A Simulator for Human Error Probability Analysis (SHERPA)

Valentina Di Pasquale, Salvatore Miranda, Raffaele Iannone and Stefano Riemma

Reliability Engineering and System Safety, 2015, vol. 139, issue C, 17-32

Abstract: A new Human Reliability Analysis (HRA) method is presented in this paper. The Simulator for Human Error Probability Analysis (SHERPA) model provides a theoretical framework that exploits the advantages of the simulation tools and the traditional HRA methods in order to model human behaviour and to predict the error probability for a given scenario in every kind of industrial system. Human reliability is estimated as function of the performed task, the Performance Shaping Factors (PSF) and the time worked, with the purpose of considering how reliability depends not only on the task and working context, but also on the time that the operator has already spent on the work. The model is able to estimate human reliability; to assess the effects due to different human reliability levels through evaluation of tasks performed more or less correctly; and to assess the impact of context via PSFs. SHERPA also provides the possibility of determining the optimal configuration of breaks. Through a methodology that uses assessments of an economic nature, it allows identification of the conditions required for the suspension of work in the shift for the operator׳s psychophysical recovery and then for the restoration of acceptable values of reliability.

Keywords: Modelling; Simulation; Human Reliability Analysis; Human error probability; Performance shaping factor (search for similar items in EconPapers)
Date: 2015
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (15)

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Persistent link: https://EconPapers.repec.org/RePEc:eee:reensy:v:139:y:2015:i:c:p:17-32

DOI: 10.1016/j.ress.2015.02.003

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