Background:The number of occupational safety incidents has been a major concern in
terms of human, economic, and legal considerations. Risk assessment is a logical
method for the assessment of risks, which specifies risks and their potential implications
for individuals, materials, equipment, and the environment. This study aims to identify
both risks and risk assessment methods at a highway construction site using the FMEA
method and by drawing safety contour maps, making use of ArcGIS 10.2.
Materials and Methods: This study was conducted in 9 general steps, including 1.
Reviewing demographic data, 2. Identifying human risks, 3. Identifying risk causes, 4.
Identifying risk effects, 5. Determining the severity and occurrence of risks, 6. Rating
risks, 7. Controlling risks, 8. Entering the coordinates and RPNs of occupations for each
location in ArcGIS, and 9. Drawing safety contour maps using ArcGIS 10.2. The mean
and standard deviation of the data were reported using SPSS Statistics V 22.0.
Results: At the site of this study, 62.97% of the units had moderate risks, and the rest
had low risks (37.03%). The highest RPNs were for light machines and asphalt rollers
with the values of 42.91 and 41.3, respectively. In contrast, the lowest RPNs were
obtained for the laboratory and the water supply plant.
Conclusions: Most of the site units had moderate risks, so it is expected that the risk of
the units would be minimized by implementing the recommendations.
