Application of the Analytic Hierarchy Process (AHP) in Risk Assessment of Steam Pipeline Installation Procedures
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Abstract
Steam pipeline installation processes consist of various activities, each with hidden dangers and different levels of risk to workers. This research aimed to systematically assess the risks of such processes to enable effective planning for accident control and prevention. The Analytic Hierarchy Process (AHP) was applied as a decision-making framework, starting with studying work procedures and work permit documents from case study projects to analyze and classify the main steps of the steam pipeline installation process and identify potential hazards. The risk assessment aimed to find the work steps with the highest risk using three decision criteria: the probability of hazard occurrence, the severity of hazards, and the costs of prevention. A pairwise comparison risk assessment questionnaire was then prepared for five steam pipeline installation experts to evaluate the risk levels under each criterion. The data analysis results showed that elevated pipe lifting and assembly was the step with the highest risk, with a total weighted value of 0.259 followed by radiographic testing (0.143), pipe welding (0.129), thermal insulation (0.101), nitrogen gas filling into the pipeline (0.097), ground-level pipe lifting and assembly (0.095), pipe transportation (0.092), and pressure testing and pipe cleaning (0.085). The findings of this research can serve as a guideline for prioritizing risk control measures to increase safety for future steam pipeline installation projects.
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References
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