Good feedback to design can be achieved through correct documentation and reporting of all field O&M activities, especially those that have to do with RCM. This can be achieved if a computerised maintenance management system (CMMS) is used, where all failures, safety incidents and maintenance tasks are recorded in detail up to the sub-component level. Moreover, the CMMS should be fully integrated with the other databases of the lifecycle in one central engineering database (see Fig 7 below). As presented in the SIPOC diagram, there exist certain connections between the key databases that make up the engineering database. As the lifecycle transfers from the design up to field maintenance, it is easy to obtain the right data that can contribute to a more effective deployment of each stage in the lifecycle, be it needing design information for field O&M optimisation or making use of real field data for redesign.