Featuring an introduction to risk assessment that utilizes key theory and state-of-the-art applications, this Second Edition discusses the key theory, methods, and applications of risk assessment and has been updated to align the book with ISO 31000 and other new and updated standards. The book begins with an introduction of risk analysis, assessment and management. A new section on the history of risk analysis is included. Next, the authors cover hazards and threats, how to measure and evaluate risk, and risk management, with new sections on risk governance and risk-informed decision making. The book contains new sections on combining accident theories and criteria for evaluating data sources, as well as a section on subjective probabilities. Risk assessment process is covered, as well as new sections on establishing the context, planning, and preparing, risk identification, risk analysis, and risk evaluation. Safe job analysis and computing semi-quantitative methods are now covered. Barrier management and HRA methods for offshore application are also discussed in this new edition. The book contains new chapters on dynamic risk analysis and life-cycle use of risk. As supplement to the book, a booklet of problems and a booklet with solutions to the problems have also been developed.