▲ 285 ▼ The tanks in Cushing, Oklahoma, are hitting bottom. The oil market is about to hit a tipping point | CNN Business (www.cnn.com) submitted 2 months ago by CharlesDarwin@lemmy.world to c/politics@lemmy.world 66 comments fedilink hide all child comments
[–] quick_snail@feddit.nl 2 points 2 months ago (2 children) Why aren't those tanks closed at the top? permalink fedilink source hideshow 4 child comments replies: [–] altphoto@lemmy.today 12 points 2 months ago Something about hydraulics, pneumatics, and the effect of 1ATM over a silly gigantic soda can. That evaporation and out gassing. Can't leave the liquid exposed to air or it will outgass. Can't fill the can or empty the can if it's sealed or it will implode or explode. So they float a cover over the stuff. permalink fedilink source parent [–] SaveTheTuaHawk@lemmy.ca 2 points 2 months ago They are covered, the lid lowers as the fuel drains. You cannot have a gaseous headspace with petroleum, it's dangerous. permalink fedilink source parent
[–] altphoto@lemmy.today 12 points 2 months ago Something about hydraulics, pneumatics, and the effect of 1ATM over a silly gigantic soda can. That evaporation and out gassing. Can't leave the liquid exposed to air or it will outgass. Can't fill the can or empty the can if it's sealed or it will implode or explode. So they float a cover over the stuff. permalink fedilink source parent
[–] SaveTheTuaHawk@lemmy.ca 2 points 2 months ago They are covered, the lid lowers as the fuel drains. You cannot have a gaseous headspace with petroleum, it's dangerous. permalink fedilink source parent