en Occupational Health Original Article <p style="text-align: justify;"><span style="font-family: times new roman;"><strong>Background:</strong> One of the challenges in construction is the occurrence of numerous accidents. In this regard, risk assessment can play an important role in reducing accidents. The aim of this study was to prepare comprehensive and quantitative checklists to determine the potential hazards in the construction phase.</span></p> <p style="text-align: justify;"><span style="font-family: times new roman;"><strong>Materials and Methods:</strong> The present descriptive and analytical study was carried out on petrochemical projects in the south of Iran in 2014. After the inspection of more than 50 construction projects, two types of technical and managerial checklists were designed. The managerial and technical checklists were designed with seven and 32 major subjects, respectively. Finally prepared checklist and ET&BA method were compared in term of their risk identification capability.</span></p> <p style="text-align: justify;"><span style="font-family: times new roman;"><strong>Results:</strong> The checklist and ET&BA methods, respectively, identified 300, 75, 125, and 48, and 107, 25, 12, and 0 risks related to hardware, design, mismanagement, and human error.</span></p> <p style="text-align: justify;"><span style="font-family: times new roman;"><strong>Conclusions: </strong>The checklist method can identify and assess human errors, while the ET&BA method cannot. Moreover, this method was more efficient than the ET&BA technique in identification and assessment of hardware-related, design-related, and managerial risks. Moreover, the duration and cost of implementation of checklist method were significantly lower than ET&BA method. This technique can be introduced as a quantitative risk assessment method in construction phases of projects and its weaknesses can be improved by future studies.</span></p> Accidents, Checklist, Construction, Risk Assessment 1 9 http://johe.rums.ac.ir/browse.php?a_code=A-10-166-2&slc_lang=en&sid=1 A Zaranejad zaranejad@gmail.com 22400319475328460011743 22400319475328460011743 No Dept. of Occupational Engineering, Faculty of Medical Sciences, Tarbiat Modares University, Tehran, Iran. Tarbiat Modares University O Ahmadi o.ahmadi@modares.ac.ir 22400319475328460011744 22400319475328460011744 Yes Dept. of Occupational Engineering, Faculty of Medical Sciences, Tarbiat Modares University, Tehran, Iran. Tarbiat Modares University E Yahyaei o.ahmadi@modares.ac.ir 22400319475328460011745 22400319475328460011745 No Dept. of Occupational Engineering, Faculty of Medical Sciences, Tarbiat Modares University, Tehran, Iran. Tarbiat Modares University