The one activity that dominates the design, construction, commissioning, operation, and ultimately decommissioning of all nuclear facilities is their safety case: yet for all its importance, the development of a safety case is quite a nebulous activity that can be difficult to comprehend. This chapter guides readers, step by step, through the whole process, beginning with the formal hazard analysis studies of initial hazard appraisal (HAZAP), leading on to hazard and operability studies (HAZOPs) and hazard analysis (HAZAN). This is followed by a description of the role played by an engineering schedule. The chapter’s discussion on risk covers topics such as the hazard control hierarchy, fault sequence analysis, probabilistic ...
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