Static Analysis Of Stresses In Offshore Pipeline During Installation Using S-Lay Method, Case Study: Pipeline Owned By PT. Trans Pacific Petrochemical Indotama Tuban

Furqan, Nazwar (2016) Static Analysis Of Stresses In Offshore Pipeline During Installation Using S-Lay Method, Case Study: Pipeline Owned By PT. Trans Pacific Petrochemical Indotama Tuban. Undergraduate thesis, Institut Technology Sepuluh Nopember.

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Abstract

Oil and gas is one of the energy resources that is explored today. As the consumption of oil and gas increases, the exploration climbs as well. Offshore pipeline is one of the oil and gas transportation method that plays an important role in offshore industry due to its efficiency and effectiveness. During the installation of a pipeline, there are two categories to be analyzed, namely overbend and sagbend. These are two critical regions at pipeline shape when it is being installed. The analysis was performed with aid of OFFPIPE to determine the total stresses that occur along the pipeline during laying process, with tension and stinger-length variations. The case study that was used in this final project is pipeline owned by PT. Trans Pacific Petrochemical Indotama Tuban. The stingerlength variations used are 27m, 32m, 37m, and 42m, and each has five tension variations, which are 50kN, 100kN, 150kN, 200kN, and 250kN. From this research results, it was found that the most favorable combinations are the use of 32 meter long stinger with tension value of 100kN, and stinger-length of 32m with tension of 200kN, because they generated the lowest stresses in both overbend and sagbend regions. The stinger-length of 32m with tension of 100kN produced the lowest stress in overbend region, which is 250 .06 MPa or 69.46% of SMYS. Whereas the stinger-length of 32m with tension of 200kN produced the lowest stress in sagbend region, which is 202.39 MPa or 56.22% of SMYS. Also, the stresses that was generated by these two combinations are within the allowable SMYS defined by DNV code.

Item Type: Thesis (Undergraduate)
Additional Information: RSKe 665.544 Fur s
Uncontrolled Keywords: Stresses, Pipeline, OFFPIPE, S-Lay, Stinger, Tension
Subjects: T Technology > TC Hydraulic engineering. Ocean engineering
Divisions: Faculty of Marine Technology (MARTECH) > Ocean Engineering > 38201-(S1) Undergraduate Thesis
Depositing User: Mr. Tondo Indra Nyata
Date Deposited: 24 Feb 2020 03:41
Last Modified: 24 Feb 2020 03:41
URI: http://repository.its.ac.id/id/eprint/75129

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