Optimasi Penjadwalan Untuk Mengurangi Risiko Keterlambatan Proyek Pada Fase Detailed Engineering Design Di Konsultan Teknik Bidang Minyak Bumi Dan Gas

Qonitah, Iftinaniffah (2025) Optimasi Penjadwalan Untuk Mengurangi Risiko Keterlambatan Proyek Pada Fase Detailed Engineering Design Di Konsultan Teknik Bidang Minyak Bumi Dan Gas. Masters thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Keterlambatan pada fase Detailed Engineering Design (DED) merupakan salah satu permasalahan kritis dalam proyek minyak dan gas karena berdampak langsung pada keterlambatan atau kesalahan pengadaan dan konstruksi. Pada periode 2023–2025, Engineering Consultant X yang berperan sebagai subkonsultan dalam tiga proyek DED bangunan lepas pantai mengalami keterlambatan sehingga diperlukan rebaseline jadwal proyek. Kondisi tersebut dipicu oleh ketidakseimbangan beban kerja antar departemen, dimana ada departemen yang menangani hingga 14 dokumen per personel, sementara departemen lain hanya 3 dokumen per personel, sehingga meningkatkan risiko keterlambatan proyek dan potensi denda pada perusahaan. Berdasarkan permasalahan tersebut, tugas akhir ini bertujuan untuk mengoptimalkan penjadwalan proyek DED guna meminimalisir risiko keterlambatan tanpa menimbulkan kerugian finansial bagi perusahaan. Metodologi yang digunakan meliputi pemodelan jaringan kerja menggunakan metode PERT berdasarkan data aktual dari tiga proyek sebelumnya untuk mengetahui durasi yang lebih realistis, metode CPM, serta analisis risiko keterlambatan melalui simulasi Monte Carlo, dengan mempertimbangkan keterbatasan sumber daya perusahaan berupa jumlah personel, waktu kerja, ketersediaan peralatan, dan perangkat lunak, sekaligus mendorong redistribusi beban kerja agar lebih seimbang antar departemen. Hasil penelitian menunjukkan bahwa durasi proyek optimal yang diperoleh adalah 336 hari kalender atau 241 hari kerja dengan total kebutuhan 208 personel, serta aktivitas yang paling berpengaruh terhadap durasi proyek berada pada jalur kritis, yaitu Technical Bid Evaluation for Jacket Main Structure, Project Engineering Close Out Report, dan Material Take Off for Substructures Appurtenances – Client Review.
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Delays in the Detailed Engineering Design (DED) phase is one of the critical issue in oil and gas projects, as it can directly lead to delays or errors in the procurement and construction phases. During the period of 2023–2025, Engineering Consultant X, as a subconsultant on three offshore DED projects, experienced schedule delays that lead to schedule rebaseline. These delays were primarily caused by an imbalance in workload among departments, where some departments were responsible for up to 14 documents per person, while others handled only three documents per person. This imbalance increased the risk of project delays and potential financial penalties for the company. Based on these issues, this final project aims to optimize the scheduling of DED projects in order to minimize the risk of delays without causing financial losses to the company. The methodology applied includes work network modeling using the PERT method based on actual data from three previous projects to obtain more realistic activity durations, the CPM method, and delay risk analysis through Monte Carlo simulation. The optimization process considers the company’s resource constraints, including the number of personnel, working hours, availability of equipment, and engineering software, while also promoting workload redistribution to achieve a more balanced allocation among departments. The results indicate that the optimal project duration is 336 calendar days or 241 working days with a total requirement of 208 personnel. The activities with the greatest impact on the project duration are located on the critical path, namely Technical Bid Evaluation for Jacket Main Structure, Project Engineering Close Out Report, and Material Take Off for Substructures Appurtenances – Client Review.

Item Type:	Thesis (Masters)
Uncontrolled Keywords:	Detailed Engineering Design, Offshore, Optimization, Schedule
Subjects:	T Technology > T Technology (General) > T56.8 Project Management
Divisions:	Interdisciplinary School of Management and Technology (SIMT) > 61101-Master of Technology Management (MMT)
Depositing User:	Iftinaniffah Qonitah
Date Deposited:	15 Jan 2026 07:33
Last Modified:	15 Jan 2026 07:33
URI:	http://repository.its.ac.id/id/eprint/129657

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