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Submarine pipelines are vital infrastructures in aviation fuel distribution, carrying high risks of operational disruption, safety issues, and environmental pollution. In 2025, the aviation fuel receiving submarine pipeline at Integrated Terminal Ampenan was deformed due to mechanical pulling by MT Anargya I, causing system shutdown. This incident created risks of seawater intrusion, marine pollution, and potential fuel shortages at Lombok International Airport. This study evaluates the effectiveness of applying a double-ended draining method combined with an oil bubble trap as a fast, safe, and sustainable solution for submarine pipeline repair. Using a case study and descriptive-analytical approach based on the Continuous Improvement Program (CIP), the research analyzed quality, cost, delivery, safety, environmental, and workforce aspects. The results showed the method effectively drained aviation fuel without seawater contamination, prevented marine spills, maintained fuel quality within specifications, and completed repairs before critical stock levels were reached. Additionally, it provided significant cost savings compared to emergency supply operations and achieved zero safety incidents and environmental pollution. The integration of double-ended draining and oil bubble trap proved to be an effective, adaptive innovation with strong potential for replication and standardization in other aviation fuel submarine pipeline systems.

This research investigates climate change adaptation frameworks for Indonesian port infrastructure and workforce safety through integrated risk management approaches addressing physical facility resilience and human resource protection. Through qualitative analysis involving 37 stakeholders including port authorities, terminal operators, marine engineers, climate scientists, occupational health specialists, and port workers, this study examines how climate threats including sea level rise, extreme weather, flooding, and heat stress affect both port operations and worker safety requiring coordinated adaptation strategies. Results demonstrate that integrated frameworks can reduce climate-related operational disruptions by 50-70%, decrease worker heat illness by 60-80%, improve emergency response effectiveness by 55-75%, and enhance infrastructure resilience by 45-65% when combining physical hardening with workforce protection measures. Key challenges include immediate infrastructure damage (ports already experiencing 3-8 annual flooding shutdowns), worker heat illness epidemic (150+ cases in 2023 with 300% increase), investment decision urgency ($15-25 billion infrastructure commitments 2024-2030), and organizational coordination across fragmented stakeholders. Findings reveal that successful climate adaptation requires holistic sociotechnical approaches treating ports as integrated human-infrastructure systems where worker safety and facility resilience prove inseparable, supporting Indonesia's maritime economic security and coastal community welfare through comprehensive climate risk management.

This research investigates the effectiveness of container cargo information management systems at Indonesian ports, examining the critical roles of competency training, shore-based personnel capabilities, and technology adoption in determining system performance and operational outcomes. Container terminals increasingly rely on sophisticated information systems including Terminal Operating Systems (TOS), Port Community Systems (PCS), and Electronic Data Interchange (EDI) for coordinating complex cargo operations, yet system effectiveness depends not solely on technology sophistication but critically on personnel competency, training adequacy, and human-technology integration. Through qualitative analysis involving terminal operators, port information system managers, shore-based operational personnel, training coordinators, and technology providers, this study examines how the interplay between human capabilities and technological capabilities determines information system effectiveness. Results demonstrate that comprehensive competency training programs can improve system utilization effectiveness by 45-65%, reduce operational errors by 50-70%, and enhance productivity by 25-40% through better human-technology integration. Key challenges include inadequate training investment, high personnel turnover, technology complexity exceeding user capabilities, and organizational resistance to systematic training programs. Findings reveal that container terminal information system effectiveness depends fundamentally on sociotechnical system optimization addressing both technological infrastructure and human capability development through sustained competency building programs. This research contributes to port operations literature by providing evidence-based frameworks for human factors integration in port technology implementation.

