Pradana, Muhammad Arif (2016) Penilaian Risiko Pipa Gas Bawah Laut Akibat Survei Seismik (Perbandingan Metode Matematis Dan Permodelan Geoteknik). Undergraduate thesis, Institut Teknologi Sepuluh Nopember.
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Abstract
Gas merupakan salah satu sumber daya alam yang ada di
Indonesia. Saat ini terdapat berbagai fasilitas eksplorasi,
pengolahan, produksi dan distribusi gas di laut dalam Indonesia
dalam beberapa tahun terakhir menunjukkan usaha yang progresif
demi memenuhi kebutuhan domestik maupun luar negeri. Sebuah
terminal dapat diperoleh potensi sember gas baru yang terdapat
disekitar pipa yang dianalisis dengan survey seismic. Untuk itu
dalam kasus penelitian ini, akan dianalisis pengaruh aktivitas
survey seismic terhadap offshore gas pipeline dengan diameter 610
mm yang akan digelar dari field terminal tersebut. Pada kasus ini
akan dilakukan penilaian risiko baik frekuensi maupun
konsekuensi terhadap bahaya dari ship sinking, drop anchor dan
drag anchor sesuai DNV-RP-F107. Hal ini dikarenakan kapal yang
melakukan aktivitas survey seismic melewati pipa gas tersebut.
Untuk itu, penilaian risiko terhadap bahaya tersebut harus
dilakukan karena dampak konsekuensi yang mungkin terjadi yaitu
impact, pull over dan hooking dari jangkar terhadap pipa akan
memberikan bahaya bagi operasional kegiatan eksplorasi,
lingkungan dan manusia. Penilaian frekuensi, konsekuensi dan risk
matrix berdasarkan standar DNV-RP-F107. Selain itu juga
dilakukan Geotechnical Analysis dengan menganalisa tegangan
dari pipa berdasarkan perhitungan matematis berdasarkan safety factor yang ada. Untuk simulasi dan pemodelan dari pipa akibat
aktivitas geoteknik menggunakan software Geostudio (Geoslope).
Hasil dari penilaian risiko yang dilakukan, dari aktivitas survey
seismic dengan melakukan risk modeling dapat di terima
(acceptable) di risk matrix. Untuk perhitungan tegangan pipa juga
dapat diterima (acceptable) dari safety factor yang ada. Dan untuk
permodelan dari pipa dengan software geoslope pipa dinyatakan
aman terutama yang diatas seabed karena terdapat coating yang
melindungi pipa tersebut. Sedangkan untuk tindakan mitigasi tidak
perlu dilakukan karena pipa aman dari aktivitas survey seismic,
dan selanjutnya dapat dilakukan pembangunan sumur gas baru.
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Gas is one of the natural resources that exist in Indonesia. Today
there are a variety of facilities exploration, production, processing
and distribution of gas in the sea in Indonesia in recent years show
a progressive business to meet the needs of both domestic and
overseas. A terminal can be obtained cracked potential new gas
contained around pipes were analyzed by seismic surveys.
Therefore in the case of this study, will be analyzed the effect of
seismic survey activities on the offshore gas pipeline with a
diameter of 610 mm which will be held from the terminal field. In
this case the risk assessment will be carried out both the frequency
and consequences of the danger of the ship sinking, drop anchor
and drag anchor in accordance DNV-RP-F107. This is because
ships do seismic survey activity of the gas passing through the
pipeline. To that end, the hazard risk assessment should be carried
out because of the impact of the possible consequences that impact,
pull over and hooking of the anchor against the pipeline would
represent a danger to the operational activities of exploration, the
environment and humans. Assessment frequency, consequences
and risk matrix based on the standard DNV-RP-F107. It also
conducted Geotechnical Analysis by analyzing the voltage of the
pipe based on a mathematical calculation based on existing safety
factor. For simulation and modeling of the pipeline due to geotechnical activities using software Geostudio (Geoslope). The
results of the risk assessment is carried out, from the seismic
survey activities to perform risk modeling can be received
(acceptable) in the risk matrix. For the calculation of pipe stress
are also acceptable (acceptable) from the existing safety factor.
And for the modeling of the pipe with a pipe geoslope declared safe
software mainly over seabed because there are coating that
protects the pipe. As for the mitigation measures would be
unnecessary as the pipe is safe from seismic survey activity, and
then do the construction of new gas wells
| Item Type: | Thesis (Undergraduate) |
|---|---|
| Additional Information: | RSSP 658.155 Pra p |
| Uncontrolled Keywords: | Risk Assessment; DNV-RP-F107; Risk Matrix; Survey Seismic, Geotechnical Analysis, Geoslope. |
| Subjects: | H Social Sciences > HD Industries. Land use. Labor > HD61 Risk Management |
| Divisions: | Faculty of Marine Technology (MARTECH) > Marine Engineering > 36202-(S1) Undergraduate Thesis |
| Depositing User: | ansi aflacha |
| Date Deposited: | 26 Mar 2020 08:52 |
| Last Modified: | 26 Mar 2020 08:52 |
| URI: | http://repository.its.ac.id/id/eprint/75567 |
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