TY - JOUR T1 - Evaluation of the Possibility of Human Error in the Operation of Tower Cranes Using Success Likelihood Index TT - ارزیابی احتمال خطای انسانی در راهبری جرثقیل‌های برجی با استفاده از روش شاخص احتمال موفقیت JF - umsha-johe JO - umsha-johe VL - 7 IS - 2 UR - http://johe.umsha.ac.ir/article-1-589-en.html Y1 - 2020 SP - 54 EP - 61 KW - Construction KW - Human Error Probability Assessment KW - Loading Operations KW - Success Probability Index KW - Tower Cranes N2 - Background and Objective: Human error is the most common cause of accidents involving operating cranes in the construction industry. Operator errors are caused by various factors during crane loading operations. Success Likelihood Index Model (SLIM) is used as a simple and effective way to assess the probability of human error. Materials and Methods: In this study, the SLIM method was used to evaluate and manage the possibility of human error in loading operations by tower cranes. After forming the expert team, the factors influencing the errors in the operation of the cranes were identified in this study. Subsequently, the rate and weight of these factors were determined, and the probability of human error was calculated for each error using the total SLI. Results: Initially, six effective Performance Shaping Factors (PSF) influencing the operation of the tower cranes were determined by experts. Out of the identified PSFs, training obtained the greatest impact on the likelihood of human error. By calculating the probability of human error based on the calculated SLIs, it was found that the errors of obstacle collisions (1.70×10-02), contact with power lines (1.69×10-02), and overturns (1.62×10-02) obtained the highest Human Error Probability in descending order. Conclusion: The results of this study showed that the highest probability of human error in crane loading operations is related to obstacle collisions. Moreover, the most effective PSFs in creating errors are training, conditions, tools, and experience. Therefore, the reliability and overall safety of the loading operations can be increased by planning and holding continuous training courses, updating instructions, and appointing highly experienced people as crane operators. M3 10.52547/johe.7.2.54 ER -