Jurnal Praktik Keinsinyuran memuat artikel hasil aktivitas praktik keinsinyuran dari berbagai bidang keilmuan teknik. Bidang praktik bidang keinsinyuran sesuai dengan yang diatur pada pasal 5 ayat (1) UU Keinsinyuran. Artikel yang ditulis merupakan artikel yang orisinal, ditulis dalam Bahasa Indonesia atau Bahasa Inggris. Artikel ditulis dengan penyajian pendahuluan, metode pelaksanaan, hasil dan pembahasan, kesimpulan dan saran, ucapan terima kasih, serta daftar pustaka.
Program Studi Profesi Insinyur Universitas Katolik Indonesia Atma Jaya
Analisis Kecelakaan Sengatan Listrik pada Shovel di Lingkungan Kerja PT Freeport Indonesia Affiliated Freeport McMoRan
This analysis aims to find out more about the factors that cause potentially fatal accidents. The analysis is carried out by studying and understanding all information related to these accidents that is reported regularly in meetings and discussions about occupational safety and health in the mining sector within the company This study uses qualitative methods, namely collecting all data and information from various sources to explain the causes of the accident. The results of the analysis showed that the electric shock experienced by the electrician was caused by a human error from the employee himself because he failed to implement the Lockout, Tagout, and Trayout (LOTOTO) procedures and measures to isolate the flow of electrical energy before starting the repair work, resulting in injuries to the left hand, arm, and leg.
Copyright (c) 2026 Jurnal Praktik Keinsinyuran
Analisis Kegagalan Proses Pulling Pipa HDPE PN10 pada Pekerjaan Saluran Kabel Tegangan Tinggi (SKTT) 150 kV
High Voltage Cable Channel Work (SKTT) 150 kV or Underground High Voltage Cable works can be carried out using the Horizontal Directional Drilling (HDD) machine, in accordance with the State Electricity Company Standard (SPLN) T4.003:2023, and is commonly applied in urban areas with high traffic density. This article analyzes the failure of the High Density Polyethylene (HDPE) pipe pulling process in the 150 kV SKTT work at the MRT Jakarta Phase 2A Project, CP 205. The failure occurred due to a time delay of approximately 4 hours between the borehole cleaning process and the pulling operation. This condition resulted in the failure of pulling HDPE PN10 pipes with diameters of 6 inches and 4 inches. Corrective actions were conducted by reaming the original borehole using the same parameters. The pulling operation was then performed immediately after the cleaning process was completed. The evaluation results indicate that eliminating any time delay between the cleaning and pulling processes can prevent borehole collapse and ensure the successful installation of HDPE pipes in 150 kV SKTT works.
Evaluasi Statement of Applicability ISO 27001:2022 melalui Audit Surveilans pada Pusat Data Internal
This study evaluates the effectiveness of the Statement of Applicability (SoA) through an ISO/IEC 27001:2022 surveillance audit on the internal data center infrastructure of PT ABC. The audit was conducted by an independent certification body to verify continual compliance, assess the effectiveness of the Information Security Management System (ISMS), review previous audit results, and identify opportunities for improvement. The audit program was developed in accordance with ISO 19011:2018 and ISO/IEC 17021-1:2015 using a systematic and riskbased approach. The evaluation focused on the alignment between implemented controls and the documented SoA, based on Annex A control domains. No nonconformities or discrepancies were identified, although three Opportunities for Improvement (OFIs) were recorded. The results confirm that the ISMS is compliant and effective, supporting the continuation of ISO/IEC 27001:2022 certification.
Identifikasi Tindakan tidak Aman Pekerja Konstruksi pada Proyek Peningkatan Jalan
Occupational accidents in the construction sector are generally caused by human error, which is recognized as the dominant factor leading to unsafe actions. This condition poses a challenge in the implementation of construction projects that are required to be completed on time while achieving a zero-accident target. This study aims to identify the dominant factors contributing to workers’ non-compliance in performing unsafe actions in the road improvement project of Mekar Jati–Seberang Kota (Continuation) in Tanjung Jabung Barat Regency, Jambi Province. The research employed a descriptive qualitative method through field observations and identification of unsafe actions. The results indicate that the dominant factor causing unsafe actions is incomplete use of Personal Protective Equipment (PPE), with a mean value of 3.00. Low worker discipline, discomfort in using PPE, habitual work without PPE, and weak project supervision are the main factors increasing the risk of occupational accidents.
