The vibrations and salt buildup inside of the evaporators led to a few broken pipes. The engines required constant fine-tuning. Leaks were a regular nuisance. A fuel or oil line would break or a gasket would give away. The piping of two of the fuel tanks cracked, which required engineers to weld them back together.…
Source: Gizmodo – How America’s Aging Icebreaker Trudged Through Its Last Mission