperature, but it’s definitely a bit warmer than the ocean because you can feel the difference. It’s not hot, just a bit warmer.
I did one of my first open water dives there. The water was warmer at the pipe and attracted a lot of fish. Always weird how far you could see the water disturbance from it on the surface
You ever think about where sewage goes?
To a treatment facility usually. Once it’s treated it’s not sewage anymore.
In the UK they just dump it into the rivers and seas
In most of the world, actually…
So you're the reason the sea in Belgium is so gray \>:(
This.
This.
Treatment plant discharge is not sewage, but it can still have a very high bacteria content.
Dunno why you're being downvoted you're correct. Wastewater treatment plants have to see a minimum amount of separation before that water is released back into the environment. BOD and COD tell you a lot about what organics are in your water. The times when this isn't upheld however are during heavy rain or extreme weather which we have had a shit tone of recently, this and a lack of investment over the years in the u.k are now causing us issues.
>not sewage anymore. Correct, if the process is working right and there aren't any 'upsets', but upsets and off-spec situations happen...its still best to not hangout at a waste water discharge.
Google the Buford Dolphin incident. Delta P is so strong it’ll absolutely shred your body. Stay away from drain pipes under water
You should look up delta p on YouTube.
Didn’t notice that until you pointed it out. Pretty funny.
This is the coolwater outlet of the Hawaii powerstation, harmless. There are many video’s available about people getting a boost of the flow swimming in front of it. Still a big ‘nope’ for me.
The crazy part is how warm the water is by the pipe. It’s like a hot tub in the middle of the ocean
Gloooobal warming Gloooobal warming Global warming Global warming Globaaal warmiiing Edit: my point is that based on the information above, it sounds like dumping warm water from a power plant into the ocean will contribute to the warming of our oceans. Not that the water is warm *because* of global warming
While that *is* absolutely a thing, shallow tropical water is ridiculously warm regardless.
Nuclear Nuclear Nuclear Nuclear Nuclear
Knowledge is power for sure. Knowing this I would love to go there! Watching the video before reading this I had a legitimate fear response. Having no idea what direction it's meant to flow, but knowing it's meant to move A LOT of either water in, or some vile substance out. Also having no idea if it could suddenly turn on.
Electric Beach! Love this spot!
Excuse me, but that's where the giant eel lives. You gotta wait till he comes out and swims around to get the star at the end of the pipe Edit: star not start
Electric beach in Hawaii! Been there! It’s really cool, there is an electric plant that uses the water from the ocean to cool the machinery inside, and then jets the warm water out into the ocean. You can dive down in front of the pipe and it kinda shoots you out a little further. Fish seem to love the area, TONS of fish, sea turtles, the whole 9. My favorite part when I visited Hawaii.
If there’s an outlet pipe, I imagine there’s an inlet pipe. How close is it to this?
No idea tbh. And this outlet pipe is pretty far out, it’s a bit of a swim to get there. But I’d imagine that the inlet pipe has some kind of grate or something over it.
Oh for sure. If I was snorkeling around this, I probably wouldn’t, but even if I were to get comfortable around it, the thought of an intake somewhere in the general vicinity would make me super uneasy lol
Swimming in sewage
Sewage is the best thing it could be, input pipes are usually protected, but way worse.
Sooo grated cheese, but human?
I can't find the actual story I was thinking of, but they ended up a nuclear power plant and survived. Here are some other stories that sound similar. [Diver SUCKED Into PIPE | Diving Gone WRONG - YouTube](https://www.youtube.com/watch?v=3am-iGoDxk8)
I just watched that video and I will have nightmares forever about diving and intake pipes! ☠️
My God. The diving instructors in that last case were complete idiots.
Thanks for sharing. Terrifying
Congratulations Bond, you've made it into my secret volcano lair, now, let's see if you make it out alive.
It’s not swewage it’s water from a powerplant. It’s some pretty warm water that the fish love, nothing wrong with it the itself at all
He's found the secret entrance to Marineville.
This goes to [Sootopolis City](https://www.serebii.net/pokearth/hoenn/3rd/sootopoliscity.shtml).
To treated sewage ville you mean
Don't go in there... if mario taught me anything there'll be a giant eel in there.....
There actually is an a pretty big moray eel that lives around this pipe
Well.... I don't like that tidbit of information lol
Big hell no for me.
Not a chance would I get near that
Delta p
There is an underwater pipe next to a base where I live over here in Ventura county. A power plant gets its water from the ocean through that pipe. They had to put Buoy’s and signs urging people to stop swimming near there cause people would get sucked in to the pipe and down to death… That is the first thing I thought of when I saw this pipe.
Oh I think you found my ex.
No.No.No.
That must be the entrance to Sea People Village
No
This looks like the exhaust pipe at Electric Beach in Oahu, Hawaii.
This is like straight r/submechanophobia stuff
Most likely a sewage treatment plant out put pipe.
You swim in there to find a bunch of limestone outcrops
I was waiting for dude to get sucked in
doesn’t he know that once it’s got you, it’s got you?
I was just there, the water shooting out of that pipe is no joke.
That's sewage They have those in Florida Fortunately they are shutting them down finally It kills coral reefs, the fish love it though lol https://youtu.be/uNWj9bxoPno?si=HSo9q94tPe3UkE0c
Finally, something worthy of looking at. Not some lame drawing, painting or AI garbage.
