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Venus: Jurnal Publikasi Rumpun Ilmu Teknik
Published by Asosiasi Riset Ilmu Teknik Indonesia
ISSN : 30315026     EISSN : 30313481     DOI : 10.61132
Core Subject : Science, Engineering,
Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Engineering
Engineering Science Clump. include the sub-groups of Civil Engineering and Spatial Planning, Industrial Engineering, Electrical and Computer Engineering. The Research Journal of the Engineering Science Clump
Arjuna Subject : Teknik (semua kategori) - Tenik Industri dan Manufaktur
Articles 326 Documents
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Evaluasi Perhitungan Volume Stockpile Batubara dengan menggunakan Alat Total Station di PT. Bukit Baiduri Energi, Kabupaten Kutai Kartanegara, Provinsi Kalimantan Timur Muhammad Rofy Fauzan; Henny Magdalena; Lucia Litha Respati; Windhu Nugroho; Albertus Juvensius Pontus
Venus: Jurnal Publikasi Rumpun Ilmu Teknik  Vol. 4 No. 2 (2026): Venus: Jurnal Publikasi Rumpun Ilmu Teknik
Publisher : Asosiasi Riset Ilmu Teknik Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61132/venus.v4i2.1366

Abstract

Coal stockpile volume measurement is an essential part of mining production control. This study aims to evaluate the calculation of coal stockpile volume using a Total Station (TS) at PT. Bukit Baiduri Energi, Kutai Kartanegara Regency, East Kalimantan Province, and to assess the accuracy and effectiveness of this method in operational activities. Data acquisition was carried out through direct field measurements using a Total Station with a detailed surface point survey method. The collected data were processed using Minescape 5.7 software to generate a triangulated surface model, and the volume was calculated using the Cut and Fill method. The results show that the Total Station method produced a stockpile volume of 21,069.15 m³ with a high level of accuracy due to direct field measurement. This method provides advantages in elevation data accuracy; however, it requires relatively more time and manpower during the data acquisition process. Based on these findings, the use of Total Station is recommended for stockpile volume calculations that require high accuracy, particularly for production evaluation and coal reserve reporting.
Analisis Lama Waktu Pemanasan dan Rasio Komposisi Oli terhadap Peningkatan Kualitas Batubara menggunakan Metode Upgrading Brown Coal Ferry Samuel Maringan Siregar; Windhu Nugroho; Henny Magdalena; Agus Winarno; Rety Winonazada
Venus: Jurnal Publikasi Rumpun Ilmu Teknik  Vol. 4 No. 2 (2026): Venus: Jurnal Publikasi Rumpun Ilmu Teknik
Publisher : Asosiasi Riset Ilmu Teknik Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61132/venus.v4i2.1367

Abstract

Low-rank coal generally has a high moisture content, which results in a low calorific value and suboptimal quality for utilization as an energy source. One method that can be applied to improve coal quality is the Upgrading Brown Coal (UBC) process, which functions to reduce moisture content and increase fixed carbon value. This study aims to analyze the effect of heating time and the ratio of used oil composition on improving coal quality based on proximate parameters. The research method includes collecting coal samples from four locations in Samarinda and its surrounding areas, namely SMAN 1 Samarinda, Bhineka Street, Palaran Stadium, and Tani Bakti Village. The samples were analyzed using proximate analysis, including inherent moisture (IM), ash content (AC), volatile matter (VM), and fixed carbon (FC), both before and after the UBC process. The upgrading process was carried out with variations in heating time and used oil composition as a coating medium to enhance coal stability and prevent moisture reabsorption. The final results of the upgrading process showed the best values of inherent moisture at 13.64%, ash content at 4.66%, volatile matter at 55.06%, and fixed carbon at 44.94%. The results indicate that the UBC process is capable of reducing inherent moisture and increasing fixed carbon, thereby improving coal quality. Variations in heating time and used oil composition have a significant effect on changes in proximate parameters. Longer heating time and an appropriate ratio of used oil composition result in a more optimal improvement in coal quality.
Pembuatan Perontok Jagung Berdiameter 200x600 mm dengan 48 Tonjolan untuk Kapasitas 100 kg/Jam Syamsul Hadi; Amiruddin Abdullah; Yohanes Benediktus Yokasing; Adi Susanto; Agustinus Deka Betan
Venus: Jurnal Publikasi Rumpun Ilmu Teknik  Vol. 4 No. 2 (2026): Venus: Jurnal Publikasi Rumpun Ilmu Teknik
Publisher : Asosiasi Riset Ilmu Teknik Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61132/venus.v4i2.1387

