Torker... Your point is well taken. The owner/operator of a piece of equipment on a mountainside, presumably making the big bucks, could probably care less about "going by the book". All he knows is that his nuts are buried in the sand and it's getting hot, and all he's interested in at the moment is getting his equipment back on line.
Radkin...Your point is equally well taken. With something as difficult and "iffy" as welding cast iron, when you know the proper technique, and especially where there is liability involved, it is not only prudent but also professional to use the proper procedures and techniques to accomplish the repair, especially when and where conditions allow you to do so.
Both of you guys are equally correct...at least from a philosophical viewpoint. Far be it from me to find fault with either of you.
My original question has been answered, not only by the two of you, but collectively by everyone who took the time and effort to respond. Thanks to all.
There is no shortage of experts, the trick is knowing which one to listen to!