EMAIL: PASSWORD:
Front Office
UPT. PERPUSTAKAAN
Institut Teknologi Sepuluh Nopember Surabaya


Kampus ITS Sukolilo - Surabaya 60111

Phone : 031-5921733 , 5923623
Fax : 031-5937774
E-mail : libits@its.ac.id
Website : http://library.its.ac.id

Support (Customer Service) :
timit_perpus@its.ac.id




Welcome..guys!

Have a problem with your access?
Please, contact our technical support below:
LIVE SUPPORT


Moh. Fandika Aqsa


Davi Wahyuni


Tondo Indra Nyata


Anis Wulandari


Ansi Aflacha




ITS » Undergraduate Theses » Teknik Kelautan
Posted by dee@its.ac.id at 07/12/2011 15:08:41  •  1026 Views


ANALISA RISIKO TERHADAP PIPA GAS BAWAH LAUT DI TELUK JAKARTA AKIBAT SOIL LIQUEFACTION

RISK ANALYSIS OF SUBSEA GAS PIPELINES IN THE JAKARTA BAY DUE TO SOIL LIQUEFACTION

Author :
RAFIKA, AMINARTI  ( 4307100085 )




ABSTRAK

Tugas akhir ini membahas mengenai analisa risiko kegagalan sistem perpipaan milik PT. Perusahaan Gas Negara Persero Tbk PGN akibat kemungkinan terjadinya soil liquefaction. Sistem perpipaan yang ditinjau ini merupakan jalur transportasi aliran gas pipa gas Labuhan Maringgai Muara Bekasi. Soil liquefaction adalah proses terjadinya perubahan pada tanah yang akan mengalami perubahan sifat dari sifat zat padat menuju sifat zat cair. Proses ini terjadi akibat meningkatnya tekanan air pori tanah dan berkurangnya tegangan geser yang disebabkan oleh adanya interaksi antara beban gelombang gempa dengan sedimen di dasar laut. Analisa risiko dilakukan dengan menggunakan metode Monte Carlo. Metode ini bertujuan untuk mencari frekuensi peluang kegagalan dari sistem yang ditinjau. Sementara perhitungan konsekuensi didapatkan dari kalkulasi tegangan-tegangan yang bekerja pada sistem tersebut antara lain hoop stress axial stress longitudinal stress dan combined stress setelah itu didapatkan harga dari masing-masing frekuensi kejadian dan konsekuensi kejadian harga tersebut dapat dimasukkan ke dalam matriks risiko untuk menentukan tingkat bahaya yang terjadi. Dari analisa yang telah dilakukan soil liquefaction tidak akan terjadi pada pipa yang terkena peak ground acceleration 945min minimum sebesar 0.1202g dan peak ground acceleration rata-rata 945avgsebesar 0.5538g pada semua variasi magnitude gempa Mw. Tetapi untuk pipa yang terkena peak ground acceleration maksimum sebesar 0.9983g terjadi soil liquefaction pada magnitude 6 6.5 dan 7. Untuk magnitude 7.5 dan 8 pada peak ground acceleration maksimum 945max pipa tidak mengalami soil liquefaction. Pada akhirnya penelitian ini menunjukan bahwa risiko pada sistem perpipaan masih dalam keadaan diterima acceptable atau berada dalam kondisi ALARP As Low As Reasonably Practicable.


ABSTRACT

This thesis discusses the risk of failure analysis of piping systems due to the possibility of soil liquefaction. The piping system owned by PT. Perusahaan Gas Negara Persero Tbk PGN was selected for analysis. Piping system being simulated is a path gas pipeline transportation of gas flow Maringgai Labuan- Muara Bekasi. Soil liquefaction is a natural phenomenon in which the soil changes their properties due to increasing pore water pressure and reducing shear stress. As a result the soil will behave like a liquid liquefy. This phenomenon possibly leads to land subsidence in the area of piping system. Risk analysis was conducted using Monte Carlo methods. This method aims to find the probability of failure frequency for the system concerned. The calculation of consequences obtained from the stresses analysis of the system include hoop stress axial stress longitudinal stress and combined stress. Then the risk matrix can be determined by incorporated the values of event frequency and consequence of occurrence into the matrix. This effort aims to determine the level of hazard. An analysis has been done soil liquefaction will not occur in the pipeline that affected minimum peak ground acceleration 945min 0.1202g and it with average peak ground acceleration 945avg 0.5538g on all variations of earthquake magnitude Mw. But for pipeline that affected maximum peak ground acceleration 945max 0.9983g soil liquefaction will be occurred in the magnitude 6 6.5 and 7. At earthquake magnitude 7.5 and 8 on the maximum peak ground acceleration pipe does not occur soil liquefaction. For the result of this study shows that the risk in the piping system is still in a state acceptable or in a state of ALARP As Low As Reasonably Practicable.



KeywordsAnalisa Risiko; Soil liquefaction; CRR (Cyclic Resistance Ratio); CSR (Cyclic Stress Ratio); metode Monte Carlo
 
Subject:  Pipanisasi;Teknik perpipaan
Contributor
  1. Dr. Ir. Wahyudi, M. Sc.
  2. Prof. Dr. Ir. Ketut Buda Artana, M. Sc.
Date Create: 27/07/2011
Type: Text
Format: pdf
Language: Indonesian
Identifier: ITS-Undergraduate-3100011043775
Collection ID: 3100011043775
Call Number: RSKe 621.867 2 Raf a


Source
Undergraduate Thesis of Offshore Engineering, RSKe 621.867 2 Raf a, 2011

Coverage
ITS Community

Rights
Copyright @2011 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




[ Download - Open Access ]

  1.  ITS-Undergraduate-16620-Abstract_id.pdf - 211 KB
  2.  ITS-Undergraduate-16620-Abstract_en.pdf - 209 KB
  3.  ITS-Undergraduate-16620-4307100085-Conclusion.pdf - 227 KB
  4.  ITS-Undergraduate-16620-4307100085-Paper.pdf - 728 KB




 Similar Document...




! ATTENTION !

To facilitate the activation process, please fill out the member application form correctly and completely

Registration activation of our members will process up to max 24 hours (confirm by email). Please wait patiently

POLLING

Bagaimana pendapat Anda tentang layanan repository kami ?

Bagus Sekali
Baik
Biasa
Jelek
Mengecewakan





You are connected from 3.85.10.62
using CCBot/2.0 (https://commoncrawl.org/faq/)



Copyright © ITS Library 2006 - 2019 - All rights reserved.
Dublin Core Metadata Initiative and OpenArchives Compatible
Developed by Hassan