Jurnal Online Teknologi Industri (UMI FTI - Fakultas Teknologi Industri, Universitas Muslim Indonesia Makassar)
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QUEUING MODEL DESIGN TO OPTIMIZE FOR PRE FLIGHT SERVICES DURING THE COVID-19 PANDEMIC. (Case Study At Sultan Hasanuddin International Airport Makassar)
Get PDFThis study aims to determine (1) the optimal timing for flight service users before making a flight (pre flight) at Sultan Hasanuddin International Airport Makassar. (2) The optimal standard time during the Pre Flight process during the Covid-19 pandemic at Makassar Sultan Hasanuddin International Airport, and (3) Efforts made by airport managers in minimizing pre flight processing time.This study uses the Flow Process Chart method which is a schematic/diagram depiction that shows all the steps in a program and shows how the steps interact with each other.Based on the results of the analysis, it is concluded that: the optimal time for Pre Flight Services activities at Sultan Hasanuddin International Airport Makassar is not in accordance with the standards that refer to the Decree of the Director General of Civil Aviation where the standard time is still high; the optimal time required for the Pre Flight Services process is 20 minutes 40 seconds for normal time and the standard time is 23 minutes 37 seconds; As for the efforts made to minimize pre-flight processing time, including improving the quality of human resources on duty, increasing airport capacity, correcting infrastructure, regular maintenance of the equipment used and maximizing service at the check-in counter, especially during peak load
Analisis Performa Persentase Stripping dan Efisiensi Panas Stripper (DA-101) pada Unit Sintesa Urea PUSRI-II B
Get PDFThe Synthesis Section in the PUSRI II-B Urea Plant is the main section in the process of making urea fertilizer which will determine the components and quality of urea. The Synthesis Section has three main tools, namely reactor (DC-101), stripper (DA-101), and carbamate condenser (EA-101). The stripper (DA-101) plays a role in the process of separating excess ammonia from urea and decomposing unconverted carbamates from the urea synthesis solution. The separation process in the stripper is called stripping. Carbamate decomposition in the stripper can cause side reactions with the result of excess biuret due to unsuitable operating conditions. This caused in the need to control the operating conditions of the stripper so that the formation of biuret can be minimized. In this study, a stripper performance analysis (DA-101) was carried out from the comparison of design data and actual data in terms of the percentage of NH3 stripping, heat efficiency, and biuret content. The actual data in this study were taken in 5 weeks for 1 month at the end of 2021. From the results of the study, the percentage of NH3 stripping was 76.7329%, 77.1498%, 76.9525%, 76.2190% and 76.10231%. Meanwhile, the heat efficiency is 97.9500%, 93.69%, 95.1200%, 97.1500% and 97.3400%. And the levels of biuret formed are 0.0349 %wt, 0.0671 %wt, 0.0474 %wt, 0.0664 %wt, and 0.0469 %wt. The results of the stripper performance analysis (DA-101) show that the equipment unit is still functioning properly
Pirolisis Katalitik Minyak Pelumas Bekas Menjadi Bahan Bakar Cair Menggunakan Zeolit Alam
Get PDFMinyak pelumas bekas merupakan limbah yang dihasilkan kendaraan bermotor yang jumlah buangannya sangat besar terutama dikota besar. Apabila terpapar akan membahayakan dan menyebabkan masalah dalam lingkungan.. Berbagai metode pengolahan minyak pelumas bekas diantaranya acid-clay, Distilasi Thin Film Evaporation–Hydrofinishin dan Pirolisi. Penelitian ini bertujuan untuk mengetahui konversi minyak pelumas bekas menjadi minyak serta mengetahui karekteristik produk cair yang dihasilkan. Penelitian ini menggunakan proses pirolisis dengan memanaskan minyak pelumas sampai temperatur 2500C dengan banyak umpan 125ml dengan variasi ratio antara