Abstract

The problems faced in threshing corn kernels from the cob are still done manually which requires a lot of energy and time. The purpose of making a corn thresher is to obtain lower energy and time requirements for threshing corn kernels. The method of making a corn thresher includes: protrusion design from an M6 L-key bolt measuring 10×25 mm with a strength of 370 MPa, installation of a 19 mm protrusion position in a spiral at an angle of 45o through a bolt thread on a threshing rotor with a diameter of 200 mm and a length of 600 mm with a total of 48 protrusions, making threshing device components with an angle of 15o, assembling components, testing the device at a rotor speed of 700 rpm from a motor speed of 1400 rpm which is reduced by a V belt and Pulley for hybrid corn variety Nusa-01 with a maximum water content of 14%, a corn fruit diameter of about 50 mm and a length of about 20 cm, evaluation of the device and threshing results. The result of making corn thresher is a cylindrical protrusion from an M6 L-key bolt measuring 10×25 mm with a strength of 370 MPa, the position of the 19 mm protrusion is spirally angled at 45o through the bolt thread on the thresher rotor with a diameter of 200 mm and a length of 600 mm, the number of protrusions is 48 pieces, the production cost is IDR 212,000, the duration of the production process is 240 minutes/unit which implies that corn can be threshed with corn kernel destruction of less than 7%.
Analisis Pengaruh Powder Factor terhadap Flyrock dengan Metode Richard & Moore di PT. Sims Jaya Kaltim Kabupaten Paser Kalimantan Timur
Venus: Jurnal Publikasi Rumpun Ilmu Teknik  Vol. 4 No. 1 (2026): Venus: Jurnal Publikasi Rumpun Ilmu Teknik
Publisher : Asosiasi Riset Ilmu Teknik Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61132/venus.v4i1.1339

Abstract

One of the risk impacts of blasting activities is flyrock. The impact of flyrock can be minimized by evaluate the factors that influence flyrock such as blasting geometry. Flyrock cannot be completely eliminated but flyrock distance can be reduced to prevent damage. This study aims to determine the actual maximum flyrock distance in the field and the factors that influence the flyrock distance. This study was conducted at PT. Sims Jaya Kaltim, Paser Regency, East Kalimantan Province. This research was conducted 31 times and the average throwing distance was 79.8 meters, the actual maximum flyrock throwing distance was 134.3 meters and the minimum throw was 40.5 meters. In the flyrock throw prediction, the Richard & Moore calculation method was used with a face burst mechanism of 121.3 meters and cratering of 232.2 meters and the Ebrahim Ghasemi dimensional analysis method of 104.5 meters. From both methods, the Ebrahim Ghasemi method was found to be closest to the actual flyrock with a standard deviation of 29.49 meters and an error percentage of 2.90%. From the results of the correlation between the blasting parameters and the actual flyrock, it was found that the factors that influence the occurrence of flyrock are powder factors, so an analysis was carried out to obtain a maximum flyrock throwing distance of 90 meters so that the safe radius of the tool is 180 meters, then the maximum powder factor used is 0.14 kg/m3.
Analisis Pengaruh Kadar Air dan Porositas terhadap Kuat Tekan, Kuat Tarik, dan Kuat Geser pada Batupasir Formasi Balikpapan dan Pulau Balang, Kabupaten Kutai Kartanegara Weggie Atanasius Tonapa; Albertus Juvensius Pontus; Rety Winonazada; Tommy Trides; Ardhan Ismail
Venus: Jurnal Publikasi Rumpun Ilmu Teknik  Vol. 4 No. 3 (2026): Juni: Venus: Jurnal Publikasi Rumpun Ilmu Teknik
Publisher : Asosiasi Riset Ilmu Teknik Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61132/venus.v4i3.1392

Abstract

Compressive strength, tensile strength, and shear strength are the primary parameters used to evaluate the mechanical capacity of rocks to withstand loads, endure tension, and resist shear forces. The physical property variables believed to influence these mechanical properties are moisture content and porosity. Moisture content and porosity represent the percentage of water and the volume of pores or voids within the rock, expressed in percent (%). Therefore, this study aims to analyze the influence of moisture content and porosity on the mechanical strength of rocks, specifically compressive strength, tensile strength, and shear strength expressed through cohesion (c) and the internal friction angle (ϕ) in the sandstones of the Balikpapan and Pulau Balang Formations. This research employed laboratory testing of physical and mechanical properties on intact rock samples obtained from sandstone outcrops, which were subsequently processed using statistical analysis methods, including linear regression, the coefficient of determination (R2), and the correlation coefficient (r). The results indicate that variations in moisture content and porosity have a highly significant influence and are inversely proportional to the mechanical strength values of the rock. Specifically, higher moisture content and porosity lead to a decrease in the mechanical strength parameters (compressive, tensile, and shear strength) of the sandstones in both formations. This is evidenced by the negative linear trends and correlation/R2 values ranging from 0.96 to 1.
Analisis Upper Bound dan Lower Bound pada Kuat Tekan Batupasir Formasi Balikpapan dan Pulau Balang dengan Metode Uniaxial Compressive Strength, Point Load Index dan Schmidt Hammer Aisyatur Ridho; Tommy Trides; Rety Winonazada; Albertus Juvensius Pontus; Revia Oktaviani
Venus: Jurnal Publikasi Rumpun Ilmu Teknik  Vol. 4 No. 3 (2026): Juni: Venus: Jurnal Publikasi Rumpun Ilmu Teknik
Publisher : Asosiasi Riset Ilmu Teknik Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61132/venus.v4i3.1425

