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A conceptual model for the analysis of mishaps in human-operated safety-critical systems

Hall, Jon G. and Silva, Andrés (2008). A conceptual model for the analysis of mishaps in human-operated safety-critical systems. Safety Science, 46(1) pp. 22–37.

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In this paper we provide a conceptual model useful for describing the cyclic interactions of a computer system with its environment and with the humans operating it. Furthermore, it describes how undesirable events introduced at operation time and/or at design time can interact, possibly leading to catastrophic consequences. The model provides a basis for the proper design and analysis of safety-critical systems with human and computer-based components. The model is derived from the requirements engineering reference model of Zave and Jackson by the addition of behavioural dynamics, the inclusion of an operator and feedback. The model looks far beyond individual failures and considers problems not as the chaining of events but as the chaining of deviations from design, from operation and from their interaction. Our goal is a model through which analyses that transcend the traditional reductionist approach in event-chain models can be conducted.

Item Type: Journal Article
ISSN: 0925-7535
Keywords: Software safety; HCI; Control; Accident models; Hazard analysis; Risk analysis; Human factors
Academic Unit/Department: Mathematics, Computing and Technology > Computing & Communications
Mathematics, Computing and Technology
Interdisciplinary Research Centre: Centre for Research in Computing (CRC)
Item ID: 7757
Depositing User: Jon Hall
Date Deposited: 30 May 2007
Last Modified: 14 Jan 2016 16:32
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