In many settings (for example, manufacturing), repairs are done under time pressure and by whoever is available. What often happens is the repair looks correct but isn’t correct. And a downtime bomb is created.
Consider your most critical production equipment. How much would a repeat downtime event cost? Probably orders of magnitude more than the cost of 15 additional minutes of downtime for a qualified technician to work methodically. Compare the cost of the time that’s “wasted” performing a tool check after completing a repair in a switchgear set to the cost of an arc blast from that ratchet handle left across two phases.
Sam completes the same repair job as John, but in 20% less time. Who is the better tech? John “wastes time” laying out a drop cloth, putting parts in a dedicated bucket, and meticulously cleaning and inspecting everything when performing a repair job. Consequently, John never introduces dirt into the system. Sam skips all those steps but takes time for the dirt to result in another equipment failure. Therefore, nobody sees that of the two techs, only John is qualified to perform the work.
What’s the key takeaway here? Examine how individuals perform repairs and adjust as necessary.