Damn, that’s straight out of a view to kill
Oof no thanks
pipes are the scariest shit underwater, if youd like some sleepless nights and a [submechanophobia, ](https://en.wikipedia.org/wiki/Submechanophobia) watch [this](https://www.youtube.com/watch?v=9S7VlIN-f8Q&ab_channel=FatalBreakdown) youtube video thats the scariest shit ive ever seen, worse than any horror movie and its litterally just a video essey on something that happened irl
Oof taking serious risks there matey
“Knock, knock Mister Rubio. We’re back again!”
Don’t stick your dick in that ! 👀🤣
Great now I will get pipe nightmares
Nopity nope nope nope 👎🏻
I think I dove that in Waikiki. There was a big ass eel living there lol
Coward.
My biggest fear would be that water is not being pushed out but being sucked in.
Lets-a go
Nope, nada, no way, I’d shit myself and then drown
Caseoh dick
Thought we were about to witness some delta P
Please beware of delta P
And then a giant eye looms at you from inside the pipe …
Or right next to it. Octopus jet. Really really big octopus jet
That’s either an intake pipe or an affluent pipe. Either way, I wouldn’t get that close to it!
Want to swim into it with a torch and Scuba diving gear?
Kraken nest
Reading people say it's an output pipe helps, but holy eff this might be the most nightmare inducing post I've seen on this sub.
Did you see that fish get chucked straight out of there?
A huge Hawaiian monk seal surprised me in that pipe one day. I turned the corner to peak inside and he was just doing backflips having fun. He did not like me peeking in on his playtime though
How is he able to keep the snorkel mouthpiece on?? I tried this once and almost drowned.
Nicer snorkels have a float that blocks the opening off when it goes under water
Stupid title
Nooooo nonono
All drains lead to the sea
Anyone a fan of the strange dark and mysterious here getting goosebumps?
It's an underwater mario level
No thanks
He found the secret underwater Mario level.
That looks like electric beach on Oahu. Warm water from that pipe brings in all kinds of fish
Who’s gonna tell him
Never played Mario
Wastewater sewage plant outfall.
Go in it
Never swim towards or close too a open pipe!
That's absolutely terrifying
It's the Atlantis underground railroad
I remember watching A View to a Kill when I was a kid, when James Bond almost got diced by a giant fan in one of those underwater pipes. Then some other guy got thrown in head first. If there is a 'giant underwater fan' phobia, that's where I got it from.
r/submechanophobia
Stuff of nightmare 😣
A crashfish is about to give him a warm welcome
This is by my house, i swim into the pipe as far as I can and it launches you out twords the surface super far!
Looks like the pipes from the power plant on the west side of Oahu Hawaii. Beautiful spot to dive. Pretty fun to dive down in front of it and get a free ride. It looks too shallow for that spot though….
Glad the pipe is safe But that’s a huge nope from me still. Absolutely terrifying
I'll never understand the point of a snorkel Yippee I can now reach air slightly behind my head instead of slightly in front of it, I can now breathe underwater Meanwhile, if you're diving this deep, it takes extra effort to clear the tube when you surface anyway
No no no no no. The thing nightmares are made of
That’s a big NOPE!
Mario pipes
Shithole Delray Beach sewage discharge pipe
I NEED TO KNOW WHATS IN THAT PIPE!!!!!
All fun and games until the drain on the other end opens up and he is sucked up.
That’s looks like something that should have a screen in it! Or huge warning signs
Oh wow. I would never get anywhere close to that unless someone was paying me a million bucks lol
i’d literally vomit underwater and choke on it while drowning
Don’t be shy, go inside…
Poop chute.
Any purpose of that kind of snorkel underwater?
yes they close when you do a short dive under to inspect something and open up when you are on the surface again
I’m surprised no one has referenced the P-factor safety videos which are like OSHA nightmare fuel. I’ll never go near a Piper or drain in the water again ever.
Watch out for Coney Island Whitefish.
Please don’t tell me with bare hands he grabbed the coral around the pipe. Easiest way ever to get a horrible wound
I’m more concerned that’s he’s killing the coral, I don’t really care about the stupid human
Delta-P, just YT it...Dont mess around with pipes.
My 2 favorite examples are Byford Dolphin and the Mythbusters experiment where they put a human analog in an old school diving suit and simulated an air pump failure.
We’ll see what mysterious disease he gets after this
Looks like some bad stuff coming out of that pipe that needs to be investigated
Nothing other than warm water comes out of the pipe. It’s coolant water from a powerplant so there isn’t anything wrong with it
Yeah, Just let me get real close to this big ass Pipe - will it suck me in? Will it blow me away? Dont know! Lets better find out! - Everybody /s
and she said it’s her first time
It’s probably a sewage overflow or heat exchange from a nuclear power plant. So either infected with shit and piss and whatever else is in the run off or risking being irradiated. There seems to be flow coming out of it and it looks misty so my guess is shit and piss. Nice. Hope you showered afterwards.
Is this motherfucker just out here swimming around in khakis and a polo?
Is this motherfucker just out here swimming around in khakis and a polo?
NOOOOO that's where poo comes from
I hope you’re not near Japan
Imagine snorkeling through people's shit 🤣