This study evaluates the implementation of spot-check testing for road preservation works in Manado City, specifically on the Kairagi–Mapanget segment, the Manado City–Wori boundary, and the Liwas Terminal Access Road, to identify existing problems and assess the effectiveness of engineering-based mitigation efforts. The objective is to examine construction quality compliance with technical specifications and identify operational challenges encountered on site. The methodology encompasses the measurement of asphalt layer thickness and density via a core drill, the examination of contract documents, the analysis of laboratory test results, and the execution of field observations. The findings show that most samples meet the required standards, although several locations require corrective action. Challenges arise from weather conditions, heavy traffic, equipment limitations, and the need for adaptation to updated technical regulations. Operational mitigation strategies, staff training, the use of core drill technology, and digital documentation were found to enhance accuracy and efficiency in evaluation. The research demonstrates the value of stakeholder collaboration and capacity building in supporting quality control for road preservation works. A multidimensional approach is effective in resolving technical and operational complexities in urban road projects.

This study aims to analyse the role of the East Java Provincial Transportation Agency in improving the quality of inter-city bus transportation services within the province (AKDP) based on Soekanto's role theory (in Solahudin et al, 2022), which is reviewed using three indicators: regulatory role, service role, and supervisory role. The research employed a qualitative research method with techniques of interviews, observation, and documentation of the Transportation Agency, Organda, PO owners, drivers and conductors, as well as passengers at Bungurasih Terminal. The results of the study show that in terms of regulation, the Transportation Agency has established tariff policies and Minimum Service Standards (SPM), but these have not functioned optimally as operational guidelines, as reflected in the low transparency of tariff information and the varying quality of the fleet. In terms of service, although safety inspection procedures and service facilities are available, the quality of safety, comfort, terminal facilities, as well as access to information and complaint mechanisms have not been consistently felt by users. In terms of supervision, tariff compliance control and SPM implementation remain weak and tend to be tolerant of irregularities. The main findings indicate a serious gap between normative standards and field practices, resulting in standards losing their coercive power as quality guarantors. Therefore, this study recommends strengthening the enforcement of standards in a firm and consistent manner, increasing the transparency of service and tariff information, and conducting supervision that is oriented towards tangible results for the community.

This research investigates the development of integrated operational systems connecting terminal and ship operations for docking and berthing time optimization through systematic analysis of historical data. Port efficiency depends critically on minimizing vessel turnaround time, with berth allocation, docking procedures, and cargo operations coordination determining overall port productivity and competitiveness. Through qualitative analysis involving port operators, terminal managers, ship agents, harbor masters, and operations research specialists, this study examines how historical operational data can inform intelligent coordination systems improving berthing efficiency. Results demonstrate that data-driven integration systems incorporating predictive analytics, automated scheduling, and coordinated workflows can reduce average berth turnaround time by 15-30%, improve berth utilization by 20-35%, and decrease operational conflicts by 40-60% through optimized allocation and proactive coordination. Key implementation challenges include data quality and availability, system integration complexity, organizational coordination barriers, and resistance to automated decision support. Findings reveal that historical data-based optimization represents transformative advancement from experience-based scheduling to evidence-driven operational planning supporting port efficiency enhancement, capacity maximization, and service reliability improvement. This research contributes to port operations literature by providing practical frameworks for data-driven berthing optimization applicable to diverse port operational contexts.

This study aims to analyze the influence of terminal users’ perceptions on business development opportunities at Mangkang Type A Terminal, Semarang City, managed by the Central Java Class I Transportation Management Agency (BPTD). As a major transportation hub, the terminal functions not only as a passenger transit point but also as a strategic economic area with potential for commercial facility development. However, the utilization of business opportunities at Mangkang Terminal remains suboptimal, necessitating an evidence-based analysis of the factors that shape these opportunities. This research employs a quantitative approach using a survey method involving terminal users, including passengers, public transport drivers, and terminal visitors. Data were collected using a Likert-scale questionnaire and analyzed through multiple linear regression to examine the influence of user perceptions on business potential, which includes interest in facility usage, demand for additional services, and preferences for commercial space utilization. The findings indicate that perceptions related to comfort, safety, cleanliness, accessibility, and service quality significantly affect business development opportunities. Comfort and service quality emerge as the most dominant factors driving user interest in commercial facilities. These results emphasize that improving terminal service quality can serve as an effective strategy to expand business opportunities and enhance non-tax revenue.

