Untitled - Teknik Kelautan / ITB
Untitled - Teknik Kelautan / ITB
Untitled - Teknik Kelautan / ITB
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Reliability Assessment of Offshore Pipeline Subjected Corrosion<br />
Ivindra Pane 1 & Andreas Nugroho Jati 1<br />
1 Institut Teknologi Bandung, Ganesha 10, Bandung, Indonesia<br />
Email: ivpane@si.itb.ac.id<br />
Abstract. As corrosion condition is an essential design consideration, reliability<br />
analysis is performed for offshore pipeline subjected to corrosion. Two design<br />
requirements namely B31G and Shell 92 are applied together with some corrosion<br />
loss models. Prior to performing the reliability analysis some corrosion models are<br />
reviewed and some selection process has been done to narrow down some models<br />
that are to be used further. A notable model is the one by Qin & Cui which can<br />
predict time varying rate of corrosion realistically. FORM reliability analysis is<br />
performed for pipeline having random design paramaters. The result provides<br />
interesting insight on how pipeline reliability index varies with time for different<br />
corrosion loss models. FORM reliability analysis allows to design pipeline subjected<br />
to corrosion for a given service period with known reliability level.<br />
Keywords: corrosion, design, FORM, offshore, pipeline, pressure, reliability.<br />
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