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ITS » Undergraduate Theses » Teknik Kelautan
Posted by dv@its.ac.id at 28/04/2016 09:22:14  •  579 Views


ANALISA INTEGRITAS PIPA MILIK JOINT OPERATION BODY PERTAMINA-PETROCHINA EAST JAVA SAAT INSTALASI

PIPELINE INTEGRITY ANALYSIS OWNED JOINT OPERATION BODY PERTAMINA-PETROCHINA EAST JAVA WHEN INSTALLATION

Author :
YUDHANAGARA, ALFARIEE SAMUDRA ( 4310 100 073 )




ABSTRAK

Instalasi pipa adalah proses pemasangan pipa di laut. Joint Operation Body Pertamina-Petrochina East Java JOB-PPEJ ingin menambah satu pipa offshore baru dengan menggunakan pipa berukuran 10 inchi sejajar disamping pipa existing yang berada di Palang Station ke FSO Cinta Natomas Tuban Jawa Timur. Hal yang harus diperhatikan dalam instalasi pipa offshore adalah besarnya tegangan stress yang terjadi pada pipa saat proses tersebut. Mulai dari saat pipa masih diatas laybarge stinger dan saat pipa menyentuh seabed. Ada 2 kategori area yang harus dianalisa yaitu overbend dan sagbend. Selain itu stabilitas pipa bawah laut diperhitungkan dengan mempertimbangkan efek gaya-gaya hidrodinamika yang bekerja pada pipa. Pada tugas akhir ini dilakukan analisis gaya dan stabilitas yang bekerja pada pipa saat instalasi serta analisis tegangan yang terjadi saat instalasi. Pemodelan dilakukan dengan software untuk mengetahui besar tegangan yang terjadi sedangkan untuk perhitungan stabilitas menggunakan codes DNV RP F109 dan dari hasil analisa menunjukkan besar stabilitas lateral sebesar 2826 dan stabilitas vertikal sebesar 1926 maka dari hasil tersebut sudah memenuhi syarat pada codes DNV RP F109. Saat instalasi dengan metode S-Lay tegangan terbesar yang terjadi pada daerah overbend sebesar 6020 SMYS dan pada daerah sagbend sebesar 1239 SMYS maka dari hasil tersebut tegangan terbesar pada daerah overbend dan sagbend tidak melebihi allowable stress pada material.


ABSTRACT

Installation is process of installation of plumbing pipes in the sea. Joint Operation Body Pertamina-Petrochina East Java JOB-PPEJ wants to add a new offshore pipeline using pipe measuring 10 inch pipeline parallel to the existing besides residing in Palang Station to the FSO Cinta NAtomas Tuban East Java. It should be considered in the installation of offshore pipelines is the magnitude of stress that occurs in the process when pipe. Starting from time pipe is still above laybarge stinger and when pipe touches seabed. There are 2 categories of areas that must be analyzed namely overbend and sagbend. In addition the stability of subsea pipelines is calculated by considering the effects of hydrodynamic forces acting on the pipe. In this final analysis and stability of the work force at the time of installation and pipe stress analysis that occurred during installation. Modeling is done by the software to determine the stress that occurs while large for stability calculations using DNV RP F109 codes and of the results of the analysis show great lateral stability and vertical stability at 2826 by 1926 then the results are already eligible to DNV RP F109 codes. During the installation of the S-Lay method the greatest stress occurs in region amounted to 60.20 SMYS overbend and sagbend area of 12.39 SMYS then results of greatest stress on overbend and sagbend not exceed the allowable stress in the material.



KeywordsStess; overbend; sagbend; S-Lay
 
Subject:  Materials- fatique; Underwater pipelines
Contributor
  1. Ir. Imam Rochani, M.Sc.
  2. Prof. Ir. Soegiono
Date Create: 28/04/2016
Type: Text
Format: pdf
Language: Indonesian
Identifier: ITS-Undergraduate-43001160008754
Collection ID: 43001160008754
Call Number: RSKe 621.867 2 Yud a


Source
Undergraduate Theses of Ocean Engineering, RSKe 621.867 2 Yud a , 2014

Coverage
ITS Community

Rights
Copyright @2016 by ITS Library. This publication is protected by copyright and per obtained from the ITS Library prior to any prohibited reproduction, storage in a re transmission in any form or by any means, electronic, mechanical, photocopying, reco For information regarding permission(s), write to ITS Library




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  1.  ITS-Undergraduate-41377-4310100073-abstract_id.pdf - 316 KB
  2.  ITS-Undergraduate-41377-4310100073-abstract_en.pdf - 242 KB
  3.  ITS-Undergraduate-41377-4310100073-conclusion.pdf - 265 KB




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