The decline in the performance of the die casting machine in 1998 after a long period of producing copper terminals showed dimensional defects and instability in product quality, especially in nozzle clogging, reduced copper flow, crust buildup on the gooseneck, plunger movement obstruction, and hydraulic pressure leaks. The purpose of planning the replacement and repair of die-casting machine components is to obtain replacement and repair costs, replacement and repair schedules for the period 2026, and the ratio of maintenance costs to profits. The replacement and repair planning method includes collecting previous maintenance data, applying the inspection-replace-repair-overhaul (IRRO) method, evaluating component conditions, predicting component service life, predicting labor costs, predicting supporting equipment to be used in maintenance, predicting the time to replace spare parts or reinstall repaired components, estimating replacement and repair costs for the period 2026, and calculating the ratio of replacement and repair costs to profits. The planning results obtained replacement and repair costs for the 2026 period are 75.770.000,- IDR with an estimated die casting machine rental rate of  1,500,000 IDR/hour which has the potential to be rented for 1,200 hours/year, and the ratio of maintenance costs to profits is 10,02 % which implies that the die casting machine with a capacity of 40 units/hour is still suitable for use and has the prospect of generating profits for the next few years.

This study presents a high-accuracy real-time soft failure detection framework for large-scale fiber-to-the-home(FTTH) optical access network using a hybrid ensemble of Isolation Forest and One-Class Support Vector Machine (OCVSM). The proposed model was trainde and validated on a real-word multivariate performance dataset comprising more than 1.8 million samples collected at 5-minute intervals from 50 Optical Line Terminal (OLTs) and over 3,000 Optical Network Terminals (ONTs) across a five-month periode(June-October 2025). Ground-truth validation was performed using 111 confirmed network incidents in October 2025 affecting 12,990 customer. The hybrid ensemble achieved Precision 0.940, Recall 0.982, with an average detection delay of only 7.8 minutes-representing an 87.7% reduction compared to conventional manual response (63.5 minutes). The framework significantly outperforms traditional threesholding and recent ML-based methods while demonstrating practical deployability in live operational enviroments.

This study used a qualitative approach with a Systematic Literature Review (SLR) as the data collection technique. This study examined the institutional factors causing long dwelling times at Tanjung Emas Port and mitigation efforts. The analysis revealed that the main root of the problem lies in the lengthy administrative and goods inspection (customs) processes, particularly in the red, yellow, and green inspection lanes. Obstacles include the lack of data integration (such as PIB and SPPB dates) between the Semarang Container Terminal (TPKS) and Customs, as well as incomplete documents by service users. A significant impact was felt on imports, where dwelling times were longer due to complicated quarantine and customs inspections, while exports were relatively unaffected.

This study examines passenger service procedures on the KM Gunung Dempo at PT PELNI's Sorong Branch, specifically related to the efficiency of the embarkation and disembarkation processes. This study was motivated by operational constraints such as long queues, limited terminal facilities, and low staff productivity. Using a qualitative descriptive method with a quantitative approach, data was collected through observation, interviews, and documentation. Analysis was conducted by calculating time efficiency and service productivity. The results revealed a time efficiency level of 66.7% (categorized as inefficient), where the actual time reached 180 minutes from the standard of 120 minutes. In addition, staff productivity was only 0.73 passengers/minute, still below the ideal standard (≥ 1 passenger/minute). The main inhibiting factors include a lack of personnel, a manual ticket verification system, minimal terminal facilities, and weak inter-agency coordination.

