خلاصة:
Objectives: This study aimed to evaluate and analyze the ergonomic behaviors order to select the best work shift group in an Iranian petrochemical Company, in 2010.
Methods: The methodology was based on the Ergonomic Behavior Sampling (EBS), and performed using ELECTRE method. In this study 1147 behaviors were observed.
Results: The results indicated that 43.6% of workers’ behaviors were unergonomic. The most frequent unergonomic behavior was amusing of legs while load lifting with 83.01% of total unergonomic behaviors observations. Using ELECTRE method, most effective shift group and least attractive alternatives for intervention were selected in the company.
Discussion: Findings declare high number of unergonomic behaviors. Catastrophic consequences of accidents in petrochemical industry necessitate paying more attention to workers’ ergonomic behaviors in the workplace.
ملخص الجهاز:
Ergonomic Behaviors Analysis in an Iranian Petrochemical Company Using The ELECTRE Method Mohammad Khandan, MSc; Maryam Maghsoudipour*, MD Department of Ergonomics, University of Social Welfare and Rehabilitation Sciences, Tehran, Iran Shahram Vosoughi, MSc Department of Health Sciences, Faculty of Health, Safety and Environment, Shahid Beheshti Medical Science University, Tehran, Iran Objectives: This study aimed to evaluate and analyze the ergonomic behaviors order to select the best work shift group in an Iranian petrochemical Company, in 2010.
Furthermore, the relationships between Ergonomic Behavior and employees' demographic characteristics such as age, education, job experiences, number of trainings and marriage status were examined by statistical analysis tests of t-test, ANOVA and Pearson correlation.
Ergonomic Behavior Checklist Behavior Ergonomic Unergonomic notices Proper carrying Load weight Load closed to body while carrying Proper grip of load while carrying Carrying from appropriate path Symmetric carrying Distance of carrying (4 meters) Proper lifting load weight Move feet - don't twist while lifting Proper grip of load while lifting Load closed to body while lifting Use of legs while lifting Upper arm posture Leg posture Trunk posture Lower arm posture Wrist posture Neck posture Conducting Pilot Study After specifying the unergonomic behaviors, a special number of necessary observations of workers' behaviors were carried out in order to determine the proportion of their unergonomic behaviors.
Results Based on Applying ELECTRE Method In this study 17 ergonomic behaviors (n=17) in five shift work groups (m=5) were assessed.
Table 5 shows decision making matrix which contains ergonomic behaviors frequencies for each work shift group.