umpan dan zeolit alam 1:0 , 1:0.25, 1:0,5, 1:0.75 yang berupa batuan kecil yang telah dihaluskan sebesar 40 mesh.. Sebelum digunakan. Zeolit alam terlebih dahulu di aktivasi menggunakan NaOH 10%(w/w). Cairan minyak yang dihasilkan kemudian di analisa berupa Initial Boilling Point (IBP), densitas, viskositas, flash point dan four point, specific gravity . Hasil penelitian didapat produk cair yang dihasilkan sebanyak 43,7 ml,65 ml, 77 ml dan 108,3ml. Penggunaan ration katalis 1:0.75 memberikan hasil yang maksimal yaitu sebanyak 108,3 ml produk cair atau 87%. Dengan karakteristsik minyak yang didapat Initial Boilling Point 185oC, berat jenis .835 kg/m3, viskositas 02.58 m 30 C ; 02.58 m 40 C, flash point 550C dan pour point. 0 oC specific gravity 0.835. Dapat disimpulkan Pirolisis katalitik minyak pelumas bekas dengan zeolit alam menghasilkan produk cair yang bernilai sebagai bahan bakar. Dari analisa karakteristik minyak yang dihasilkan mendekati minyak solar
Karakteristik Mineraloid Opal Limbong, Kabupaten Luwu Utara, Provinsi Sulawesi Selatan
No full textOpal is classified as gems that are scattered in several places in the world and specifically in Indonesia is located in Banten, West Java Province and in Limbong, South Sulawesi Province. Opal in Limbong, North Luwu Regency, South Sulawesi Province has never been conducted research, so researchers are interested in conducting research. This research aims to determine the classification of opal mineraloids, host rock, and know the opal mineraloid paragenesis in the Limbong area, Luwu Regency North, South Sulawesi Province. The research method is carried out sampling in the field—laboratory analysis using Petrographic analysis and XRD analysis. The results of the study in the laboratory are then processed to answer the research objectives. The results obtained by opal mineraloid carrier rocks are andesite rocks with a mineral composition consisting of plagioclase, k-feldspar, biotite, muscovite, and quartz. The microscopically visible textures are euhedral, myrmekite, radiated, colloform, and banded. Based on XRD data, the main peak is at 2 Ø: 21.62 with a price of d: 4.0626; the second peak at 2 Ø: 25.16 with a value of d: 3.5147. Another peak with low intensity and bias at 2 Ø: 65.08, with a value of d: 1.4247, is classified as opal-C
ANALYSIS OF THE EFFECTIVENESS OF CLEAN WATER DISTRIBUTION MACHINE USING OVERALL EQUIPMENT EFFECTIVENESS (OEE) METHOD
Get PDFClean water distribution machines are very important for local drinking water companies to be able to supply clean water to customers. The need for water continues to increase, so an analysis is needed to determine the decline in engine pump performance in the production process. Maintenance activities need to be carried out to maintain the reliability (realiability) of the machine so that it can operate properly. Therefore, a good strategy is needed to maintain the continuity of the production process. The purpose of this research is to measure the performance of the water distribution pump machine / equipment associated with the low level of clean water production, to identify the losses experienced by the company. The Overall Equipment Effectiveness (OEE) value obtained before repairs were carried out in November 2019 for Lapi I was 69.38% and Lapi II was 69. 75% while in December 2019 for Lapi I it was 74.02% and Lapi II was 73.65% still below the JIPM standard, namely ≥85%. From the results of the six big losses, the clean water distribution pump machine as a whole still needs evaluation to make improvements in increasing effectiveness and productivity, especially in the problem of redeuced speed losses so that suggestions can be made to improve the clean water distribution machine. After repairs in January 2020 for Lapi I was 87.90% and Lapi II was 87.26% while in February 2020 for Lapi I it was 90.34% and Lapi II was 85.81%. From the results of the six big losses, the clean water distribution pump machine