Analisis Penggunaan Mesin Empty Bunch Press di PKS Aek Raso PT. Perkebunan Nusantara IV Regional 1
Aek Raso Palm Oil Mill is one of the palm oil mills under the management of PT. The Nusantara IV Regional 1 Plantation. It has been operating since 1994 with capacity 30 Tons/Hour. In 2024, PKS Aek Raso received Empty Bunch Press Machine to reduce the losses on empty oil palm bunches. Before the use of Empty Bunch Press machine, the losses on empty bunches of oil palm could be 2-3%. The purpose of this study is to find out how much influence and effectiveness the use of the Empty Bunch Press machine has on the productivity of obtaining Oil Extraction Rendement (OER) of palm oil in the Aek Raso PKS. For this reason, a calculation analysis was carried out on fresh fruit bunches (FFB) to obtain oil loss before and after being pressed by the machine and to find out how much percentage increase in palm oil yield was obtained from using the Empty Bunch Press machine. After the use of Empty Bunch Press machine, lossses on empty oil palm bunches on the On Sample can be reduced into 1 – 2%. The results can be used as evaluation to ensure that the investment in purchasing the machine is appropriate, has the right objectives and is on target.
Analisis Uji Performa PLTS 110 kWp di Universitas Pamulang dengan Menggunakan Alat Ukur Seaward
Pamulang Viktor University has implemented renewable energy through the construction of a 110 kWp On-Grid Rooftop Solar Power Plant (PLTS) in Viktor Building B as a strategic step to reduce dependence on PLN electricity supply. This project involved voltage measurements using the Seaward Solar Survey 200R and inverter performance monitoring to ensure system reliability. Monitoring results showed voltage variations influenced by weather conditions, with the highest voltage achieved on the third day of measurement and the lowest voltage on the second day. Evaluation of solar panel performance compared to manufacturer's specification data showed a match between the actual voltage measured and the panel's working voltage value based on the datasheet. Thus, the PLTS system was declared feasible and in accordance with operational standards, and supports the institution's efforts in implementing clean energy and energy efficiency.
Metode Injeksi Resin Polyurethane untuk Rektifikasi Kebocoran Air pada Dinding Diafragma
Diaphragm wall (D-Wall) in underground structures, such as Mass Rapid Transit (MRT) stations, often face problems of groundwater infiltration issues through construction joints or concrete cracks. These leaks have the potential to cause structural damage (reinforcement corrosion), disrupt work schedules, and cause operational disruptions. This study aims to documentation and analyzes the water leakage repair methods applied to the D-Walls at Thamrin and Monas Station of the Jakarta MRT Phase 2A Project. The method used is a two-stage injection using polyurethane (PUR) resin. This method involves drilling the leak point at a 45-degree angle, installing a packer, injecting water-reactive PUR to temporarily stop the water flow (Sika Injection-101 h), followed by injecting elastic PUR resin for permanent sealing (Sika Injection-201 CE). The analysis results show that PUR injection is a fast, effective, and flexible non-structural solution for addressing active leaks underground with high water pressure, providing a long-term waterproof solution without requiring massive structural demolition.
Analisis Perencanaan Sistem Proteksi Petir Eksternal Gedung Bertingkat Menggunakan Metode Rolling Sphere (Studi Kasus: The Arumaya Office Jakarta)
Lightning strike is a significant risk for human safety and infrastructure reliability, specific to the tropical country, Indonesia faces risk on high intensity of lightning strike and specific characteristics that differs to another region. This led to demand for specific standardize lightning protection system planning to minimize risk of structural damage or even electricity failure. A few approaches have been widely applied such as protection angle method, and mesh method. However, studies explained that those methods face a limitation and ineffective for high rise building. Thus, this research is conduct to apply a proper and standardize rolling sphere method by SNI-03-7015-2004 and IEC 62350. The research object is the project of “The Arumaya Office” and it shows that this project has Protection Class III with 90% efficiency and peak current up to 10 kA. This result is used to design the protection zone, air terminal placement and the material utilized.
