Work

Empirical estimation of human error probabilities based on the complexity of proceduralized tasks in an analog environment

Year: 2021

Type: article

Abstract: The contribution of degraded human performance (e.g., human errors) is significant for the safety of diverse social-technical systems. Therefore, it is crucial to understand when and why the performance of human operators could be degraded. In this study, the occurrence probability of human errors was empirically estimated based on the complexity of proceduralized tasks. To this end, Logistic regression analysis was conducted to correlate TACOM (Task Complexity) scores with human errors collected from the full-scope training simulator of nuclear power plants equipped with analog devices (analog environment). As a result, it was observed that the occurrence probability of both errors of commission and errors of omission can be soundly estimated by TACOM scores. Since the effect of diverse performance influencing factors on the occurrence probabilities of human errors could be soundly distinguished by TACOM scores, it is also expected that TACOM scores can be used as a tool to explain when and why the performance of human operators starts to be degraded.

Source: Nuclear Engineering and Technology

DOI: 10.1016/j.net.2021.12.025

Authors: Jinkyun Park, Hee Eun Kim, Inseok Jang

Institution: Korea Atomic Energy Research Institute

Language: English

Topic: Risk and Safety Analysis

Subfield: Statistics, Probability and Uncertainty

Field: Decision Sciences

Domain: Social Sciences

Open Access status: gold

Estimated APC paid: $200

Funders: Ministry of Science, ICT and Future Planning, Nuclear Safety and Security Commission, National Research Foundation of Korea, Ministry of Science and ICT, South Korea