When is the last time you conducted a cost-benefit analysis on maintenance work, and why should you do it? The answer to the second part of that question is you have limited maintenance resources. You can’t do everything so you must decide what to do. And what not to do.
Maintenance Recommendations, Part 7
Spend resources on preventing the highest-cost or most critical downtime first, then use what’s left over on lower-cost and non-critical issues.