The basic concepts, techniques and potential of reliability engineering are introduced. The main part of the course is concerned with the theory and practice of availability and reliability assessment which are described and applied. Frequency analysis is based on systems analysis and assessment. Fault tree analysis is demonstrated and applied to practical engineering systems and chemical processes. Other reliability techniques including reliability block diagrams and failure mode and effects analysis (FMEA) are also covered. Techniques for both qualitative analysis of maintainability are introduced.