INTERNATIONAL JOURNAL ON ADVANCED TECHNOLOGY, ENGINEERING, AND INFORMATION SYSTEM

Risk Management Analysis of the Clean Water Pipeline Construction Project of PT CATL Karawang Using the HIRARC Method

2025-12-02T04:39:08+00:00

Construction activities for water pipeline projects in industrial facilities present various occupational and operational hazards that may disrupt project performance if not properly controlled. This study aims to analyze the occupational risks associated with the water pipeline construction project of PT CATL Karawang using the Hazard Identification, Risk Assessment, and Risk Control (HIRARC) method. The research was conducted through field observation, work breakdown structure analysis, and semi quantitative risk assessment based on likelihood and severity scoring. The results indicated ten (10) dominant hazards across five (5) major activities including trench excavation, pipe lowering, pipe joint installation, backfilling and compaction, pressure testing, and site restoration. Three (3) risks were categorized as high level, namely trench collapse, pipe dropping during lifting, and stuck by heavy equipment, while the remaining risks were classified as medium level. Appropriate risk controls are recommended following the hierarchy of control, emphasizing engineering controls, administrative procedures, and mandatory use of personal protective equipment. The study concludes that the overall risk category of the project is moderate, high and requires consistent monitoring and implementation of control measures to reduce the probability of incident and ensure safe and continuous project execution.

Analysis of Power Losses Due to Load Imbalance and Loss Calculation in Distribution Transformers: Merauke City Customer Service Unit

2025-12-26T10:06:34+00:00

This study analyzes power losses due to load imbalance and the calculation of losses in distribution transformers at the Merauke City Customer Service Unit (ULP). The results show that most distribution transformers on the Angkasa, Bampel, Parako, Kompi, and Ermasu feeders experienced load imbalances exceeding the 20% tolerance limit according to SPLN D3.002-1:2014 standards, contributing to increased neutral currents and power losses, particularly in transformers with heavy loads and uneven phase distribution. After phase current balancing using ETAB 19, significant reductions in neutral current and losses were observed, with transformer efficiency increasing by an average of 2-5% per unit. A feeder-based, data-driven balancing strategy, involving the redistribution of load from dominant phases to deficit phases along with regular monitoring, proved effective in improving distribution system efficiency, extending transformer lifespan, and enhancing voltage quality for customers. These findings provide an operational basis for PLN ULP Merauke to prioritize distribution network improvements, maintain a minimum bus voltage profile of 93–95%, and reduce operational costs through regular load balancing.

Analysis of Construction Project Duration Acceleration Through Workforce Addition Using the Crashing Method at SD Negeri 2 Murtajih Building

2026-01-16T08:13:48+00:00

Delays in the completion of construction projects remain a major problem, particularly in the construction and rehabilitation of educational buildings, which require precision in terms of time, cost and quality. One effort to address this problem is accelerating the project duration through the crashing method. Therefore, this study aims to analyze the acceleration of construction project duration through the addition of workforce using the crashing method in the rehabilitation project of SD Negeri 2 Murtajih, Pamekasan Regency. The research method used is a quantitative descriptive method with a case study approach, using secondary data in the form of a time schedule, budget plan (RAB), S curve, and project progress reports. The analysis was conducted by determining normal workforce productivity, crashing productivity, normal duration, crash duration, and the percentage of time acceleration due to the addition of workforce. The results showed that adding workers significantly accelerated the implementation duration. For instance, in the brick wall and tile floor installation, which had a normal duration of 10 days, adding 15 workers resulted in a crash duration of 7 days with an acceleration of 33%, while adding 17 workers resulted in a crash duration of 6 days with an acceleration of 41%. In conclusion, the crashing method proved effective in accelerating the project duration, despite impacting increased workforce costs. Thus, optimal acceleration planning is required to achieve a balance between time savings and additional costs for more efficient and economical project implementation.

Analysis of Human, Environmental, and Vehicle Factors Affecting Traffic Accident Severity in Jurisdiction of Metro Jaya Police

2026-04-09T07:28:55+00:00

The jurisdiction of the Jakarta Metropolitan Police (Polda Metro Jaya) is one of the areas experiencing traffic accident problems. Traffic accidents in the Jakarta Metropolitan Police jurisdiction can involve two-wheeled vehicles, four-wheeled vehicles, trucks, and even pedestrians. Accidents can be assessed based on the severity of the accident, usually classified as mild, moderate, and severe. Accident severity in this study focuses on human, environmental, and vehicle factors. This study aims to determine the most important sub-factors that increase the severity of traffic accidents in the Jakarta Metropolitan Police jurisdiction. The theories used in this study are transportation theory and human error theory. This study uses accident data in the form of the Integrated Road Safety Management System (IRSMS) from the Police, which is tested using Structural Equation Modeling (SEM), and validated using questionnaire data collected through a Google Form survey analyzed using partial least squares (PLS). The results of the IRSMS data analysis indicate that attention and drowsiness are strong predictors of increased severity. The results of the survey analysis indicate that drowsiness and vehicle age are significant predictors of severity. The validation results of the Integrated Road Safety Management System (IRSMS) data analysis and questionnaire provide a comprehensive picture of the complexity of the causes of the severity of accidents that can be experienced.

Analysis of Passenger Transport Mode Choice Between Bus and Airplane to Improve Service (Case Study: Palembang-Jakarta Route)

2026-03-05T05:25:36+00:00

The development of public transport in Indonesia is an important factor in supporting community mobility, especially in inter-city travel. This study aims to analyze the factors that influence the choice of transport mode between buses and airplanes on the Palembang-Jakarta route. This study uses the binary logistic regression method to identify the probability of users choosing one mode of transport based on various factors. Inter-city mobility in Indonesia is increasing, especially for travel between Palembang and Jakarta. The choice of efficient modes of transport is an important factor for users, with two main modes available, namely buses and airplanes. This study aims to analyze the factors that influence the choice of transportation mode by considering variables such as travel costs, travel time, comfort, safety, and accessibility. The research method used is binary logistic regression, which allows for the analysis of the probability of mode selection based on influential factors. Data was collected through a questionnaire survey involving respondents who had travelled from Palembang to Jakarta. Based on the results of the study, optimization of public transport services is needed to improve competitiveness and enhance travel comfort and safety. This study provides insights for transport service providers and policymakers in designing more efficient and sustainable transport policies.