Major accidents are rare events due to the many barriers, safeguards and defences developed by modern technologies. But they continue to happen with saddening regularity and their human and financial consequences are all too often unacceptably catastrophic. One of the greatest challenges we face is to develop more effective ways of both understanding and limiting their occurrence. This lucid book presents a set of common principles to further our knowledge of the causes of major accidents ...

Human Error, published in 1991, is a major theoretical integration of several previously isolated literatures. Particularly important is the identification of cognitive processes common to a wide variety of error types. Technology has now reached a point where improved safety can only be achieved on the basis of a better understanding of human error mechanisms. In its treatment of major accidents, the book spans the disciplinary gulf between psychological theory and those concerned with ma...

Managing the Risks of Organizational Accidents introduced the notion of an ’organizational accident’. These are rare but often calamitous events that occur in complex technological systems operating in hazardous circumstances. They stand in sharp contrast to ’individual accidents’ whose damaging consequences are limited to relatively few people or assets. Although they share some common causal factors, they mostly have quite different causal pathways. The frequency of individual accidents ...

This book explores the human contribution to the reliability and resilience of complex, well-defended systems. Usually the human is considered a hazard - a system component whose unsafe acts are implicated in the majority of catastrophic breakdowns. However there is another perspective that has been relatively little studied in its own right - the human as hero, whose adaptations and compensations bring troubled systems back from the brink of disaster time and again. What, if anything, did...

This succinct but absorbing book covers the main way stations on James Reason’s 40-year journey in pursuit of the nature and varieties of human error. In it he presents an engrossing and very personal perspective, offering the reader exceptional insights, wisdom and wit as only James Reason can. The journey begins with a bizarre absent-minded action slip committed by Professor Reason in the early 1970s - putting cat food into the teapot - and continues up to the present day, conveying his ...

Situations and systems are easier to change than the human condition - particularly when people are well-trained and well-motivated, as they usually are in maintenance organisations. This is a down-to-earth practitioner’s guide to managing maintenance error, written in Dr. Reason’s highly readable style. It deals with human risks generally and the special human performance problems arising in maintenance, as well as providing an engineer’s guide for their understanding and the solution. Af...

The authors believe that a systematic organizational approach to aviation safety must replace the piecemeal approaches largely favoured in the past, but this change needs to be preceded by information to explain why a new approach is necessary. Accident records show a flattening of the safety curve since the early Seventies: instead of new kinds of accident, similar safety deficiencies have become recurrent features in accident reports. This suggests the need to review traditional accident...

When faced with a ’human error’ problem, you may be tempted to ask 'Why didn’t these people watch out better?' Or, 'How can I get my people more engaged in safety?' You might think you can solve your safety problems by telling your people to be more careful, by reprimanding the miscreants, by issuing a new rule or procedure and demanding compliance. These are all expressions of 'The Bad Apple Theory' where you believe your system is basically safe if it were not for those few unreliable pe...

Safety-I is defined as the freedom from unacceptable harm. The purpose of traditional safety management is therefore to find ways to ensure this ‘freedom’. But as socio-technical systems steadily have become larger and less tractable, this has become harder to do. Resilience engineering pointed out from the very beginning that resilient performance - an organisation’s ability to function as required under expected and unexpected conditions alike – required more than the prevention of incid...

For Resilience Engineering, 'failure' is the result of the adaptations necessary to cope with the complexity of the real world, rather than a breakdown or malfunction. The performance of individuals and organizations must continually adjust to current conditions and, because resources and time are finite, such adjustments are always approximate. This definitive new book explores this groundbreaking new development in safety and risk management, where 'success' is based on the ability of or...

Human error is cited over and over as a cause of incidents and accidents. The result is a widespread perception of a 'human error problem', and solutions are thought to lie in changing the people or their role in the system. For example, we should reduce the human role with more automation, or regiment human behavior by stricter monitoring, rules or procedures. But in practice, things have proved not to be this simple. The label 'human error' is prejudicial and hides much more than it reve...

If human error only starts to explain how accidents happen in complex, adaptive systems, what does the rest of the explanation look like? And what can be done as a result? If complex systems are fundamentally different from merely complicated ones, what does this mean for us – the people who have to live and work in them?Through a re-analysis of real events, this book integrates recent thinking from psychology, resilience engineering, complexity theory and cybernetics.Intimidated? Don’t be...