2. Maintenance policies
Maintenance policy or strategy is the set of decisions for the identification of faults, researching the cause, and
execution of many inspections, replacing the parts or repairing the parts (Al-Najjar 1997, Kelly 1997). In the present
paper, five maintenance policies, Failure-Based Maintenance, Preventive Maintenance, Condition-Based
Maintenance, Total Productive Maintenance, and Total Quality Maintenance, have been taken into consideration
for the analysis. Brief descriptions of the above-mentioned maintenance policies are given below.