Estimating maintenance labour resources
It is common in the mining industry for people to use a maintenance labour ratio per service meter unit (SMU) or operated hours, when estimating the maintenance labour resources required for maintaining mobile mining equipment. The OEM’s provide benchmarks of maintenance labour per SMU and other companies have their own benchmarks for the different type of equipment. The benchmarks can be easily built from a zero base of tasks with man hours required.
This approach works ok for setting up a new business and defining the required maintenance team to support the fleet. However, there are some limitations with this method for estimating maintenance labour resources when an existing business wants to review their current resources and reset the team to an appropriate level to improve and to manage the tasks at hand. These limitations are as follows: