Tehran University of Medical Sciences International Journal of Occupational Hygiene 2008-5109 8 2 2017 01 04 100 109 EN AZIN SHAMAII PhD student in Department of Environmental Management, Science and Research Branch, Islamic Azad University, Tehran, Iran MAMOUCHEHR OMIDVARI Associated professor of Safety industrial Engineering Department, Industrial and Mechanical Engineering Faculty, Islamic Azad University, Qazvin Branch,Qazvin, Iran FARHAD HOSSEINZADEH LOTFI Department of Mathematics, Science and Research Campus of Tehran, Iran 2016 06 27 2016 12 18 Organizations and companies have realized that HSE management is an integral and vital part of modern factories and organizations. Developing HSE processes requires performance assessment, for which defining appropriate indicators is a necessity. As a result of the non-deterministic nature of performance indicators, assessments are prone to influence from the personal judgments by the evaluators. This study aims to present a performance assessment model for HSE in fuzzy environments in the smelting industry. A questionnaire is used to conduct the study in one of the biggest steel production units in Iran. The results revealed that, in the areas of health, safety, and environment, control of disease, fire hazards, and air pollution are of paramount importance, with coefficients of 0.057, 0.062, and 0.054, respectively. Furthermore, health and environment indicators were found to be the most common causes of poor performance. Finally, it was shown that HSE management systems can affect the majority of performance safety indicators the short run, whereas health and environment indicators require longer periods of time. https://ijoh.tums.ac.ir/index.php/ijoh/article/view/199 https://ijoh.tums.ac.ir/index.php/ijoh/article/download/199/272