Abstract
Model of Human Error Probability based on dual-phase approach for learning process in cognitive-oriented tasks
Highlights
The Human Error Probability (HEP) is a key element in system accidents and disasters, especially in high-risk fields, such as industrial plants, nuclear plants, and aerospace
According to Calixto et al (2013), the Human Reliability Assessment (HRA) methods can be classified in three main groups: the first (1970-1990) is known as the first human reliability methods generation, which focuses on human error probabilities and operational human errors, by considering the worker like a mechanical component [12]
In most of these methods, such as Technique for Human Error Rate Prediction (THERP), Human Error Assessment and Reduction Technique (HEART), and Human Cognition Reliability (HCR), the HEP is evaluated on the basis of the characteristics of the task assigned to the operator, and its value is obtained in accordance with the Performance Shaping Factors (PSF), quantifying the impact on the human performance of environmental factors [13]
Summary
New accidents or incidents due to human error do not “just happen” and in most of the cases the cause relies on human incompetence or negligence [1]. The first category includes the so-called “slips or lapses” errors: they are considered “actions that were not as planned” or unintended actions These kinds of errors occur during the completion of a familiar task and include slips (e.g. pressing the wrong button or reading the wrong gauge) and lapses (e.g. forgetting to carry out a step in a known procedure). The second category of errors includes the errors of judgement or decision-making, so-called “mistakes” They occur when the worker accomplishes the wrong action believing it to be right. External factors affecting the human reliability include all aspects related to the typology of the tasks carried out (e.g. procedures, load and task complexity, etc.) as well as the work environment characteristics (e.g. ergonomics, work organization, etc.) [11]. Traditional HRA methods are based on different approaches applicable in different industrial tasks, according to the typology of tasks to be performed (physical or cognitive oriented), level of tasks-complexity, operator capabilities as well as workplace conditions
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