The industry consensus is that reactive maintenance costs three to five times more than planned maintenance. In African mining, the multiplier is higher because the supply chain is longer, the spares are harder to source, and the regulatory consequences are steeper.
A primary crusher down for one hour at a Witwatersrand gold operation does not cost one hour of lost output. It costs the cascading starvation of every downstream process: the mill, the flotation cell, the thickener. Add the emergency procurement of a part that was available two weeks ago at standard lead time and is now available tomorrow at three times the price.
The math is not complicated. An operation running 40 hours of unplanned downtime per month at $250 per hour is losing $120,000 per year to downtime alone. Add the emergency procurement premium, the overtime labour, the regulatory fines for missed inspections, and the insurance exposure from undocumented maintenance, and the real number is significantly higher.
Industry benchmarks from PwC, McKinsey, and Plant Engineering consistently show that a well-implemented CMMS reduces unplanned downtime by 15 to 25 percent in the first year. For a mid-size African mining operation, that is $20,000 to $30,000 in recovered production value, before counting the labour, inventory, and compliance savings.
The question is not whether a CMMS pays for itself. It is how quickly. For most operations we work with, the answer is measured in weeks, not months.