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Jurnal Sains dan Teknologi: Jurnal Keilmuan dan Aplikasi Teknologi Industri
Published by Sekolah Tinggi Teknologi Industri Padang
ISSN : 14125455     EISSN : 26152827     DOI : http://dx.doi.org/10.36275/stsp.vxxix.xxx
Core Subject : Science, Engineering,
Computer Science & IT Engineering Industrial & Manufacturing Engineering
Jurnal Sains dan Teknologi STTIND Padang ini diterbitkan 2 (dua) kali dalam setahun pada bulan Juni dan Desember. Redaksi menerima tulisan ilmiah tentang hasil penelitian, survei, dan telaah pustaka yang erat hubungannya dengan sains dan teknologi industri. Ruang lingkup artiket : Teknik Industri, Teknik Pertambangan Teknik Lingkungan Sistem Informasi. Sains dan Teknologi Pendidikan serta Kejuruan.
Arjuna Subject : Teknik (semua kategori) - Tenik Industri dan Manufaktur
Articles 233 Documents
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PERANCANGAN SISTEM INFORMASI KENAIKAN PANGKAT DAN GOLONGAN GURU SMKN 1 SAWAHLUNTO BERBASIS WEB Eko Amri Jaya; Indah Febriyani; Rahmat Putra
Jurnal Sains dan Teknologi: Jurnal Keilmuan dan Aplikasi Teknologi Industri Vol 22, No 2 (2022): JURNAL SAINS DAN TEKNOLOGI
Publisher : Sekolah Tinggi Teknologi Industri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36275/stsp.v22i2.546

Abstract

SMKN 1 Sawahlunto is one of the vocational high schools located in Talawi District, Sawahlunto City. The promotion system and classes that run in this school is still done manually using Microsoft excel. This causing the process of processing data to rise through the ranks is time-consuming and costly in collecting files for material requirements to be promoted. Therefore, this research was carried out with the aim of developing an application that can manage data and files for promotion and teacher classes of SMKN 1 Sawahlunto web-based. System development is carried out using use case diagrams, activity diagrams and class diagrams. The method used in this study is the waterfall method to analyze the system to be developed in order to provide convenience to each teacher in applying for promotion and class. From the results of the trials that have been carried out, it shows that the system that has been made can run effectively, efficiently and make it easier for teachers of SMKN 1 Sawahlunto to apply for promotion and class.
RANCANGAN GEOMETRI PELEDAKAN BATUAN GRANODIORIT PT. GILGAL BATU ALAM LESTARI MEMPAWAH KALIMANTAN BARAT Murad Murad
Jurnal Sains dan Teknologi: Jurnal Keilmuan dan Aplikasi Teknologi Industri Vol 22, No 2 (2022): JURNAL SAINS DAN TEKNOLOGI
Publisher : Sekolah Tinggi Teknologi Industri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36275/stsp.v22i2.547

