Pemodelan Pengaruh Faktor Deteriorasi Pipa terhadap Keandalan Pengelolaan Aset pada Jaringan Distribusi Air Bersih

Nugroho, Widyo (2024) Pemodelan Pengaruh Faktor Deteriorasi Pipa terhadap Keandalan Pengelolaan Aset pada Jaringan Distribusi Air Bersih. Doctoral thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

International Water Association menyatakan bahwa parameter kehilangan air merupakan sebuah indikator efisiensi kinerja pengelolaan jaringan distribusi air bersih yang telah diberlakukan secara internasional. Terdapat empat tindakan penting dalam pengendalian kehilangan air dalam pencapaian efisiensi indeks efisiensi infrastruktur dan mempengaruhi bagaimana kehilangan air dapat dikelola sehingga volume dan nilai kehilangan air dalam sebuah jaringan distribusi dapat diketahui secara ekonomis. Salah satu tindakan tersebut adalah pengelolaan aset, terutama pipa yang merupakan aset utama pada jaringan. Dengan demikian, keberadaan data deteriorasi pipa merupakan hal esensial dalam pengambilan keputusan tindakan pengelolaan aset, terutama berkaitan dengan keputusan antara perbaikan dan penggantian pipa pada jaringan. Penelitian ini bertujuan mengetahui rumusan model prediksi deteriorasi pipa pada jaringan distribusi air bersih dan mendapati faktor fisik, operasional dan lingkungan yang mempengaruhi kerusakan pipa serta rumusan periode penggantian yang optimum untuk pengambilan keputusan penggantian jaringan pipa Penelitian ini menggunakan pendekatan generalisasi statistik berdasarkan data empirik, dengan metode non homogeneous poisson process berdasarkan kaidah Bayesian yang divalidasi dengan kaidah frequentist. Dari pemodelan deteriorasi pipa didapati bahwa terdapat hubungan positif antara tingkat kerusakan pipa dan usia pipa, serta hubungan negatif antara tingkat kerusakan pipa dan diameter pipa. Pemodelan spatial point process menunjukkan tingkat intensitas persebaran lokasi kerusakan bersifat tidak homogen di mana terdapat dua wilayah dengan intensitas kerusakan yang berbeda yang dipengaruhi secara signifikan oleh faktor fisik, operasional dan lingkungan jaringan. Berdasarkan biaya total pada analisis biaya siklus hidup didapati bahwa waktu pembaruan pipa yang optimal pada usia 18 tahun hingga 32 tahun.
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The International Water Association states that the water loss parameter is an indicator of the efficiency of water distribution network management performance that has been implemented internationally. There are four important actions in controlling water loss in achieving infrastructure efficiency index efficiency and influencing how water loss can be managed so that the volume and value of water loss in a distribution network can be known economically. One of these actions is asset management, especially pipes which are the main assets in the network. Thus, the existence of pipe deterioration data is essential in making decisions on asset management actions, especially with regard to decisions between repair and replacement of pipe networks. This research aims to determine the formulation of a prediction model for pipe deterioration in water distribution networks and to find physical, operational and environmental factors that influence pipe damage as well as formulating the optimum replacement period for making decisions on replacing pipe networks. This research uses a statistical generalization approach based on empirical data, using the method non homogeneous Poisson process based on Bayesian rules validated with frequentist rules. From pipe deterioration modeling, it is found that there is a positive relationship between the level of pipe damage and pipe age, as well as a negative relationship between the level of pipe damage and pipe diameter. Spatial point process modeling shows that the level of intensity distribution of damage locations is inhomogeneous, where there are two areas with different failure intensities which are significantly influenced by physical, operational and environmental factors of the network. Based on the total cost in the life cycle cost analysis, it is found that the optimal pipe renewal time is 18 years to 32 years.

Item Type:	Thesis (Doctoral)
Uncontrolled Keywords:	Physical Asset Management, Pipe Deterioration, Poisson Process, Pengelolaan Aset Fisik, Deteriorasi Pipa, Poisson Process
Subjects:	H Social Sciences > HA Statistics > HA30.3 Time-series analysis H Social Sciences > HA Statistics > HA30.6 Spatial analysis T Technology > TA Engineering (General). Civil engineering (General) > TA169 Reliability (Engineering) T Technology > TA Engineering (General). Civil engineering (General) > TA169.5 Failure analysis T Technology > TD Environmental technology. Sanitary engineering > TD481 Water distribution systems
Divisions:	Faculty of Civil, Planning, and Geo Engineering (CIVPLAN) > Civil Engineering > 22001-(S3) PhD Thesis
Depositing User:	Widyo Nugroho
Date Deposited:	31 Jul 2024 01:52
Last Modified:	31 Jul 2024 01:52
URI:	http://repository.its.ac.id/id/eprint/110316

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