This study aims to explore the implementation of Standard Operating Procedures for immigration services at TPI Tanjung Priok Port and examine its impact on service effectiveness in Indonesia's maritime sector. The research employed a qualitative approach to analyse the gap between formal SOP guidelines and on-the-ground practices, examining internal and external factors, including resource limitations, technological constraints, and inter-agency coordination issues. The findings reveal significant disparities that lead to both positive and negative discretion amongst frontline Immigration officers, influencing service consistency, efficiency, and transparency. Negative discretion results in procedural deviations that compromise reliability and potentially foster corruption, delays, and inefficiencies. In contrast, positive discretion emerges as adaptive responses indicating weaknesses in SOP design or infrastructure. The study concludes that enhancing frontline officers' competence, motivation, and accountability is essential for achieving desired outcomes, whilst integrating technological solutions such as digital documentation and real-time monitoring is vital for streamlined, transparent, and accountable procedures. Improving SOP adherence, coupled with better resource allocation and inter-institutional cooperation, can significantly reduce vessel turnaround times, lower logistics costs, and bolster maritime competitiveness. The research advocates for dedicated training programmes, supervisory systems, and technological innovations to ensure SOP compliance, minimise discretion-driven deviations, and promote accountability, thereby optimising maritime service delivery and supporting Indonesia's strategic maritime development objectives.

Background. Public transportation of vehicles coming in and going out from the Passo Transit Terminal, along with its location close to the market, can influence the levels of CO and HC in the exhaust gases from the vehicles. This can affect the air quality around the area. This is because the intercity buses use diesel fuel, some of them are old, and others have been operating for about 10 years with only 4 to 5 months before their last maintenance. Because of this, the researcher wants to study the levels of CO and HC in the exhaust gas emissions from the vehicles. Research Objective. To check the air quality of the exhaust gas emissions from intercity buses at the Passo Transit Terminal. Method. This study is a descriptive research that includes laboratory tests conducted at the HipperKes Laboratory Center. The population of this study includes 20 intercity buses, with a sample of 2 buses selected based on inclusion and exclusion criteria. Results and Discussion. The results of the CO levels show that bus 1 has 1.77% and bus 2 has 0.22%, which exceed the standard quality level of 0.5% as stated in the Regulation of the Minister of Environment and Forestry Number 8 of 2023. Conclusion and Suggestions. The parameters measured do not meet the required exhaust emission quality standards. The community and passengers are encouraged to increase awareness and use personal protective equipment such as masks

This study aims to determine how to optimize container loading and unloading activities at PT. Pelindo Multi Terminal Sibolga Branch. Container loading and unloading activities are one of the main activities in port operations that greatly affect the efficiency and productivity of maritime logistics. PT. Pelindo Multi Terminal Sibolga Branch as one of the port service providers has an important role in ensuring the flow of goods in the West Coast of North Sumatra. This study is to analyze and identify factors that affect container loading and unloading performance as well as optimization strategies to improve time, costs, and resource utilization. The methods used in this study include field observations, interviews with related parties, and analysis of historical data on operational activities. The results of the study indicate that the main obstacles come from limited equipment, lack of coordination between parties, and low utilization of information technology. Suggested optimization efforts include the addition of heavy equipment for unloading, increasing workforce training, and digitalizing monitoring and scheduling systems.  

This study alims to alnallyze the effect of talste alnd promotion on consumer purchalsing decisions alt McDonalld's Talmaln Pinalng Sidoalrjo. McDonalld's, als one of the lealding bralnds in the industry, hals succeeded in crealting mouth-waltering signalture flalvors alnd developing smalrt promotionall straltegies to influence consumer purchalsing decisions. This resealrch wals conducted alt McDonalld's Talmaln Pinalng Sidoalrjo involving 100 respondents als al resealrch salmple. The resealrch method used is qualntitaltive using multiple linealr regression alnallysis techniques. Daltal wals obtalined through al questionnalire consisting of questions albout talste, promotions alnd purchalsing decisions. The results showed thalt the respondents' responses to the talste of McDonalld's Talmaln Pinalng Sidoalrjo were in the sufficient caltegory, while the responses to promotions were allso in the sufficient caltegory. However, the response to the purchalse decision is in the very good caltegory. The test results of the coefficient of determinaltion show thalt talste alnd promotion caln explalin albout 5.5% of the valrialtion in purchalsing decisions. The remalining 94.5% caln be explalined by other falctors not exalmined in this study. Hypothesis testing allso shows thalt talste hals al positive alnd significalnt influence on purchalsing decisions, while promotion hals no significalnt effect. This study concludes thalt the talste of McDonalld's Talmaln Pinalng Sidoalrjo plalys aln importalnt role in shalping consumer preferences alnd influencing purchalsing decisions. Promotion allso hals aln effect, allthough not staltisticallly significalnt. They need to continue to develop alnd improve their unique flalvors alnd effective promotion straltegies to malintalin their position in the falst food industry alnd meet the expectaltions of consumers who walnt pralcticall alnd quallity food.