Abstract

Sandstone is one of the sedimentary rock types widely utilized in mining activities; therefore, its mechanical characteristics, particularly uniaxial compressive strength, need to be determined. This study aims to analyze the compressive strength of sandstone from the Balikpapan and Pulau Balang Formations using the Uniaxial Compressive Strength (UCS), Point Load Index (PLI), and Schmidt Hammer methods. Sampling and Schmidt Hammer testing were conducted in the field, while physical property tests, UCS tests, and PLI tests were carried out in the laboratory. The results indicate that the compressive strength of sandstone from the Pulau Balang Formation is higher than that of the Balikpapan Formation, with values ranging from 18.30–44.11 MPa and 10.05–39.51 MPa, respectively. The relationship between PLI and UCS for the Balikpapan Formation is expressed by the regression equation UCS = 16.569(Is50) with R² = 0.78, whereas for the Pulau Balang Formation the equation is UCS = 8.2664(Is50) with R² = 0.76. The regression equations were further complemented with upper and lower bounds based on the margin of error. In addition, the Rebound Number (Rn) exhibited a positive linear correlation with UCS, with coefficients of determination (R²) of 0.89 for the Balikpapan Formation and 0.98 for the Pulau Balang Formation. These findings indicate that higher UCS values correspond to higher Rebound Number values.            
Studi Kontruksi dan Kegunaan Kabel Photovoltaik (PV) pada Sistem Pembangkit Listrik Tenaga Surya Berbasis On-Grid di Gedung BNI Tower PIK 2 Sudarmanto Sudarmanto; Sulistyo Widodo
Venus: Jurnal Publikasi Rumpun Ilmu Teknik  Vol. 4 No. 2 (2026): Venus: Jurnal Publikasi Rumpun Ilmu Teknik
Publisher : Asosiasi Riset Ilmu Teknik Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61132/venus.v4i2.1457

Abstract

Solar Photovoltaic (PV) Power Plants have become one of the most promising renewable energy technologies to support sustainable energy development. In PV systems, photovoltaic (PV) cables function as the primary conductors for transmitting direct current (DC) electrical energy from solar modules to the inverter; therefore, their selection and installation must comply with applicable technical standards. This study aims to analyze the construction, characteristics, and applications of PV cables in the On-Grid Solar Power Plant installed at BNI Tower PIK 2. The research employed a field case study using descriptive and quantitative approaches through direct observation, voltage, current, and cable temperature measurements, as well as DC voltage drop analysis. The results indicate that the HI Z2Z2-K PV cable used in the system complies with IEC 62930:2017 standards and is constructed with tinned copper conductors and XLPO insulation, providing excellent resistance to high temperatures, ultraviolet radiation, humidity, and outdoor environmental conditions. The voltage drop calculations show that all measured strings exhibit voltage losses below the recommended maximum limit of 3%, resulting in no significant impact on system performance. Furthermore, thermal measurements reveal that the cable operating temperature remains within safe limits without indications of overheating. The study concludes that the use of standard-compliant PV cables and proper installation methods significantly contributes to the efficiency, safety, and long-term reliability of On-Grid photovoltaic power generation systems.
Identifikasi Potensi Bahaya pada Keamanan, Keselamatan, Kesehatan Kerja, dan Lingkungan (K3l) di Gardu Induk Balaraja Lama Menggunakan Metode Hirarc (Hazard Identification, Risk Assessment, Risk Control) Muhamad Putra Dermawan; Belinda Ayuningtyas
Venus: Jurnal Publikasi Rumpun Ilmu Teknik  Vol. 4 No. 3 (2026): Juni: Venus: Jurnal Publikasi Rumpun Ilmu Teknik
Publisher : Asosiasi Riset Ilmu Teknik Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61132/venus.v4i3.1474