as a whole still needs evaluation to make improvements in increasing effectiveness and productivity, especially in the problem of redeuced speed losses so that suggestions can be made to improve the clean water distribution machine. After repairs in January 2020 for Lapi I was 87.90% and Lapi II was 87.26% while in February 2020 for Lapi I it was 90.34% and Lapi II was 85.81%. From the results of the six big losses, the clean water distribution pump machine as a whole still needs evaluation to make improvements in increasing effectiveness and productivity, especially in the problem of redeuced speed losses so that suggestions can be made to improve the clean water distribution machine. After repairs in January 2020 for Lapi I was 87.90% and Lapi II was 87.26% while in February 2020 for Lapi I it was 90.34% and Lapi II was 85.81
Analisis Pengaruh Waktu Pengadukan Terhadap Penetralan Asam Menggunakan Batugamping Dengan MetodE ABCC
No full textAir asam tambang adalah air yang terbentuk akibat dari kegiatan penambangan dengan pH rendah (pH 6) sebagai dampak dibukanya suatu potensi keasaman batuan, sehingga menimbulkan permasalahan terhadap kualitas air dan tanah, dimana pembentukannya dipengaruhi oleh tiga faktor utama yaitu air, oksigen, dan batuan yang mengandung mineral-mineral sulfida. Metode acid buffering characteristc curve (ABCC) melibatkan titrasi lambat sampel dengan asam sambil terus memantau pH. Material yang digunakan dalam proses pengolahan air asam tambang adalah bahan yang memiliki alkalinitas seperti batugamping. Penelitian ini bertujuan untuk mengetahui pengaruh waktu pengadukan pada proses penetralan asam. Berdasarkan hasil pengujian dengan menggunakan variabel waktu pengadukan 1, 3 dan 5 menit didapatkan pH awal untuk waktu 1 menit (pH awal 8,45, pH akhir 6,01), waktu pengadukan 3 menit (pH awal 8,51, pH ahir 6,23) dan waktu pengadukan 5 menit (pH awal 8,68, pH ahir 6,71). Dari hasil pengujian kualitas tersebut dapat diketahui bahwa variabel waktu dapat mempengaruhi proses penetralan asam. Semakin lama waktu pengadukan maka waktu (kecepatan) reaksi antara batugamping dengan air asam tambang akan semakin lama sehingga kualitas air yang dihasilkan akan semakin baik pula (pH semakin tinggi)
WINGKO INDUSTRY SUSTAINABILITY IMPROVEMENT STRATEGY USING THE BUSINESS MODEL CANVAS (BMC) METHOD
Get PDFWingko is one of Indonesian Snack from Babat of Lamongan Regency which is produced by UMKM Klapa Muda. Compete makes the production unstable, even decreased. Right now UMKM Klapa Muda must develop rapidly, because there are already many competitors selling similar products. In this study using the Business Model Canvas Development that is assisted using the Internal factor Evaluation matrix, External Factor Evaluation, Internal-External, SWOT matrix analysis, and QSPM (Quantitative Strategic Planning Matriks) analysis. For the weighting stage, 5th priority strategies used for market penetration and product development by applying Business Model Canvas (BMC) concept to UMKM Klapa Muda Babat strategy, it is 1) Customer Relationship Increasing promote activities with a value of 2,401, 2) Customer Segments establish customer loyalty with a value of 2,386, 3) Value Proposition guarantees production quality and mproves products with a value of 2.24, 4) Channels has a relationship with the government with a value of 2,015, 5) Key Resources Development of machine and equipment technology with a value of 1,308
PROPOSED KITCHEN DESIGN FOR COMPLYING ELDERLY NEEDS
Get PDF29 Million elderly had accidents during 2014, and caused 29 thousand of death in 2016. Once of the biggest potential risk for elderly is a kitchen. It caused nursing home, needs to be more consent in designing kitchen for elderly. The purpose of this research was to design comfort kitchen for elderly by using design thinking approach. Design thinking utilized voice of customer to made a decision. It has an excessed as prototype redundant test to gain the voice of customers. Based on the customer needs, this research designed a kitchen with some racks near the dishwasher, applied some handrails in several places, sitting place to wash the dish and to cook, applied a food storage. Kitchen designed without any stairs and create a storage to placing the walker. This proposed design was tested by Wilcoxon signed-rank test to prove the differences the new design with the precedence desig
