Trailer Air Tank Repair

Let's say that you are an experienced welder, and that some came to you asking if you could repair a cracked air tank, WHAT WOULD YOU SAY?

For one, Momentum would not weld a cracked air tank, because a failing air tank can be dangerous, the larger a tank, the more explosive the failure can be. I say, why weld a failing tank that is likely near vibration-induced failure at other weldments in the tank to the base area? BTW, did I say we do mobile throughout the entire process? From the initial inspection for air leak diagnostic to air tank sampling/sourcing to the new tank replacement.