Maintenance knowledge lives in people, not systems
Most plants have a CMMS. Very few have a usable record of what actually happened during a repair. The work order closes with a line like replaced bearing, and everything that mattered — the wear pattern, the misalignment that caused it, the temporary fix on the guard, the setting someone changed at three in the morning — stays in the technician's head.
That gap shows up on the next failure. The night-shift tech who takes the same line down six weeks later starts from zero, because there is nothing to read except a closed ticket. It shows up again in reliability meetings, where root-cause analysis depends on recollection rather than evidence.
And it shows up hardest when experienced maintenance techs retire. In many plants the majority of practical troubleshooting knowledge is undocumented and about a decade from walking out the door.