THE RIGHT CRITERIA IN SELECTING THE SUPPLIER OF LOTTO FABRIC RAW MATERIAL IN CONVECTION INDUSTRY BY USING AHP AND TOPSIS METHODS
Get PDFFamily Sport Clothing convection is Mr. Raharjo’s family business in textile industry which produces training pants, made of lotto fabric. The company only has one criterion in supplier selection process, and in this convection is the cost. In this convection, problems that usually occur in selecting the supplier of raw materials are the production process is delayed since the raw materials are not enough; the quality of the raw materials does not meet the company standards; and supplier that does not deliver on time. This study was conducted with the aim of identifying the criteria used in selecting supplier and determining the ranking or the best supplier priority. The researcher implemented AHP (Analytical Hierarchy Process) method by distributing questionnaires to the owners of convection, and TOPSIS (Technique for Order Preference by Similarity to Ideal Solution) by measuring the shortest distance between positive ideal solutions and the longest distance with negative ideal solutions. The criteria were adopted from previous researches, and processed by using Pareto diagrams. Based on the results of calculations using Pareto diagram, the criteria used in this study are quality, cost, service, delivery, feasibility, and capacity. Based on the results of calculation using AHP method, the order of the most prioritized criteria is: quality (0.37), cost (0.29), capacity (0.13), feasibility (0.12), delivery process, (0.07,) and service (0.03). In addition, the priority order of the suppliers based on TOPSIS is: Libeng Kiantana (0.45), Yudi Hartono (0.23), Abdul Ghofur (0.23), Panorama Shop (0.06) and Indigenous Face Shop (0.02)
Karakteristik Mineralisasi Endapan Epitermal Pada Prospek Arinem Di Kabupaten Garut, Jawa Barat
No full textDaerah Arinem berada dalam wilayah Kabupaten Garut. Termasuk dalam endapan epitermal karena berada pada daerah busur kepulauan Sunda (Sunda Arc) yang terletak di kepulauan Indonesia di sisi selatan dari Sundaland dan lempeng Eurasia. Dalam kegiatan eksplorasi endapan mineral bijih, penting adanya pemahaman tentang mineral. Penelitian ini bertujuan untuk mengidentifikasi karakteristik mineralisasi endapan epitermal prospek Arinem berupa tekstur, morfologi, ukuran dan kehadiran mineral bijih yang nantinya dapat membantu untuk interpretasi paragenesanya. Studi dilakukan dengan mengamati 16 sampel hand speciment yang ditemukan dipermukaan serta 12 sampel yang berasal dari 1 lubang bor level 170-210 meter. Sampel-sampel tersebut diamati menggunakan mikroskop polarisasi refraksi-refleksi. Sementara 4 sampel terpilih digerus menjadi fraksi berukuran lempung dan dianalisis dengan menggunakan metode X-ray Diffraction (XRD) untuk mendeteksi mineral-mineral lempung dan asosiasi mineral ubahan lainnya. Tekstur kuarsa yang hadir pada lokasi penelitian berdasarkan pengamatan megaskopis, umumnya didominasi oleh tekstur saccharoidal, colloform, comb, zoned crystal, lattice bladed, banded, dan massif. Mineral bijih yang teridentifikasi umumnya didominasi oleh mineral base metal dengan paragenesa secara berurutan adalah pirit, sfalerit, kalkopirit, galena, limonit, jarosit dan malasit. Alterasi pada pada lokasi penelitian dicirikan oleh keberadaan kuarsa-kaolinit-illit, serta kuarsa-kaolinit-klorit-kalsit yang mencirikan zona propilitik. Hasil penelitian disimpulkan bahwa tipe mineralisasi pada prospek Arinem merupakan tipe epitermal sulfidasi rendah