When production stops due to an equipment failure, maintenance reacts by fixing the equipment to restore operations. Because of the time factor, it’s common to “do it quick and dirty” rather than perform a comprehensive repair. These repairs are typically not planned or prepped, which means there are variations in repair effectiveness, depending upon who performed the repair.
Scheduled repairs are usually assigned by work order. The work order lists drawings, materials, tools, and procedures needed to perform the repair. Furthermore, it’s assigned to someone who is qualified to perform that repair.
Today, a work order is typically generated from a computerized maintenance management system (CMMS). This makes it possible to plan a reactive repair.
Let’s say the line stops and Joe responds to the trouble call. He follows a troubleshooting guide that he pulls up on his wireless tablet. He determines the problem is with the VFD that controls the main drive motor. He’s not qualified on the VFD so he contacts Pam, his supervisor. Pam generates a work order for VFD repair (troubleshooting and adjustment), assigning it to Ben for immediate completion.