Carrier nuclear piping corrosion repair

Student-side: original construction jacked misaligned pipes into place and welded them, locking in residual stress. Years later, corrosion-driven repair requires refabrication of entire piping systems because the locked-in stress prevents simple cut-and-replace.

Student: I was on the repair side of it. We have a lot of corrosion issues with carrier nuclear piping that we're dealing with right now. Back in the shipyard, when they built the thing, they would jack a pipe — if it didn't line up, you jack it on tight and weld it. And now we go in years later, and we cut that pipe out and realize you can't just rebuild it and have your piping line up with no stress. So now you refabricate entire piping systems with pretty complicated processes that hold it back together because it was easy to just crank it over a few inches and weld it. There's a lot of resources that go onto a ship.