Author/Authors :
daneshvar, mohammad Industrial Safety Engineering Department -Tabnak University, Lamerd, Fars, Iran , soltanzadeh, ahmad Department of Occupational Safety & Health Engineering - Faculty of Health - Research Center for Environmental Pollutants - Qom University of Medical Sciences, Qom, Iran , mohammadi, heidar Power Plant Commissioning Manager - Operation & Maintenance Co - (O&M), MAPNA group, Iran
Abstract :
Large construction projects are always at high risk, so the safety of these projects would be of utmost importance.
Analysis of risk resources and safety risk is one of the important activities to prioritize the existing risks as well as
managing them in the process of building a power plant as one of the most at-risk industries in terms of safety
issues. The purpose of this study was to analyze the safety risks existing in the construction phase of a power plant
based on the Bow-tie technique. This cross-sectional analytical study was carried out in 2017 at the house power of
a combined cycle power plant. Safety analysis of the risks was performed based on the Bow-tie technique using the
Bow Tie ProTM software. For the more effectiveness of this study, two phases, including system descriptions and
identification of the risk sources were designed and implemented before the risk analysis steps, and prior to
identifying the path of each branch of the Bow-tie chart (from consequence to event occurrence). The results
showed that the highest level of threats is related to “pressure cylinders”, “welding”, and “cutting” (including 8
threats of mechanical damage, heat, transportation, unsafe connections, cylinders storage, oil and grease, leakage,
and flame retardation). In addition, the most significant consequences were related to heavy loading (including 3
consequences of human injury, damage to cranes, and damage to facilities and equipment), pressure cylinders,
welding, and cutting (including 3 consequences of human injury, fire and explosion, and damage to facilities and
equipment). The findings indicated that Bow Tie ProTM software would be a suitable tool in analyzing the safety
risks of large projects, such as the construction of power plants that involves considering preventive and limiting
safety measures for prevention or mitigation of threats as well as controlling the safety implications of the
construction activities.
Keywords :
Safety , Risk analysis , Bow-tie technique , Power plant
