This revised edition provides the basics of applying hazard and operability study (Hazop) and hazard analysis (Hazan). Hazop is a creative but systematic method of identifying hazards in process plants. Hazard analysis is then used to quantify the risks from these hazards, and to assess how far to go in reducing them. This book is presented in easy-to-read style and explains: what a Hazop is, who carries it out, when, and how long it should take; points to watch during a Hazop; an example of a Hazop; Hazops on flowsheets; the stages of Hazard analysis; the Fatal Accident Rate; risks to the public; estimating how often an accident will occur, with examples; and pitfalls in Hazan.
After graduating in chemistry at Liverpool University in 1944 Trevor Kletz joined Imperial Chemical Industries (ICI) and spent eight years in research, sixteen in production management and the last fourteen as safety adviser to the Petrochemicals Division. In 1978 he was appointed an Industrial (part-time) Professor at Loughborough University, UK. On retiring from ICI in 1982 he joined the University full-time; in 1986 he became a visiting fellow and is now a visiting professor, and also an adjunct professor at the Mary Kay O'Connor Process Safety Center at Texas A&M University.
He has written ten books and many papers on loss prevention and process safety and the 5th edition of his best-selling book, What Went Wrong?, was published in 2009. He is a Fellow of the Royal Academy of Engineering, the Institution of Chemical Engineers, the Royal Society of Chemistry (all UK) and the American Institute of Chemical Engineers. He was appointed an Officer of the Order of the British Empire (OBE) in 1997.
