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Abstract
Indonesia is a country that has an important role in the oil and gas industry. Considering this important role, it is necessary to conduct an inspection and safety inspection to support the sustainability of the oil and gas industry in Indonesia.. In this study the method used is the processing of side scan sonar (SSS) and dual-head scanning profiler (DHSP) data obtained from PT. Pageo Utama. Side scan sonar data is used as a visual representation of the pipeline while dual-head scanning profiler data is used to obtain the topography of the sea and surrounding pipes to identify the dimensions of the free span. The result of this study shows 47 free spans from a 6.8 km underwater pipeline. Free span with the longest dimension is FS-43, with length of 42.109 m and height of 0.44 m, which is located at KP 6.045. Free Span with the highest dimension is FS-45, with height of 1.22 m and length of 20.329 m, which is located at KP 6.465.
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