Ok, not sure if you're just trolling me at this point.
You do you bud.

The gas tank is not a sealed vessel. It will not become pressurized to the point of rupture. But if, god forbid, you find yourself in that situation you go right ahead and pull the nozzle and spread the fire as much as possible. What do I know, I'm just a firefighter trained in such things.

https://youtu.be/sCW-dHwiPWs
A better example.

https://youtu.be/qJV0dg9jOYI
Fast forward to 3:47 to see what happens when you remove the nozzle.

The tank is not pressurized. Not only is it vented, the cap is open. What you are talking about is called a "BLEVE". Boiling Liquid Expanding Vapor Explosion. This can happen with propane tanks and the like. That's when the pressurized tank is heated to bursting pressure.
Fire needs 3 things to burn. Fuel, a source of ignition, and oxygen. The last thing you want to do is expose as much fuel as possible to oxygen which is what happens when you take the nozzle out. The fire will probably be contained to the fill tube as the vapors come out but being as there is not enough oxygen in the tank to sustain combustion the fire won't travel down the fill into the tank.

It's a major award.

I-pad, I-pod, I-mac

Ok cool, thanks. I hear death note mentioned often along with attack in titan. I've never seen an anime series or movie (except for Bubblegum Crisis from the 80's). I need to check them out. The one with no-face and the huge gerbil thing look fun too.

Folding up would help in bad weather, also with transporting it for installation or repair.

I assume it is uranium oxide?