This lecture covers the goals of reliability processes, including ensuring system performance and safety, managing risks, and producing comprehensive documentation. It discusses causes of failures such as random events, design errors, and wear-out. Tools like FMECA (Failure Mode Effects and Criticality Analysis) are explored for calculating failure probabilities. The lecture also delves into the reliability of systems and structures, emphasizing the importance of quality assurance, risk management, and safety considerations. Cost implications and limitations of reliability processes are also addressed.