This booklet is meant to supply the reader with uncomplicated details on quite a few problems with the dependability research and overview of engineering platforms with the vital aim to aid the reader practice such an research and overview. via the definition of the IEC overseas usual 50(191) dependability is the collective time period used to explain the provision peiformance and its influencing components: reliability peiformance, maintainability peiformance and upkeep help functionality. Dependability is a time period used for a normal description of method functionality yet now not a high quality which can be expressed via a unmarried quantitative degree. There are numerous different quantitative phrases, equivalent to reliability, unreliability, time-specific and steady-state availability and unavailability, which jointly shape a foundation for comparing the dependability of a process. A method is taken as liable if it satisfies all standards of the purchasers in regards to numerous dependability performances and indices. The dependability offers with disasters, maintenance, preventive upkeep in addition to with charges linked to funding and repair interruptions or project disasters. consequently, it's a vitally important characteristic of process caliber. The dependability evaluate is strongly established upon event and statistical facts at the habit of a procedure and of its parts. utilizing prior event with an identical or related structures and parts, the possible operation might be estimated and superior designs and buildings may be conceived. therefore, the dependability research makes it attainable to profit from the prior for greater destiny solutions.