In a high-demand operation, availability is the number everything else is measured against. The pressure to keep running is exactly what makes it tempting to defer the work that protects availability in the first place.
1. Know which assets actually constrain you
Most operations have a handful of assets that genuinely set the pace, and a larger number that feel urgent but have workarounds. Maintenance effort and spares holding should be weighted heavily toward the first group.
2. Schedule around the operation, not against it
Planned work that consistently gets bumped is not really planned. Build service windows around:
- Shift patterns and crew changes
- Planned shutdowns
- Seasonal access constraints
Tip: If a planned service has been deferred three times, the schedule is wrong — not the crew.
3. Hold the right spares, not the most spares
Inventory is expensive and most of it sits still. The parts worth holding are the ones with long lead times, high consequence and a known wear pattern.
4. Use condition data to move work earlier
Oil analysis, vibration, temperature and pressure trends give you warning. The value is not in collecting the data but in acting on it early enough that the work fits a planned window.
Tip: Uptime is lost on return to service as often as on failure. Functional testing before handback prevents the same machine coming back next week.
Final thoughts
Availability is built from unglamorous habits: knowing your constraints, protecting the schedule, and acting on what the data is telling you.
