The document discusses the importance of using failure parameters in reliability analysis and RAMS for major projects. It analyzes four cases studying the mean time between failures (MTBF), mean time to repair (MTTR), and availability of a system over time as different maintenance strategies are implemented. While the MTBF may increase between cases, the total downtime and availability metrics show a more complete picture of overall reliability performance. Considering both planned and unplanned outages is crucial to accurately assess and compare systems' reliability.