A crane is a mechanical device used to move loads from one location to another, with gantry cranes being one of the most commonly used types in the industrial sector, particularly at container terminals. While offering numerous benefits, the use of gantry cranes also presents several risks, such as potential structural failure of the crane, falling loads due to damage to hooks or ropes, and collisions with other objects. Additionally, lifting loads beyond the crane’s capacity can lead to equipment damage and even fatal accidents caused by electric shocks or adverse weather conditions like strong winds and rain. This study aims to identify and minimize workplace accident risks by applying the SWIFT (Structured What-If Technique) method. This method identifies hazards through the "what if" approach and evaluates risks using the Risk Rating Number (RRN), which measures the severity and likelihood of potential hazards. The results of this study show that ARTG and STS gantry cranes have 25% of hazards in the priority one category, while RTG has 20% of hazards in the same priority. From these findings, it can be concluded that risk mitigation should be focused on the ARTG and STS types, which show higher risk proportions. The recommendations from this study are to enhance safety procedures, provide continuous training for operators, and conduct regular crane maintenance to reduce the potential for accidents. By implementing these mitigation measures, it is hoped that workplace safety will be maintained and the risk of workplace accidents at the Semarang Container Terminal can be minimized.

One of PT Pertamina Patra Niaga Fuel Terminal Sanggaran's CSR initiatives is the community-based turtle conservation program, or Turtle Conservation and Education Center Serangan (TCEC), which focuses on biodiversity and community empowerment. With the help of this program, turtles in Serangan Village that are in danger of going extinct will continue to exist. Serangan Village is a top priority when conducting CSR initiatives in the areas of biodiversity and social empowerment because it is part of the company's operational region. The program's main objective is to raise and care for turtles at TCEC, including feeding hatchlings and turtles, examining turtles' health, monitoring, turtle socialization and education, turtle inhealth training, saving turtles from South Bali's beaches and many more. The Poins of SDGs Goal 4 Quality Education, Goal 8 Decent work and Growth Economic, and Goal 15 Life on Land are achieved in part because to this program. 19 local workers were employed by this program, which earns $200 million annually. In order to carry out its duties and responsibilities, the Conservation Office and Turtle Education has an organizational structure filled by managers from traditional villages. The Turtle Conservation and Education Center was initially founded as a result of a village community movement that has a focus on turtle conservation in collaboration with WWF, BKSDA (Nature Conservation Agency; Indonesia), Udayana University Bali and is under the auspices of the traditional village of Serangan. The TCEC released almost 20,000 baby turtles as part of conservation efforts to ensure their survival. A number of G20 Summit attendees paid TCEC Serangan a visit, which demonstrated how the world acknowledged its struggle with turtle conservation. TCEC Serangan is the recipient of numerous national and international honors, including the Kalpataru (the award given to individuals or groups for their services in preserving the environment in Indonesia).

