Extension of TACOM to the complexity of tasks designed for abnormal situations in nuclear power plants

Article


Ham, D., Park, J. and Jung, W. 2011. Extension of TACOM to the complexity of tasks designed for abnormal situations in nuclear power plants. Journal of Loss Prevention in the Process Industries. 24 (5), pp. 601-611. https://doi.org/10.1016/j.jlp.2011.04.006
TypeArticle
TitleExtension of TACOM to the complexity of tasks designed for abnormal situations in nuclear power plants
AuthorsHam, D., Park, J. and Jung, W.
Abstract

TACOM (TAsk COMplexity) is a measure for evaluating the complexity of tasks prescribed for emergency situations in nuclear power plants. Five sub-measures constituting TACOM represent five different aspects of the task complexity exhibited in operating procedures for emergency situations. The practicality of TACOM has been verified through a series of empirical studies. However, tasks designed for abnormal situations that can significantly affect the safety of nuclear power plants, also need a proper measure for evaluating their complexity. TACOM provides a process, a systematic cognitive task analysis method and a set of guidelines to support its application. Therefore, although the characteristics of abnormal task situations are not the same as those of emergency situations, TACOM seems to be reasonably applied to abnormal situations or at least to offer meaningful insights for developing a measure for evaluating the complexity of tasks in abnormal situations. Thus this study examined the applicability of TACOM to abnormal situations through case studies. Particular attention was paid to the sufficiency and appropriateness of the three methodological tools, which are the process, the cognitive task analysis method and the set of guidelines. Collective consideration of the case studies and the characteristics of tasks prescribed for abnormal situations led us to draw the conclusion that TACOM could be reliably used for abnormal situations as well. This paper reports the process of how to apply TACOM to the tasks of abnormal situations and discusses some lessons learned through this application.

KeywordsOperating procedures; Procedure-based tasks; Task complexity; Abnormal operating procedures; Human-machine interfaces; Nuclear safety
Sustainable Development Goals9 Industry, innovation and infrastructure
Middlesex University ThemeSustainability
PublisherElsevier
JournalJournal of Loss Prevention in the Process Industries
ISSN0950-4230
Electronic1873-3352
Publication dates
Online30 Apr 2011
PrintSep 2011
Publication process dates
Submitted30 Dec 2010
Accepted26 Apr 2011
Deposited18 Sep 2024
Output statusPublished
Digital Object Identifier (DOI)https://doi.org/10.1016/j.jlp.2011.04.006
Web of Science identifierWOS:000294877100011
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