Management of Change (MOC) as Technical and Cost Risk Control in FEED–EPCI Transition
The transition from Front-End Engineering Design (FEED) to Engineering, Procurement, and Construction (EPCI) is a critical phase in upstream oil and gas projects, where design maturity, cost, and schedule risks are highly exposed. This study examines the implementation of Management of Change (MOC) as a risk control mechanism during the FEED–EPCI transition phase. Using a qualitative case study approach, this paper analyzes how a structured MOC process supports engineering governance by ensuring systematic evaluation, approval, and traceability of changes. The results show that effective MOC implementation enhances decision-making quality, improves risk visibility, and mitigates potential cost and schedule impacts during project phase transition.
Potensial Objek Audit Berdasarkan Temuan Pada Audit Ketaatan Berbasis Risiko di Kantor Pos Cabang Jakarta dan Sekitarnya
In carrying out its functions, Internal Audit conducts the planning and execution of audits on Auditees—namely, work units at branch post offices—by the Representative Office Internal Audit team and delivers the Audit Report to relevant stakeholders. This study aims to determine Potential Audit Objects derived from findings of Risk-Based Compliance Audits at branch post offices as documented in the Audit Reports. The identification of these objects is intended to ensure that internal audit implementation remains effective and efficient, as expected by the Company, in this case PT Pos Indonesia. This research is a case study based on risk-based compliance audit findings from nine branch post offices in Jakarta and surrounding areas during the 2024–2025 period. The findings indicate that (1) Potential Audit Objects are derived from audit issues that occur with a percentage exceeding 50%, along with an analysis of their causes and impacts, (2) Potential Audit Objects enhances the effectiveness and efficiency of risk-based compliance audits and is recommended as an effective and efficient method for PT Pos Indonesia’s management.
Supply Chain in Healthcare: a Systematic Literature Review
This study aims to map the development of Healthcare Supply Chain research by analyzing the distribution of scientific articles based on annual publication trends, research sectors, authors’ countries, study categories, and journal types. A systematic literature review method was employed to examine prior studies on supply chain management in the healthcare sector, particularly hospitals. The findings indicate that healthcare supply chain research has evolved in a multidisciplinary manner, with dominant themes including supply chain risk management, system resilience, integration, and digital technology adoption such as big data, IoT, and blockchain. Theoretical frameworks such as TAM, TPB, and UTAUT are widely applied. This study identifies existing research gaps and provides recommendations for future research, especially in strengthening healthcare supply chain risk management in developing countries.
Penerapan Cara Pembuatan Kosmetik yang Baik (CPKB) untuk Menjamin Keamanan Produk dan Meningkatkan Daya Saing Perusahaan
Good Manufacturing Practices (GMP) for Cosmetics are quality guidelines established by the Indonesian National Agency of Drug and Food Control (BPOM) to ensure that cosmetic products are safe, high-quality, and consistent. However, studies on the implementation of GMP in medium-scale cosmetic companies remain limited, creating a research gap that needs to be addressed to understand its challenges and effectiveness. This study aims to analyze the implementation process of GMP in medium-scale cosmetic companies, covering aspects such as quality management, personnel, buildings, equipment, sanitation, documentation, production, quality control, and internal audits . The findings indicate that consistent application of CPKB can improve production efficiency, reduce defective products, and strengthen consumer trust in the products, thereby enhancing the company’s competitiveness in an increasingly competitive market.
