Penilaian Risiko Jalur Pipa Gas Export Pada Daerah Labuh Jangkar
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Institusion
Institut Teknologi Sepuluh Nopember
Author
Rahmadi, Fajar Agung
Subject
HD61 Risk Management
Datestamp
2021-09-27 17:48:19
Abstract :
Pengembangan berbagai fasilitas eksplorasi, pengolahan, produksi dan distribusi gas di laut dalam Indonesia dalam beberapa tahun terakhir menunjukkan pencapaian yang progresif demi memenuhi kebutuhan domestik maupun luar negeri. Dua FPU (Floating Production Unit) yang menghubungkan dari Hub Gendalo dan Hub Gehem akan beroperasi di perairan dalam Selat Makassar, dimana sweet gas didistribusikan menggunakan pipa gas menuju pengolahan darat di Santan Terminal. Dalam kasus penelitian ini, akan dianalisis offshore gas pipeline dengan diameter 20 inch yang akan digelar dari field Gendalo dan Gehem Kalimantan Timur yang melewati daerah labuh jangkar. Pada kasus ini akan dilakukan penilaian risiko terhadap bahaya dari ship sinking, drop anchor dan drag anchor sesuai DNV-RP-F107 dan DNV-RP-F111. Hal ini dikarenakan jalur yang dilewati pipa gas tersebut melewati daerah labuh jangkar kapal. 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 menggunakan metode ETA (Even Tree Analysis). Penilaian konsekuensi dan risk matrix berdasarkan standar DNV-RP-F107. Untuk simulasi dan pemodelan dari pipa untuk load stress analysis menggunakan software AutoPipe. Hasil dari penilaian risiko yang dilakukan, level risiko tertinggi pada dropped anchor berada di zona not acceptable. Untuk level risiko dragged anchor menunjukkan di zona acceptable. Sedangkan level risiko sinking vessel, berada di zona ALARP (As Low As Reasonable Practicable). Mitigasi yang direkomendasikan yaitu dengan mengkondsikan jalur pipa agar dapat dikubur di dalam seabed. ================================================================================================ The development of various exploration, production, processing and distribution facilities of gas in the Indonesian deep sea in recent years shows a progressive achievement in order to meet the needs of both domestic and overseas. Two FPUs (Floating Production Unit) which connects from the Hub Gendalo and Hub Gehem will operate in the Makassar Strait, where the sweet gas is distributed using a gas pipeline to the onshore processing in Santan Terminal. In this study, offshore gas pipeline with a diameter of 20 inches that will be held from Gendalo and Gehem fields that pass through the region of East Kalimantan anchoring area will be analyzed. In this case, the risk assessment will be carried out against the danger of the ship sinking, drop anchor and drag anchor according do DNV-RP-F107 and DNV-RP-F111. This is because the path of the gas pipeline passes through the ship’s anchoring area. Risk assessment was conducted to determine the risk level of possible frequency and consequences for impact, pull over and hooking of the anchor against the pipeline, which will provide operational hazard for exploration, environment and human activity. Frequency assessments using the ETA method to describe the scenario of the frequency assessment. Consequences assessment and risk matrix calculation was using the standard DNV-RP-F107. For simulation and modeling of the pipe for load stress analysis using software AutoPipe. The results of this assessment is that the highest risk of dropped anchor assessment is in the not acceptable zone. For dragged anchor assessment is in the acceptable zone, and the sinking vessel assessment, the risk level shows in the ALARP (As Low As Reasonable Practicable). Recommended mitigation for this Chase is to provide protection for buried pipelines in the seabed.
Pengembangan berbagai fasilitas eksplorasi, pengolahan, produksi dan distribusi gas di laut dalam Indonesia dalam beberapa tahun terakhir menunjukkan pencapaian yang progresif demi memenuhi kebutuhan domestik maupun luar negeri. Dua FPU (Floating Production Unit) yang menghubungkan dari Hub Gendalo dan Hub Gehem akan beroperasi di perairan dalam Selat Makassar, dimana sweet gas didistribusikan menggunakan pipa gas menuju pengolahan darat di Santan Terminal. Dalam kasus penelitian ini, akan dianalisis offshore gas pipeline dengan diameter 20 inch yang akan digelar dari field Gendalo dan Gehem Kalimantan Timur yang melewati daerah labuh jangkar. Pada kasus ini akan dilakukan penilaian risiko terhadap bahaya dari ship sinking, drop anchor dan drag anchor sesuai DNV-RP-F107 dan DNV-RP-F111. Hal ini dikarenakan jalur yang dilewati pipa gas tersebut melewati daerah labuh jangkar kapal. 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 menggunakan metode ETA (Even Tree Analysis). Penilaian konsekuensi dan risk matrix berdasarkan standar DNV-RP-F107. Untuk simulasi dan pemodelan dari pipa untuk load stress analysis menggunakan software AutoPipe. Hasil dari penilaian risiko yang dilakukan, level risiko tertinggi pada dropped anchor berada di zona not acceptable. Untuk level risiko dragged anchor menunjukkan di zona acceptable. Sedangkan level risiko sinking vessel, berada di zona ALARP (As Low As Reasonable Practicable). Mitigasi yang direkomendasikan yaitu dengan mengkondsikan jalur pipa agar dapat dikubur di dalam seabed. ================================================================================================ The development of various exploration, production, processing and distribution facilities of gas in the Indonesian deep sea in recent years shows a progressive achievement in order to meet the needs of both domestic and overseas. Two FPUs (Floating Production Unit) which connects from the Hub Gendalo and Hub Gehem will operate in the Makassar Strait, where the sweet gas is distributed using a gas pipeline to the onshore processing in Santan Terminal. In this study, offshore gas pipeline with a diameter of 20 inches that will be held from Gendalo and Gehem fields that pass through the region of East Kalimantan anchoring area will be analyzed. In this case, the risk assessment will be carried out against the danger of the ship sinking, drop anchor and drag anchor according do DNV-RP-F107 and DNV-RP-F111. This is because the path of the gas pipeline passes through the ship’s anchoring area. Risk assessment was conducted to determine the risk level of possible frequency and consequences for impact, pull over and hooking of the anchor against the pipeline, which will provide operational hazard for exploration, environment and human activity. Frequency assessments using the ETA method to describe the scenario of the frequency assessment. Consequences assessment and risk matrix calculation was using the standard DNV-RP-F107. For simulation and modeling of the pipe for load stress analysis using software AutoPipe. The results of this assessment is that the highest risk of dropped anchor assessment is in the not acceptable zone. For dragged anchor assessment is in the acceptable zone, and the sinking vessel assessment, the risk level shows in the ALARP (As Low As Reasonable Practicable). Recommended mitigation for this Chase is to provide protection for buried pipelines in the seabed.
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