The method of identifying and eva‎luating human errors looks for the factors that lead to the occurrence of human errors or accidents in the organization, so that it can be prevented from repeating them by adopting and implementing appropriate methods or take steps to control and reduce these errors. Although the use of the approach of identifying and eva‎luating human errors is not a new topic and there are many studies in this field in different fields, but the existing researches by using quantitative and qualitative models separately only deal with specific examples of the topic of identifying and eva‎luating human errors and the lack of The combined method of the existing methods is suitable for the variable goals of the organization in Iran's oil and gas industry. The purpose of this research is to develop a solution and a model that can be used to identify and eva‎luate human errors in a systematic way for the changing goals of the organization. Therefore, an attempt was made to create a model by combining the quantitative and qualitative methods of the models that have been used in the oil and gas industry so far, which in addition to identifying human errors, the possibility of weighting tasks and then determining the reliability of people Based on the factors affecting performance. Also, with the help of the new model, it is possible to determine the root causes of errors, the probability of consecutive errors and the probability of human error. For this purpose, the proposed model was obtained by combining the types of models that were used in the oil and gas industries, and the steps that were superior in each method over other methods were determined, finally by putting these steps together, the general steps of the integrated method obtained, whose structure is presented in the form of a flowchart. Finally, reliability concepts are used to determine the reliability of each process and operation. System reliability in this thesis means a system that includes only human interactions and only pays attention to human processes. In fact, the use of the concept of system reliability shows where the organization currently stands in terms of safety during the implementation of its processes, and how this position changes after identifying and managing human errors. For this reason, it is very important to determine the reliability of the system, which has not been investigated in previous studies on the topic of identifying and measuring human errors in Iran's oil and gas industry. It should be noted that the method of collecting information in this research was the study of previous documents of the technical inspection department, interviews with experts and completion of questionnaires. Also, in order to eva‎luate the proposed model and show how it works, this model was implemented in the technical inspection department of Isfahan Gas Company, and its results were determined, and its efficiency was approved and satisfied by the officials of the technical inspection department. Finally, in order to ensure the validity of the model, a comparison was made between the results of the model implementation and the results of the previous models.

بهروز ارباب شيراني

محسن شهرياري , ناصر ملاوردي اصفهاني