Metode Pelaksanaan Pekerjaan Erection Struktur Baja pada Fasilitas Refinery (Studi Kasus: RDMP Kilang Pertamina Balikpapan)
The Refinery EPC Project is a construction project with a high level of complexity. Steel structure installation is one of the main tasks,and steel structures being used in several main facilities at the refinery. The purpose of this study is to identify efficient methods for carrying out work on the Refinery EPC Project. The methods used in this study were literature review and data collection through direct observation of the work area, and the information obtained will be compile into a document. The results of this study was the steel structure erection method is carried out systematically and sequentially, and that quality control stages are an important part of carrying out each stage of work with reference to the approved ITP. The recommended stage from this study is the Ground Assembly stage, which is related to reducing the risk of work accidents and the efficiency of crane mobility time.
Peran Surveyor dalam Mendukung Program Zero Accident pada Industri Maritim
The maritime industry demands a high level of safety to achieve a Zero Accident condition, particularly in relation to the structural integrity of vessels. Classification surveyors play a strategic role in ensuring that ships comply with the applicable technical and regulatory standards of classification societies. This study describes the role of surveyors in supporting the Zero Accident program through technical verification, structural inspection, regulatory compliance assessment, and engineering-based recommendations. A case study of bottom plate Ultrasonic Thickness Measurement (UT) is presented to illustrate the application of engineering judgement within the classification survey process. The results show that surveyors ensure that inspection procedures are conducted in accordance with established standards, verify structural conditions against the minimum requirements of BKI Rules and provide technical recommendations whenever non-conformities are detected. Therefore, the role of surveyors directly contributes to achieving a Zero Accident environment in the maritime industry through the implementation of accountable and evidence-based engineering principles.
Maritime Engineering,Classification Surveyor
Penggunaan Alternatif Gas Non Elpiji Untuk Pemotongan Plat Di Workshop Pabrik Kelapa Sawit
The demand for LPG gas at the Sei Silau Palm Oil Mill (PKS Sei Silau) for plate and metal cutting activities in the technical workshop is relatively high, while the cost of LPG refills is comparatively expensive, thus encouraging the need for innovation in alternative fuels. This research and innovation aim to identify a more efficient and economical alternative fuel gas to replace LPG, offering comparable or better performance while remaining safe for use in an industrial environment. The research method employed an experimental approach involving the design of a modified gas cylinder and testing the use of Pertalite as an alternative fuel. Through stages of brainstorming, design, experimentation, and evaluation, the results showed that Pertalite can be effectively used as an alternative fuel substitute for LPG. In addition to being more cost-effective, the non-LPG alternative gas proved to be more fuel-efficient, with a consumption ratio of 1:2 compared to LPG. This finding was validated through experiments conducted in the workshop, where one 3-kg cylinder of non-LPG alternative gas achieved the same cutting performance as two 3-kg LPG cylinders when used for cutting metal and steel plates.
Copyright (c) 2025 Jurnal Praktik Keinsinyuran
Pemeriksaan Dan Pengujian Pesawat Angkat Angkut Jenis Tower Crane
Lifting and transporting equipment, especially tower cranes, play a crucial role in the construction and manufacturing industries. This equipment is used to lift and move heavy materials in project areas with high efficiency. However, non-standard operation can lead to fatal accident risks, including load falls, structural failure, and worker injuries. Routine inspections of tower cranes are carried out to ensure that all components are functioning properly and in accordance with applicable safety standards. This activity takes technical data and the history of the use of lifting and transporting equipment in the work area to assess the suitability and safety factors. The inspection and testing procedures are carried out in several steps, including the use of a guide in the form of a standard checklist form, then a document check is carried out; physical visual inspection and dimensions; and load and function testing. Steel wire rope is safe to use for tower crane structures within a radius of 60 meters with a lifting capacity of 2.4 tons. There was no decrease in the hoist motor during the static load test. There is a modification to the hook used to replace the safety latch by welding it to the hook body. The Operator's SIO meets class I requirements with a tower height of ± 70 meters.
