Bleve Demo

[bigbradford69]

GOOSH

[crudeoilsystems]

yikes

[KarmzHD]

lol i work with this shit .....

[SarraPiyopiyo]

Combine Gasoline with an oxidizer, and you have something that is way more explosive than even a rail car full of LPG.

There's really no reason to do that, though, unless you're making a rocket, or a bomb.

[Voss2120]

Bleves are bad for your health... this is bad shit.

[intrptr]

I believe the bleve went blam!

[theknightlynews]

Will Lyman can rivet us in our seats by reading the phone book.

[frothyshoes]

My instructor used this video in class last semester :D

[VonBrunswick]

if one of does is that big Imagine 100 of does exploding next to each other

[35Canuck]

The valve can actually be set for any pressure that is required. In the case of vessels, the are usually set for the MAWP (maximum allowable working pressure). Generally, it will do its job to releve the pressure until the system is shutdown or the fire is put out. Catastrophic explosions happen generally to happen in an unmanned situation or when the are extenuating circumstances like collisions thqt weaken the metal already.

[Armydillo0]

1:26 If you look at the right side of the screen you can see a piece of the tank go flying

[Lessinath]

And just think, this is a small tank. A large tank like a rail car or large industrial storage tank doing this can create a fireball (and associated heat radiation) and pressure wave comparable to a small nuclear explosion.

[dragonparty2]

The reason why the valve doesn't stay open when releasing gas is because when the pressure becomes too low, fire can enter into the tank and ignite everything. That is why the valve only operates under high pressure.

[Peedlebum]

Very interesting - thanks for posting

[greenboy623]

Wow, now that is just impressive. I am damn glad we have a good fire department around here.

[TheDylanJoyce]

why don't they just keep the relief valve open until it burns out?

[benchaffleck]

Impressive shock waves from these expanding gas explosions. Also, very effective for military use, such as the butane bombs and fuel-air bursts. The pressure is very destructive to people and porperty.

[Beardown502]

This video is cool, we watched it in my fire academy

[jimgreene68]

Very nice video, thanks for posting...

[bigman95impala]

Big Loud Explosion Very Exciting

[train52000]

THAT WAS AWESOME!!!!!!!!!!!!!!!!!

[indy811]

I need this for my propane safety classes. how do I get a copy?

indy811

[bvsgnova]

that was pretty cool

[00Delaney00]

Sorry mam but it might take a little while before we get your hot water back on.

[ficklefab]

Why will the tank rupture when the safety release valve is still intact?

[Lessinath]

@ficklefab - It will fail with an intact relief valve because the relief valve is set to activate at a set pressure. However, as you heat metal it weakens, and eventually the metal's point (pressure) of failure somewhere on the tank will be below the relief valve's activation pressure.

[Gunshinzero]

.......dang I have a propane tank just like that one (same size too) in my backyard about 10ft from the house.

[walteredu100]

otima demostraçao

é bem clara e mostra perfeitamente como acontece esse fenomeno,,,

[laurenchambers49]

Cool vids ya got. Check me out

[bigbradford69]

GOOOOOOOOOOOOOOOOSH

[vinnyal1]

I would love to get a copy of this for career day at my work place (to show school kids)

[vinnyal1]

I would love to get a copy of this for career day at my work place (to show school kids)

[luismendoza911]

is a great video congratulations is so interesting

[mitchtay99]

Stop and go ejaculation control.

[verkooijen18]

nice

[augdog1230]

the music is great, i find this so interesting

[Primetome]

wow see the shock wave!!!!! And these things are at most gas stations!!!!

[carmenlee87]

I thought that relese valve desing is good. Im sure it could be improved so there would be no bleve

[Keenasalways]

The problem isn't the relief valve, without the valve the tank would burst sooner creating a larger vapour cloud. It's a matter of the fire softening the metal where there is no liquid behind it to disperse the heat. The only way to prevent a bleve is to vent all the contents until the tank is empty.

[Edricofifrit]

@Keen Yes you're right, the more the relief valve vented away excess gas, the more surface area of the tanks metal would be exposed to flame, which the areas not touching the liquid inside would soften faster due to not being cooled by the liquid.

[chrisgrul]

@Keenasalways: Even if the metal of the tank doesn't heat up (which is often the case in BLEVEs involving non-flammable gas and no fire), the expanding vapour is what causes the explosion due to the enormous pressure that builds up within the tank. Even if a relief valve is unsuccessful in venting the excess pressure, it will still (hopefully) give enough time for personnel to clear to a safe distance.

[riveness]

Ah the old big loud explosion.

Good video

[braceyoself777]

Man.....and that was a small tank too.

[denelson83]

Wow... See the shockwave upon rupture?

[azurescens420]

@denelson83

No, I completely missed it, if you hadn't pointed it out I would have no idea

[wiwtiw]

thanks too for watching

[freedomisntfreeffs]

Really informative video! Thank you sir!

[chatossi]

A very clear explanation.

Thanks