Belawan Port is a strategic port in North Sumatra with export-import activities reaching 5,000 tons per year, making it an important terminal in supporting international trade and regional economic growth. This research examines the role of daily work reports in dry bulk cargo unloading operations at PT. Wahana Intradermaga Niaga Belawan as a Stevedoring Company (PBM) responsible for ensuring the smooth process of loading and unloading at the port. The research methodology employs library research approach and direct field observation. The dry bulk cargo unloading process involves the inaportnet system and operates for 24 hours with three work shifts. Activities include four main types of operations: stevedoring (transferring cargo from ship to wharf), cargodoring (transfer from wharf to warehouse), delivery (shipment outside the port), and receiving (acceptance from factory to warehouse). The daily report document is a list of all cargo unloading activities during 24 hours at wharf 112. Daily work reports function as structured documentation of daily activities, conveying work progress updates, supporting performance monitoring, and serving as a reference for operational evaluation. The report's usefulness includes strengthening accountability, reducing misunderstandings, early problem detection, consistency in task implementation, and orderly documentation of unloading activities. Operational preparation involves permit processing according to port regulations, equipment preparation such as hopper, conveyor belt, grab, excavator, wheel loader, and sling ropes. Supporting documents include Bill of Lading, Cargo List, Cargo Manifest, and various operational reports. Obstacles faced include the influence of bad weather, human resource constraints related to workforce professionalism, and land transportation barriers. Related institutions include cargo owners, PBM, shipping agents, port authorities, PT. Pelindo Belawan, and EMKL companies that coordinate to ensure smooth dry bulk cargo unloading operations.

This research was conducted with the aim of optimizing the assignment of working hours in the Procurement Division of PT. Pelindo Multi Terminal through the application of the Hungarian method. The fundamental problem faced is the imbalance between the number of permanent workers and the high workload that must be completed, thus creating a risk of inefficiency in the operational process. To address this problem, a quantitative approach was used with linear programming modeling techniques designed to produce a more systematic and measurable assignment allocation. Through the analysis conducted, an optimal solution was obtained regarding the distribution of working hours, where the total working time can be reduced to 10,120 minutes per month, lower than the previously set maximum limit of 10,560 minutes per month. These results indicate that the application of the Hungarian method is not only able to reduce excessive workloads on some employees, but also ensures a more proportional distribution of assignments among all available workers. In addition, this method can increase operational effectiveness because each worker receives a load according to their capacity, so that the risk of fatigue or decreased performance can be minimized. The findings of this study confirm that the Hungarian method is an alternative work scheduling strategy that is efficient to be applied in industrial environments with high task complexity. Proper implementation can also support the achievement of overall company productivity, improve the quality of human resource management, and strengthen the company's competitiveness in facing future operational challenges.

The Terminal Loading Area (TLA) API at PT Pertamina Hulu Mahakam functions as a facility for processing oily water before being discharged into the environment. One of the main issues faced is the accumulation of thick floc (oil clumps) due to high emulsions in crude oil, along with the malfunctioning water spray valve on line 1, causing operators to resort to manual spraying using hydrant water. This increases the risk of exposure to hazardous chemicals such as Benzene, Toluene, and Xylene (BTX), which poses a health threat to workers. Therefore, improvements to the water spray system are needed to reduce BTX exposure and enhance the effectiveness of oil-water separation. This study aims to analyze the effectiveness of proposed improvements to the water spray system to reduce BTX exposure and improve the efficiency of oil-water separation. The methodology used includes literature review, field study, and technical testing. Proposed solutions include replacing or repairing the damaged water spray valve, adding piping networks to compartment 2 to distribute water more evenly, and using treated water (produced water) to optimize the system and reduce reliance on hydrant water. The results of the study indicate that replacing or repairing the water spray valve, adding piping networks, and using produced water effectively reduce BTX exposure while maintaining oil recovery effectiveness. The trials also showed that using the Oil Pump (P-3230 & P-3235) provides optimal pressure (8–9 barg) for water spray, compared to the less effective Water Pump (P-3200 & P-3205). Implementing these solutions is expected to reduce BTX exposure for workers, improve oil-water separation efficiency, and contribute to a safer and more efficient working environment.