4. Plant maintenance

4.1 Maintenance policy

Maintenance can be preventive or curative. The aim of the maintenance policy is to find the right compromise between too much maintenance, which is costly, and too little maintenance, which generates defects or even premature renewal.

The choice of maintenance actions is complex, because the maintenance cycle for equipment is such that it is difficult to identify a clear relationship between actions and results.

However, as far as possible, the frequency...