Abstract

PT. Gilgal Batu Alam Lestari (PT. GILBAL) is a granodiorite mining company whose activities include stripping overburden, excavation/mining using the blasting method, transporting blasted materials and processing granodiorite in processing units. The blasting design parameters are influenced by the proper selection of the hole diameter and pitch height. The effect of burden, spacing, stemming, subdrilling, the depth of the shot holes is very important to anticipate the geological conditions and the type of explosives used. The purpose of this research is to study and calculate the size of rock fragmentation resulting from blasting and analyze the size distribution of fragmentation in blasting activities using the Kuz-Ram method and Split Desktop 4.0 software. The method of solving the problem in this research is to design a good blasting geometry to get the granodiotite fragmentation size < 50 cm. The proposed geometric design uses RL. Ash, CJ. Konya and ICI-Explosive. The results of the design RL. Ash obtained burden (B) 1.95 m, spacing (S) 2.34 m, steaming (T) 1.36 m, subdrilling (J) 0.585 m, blast hole depth (H) 5.85 m, ladder height ( L) 6 m, Powder column (PC) 4.49 m, hole diameter (De) 3 inches. CJ. Konya obtained B 2 m, S 2.375 m, T 1.4 m, J 0.6 m, H 5.69 m, L 6 m, PC 4.29 m, De 3 inches. According to the ICI-Explosive theory, B 1.9 m, S 1.9 m, T 1.52 m, J 0.608 m, H 6.08 m, L 6 m, PC 3.952 m, De 3 inches. The proposed design using ICI-Explosive and Kuz-ram found that the fragmentation size of 50 cm passed the 89.10% sieve and the cost of blasting was Rp. 115,237,500,-more likely to be implemented because it requires minimal blasting costs and fragmentation in accordance with the bucket capacity and company design compared to the RL. Ash method. and CJ. Konya. The distribution of fragmentation using Split Desktop obtained a fragmentation size of 50 cm which passed the sieve of 97.11%. It is necessary to conduct a more in-depth study related to the ideal blasting geometry from a technical and economic point of view as well as strict supervision of the blasting geometry design that has been designed to be implemented in the field.
ANALISA PEMILIHAN METODE PETERSON DAN PEEK TERHADAP RUGI-RUGI DAYA AKIBAT KORONA PADA SUTET 275 KV PAYAKUMBUH - KILIRANJAO Andrian Putra; Erhaneli Erhaneli
Jurnal Sains dan Teknologi: Jurnal Keilmuan dan Aplikasi Teknologi Industri Vol 22, No 2 (2022): JURNAL SAINS DAN TEKNOLOGI
Publisher : Sekolah Tinggi Teknologi Industri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36275/stsp.v22i2.504

Abstract

The transmission line is a channel that connects the generating unit with the distribution unit in distributing electrical energy to consumers or loads with high voltage intermediaries of the type of overhead line. Transmission lines have criteria, namely short, medium and long channels. The longer the transmission line, the more cases that occur. One of them is found especially in air ducts in the form of corona events caused by weather conditions, cross-sectional area used, distance between beam conductors, surface conditions of conductors or insulators and system voltage. The purpose of this study was to see the effect of weather, cross-sectional area used, distance between beam conductors, surface conditions of conductors or insulators and system voltage on power losses and decreased efficiency caused by corona at SUTET 275 kV Payakumbuh - Kiliranjao with a line length of 126 ,4 km. Corona is characterized by the presence of a very visible purple (Violet) light that can be seen at night and causes power losses. Power losses caused by the corona in the Extra High Voltage Air Line (SUTET) must be taken into account, because at voltages above 100 kV the corona symptoms have started to get serious. Calculations were carried out using the Peterson equation based on technical data and power profile of the 275 kV Payakumbuh to Kiliranjao SUTET and temperature data. From the calculation it can be concluded that the power losses obtained from the Peterson equation with the same efficiency value (94.8 kW and 99 %). This is influenced by the temperature, which from August 2021 to July 2022 the temperature value is almost the same and results in the same destructive critical stress value.
ANALISIS MODE SISTEM PEMBANGKIT HYBRID BERKELANJUTAN PLTMH-PLN DENGAN SOLAR CELL MENGGUNAKAN HELIOSCOPE DAN HOMER Sepannur Bandri; Rafika Andari; Liliana Liliana; Rendisky Rendisky
Jurnal Sains dan Teknologi: Jurnal Keilmuan dan Aplikasi Teknologi Industri Vol 22, No 2 (2022): JURNAL SAINS DAN TEKNOLOGI
Publisher : Sekolah Tinggi Teknologi Industri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36275/stsp.v22i2.523

