Reliability survey of standby generator by evaluation of maintenance service data

A reliability survey must be based on the greatest possible number of fronts, both to increase the validity of the survey and to make a critical comparison, whenever needed, between data referring to equipment of the same type but implemented, installed and used in slightly different ways. However, it was immediately noted that obtaining reliability databases created for this specific purpose is extremely hard and expensive, This paper shows how it is possible to obtain reliable information from data collections not having been directly created for this purpose. It is stressed that it is necessary to carefully assess the repercussions that the specific purpose for which the data have been collected may have on the validity of the very data. Through this type of investigation it is at times possible to process the data so that they may be used for reliability purposes