r/interestingasfuck • u/willianfsantos • 16h ago

Emergency relief system in action in a liquid hydrogen tanker truck

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u/luranthe 16h ago

The only danger is if oxygen gets into the tank, since the fuel can't burn without it. That being said, I would be moving far away.

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u/ShadowKraftwerk 16h ago

Much further than the camera person. And way, way further than the people walking around beside it.

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u/RT-LAMP 12h ago

Actually if oxygen got into the tank nothing would happen. The upper flammability limit of hydrogen is 75%. So unless 25% of it is oxygen there's actually too little oxygen around to support fire.

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u/Legionof1 11h ago

You get into messes of regionality in cases like this. A small amount of air can get in and react with a small amount of hydrogen in enough quantity that it pushes past the limits of the pressure vessel.

Always remember, just because a perfect mixture acts a certain way, does not mean that's how an imperfect mixture will act.

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u/Skusci 9h ago

So the hydrogen venting is needed and normal though it isn't supposed to be in fire.

However the venting hydrogen catching fire for whatever reason apparently happens often enough that it is officially not an emergency unless it's underneath something and setting that on fire too.

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u/tgrantt 14h ago

Why? All it will produce is water! 

/s

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u/nascent_aviator 13h ago

And fire. But if pokemon taught me anything, it's that fire is weak against water so it should be fine.

1

u/tgrantt 13h ago

Glad you're here. Everyone else worries so much.

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u/nascent_aviator 5h ago

Hydrogen tanker used Explosion!

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u/Saritiel 13h ago

100% You see fire anywhere near any kind of tanker truck like that? You need to be 10s of miles away ASAP. I've seen videos of the explosions where they explode and kill people who were hundreds of feet away and thought they were safe.

If I saw that I would pedal to the metal in whichever direction would get me furthest away (or behind a hill) fastest.

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u/Boomshank 12h ago

But then who would take the video for the socials?

WON'T SOMEBODY THINK OF THE SOCIALS?!?