jwz: engineering pornography
Rohit Khare stashed this in potpourri
Why am I not surprised to find a comment from Kragen at the end of this page? :)
nice linkbait title! hah.
Agreed, this was not what I was expecting:
"That's where the LN-2 comes in. An elegant solution if you ask me. They dig holes on both sides (20-30 feet each way) of the fault, wrap the pipe with giant (asbestos-looking) blankets filled with all kind of tubes and wires, feed LN-2 through the tubes, and *freeze* the oil. Viola! Programmable plugs! The faulty section is drained, sliced, the bad stuff removed, replaced, welded back together, topped off, and the plugs are thawed. I was amazed."
so NSFW. perverts