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A New Quantification Strategy for HEP of CREAM in the Fueling Processes of Aircraft Launch Operations

The cognitive reliability and error analysis method (CREAM) has been viewed as the representative method for the second-generation human reliability analysis (HRA) method and the main focus of this methods is to make accurate quantification on human errors. Despite the series efforts have been made to improve the quantification processes in CREAM, the individual difference characteristics that rooted in the operators' performance have been ignored. Actually, in highly stressful task context such as the crucial operations in aircraft launch, such differences can have significant impact on the operators' performance. This apparent limit may lead to the inaccuracies in the final quantification result of the human error probability (HEP). To further modify the existing CREAM method, this paper incorporates the physiological conditions of operators into the quantification and propose a new definition for the nominal HEP0. In addition, a simulation experiment of the fueling process in aircraft launch has been conducted and the experiments results have proved the validity and flexibility in this new quantification strategy.