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All Journal International Journal of Marine Engineering Innovation and Research Indonesian Journal of Maritime Technology or abbreviated (ISMATECH)
Samsu Dlukha Nurcholik
Naval Architecture, Institut Teknologi Kalimantan
Automotive Engineering Civil Engineering, Building, Construction & Architecture Control & Systems Engineering Decision Sciences, Operations Research & Management Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Physics Transportation

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Comparative Evaluation of Critical Path Method and Critical Chain Project Management for Ultra Low-Pressure Compressor Installation in the Oil and Gas Industry Danur Widyanto; Lusi Ernawati; Samsu Dlukha Nurcholik; Rizqy Romadhona Ginting; Thorikul Huda
International Journal of Marine Engineering Innovation and Research Vol. 11 No. 2 (2026)
Publisher : Department of Marine Engineering, Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j25481479.v11i2

Abstract

Project delays remain a persistent challenge in the oil and gas industry, where conventional scheduling methods such as the Critical Path Method (CPM) fail to adequately address resource constraints and duration uncertainty. This study evaluates the effectiveness of Critical Chain Project Management (CCPM) as an alternative scheduling approach for Ultra-Low Pressure (ULP) compressor installation projects. A case study methodology was applied using actual project data from Pamaguan Plant, PT Pertamina Hulu Sanga Sanga, involving Work Breakdown Structure analysis, critical chain identification via Microsoft Project, and buffer sizing using the Root Square Error Method (RSEM). From 1,096 activities, 86 critical activities formed the critical chain, yielding a project buffer of 28 days and 27 feeding buffers. Buffer utilization reached 171%, placing the project in the red zone, indicating the planned buffer was insufficient to absorb delays caused by duration variability, resource limitations, and behavioral phenomena including Student Syndrome and Parkinson's Law. These findings confirm that CCPM offers a structurally superior scheduling framework compared to CPM, yet its effectiveness depends on disciplined execution and proactive buffer monitoring. This study contributes quantitative evidence on buffer utilization effectiveness in oil and gas project scheduling, providing practical guidance for managing high-complexity installation projects.
Technical Analysis of the Solar-Assisted Fish Cooling System for Fishing Boat Risal Amin; Gad Gunawan; Kharis Sugiarto; Happy Aprilia; Samsu Dlukha Nurcholik; Devy Setiorini Sa’adiyah
Indonesian Journal of Maritime Technology Vol. 4 No. 1 (2026): Volume 4 Issue 1, June 2026
Publisher : Naval Architecture Department, Kalimantan Institut of Technology

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35718/ismatech.v4i1.8482000

Abstract

As an archipelagic country with a coastline of thousands of kilometers and enormous oceans with high diversity, Indonesia has very rich fishing resources from capture fisheries. But this maritime treasure is typically under-exploited, poorly managed and vulnerable to environmentally damaging activities. Indonesia can implement effective and environmentally friendly technical solutions to prevent marine pollution. For instance, the use of Solar Power equipment (SPS) in fishing vessels can meet the energy needs of the refrigeration equipment on board. The objective of this study is to investigate the viability of solar panel installation on fishing vessels and its effects on vessel stability. The results showed that the vessel's roof is fitted with eight solar panels, each with a capacity of 500 Wp, to create 14.92 kWh per day to power five refrigeration units. Stability analysis shows that the addition of rooftop solar panels, cooling boxes, and batteries in the fish hold is in compliance with IMO Standard A.749(18) Chapter 3, ensuring the safety of the system for practical application.
Co-Authors Danur Widyanto Devy Setiorini Sa’adiyah Gad Gunawan Happy Aprilia Kharis Sugiarto Lusi Ernawati Risal Amin Rizqy Romadhona Ginting Thorikul Huda