Analisa Tegangan Pipa untuk Kebutuhan Reverse Engineering Pipa Penyalur
This study aims to evaluate the structural integrity of the piping system and optimize its design. The method began with the collection of actual data from piping system which was then input for modeling and simulation using AutoPIPE software. Analysis which was done: calculating stress due to sustained loads (internal pressure, pipe/fluid weight) and occasional loads (earthquakes), as well as examining the forces on the pipe and supports, displacement, and rotation of the pipe. Initial results indicated high stress (ratio above 1.0) under the combined sustained and earthquake loads, indicating that the initial design does not meet safety standards. As a solution, additional pipe supports at critical points were recommended. By adding appropriate supports, the stress on the pipe due to the combined sustained and earthquake loads was successfully reduced to the design code's allowable limits. This was very effective in improving the safety and compliance of piping systems with standards, reducing the risk of failure, and ensuring stable operation.
Matrix Acidizing Menggunanakan Chemical Flooding Sensitive Gel (FSG) untuk Mengatasi Masalah Kepasiran di Sumur ASY-22 Lapangan Pangkalan Susu PT Pertamina Hulu Rokan
This article presents an evaluation activity to address the production of sand as an undesirable issue in oil production wells. This causes damage to surface facilities and downhole equipment, as well as a decrease in well efficiency. The work performed with Matrix Acidising began by using acid and the main chemical Flooding Sensitive Gel (FSG), which aims to bind sand particles within the well reservoir to the productive formation and increase permeability around the wellbore. After that, it was followed by a holding period of 24 hours and then the installation of an artificial lift pump to enable production. Additionally, the importance of calculating the safety zone and selecting the appropriate testing equipment to ensure workplace safety and the accuracy of results was discussed. The test results show that the productivity index (PI) and flow efficiency (FE) parameters increased in value, while the skin factor (S) parameter decreased.
Penerapan Wavelet Transform pada Analisis Error Pembacaan Internal Measurement Unit dengan Berbagai Variasi Level Cairan pada Tangki Drone Sprayer di PT. Frogs Indonesia Yogyakarta
Sloshing in the drone sprayer tank can disrupt IMU readings and reduce control stability. This study evaluates the influence of 1–5 liter liquid levels on IMU errors and the effectiveness of DWT using the Daubechies 4 basis with three decomposition levels, where D1 was removed, D2 was processed with soft thresholding, and A3–D3 were retained. The highest errors occurred at 1–2 liters, indicated by higher RMSE values. After denoising, RMSE decreased significantly up to 65.90% on the y-acceleration axis demonstrating that DWT is effective in reducing noise and improving sensor accuracy to maintain drone stability under dynamic conditions.
Analisis Pengaruh Faktor-Faktor Penerimaan Penggunaan AI Terhadap Efektivitas Kerja Karyawan Pada Divisi Procurement SMART Tbk
The rapid advancement of Artificial Intelligence (AI) has significantly transformed the workplace, particularly in enhancing business efficiency and effectiveness. However, its successful implementation relies not only on technological capability but also on the level of user acceptance. This study aims to examine the influence of AI acceptance factors on employee work effectiveness within the procurement division of PT SMART Tbk. The variables analyzed include perceived ease of use, perceived usefulness, attitude, and system quality, derived from the Technology Acceptance Model (TAM) and the DeLone & McLean IS Success Model. A quantitative research method was employed by distributing questionnaires to employees in the targeted division. The collected data were analyzed using Partial Least Squares (SmartPLS) to test the relationships among variables within the research model. The results reveal that none of the variables exert a significant effect on employee effectiveness. These findings indicate that technological factors alone are insufficient to enhance work outcomes; instead, continuous training, improved system quality, and effective change management strategies are necessary to foster optimal AI adoption.
Efisiensi Energi pada HVAC dengan Pengendalian Dinamis AHU Berbasis PLC
Common implementation of HVAC in high rise buildings involves combination of multiple AHUs, chillers and cooling towers. Where the adaptive operation only happens with the chillers as the chilled and cool water circulates between AHU – chiller – cooling tower. This paper is the design and implementation of adaptive AHU operation based on the supply and return air of each AHU within the HVAC system. The usage of PLC as local controller, multiple sensor and actuators within the AHU system (thermocouple sensor, pressure transmitter, air temperature –humidity sensor, air damper position sensor), common area & outdoor air temperature – humidity sensor, VSD, motorized valve, motorized fresh air damper, power meter, PLC and networked control system will ensure adaptive and programmable system suitable for various AHU operation and installation conditions. With the target temperature of 25℃ in the common area, the system dynamically adjust the actuators to keep temperature within +/- 1C° range. Within the implementation, the energy usage on the AHU system itself can be lowered from 100% to 65% - 73%.
