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This paper discusses how human factors can be included in a probabilistic safety study. During incidents, the effect of the plant dynamic evolution and component failure can lead to non-intuitive configuration of the system and, when the interaction of the operator and the control and protection system is taken into account, the overall scenario of the safety study becomes particularly complex. These problems demand the use of a dynamic reliability methodology technique and the development of an appropriate model of human behaviour to be coupled to a taxonomy of erroneous actions. These were carried out by the DYLAM approach and by a number of modelling architectures of operator simulation, which were coupled for the development of a dynamic methodology for human factors analysis. A simple application is illustrated by the study of the control of an auxiliary feedwater system during incidental conditions.

Additional information

Authors: CACCIABUE P C, JRC Ispra (IT);COJAZZI G, JRC Ispra (IT)
Bibliographic Reference: Paper presented: SMIRT 12 Post-Conference Seminar No. 15 on Current Issues in PSA, Heidelberg (DE), August 23-24, 1993
Availability: Available from (1) as Paper EN 37778 ORA
Record Number: 199311572 / Last updated on: 1994-11-28
Original language: en
Available languages: en
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