Abstract

This study aims to examine the total cost savings of PLN's electricity bill, which is quite high during the dry season, by using solar panels on a building's roof. The study took place at the PTPN VI Kayu Aro Tea Factory in Kerinci Regency, Jambi Province. Because using renewable energy sources is more complicated than using Microhydro resources, a Hybrid Optimization Model of Electric Renewable (HOMER) application program is required. This application program is used to determine the lowest Initial Cost, Cost Of Energy (COE), and Break Event Point (BEP) over a 25-year period. The Helioscope allows us to identify the required components, which are 164 330 wp solar panels, 2 Surette Rolls 4-Ks25p batteries, and 1 40000TL3-S hybrid inverter. According to the Hybrid Optimization Model of Electric Renewable (HOMER) analysis, the initial cost is IDR 1,049,620,000, the Cost of Energy (COE) is IDR 752/Kwh, and the Break Event Point (BEP) is for 24 years. The simulation results from optimizing the design of the Hybrid microhydro system, PLN with a continuous photovoltaic array show that the contribution of electrical energy produced by PLN is 11,856 kWh/year (16.3%) and solar cells is PV: 61,092 kWh/year (83.7%).
PERANCANGAN SISTEM CERDAS PERAWATAN TANAMAN BERBASIS ARDUINO Irwan Yusti; Veni Wedyawati; Asep Neris Bachtiar; Iskandar Iskandar
Jurnal Sains dan Teknologi: Jurnal Keilmuan dan Aplikasi Teknologi Industri Vol 22, No 2 (2022): JURNAL SAINS DAN TEKNOLOGI
Publisher : Sekolah Tinggi Teknologi Industri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36275/stsp.v22i2.532

Abstract

The use of appropriate technology can reduce production costs, the use of drip irrigation systems or irrigation systems using sprinklers can help farmers maintain soil moisture but requires human intervention to operate them. Therefore, this study aims to develop an irrigation system using sprinklers that can work automatically so that it can save time and human effort. This system is an intelligent system controlled by a microcontroller so that it can work continuously with little human assistance. With this system, the plant care process can be carried out more optimally, saving water, time, energy and costs. This research is an applied research by thinking about the required infrastructure (hardware, software and human resource tools), then making a drawing design with a recycling cycle technique consisting of needs analysis, design, implementation, testing and evaluation. Needs analysis is needed to see what is needed by the system so that it can work as desired, making schematic drawings, testing the design on a simulation program (Proteus). Then at the time of implementation, the components are installed according to the schematic drawings. Finally, at the testing stage, the system performance test is carried out by conducting an evaluation stage.
KAJIAN INTRUSI AIR LAUT BERDASARKAN ANALISA GEOLISTRIK DI DESA SENTANG, KABUPATEN SERDANG BEDAGAI, SUMATERA UTARA Annisa Intan Yustisia Rahmalina; Riam Marlina Amsya; Ahmad Fadhly; Ferdinan Pandiangan
Jurnal Sains dan Teknologi: Jurnal Keilmuan dan Aplikasi Teknologi Industri Vol 22, No 2 (2022): JURNAL SAINS DAN TEKNOLOGI
Publisher : Sekolah Tinggi Teknologi Industri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36275/stsp.v22i2.561

Abstract

This research was carried out in Sentang Village, Teluk Mengkudu District, Serdang Bedagai Regency, North Sumatra Province. The purpose of this activity is to determine the distribution of sea water intrusion at the research site. This information is very useful for knowing the extent to which the location area has been intruded by seawater. The method used is the 1D resistivity method with the Schlumberger configuration, with 3 measurement paths. The distance between the measurement paths is close together, where the total length of the stretch of each of the two measuring points is Track I of 350 meters, Track II is 200 meters and Track III is 350 meters. Based on the measurement data and data processing, it is suspected that the research location is in an alluvium formation, where the lithology is gravel, sand and clay. The results of the resistivity measurements obtained by the three tracks are seawater intrusion, namely: The first track is at a depth of 2.68 - 10.8 m with a resistivity value of 4.06 m, the second track is at a depth of 2.34 - 9.32 m with a resistivity value of 4.94 m The third track is at a depth of 2.56 - 9.8 m with a resistivity value of 4.5 m. Meanwhile, residents' well water testing activities were used as supporting data which was correlated with resistivity data. It was concluded that the research area had been intruded by seawater at a depth of 2.34 – 10.8 meters and at a depth of 80.1 - 125 meters it was suspected that it had not been contaminated with seawater. If you want to get fresh water wells that have not been contaminated, you can drill with a depth of 80.1 to 125 meters in a location that has been studied to get drinking water fit for consumption.
EVALUASI KONEKTOR YANG ERGONOMI DALAM PERANCANGAN DESAIN GUNA PEMBERIAN EVALUASI DESAIN PRODUK TEMPAT DUDUK Hessa Sinai Singadipoera; Kurniansyah Kurniansyah; Lutfy Eka Biardian
Jurnal Sains dan Teknologi: Jurnal Keilmuan dan Aplikasi Teknologi Industri Vol 22, No 2 (2022): JURNAL SAINS DAN TEKNOLOGI
Publisher : Sekolah Tinggi Teknologi Industri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36275/stsp.v22i2.496

