Risk analysis evolving practices

Where does this thinking differently take them A thought process evolves whereby, when a risk situation arises, they pose questions concerning the system, rather than focusing on the behavior of individuals. That leads to a more reahstic identification and analysis of hazards, which is vital to successful safety practice. 

Part I introduces the reader to the system safety process, how it evolved, how it can be managed, and how it relates to the current practice of the industrial safety and health profession. In fact, on completion of Part I, the reader shall have developed a clear understanding of this relationship and, quite possibly, have developed an interest in the further pursuit of the system safety profession. As noted in the Preface, the information provided here is introductory in scope, intended to merely acquaint the reader with the system safety approach to hazard analysis and hazard risk reduction. 

In the past, safety engineering has been applied to build dependable systems out of less reliable components. A multitude of practical techniques such as fault masking, error detection, fault diagnosis, and recovery have evolved to improve the reliability of safety-critical system. Since the operations of these systems also depends on software and communicated information, malicious attacks to information security must be considered and appropriately addressed. Commonly, the focus of security can be described by the Confidentiality, Integrity, and Availability (CIA) model. A safety analysis needs to include security risks, determined by vulnerability, threat, and impact with respect to the CIA model. 

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