Analisis Strategis Poros Penggerak Listrik Terintegrasi dalam Peningkatan Kemampuan KRI
This study analyzes the advantages and challenges of using an Integrated Electric Propulsion System on the Republic of Indonesia Warship (KRI) using a qualitative descriptive approach. Data were collected through literature studies in the fields of defense and marine technology. The results of the study indicate that this system offers significant improvements in maneuverability, speed, and noise and vibration reduction, which are very important in the context of military operations. Although there are challenges related to high initial costs and more complex maintenance requirements, the long-term benefits of energy efficiency and reduced operational costs make this system a strategic choice for the Indonesian Navy. Thus, the implementation of an integrated electric drive shaft not only increases the combat readiness of KRI, but also strengthens Indonesia's position as a competitive maritime power in the region. This study is expected to provide recommendations for the development of a more modern and adaptive defense policy to global technological developments.
Pengaruh Beban Sealer Terhadap Baut Penekan Mesin Sachet Akash
This study investigated the effect of sealing load on the pressing bolts of the Akash sachet machine used at PT Unilever Indonesia. Using Fuji film as a pressure indicator, the pressure distribution on the sealing surface was analyzed and converted into quantitative force data. Subsequently, we calculated the load received by each bolt and compared it to the maximum tensile strength of the bolts through tensile testing. The results showed that the load applied to each bolt is well below the material's yield strength, confirming the bolts’ capability to perform safely and reliably under operational conditions. These findings provided insight into optimizing sealing performance and ensuring the mechanical reliability of the machine.
Penilaian Perpanjangan Sisa Umur Layan (Residual Life Assessment) Pressure Vessel Menggunakan Metode Fitness For Service
Residual life assessment (RLA) is a crucial step to ensure the reliability, safety, and operational efficiency of equipment that has exceeded its design life or shows signs of aging. This study was conducted on the Gathering Station (GS) VI Talang Jimar, owned by PT Pertamina EP Zone 4 Field Prabumulih, with the aim of evaluating the current condition of the equipment, estimating the remaining operational life, and providing recommendations regarding necessary maintenance or replacement actions. The Risk-Based Inspection (RBI) method and the Reliability Block Diagram (RBD) approach were used in this analysis to map risks, evaluate system reliability, and provide accurate estimates of the remaining life. Data were obtained through visual inspection, process verification, thickness measurements, non-destructive testing, dimensional measurements, and material analysis. The analysis results show that some equipment requires special attention regarding structural and operational integrity.
Pemodelan dan Simulasi Proses Flash Separation Condensate untuk Optimasi RVP Produk CPF Lapangan-X
This research aims to optimize flash drum operating conditions at Field-X Central Production Facility (CPF) with a condensate production capacity of 50 barrels per day (bpd). Simulations were conducted using DWSIM software version 8.8.1 with the Peng-Robinson thermodynamic model, varying pressure (5, 10, 15, 20 psig) and temperature (50, 55, 60, 65, 70°C). Simulation results indicate that pressure increases at constant temperature enhance condensate flow rate, while temperature increases reduce RVP values but increase energy requirements. At 5 psig pressure and 50°C temperature, optimal performance was achieved with an RVP of 10.33 psia and an efficiency ratio of 10.30 bpd/kW. However, gravity flow design considerations led to the selection of 10 psig pressure with operating temperatures of 60-65°C. This study provides operational recommendations that balance product specifications, energy efficiency, and system technical constraints.