Abstract

Background the conducted in order to produce a design that is in accordance with the design design, it takes stages of activities such as planning or development. This starts from the idea search stage, problem analysis and followed by the development stage, in the form of concepts, systems and details. In addition, it can also be made protected, production activities, evaluation or product trials, then end in the distribution section. Purpose in this research to provide appropriate design results and also pay attention in terms of human factors and their activities. Like the size, body shape, position position, behavior and also habits during activities. Research in result will the achievement of good and correct work productivity. In paying attention to this, ergonomic consideration is needed. Ergonomics is part of the requirements for achieving qualified, certified design and customer needs. In addition, how far the design has met the functional technical factors, the quality of aesthetic and also economical. So in this case an evaluation is needed that can use the benchmark. Ergonomics are needed to evaluate the product. In addition to the conclusions, in terms of functional, the design must also be able to provide the impression of safety, health and comfort for users (humans) when it is published or operated by the product from the product.
PENYISIHAN LOGAM CR (VI) DARI LIMBAH CAIR ELEKTROPLATING MENGGUNAKAN ADSORBEN BEADS KOMPOSIT CHITOSAN-CLAY Putri Fatihah Zuhrah; Shinta Elystia; Zultiniar Zultiniar; Dini Aulia Sari Ermal
Jurnal Sains dan Teknologi: Jurnal Keilmuan dan Aplikasi Teknologi Industri Vol 22, No 2 (2022): JURNAL SAINS DAN TEKNOLOGI
Publisher : Sekolah Tinggi Teknologi Industri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36275/stsp.v22i2.513

Abstract

Water pollution by heavy metals is a serious problem. One of the dangerous parameters that contaminate waters is heavy metals that come from metal industrial waste. Electroplating wastewater contains heavy metals that are harmful and toxic to the environment. Alternative treatment that can be used is the adsorption process with a column system using chitosan-clay beads. Chitosan has amine and hydroxyl groups which have ability to absorb heavy metals. The results of the characterization by FTIR (Fourier Transform Infrared) test on chitosan produced contained a chitosan functional group and obtained a DD value of 80.97%. This study aims to remove Cr (VI) in electroplating wastewater. The variations carried out were variations in the ratio of the composition of chitosan-clay beads (w/w) (1.5:1), (2:1), (2.5:1) and a flow rate 3 mL/minute; 3.5 mL/min; and 4.5 mL/min. The results of the water absorption test (DSA) obtained for each variation of chitosan-clay beads were 609.52%; 628.27%; 658.04%, and the results of the compressive strength test are 22.491; 10,653; 3,015 Kgf. The results obtained are the best Cr (VI) removal efficiency of 95.46% with concentration of Cr (VI) 1.1566 mg/L at the ratio of chitosan-clay beads composition (2,5:1) (w/w) and flow rate 3 mL/min.
PENGEMBANGAN DESAIN MESIN PEMIPIL JAGUNG TENAGA MATAHARI Firman Ardiansyah Ekoanindiyo; Antoni Yohanes; Endro Prihastono
Jurnal Sains dan Teknologi: Jurnal Keilmuan dan Aplikasi Teknologi Industri Vol 22, No 2 (2022): JURNAL SAINS DAN TEKNOLOGI
Publisher : Sekolah Tinggi Teknologi Industri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36275/stsp.v22i2.520

