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A systems approach to risk management through leading safety indicators

Author(s)
Leveson, Nancy G
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Abstract
The goal of leading indicators for safety is to identify the potential for an accident before it occurs. Past efforts have focused on identifying general leading indicators, such as maintenance backlog, that apply widely in an industry or even across industries. Other recommendations produce more system-specific leading indicators, but start from system hazard analysis and thus are limited by the causes considered by the traditional hazard analysis techniques. Most rely on quantitative metrics, often based on probabilistic risk assessments. This paper describes a new and different approach to identifying system-specific leading indicators and provides guidance in designing a risk management structure to generate, monitor and use the results. The approach is based on the STAMP (System-Theoretic Accident Model and Processes) model of accident causation and tools that have been designed to build on that model. STAMP extends current accident causality to include more complex causes than simply component failures and chains of failure events or deviations from operational expectations. It incorporates basic principles of systems thinking and is based on systems theory rather than traditional reliability theory.
Date issued
2014-10
URI
http://hdl.handle.net/1721.1/108601
Department
Massachusetts Institute of Technology. Department of Aeronautics and Astronautics
Journal
Reliability Engineering & System Safety
Citation
Leveson, Nancy. “A Systems Approach to Risk Management through Leading Safety Indicators.” Reliability Engineering & System Safety 136 (April 2015): 17–34. © 2014 Elsevier Ltd
Version: Author's final manuscript
ISSN
0951-8320

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