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Latent failures span the first three domains of failure in Reason's model. [ 9 ] In the early days of the Swiss cheese model, late 1980 to about 1992, attempts were made to combine two theories: James Reason's multi-layer defence model and Willem Albert Wagenaar's tripod theory of accident causation .
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1. The first stage of the process is to identify the full range of sub-tasks that a system operator would be required to complete within a given task.
Failure mode and effects analysis (FMEA; often written with "failure modes" in plural) is the process of reviewing as many components, assemblies, and subsystems as possible to identify potential failure modes in a system and their causes and effects. For each component, the failure modes and their resulting effects on the rest of the system ...
The Human Factors Analysis and Classification System (HFACS) identifies the human causes of an accident and offers tools for analysis as a way to plan preventive training. [1]
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A particular matter in Revision B, which was the topic of a Notice of Proposed Rulemaking [28] completed in June 2024, [29] is the failure condition designated as Catastrophic Single Latent Failure Plus One (CSL+1).
THERP is a first-generation methodology, which means that its procedures follow the way conventional reliability analysis models a machine. [3] The technique was developed in the Sandia Laboratories for the US Nuclear Regulatory Commission. [4]