The HAZOP Leader’s Handbook is designed specifically to help HAZOP leaders plan and execute successful HAZOP studies, based on the author’s many years of experience of participating in, observing and facilitating HAZOP studies, as well as observing, training, mentoring and assessing HAZOP leaders. The book assumes that the reader understands the methodology and has experienced HAZOP meetings and does not seek to explain the methodology itself. Rather, it focuses on the application of the methodology and the responsibilities and skills of the HAZOP leader in the preparation, execution and reporting of the study. Although the principal subject is HAZOP, much of the content equally applies to other facilitated hazard identification techniques such as Hazard Identification (HAZID) or Failure Modes Effects and Criticality Analysis (FMECA). The prime purpose of this book is to provide guidance specific to HAZOP leaders to help them to maximise the effectiveness of their HAZOP studies, thereby getting the most benefit from the methodology, promoting consistency and rigour in its application and sustaining its well-earned reputation.