Abstract

Agricultural land in Juwiring Village in the Cepiring sub-district, Kendal Regency, depends on rainwater for irrigating its rice fields. Rice fields in Juwiring village are planted with corn. In one year, farmers in Juwiring village can harvest corn 3 times. By using a solar powered corn sheller machine, farmers can save Rp. 20,000 per sack because there is no need to pay any more for the corn sheller, besides that with this machine you can save fuel because the fuel uses abundant solar power and the solar corn sheller machine is an environmentally friendly machine because it doesn't emit air pollution. In the previous study (Ekoanindiyo, 2020), from the results of the previous design there were several inputs from users, namely the hole for inserting corn was not too high so that farmers had to squat to put corn in. The diameter of the hole is not big enough so if there is corn with a large diameter then the corn cannot enter the hole. For the corn shelling process, it is inserted one by one into the hole so that the shelling process will take a long time. For the disposal site on the previous sheller machine there were two drain holes, namely the disposal of corncobs and the disposal of corn. When the machine is running, the corn cob does not come out of the cob drain hole but comes out together with the corn. The cobs and corn should come out separately, the corncob coming out of the corncob hole while the corn will come out of the corn dispensing hole. In the hole in the sheller machine place the sack so that the corn and corncobs can enter the sack. Development of a corn sheller machine design to improve the previous machine design including farmers in shelling corn do not need to squat so as to reduce fatigue when shelling. The holes for the cobs and corns to come out can be separated. The diameter hole for inserting corn is rather wide so that all sizes of corn can enter and when inserting corn into the machine you don't need one but you can do it directly in large quantities so that the shelling process can be completed more quickly. The research approach is with interviews and observations using anthropometric data of users. Using measurements of the body dimensions of farmers in the Village Farmer Group in Cepiring District as many as 5 people with elbow height body dimensions. The conclusion related to the development of the corn sheller machine design is the development of the corn sheller machine design using anthropometric data on the body dimensions of farmers in the Village Farmer Group in Cepiring District as many as 5 people. The body dimensions used are elbow height body dimensions. In this measurement the data used is the average or 50th percentile data or the average population so that users of moderate to tall stature can reach or use the machine
PERANCANGAN ALAT BANTU YANG ERGONOMI DENGAN SOFTWARE AUTOCAD UNTUK MENUNJANG PROSES PRODUKSI KERUPUK KULIT Muhammad Farhan Ramadhan; Wahyudin Wahyudin; Billy Nugraha
Jurnal Sains dan Teknologi: Jurnal Keilmuan dan Aplikasi Teknologi Industri Vol 22, No 2 (2022): JURNAL SAINS DAN TEKNOLOGI
Publisher : Sekolah Tinggi Teknologi Industri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36275/stsp.v22i2.544

Abstract

MSMEs have contributed to increase state revenue. This can be seen from the marketing of MSMEs products to abroad. One of them is the typical Karawang Farida skin crackers MSMEs located in Perumnas Permata Telukjambe Blok MC No. 36, Sukaluyu, Telukjambe Timur District, Karawang Regency. The problem that occurs at the MSMEs is the lack of supporting facilities in the production process carried out. The objectives in this study will produce a design of tools that are in accordance with the current problems. Research methods with the approach to design aids through the help of AutoCAD software. So, the right type of conveyor is used is a conveyor belt because with this conveyor skin crackers whose oil has been able to immediately walk to the final shelter. Oil that is accommodated will be flowed through a pipe that will be flowed back to the frying pan so that no oil is wasted after frying crackers. As a conclusion in this writing, the design of the tools needed by the MSMEs owner. So it is hoped that the design of this aids can increase work productivity during the production process.

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