The best time to wear a stripped sweater....

is all the time.

Inspiration per Val

Val, who gave a presentation on her favorite band, has inspired me to share with you a few of my favorite bands.
The genre I prefer is varied. I enjoy all genres other than like folk, classical (other than piano and flute), and most forms of grindcore (though I do enjoy the band Waking the Cadaver).
For a long time, my favorite bands have consisted of: A Day to Remember, Blink182, Senses Fail, Taking Back Sunday, Sum 41, Jimmy Eat World and others. More recently I listen to a lot of Neck Deep, Knuckle Punch, Too Close To Touch, Alive Like Me, Kingdom of Giants, If I Were You, I See Stars, I Prevail and many others.
Country music also is a love and I enjoy some Rap and Hip-Hop songs.
Music is rad.

Question

As some of you may know, at times, a gas line underground may leak or be hit by a excavation company or other reasons. When this happens, usually it is a type of plastic pipe that they use almost exclusively now for new gas lines which is called polyethylene, or, PE for short. There are many kinds of gas piping materials out in the country but this is the most common new installation and usually, the easiest to repair if something were to be hit. Some line are made of PVC (very dangerous),black iron steel, cast iron steel, etc. The reason I spoke about the excavation hitting lines at times is because when a PE line is hit, it can be squeezed at both ends and the repair can take place right there. But what about a steel line that is hit? It isn't possible to squeeze a steel line, they can isolate the gas at different valves but the result will be the loss of homes in the thousands typically and the relight process is daunting. So how would they be able to repair a steel line if they wouldn't isolate the lines at valves? They would actually weld right there the hit is, with gas blowing out of the pipe. But how? Wouldn't they cause an explosion? Any thoughts?