Risk Assessment of Subsea pipeline using standard DNVGL-RP-F107

Abstract

To avoid fuel scarcity, exploitation activities must be carried out to meet the needs of oil in Indonesia. In the process of oil exploitation, facilities are needed to carry out a fluid transfer system from one place to another. One way to carry out the process of fluid transfer at an offshore location is the use of an underwater piping system. However, in the transfer of fluid from one place to another there is a danger that can cause failures in the pipeline system. For example, if an underwater gas pipeline is in the shipping lanes, international and national vessels, there is a possibility of danger that could occur due to a third party. In making this thesis the risk assessment is assessed using the DNVGL-RP-F107 standard. Based on the DNVGL-RP-F107 standard, hazards that may occur in underwater gas pipelines are hazards caused by falling or dropped anchors, anchored dragged pipes and destroyed ship (ship sinking). In risk assessment using the DNVGL-RP-F107 standard, the consequence analysis conducted refers to the damage to the subsea pipeline. After getting the analysis results from the index values that have been made, proceed with making a risk representation using the Risk Matrix. Pipelines that have been evaluated and representations in the risk matrix are in the ALARP zone (as low as reasonably practical) and in acceptable zone.

Risk assessment on offshore pipes

“…Added mass associated (Rfa) of 0.92, impact load calculation is indicated in Table 10. 2 5.629277 KJ The next step is to determine the hydrodynamic mass (Fb) for the impact force, using equations can be used:…”

“…Pipelines are the most frequently failed parts of oil production installations. This is because the pipeline is the largest piece of equipment, so compared to other equipment, the probability of failure is higher [2].…”

Risk Assessment pada Jaringan Pipa Bawah Laut di PT. XYZ (Studi Kasus: 32” MGL-NGLB CILAMAYA)

“…Pipeline adalah bagian instalasi produksi minyak yang paling sering mengalami kegagalan. Hal ini karena pipeline adalah bagian terbesar dari peralatan, sehingga dibandingkan dengan peralatan lain, kemungkinan kegagalan lebih tinggi [2].…”

Risk Assessment of Subsea Power Cables in South Sumatera Province Waters

“…The impact area and drag coefficient have the highest sensitivity and mass, and the additional mass coefficient has the lowest sensitivity on the probability of failure [8]. Calculating the probability and depth of penetration of the anchor deployment near the submarine cable is studied.…”