Or this will happen ( not my tank)

 

Those look really scarey.. have you ever HEARD one while its doing that? LOL!!

 

yea, once I heard one, its an attention getter, once you hear that first pop, it's too late!

 

how does that happen? that tanker looks like it's made out of aluminum foil :lol:

 

what the hell happened there?

 

that is an insulated tanker, it has an inner stainless steel tank, then a layer of insulation covered by aluminum, if you unload the tank with a pump and you dont open the hatch, it builds up a vacuum and the tank implodes. likewise, if you load it and dont open the hatch, it builds up pressure and it explodes.. either way, you have a really bad day.

 

wow

 

this guy claimed that the wind blew his hatch shut and he didnt know it. last I heard, he was unemployed. moral.... if you screw up. dont lie about it

 

On a fuel oil truck, there is a vent that automatically opens when oil is removed from the tank (while making a delivery) so air can get back in. It seems strange to me that a hatch would have to be manually opened every time the truck is off loaded.

I guess a truck of that type is off loaded by gravity? I wonder how long it took from the time the first pop sounded until the driver was able to get to the valve and stop the flow?

I've heard that "pop" sound and it is scary. In my case, the vent got clogged or something while making a delivery using a PTO pump. I was able to immediately shut the flow off. I was fortunate enough to be able to wrestle the hatch open and the single dent popped back out. 8)

 

The thing that amazes me most about this thread is that ordinary air pressure can do that kind of damage to a huge ass metal tank. It's not like a submarine getting crushed by a million PSI of water pressure at the bottom of the ocean or something, but just plain ol' air. Damn.