This revision of a combined text and reference book for safety engineering courses brings together system safety management and analysis. The basics of safety engineering and methods of application of the principles to specific engineering projects, facilities or operations are covered. New chapters on software analysis, computer fault tree analysis, and Weibull and logarithmic normal distributions are included, all of which have gained importance in recent years. This remains the only book on the market that covers the important subject matter needed by students and practising engineers.