Penilaian Risiko dan Perencanaan Inspeksi Pada Pipe Line TGA01 0.050 - TGA01 0.075

  • Ahmad Ali Aziz Sudarmaji Politeknik Perkapalan Negeri Surabaya
  • Raden Dimas Endro Witjonarko Politeknik Perkapalan Negeri Surabaya
  • Rina Sandora Politeknik Perkapalan Negeri Surabaya
Keywords: Remaining Lifetime, Probability of Failure, Consequence of Failure, Inspection, Risk Matrix, Monte Carlo


Exploration and processing of oil and gas companies have a plan to add lines inthe flowline
using the tie-in method. When cutting pipes, found the existence of corrosionon the surface in the
pipe. So, in this study analyzes the magnitude of the corrosion rate,remaining lifetime, risk level of
buried flowline, and inspection planning. From the manualcalculation, the largest corrosion rate is
0.4194 mm/year in the 180⁰ direction while frommodeling using ANSYS software, the largest
corrosion rate is 0.3023 mm/year in the 180⁰direction. The remaining lifetime is 2.2 years with
manual calculations and 3.03 years using ANSYS software modeling. Meanwhile based on hoop
stress calculation, the remaining lifetime is 11.6 years in theoretical calculation and 11.4 years in
ANSYS software modeling. The highest risk level occurs in the flowline between 2015 and 2032,
with the highest risk score in the damage cost to surrounding equipment in affected areafactor which
is in the very high category.