Watch out for that old high pressure boiler feed pump at the Johnson plant
Last week in Toledo, we were doing a routine inspection on a 20 year old system. The main feed pump casing had a hairline crack you could only see with a good light and a mirror. My lead said, 'That's nothing, it's been like that for years.' We tagged it but kept it running. Two days later, it let go at a seam during a pressure spike, spraying 350 degree water across the pump room. Nobody got hurt, but it was a close call. Has anyone else had a 'minor' crack turn into a major failure that fast?