Root Caused Failure Analysis Deodorizer Column at Expansion Bellow and Vacuum Chamber Connection to Column in Refinery Plant
Vacuum chamber that connecting the deodorizer column to the condenser had collapsed. The leaks were potentially occurring prior to the collapse of the vacuum chamber. The loading and unloading operation could make a fluctuating dynamic stress. In addition to the fluctuating dynamic stresses, fatigue failure mechanism had occured. The crack developed and gradually propagated in the welded joints which welded on the site due to it was proved have low mechanical properties as shown in tensile test. Follow the welding procedure specification (WPS) document, inspect the preparation of the welding process to ensure that the single-V groove is being prepared appropriately, inspect the weld during and/or after the welding process to ensure that it has achieved complete joint penetration and employ another non-destructive testing method, such as radiography, to verify the completeness of the joint penetration are recommended to prevent the similar failure in the future.
Implementasi Automatic Transfer Switch Ganda pada Sistem Tiga Fasa untuk Sumber Cadangan Listrik Satu Fasa
Alternating current electricity is commonly transmitted in two ways, single phase and three phase. Three phase is commonly used in industrial settings for manufacturing lines meanwhile single phase load are powered by tapping one of the three available phases. This research delves into installation of an Automatic Transfer Switch to provide redundant single phase supply using two ATS units wired in a way to automatically tap into any active one phase out of the three phase supply. The result is that dual ATS system is capable of providing single phase electricity as long as there is one active phase out of the three phase supply.
Comparison for Assessment of Pipeline Integrity with ASME B31.8 and ASME B31.G
Integrity assessment is a critical process in the oil and gas industry to prevent pipeline failures such as leaks or ruptures. This study evaluates a gas pipeline's integrity using two assessment methodologies: the conventional design code (ASME B31.8) and the defect-specific method (ASME B31G). An in-line inspection (ILI) conducted in June 2024 revealed the maximum corrosion depth with a depth-to-thickness ratio (d/t) of 0.35. The design code assessment classified the pipeline as potentially unsafe due to wall thickness falling below the minimum requirement. In contrast, the ASME B31G assessment showed the pipeline could safely withstand the design pressure. The comparison highlights the conservative nature of design codes and underscores the importance of defect-specific assessment in accurately determining residual life and optimizing maintenance strategies.
Implementasi Cooling as a Service (CaaS) pada Fasilitas Industri Bbraun Karawang, Indonesia
An efficient and reliable cooling system is essential for pharmaceutical operations, which are highly sensitive to temperature and humidity and depend on chilled water supply. At the B. Braun facility, the existing aircooled chiller showed declining performance and inefficiency, operating at 1.61 kW/TR with maintenance and operational limitations. To address this, a Cooling as a Service (CaaS) model was implemented by replacing it with a higher-efficiency water-cooled chiller with a better coefficient of performance. This upgrade achieved a 51% reduction in energy consumption. Under the 10-year CaaS contract, the Energy Service Company (ESCO) is responsible for investment, design, construction, operation, and maintenance, with asset ownership transferred to B.Braun at contract end. This study evaluates the technical and commercial performance of the CaaS implementation and the shift from CAPEX to OPEX, showing improved energy efficiency, reduced CO₂ emissions, and enhanced long-term reliability and flexibility.
Proyek Implementasi Instalasi Kelistrikan pada Usaha Mikro
Street coffee carts, as a form of micro-enterprise, often rely on 3-kg LPG gas and power banks to support their operations, particularly for lighting and water heating. However, this system has limited energy capacity and poses high safety risks. This report discusses the implementation of an alternative electrical system that is safer and offers more functionality by using a 12V car battery and a 1000W inverter as the energy source. The new system replaces the use of 3-kg LPG gas and power banks for powering heaters and LED lights, while still prioritizing Occupational Health and Safety (OHS) aspects. The analysis shows that the new design can provide a greater electricity supply (up to 720 Wh), allowing LED lights to operate for 11 hours and electric heaters for more than one hour. In addition, the system reduces the risk of fire caused by gas leaks and short circuits from wiring. This study demonstrates that a simple engineering approach can offer practical, efficient, and safe solutions for micro-entrepreneurs in urban environments.