STATIC DAN DYNAMIC ANALYSIS OF FREESPANNING SUBSEA PIPELINES ON 14 INCH PIPE AT HANGTUAH AREA

• Main Author: ZAINUD AIRLANGGA (NIM : 13104144); Pembimbing : Prof. Dr. Ir. IGN Wiratmaja Puja, ADITYA
• Format: Final Project
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/14658
• Institution: Institut Teknologi Bandung

Subsea Pipeline is a transportation unit that is used to transmit the world main energy source, i.e. oil and gas. Freespanning is an unsupported section of a pipeline. Many of the world’s subsea pipeline simply laid on the seabed. Hence, subsea pipelines can undergo freespanning. Subsea pipelines are analyzed to determine the dynamic span length for avoiding VIV and static span length to know when yielding is happening on a pipeline freespan. <br /> <br /> <br /> The objectives of this final project is to determine dynamic and static span length based on DNV RP-F105 and DNV OS-F101 respectively. Case study of this final project is the freespanning in Hangtuah area, Natuna Sea. Case study analysis was done with the help of Microsoft Office Excel 2007 calculation sheet. <br /> <br /> <br /> The analysis of pipeline in Hangtuah area results dynamic and static span length, i.e 16 m and 28 m at 14 inch pipeline from Hangtuah Platform to Keong MK1. There are 20 spans whose length is longer than dynamic criteria. The amount of span whose length is longer than static span length is four spans. It is needed to intervent span on pipeline whose length is more that each criteria.