The goals: Safety and The availability in operation Can only be achieved if the reliability and maintenance requirements are constantly met and the ongoing long-term maintenance work and the operational environment are monitored. Availability is based on the knowledge: The Reliability based on the system failure rates (RAM analysis), The analysis of possible hazards (Hazard and Operability Study), The probability of the occurrence of a failure (fault tree analysis),), The effect of a failure on the functionality of a system[/tooltip] (FMEA (FMECA)) and on The Knowledge of maintainability based on knowledge of repair times. The RAMS process is only completed when a product has been taken out of service and disposed of. A common area of application is railway technology. The related management system is often referred to as Integrated Logistics Support. The connection of these RAMS terms is becoming increasingly important in all industrial sectors with high investment volume and risk potential. Today, according to CENELEC standards, the standards of the European Committee for Electro technical Standardization, the railway system is examined within the scope of the RAMS analysis for adherence to defined safety levels, abbreviated SIL - Safety Integrity Level. This requires a high degree of technical systemic knowledge, coupled with experience in the field of statistical and probabilistic theorems.