Check your gas cap vent

[Niel Hoback]

    This is what happens to an unvented tank and a really strong pump.

[wldavis3]

Ouch !!!!!

[Dan Hiebert]

Uff da!

Edited November 17, 2017 by Dan Hiebert

[Niel Hoback]

Dan, you speak Norski?

[KindachiShota]

Damn! 

[Don Coatney]

Same principle applies to tanks of all sizes that are unloaded with a pump and no vent.

 

[Dan Hiebert]

On ‎11‎/‎17‎/‎2017 at 7:11 PM, Niel Hoback said:

Dan, you speak Norski?

Nah, but you pick things up.  My Grandma was Finnish, and said that all the time (usually because of me and/or my brother).  I always thought it was a Finn thing, but have since learned it wasn't.  She grew up in the western UP and must have picked it up from Norwegian folks up there.  I've worked with a lot of people that hailed from Washington to Minnesota that would blurt that out once in a while as well.   

[Plymouthy Adams]

I personally knew a man who had on his first week of work at a large well known chemical company pumped a rail car down to an imploded tank....the supervisor was found at fault for NOT providing venting instructions for the process to the new employee..

[Flatie46]

I would think once the tank ran dry the pump would loose prime, then it would be hard to create enough suction to collapse a tank. Depending on the type of pump anyway.

In the case of the rail car I'm sure that was done with an extremely  high volume pump.

We've got a few big diaphragm pumps at work we use to pump  quench oil and Polymer from the pits and heat treat furnaces.  I know one that you can't run it wide open,  'cause if you do the hose will not survive.