Abstract

Substations are critical components of electrical power systems but pose significant occupational safety risks due to medium-voltage equipment operation. This study aims to identify potential hazards and analyze Occupational Safety, Health, and Environment (K3L) risks at the Balaraja Lama Substation based on electrical testing of the Algojo Feeder using the Hazard Identification, Risk Assessment, and Risk Control (HIRARC) method. Hazard identification was conducted through field observations, visual equipment inspections, and electrical tests, including circuit breaker (PMT) contact resistance and AC/DC power supply polarity measurements. The PMT contact resistance values were 92.5 µΩ (R), 60.2 µΩ (S), and 98.6 µΩ (T), meeting IEC 62271 and IEC 60694 standards. The power supply voltages were 229 V (AC) and 104.9 V (DC), with no significant grounding anomalies, while visual inspection revealed no major equipment damage. The Algojo Feeder was therefore considered operationally reliable. However, HIRARC analysis identified latent hazards associated with equipment aging and workplace conditions. Risk control measures, including routine maintenance, safe work procedures, and consistent use of personal protective equipment (PPE), are recommended to maintain operational safety and reliability.
Peningkatan Fasilitas Pejalan Kaki di Surabaya untuk Mendukung Transportasi Berkelanjutan Pangeran Rohmat Nugroho; Riswanda Edgar Prayoga; M. Ramadatul Syahren
Venus: Jurnal Publikasi Rumpun Ilmu Teknik  Vol. 4 No. 4 (2026): Venus: Jurnal Publikasi Rumpun Ilmu Teknik
Publisher : Asosiasi Riset Ilmu Teknik Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61132/venus.v4i4.1491

Abstract

This study aims to analyze the improvement of pedestrian facilities in Surabaya City in support of a sustainable transportation system. The review focuses on three main issues: the inclusiveness of pedestrian facilities, physical and non-physical barriers on sidewalks, and the integration of pedestrian pathways with public transportation. This study employs a Systematic Literature Review (SLR) method by examining journal articles, conference proceedings, policy documents, and technical guidelines relevant to walkability, pedestrian facilities, universal design, and Transit-Oriented Development (TOD). The findings indicate that Surabaya has developed several pedestrian corridors with positive progress, particularly in the city center and heritage areas. However, the quality of pedestrian facilities remains uneven across different locations. The dominant problems include discontinuous guiding blocks, ramps that do not fully comply with standards, limited shade, illegal parking, sidewalk misuse by informal activities, and inadequate accessibility to public transport stops for persons with disabilities. Therefore, the improvement of pedestrian facilities should be directed toward the equalization of technical standards, stronger supervision of public spaces, and the integration of first-mile and last-mile connectivity with public transportation. Accordingly, pedestrian pathways should not only function as walking spaces but also serve as an essential instrument for creating an inclusive, healthy, low-emission, and human-oriented city
Evaluasi Powder Factor terhadap Jarak Lemparan Flyrock dengan Teori Ebrahim Ghasemi pada Hasil Peledakan di PT Bukit Baiduri Energi Provinsi Kalimantan Timur Perdi Perdi; Lucia Litha Respati; Albertus Juvensius Pontus; Revia Oktaviani; Tommy Trides
Venus: Jurnal Publikasi Rumpun Ilmu Teknik  Vol. 4 No. 4 (2026): Venus: Jurnal Publikasi Rumpun Ilmu Teknik
Publisher : Asosiasi Riset Ilmu Teknik Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61132/venus.v4i4.1493

Abstract

Blasting activities in coal mining are carried out to fragment overburden material and improve excavation efficiency. However, blasting operations may generate environmental impacts, one of which is flyrock, which can endanger equipment, facilities, and personnel. This study aims to evaluate the influence of blasting geometry and powder factor on flyrock distance and to compare actual flyrock distances with predictions using the Ebrahim Ghasemi method at PT Bukit Baiduri Energi, East Kalimantan. The research was conducted through direct field measurements of blasting geometry parameters, including burden, spacing, stemming, free-face burden, and hole depth from 30 blasting events. The results showed that the actual flyrock distance had an average value of 25.37 m with a maximum distance of 47.01 m, while the Ebrahim Ghasemi prediction method produced an average distance of 24.70 m with a maximum distance of 40.80 m. Correlation analysis indicated that powder factor was the most influential parameter affecting flyrock distance, with a correlation coefficient (r) of 0.93 and a coefficient of determination (R²) of 0.8664, indicating a very strong relationship. An increase in powder factor tends to increase the flyrock distance. Therefore, proper control of blasting geometry and powder factor is essential to minimize flyrock risk and improve blasting safety.

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