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Peningkatan Mutu Tanah Liat Sebagai Bahan Baku Pembuatan Batu Bata di Kelurahan Bukaka, Kabupaten Bone, Sulawesi Selatan Irzal Nur; Sufriadin -; Purwanto -; Asran Ilyas; Aryanti Virtanti Anas; Nirmana Fiqra Qaidahiyani; Halilintar Rangga Swara; Reski Fausi Amanda
JURNAL TEPAT : Teknologi Terapan untuk Pengabdian Masyarakat Vol 3 No 2 (2020): Penguatan Aplikasi Teknologi untuk Masyarakat pada Masa Pandemi
Publisher : Faculty of Engineering UNHAS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25042/jurnal_tepat.v3i2.149

Abstract

In Bukaka area, Bone Regency, South Sulawesi, Indonesia, a small scale industry of red-bricks with clay as the raw material is exist, which have been operated by the local people in generations for decades. From field observation, a problem was identified related to the quality of the bricks produced, which mostly not fulfilled the quality standards. The purpuse of this community service activiy is to conduct a series of laboratory tests to define and formulate recommendations in order to improve the quality of the raw material and the bricks. Methods of laboratory works performed in this activity include mineralogical analysis (XRD) and chemical analysis (XRF) for clay samples, as well as dimension test, baking test, colour, saline content, absorbtion, compressive strength and sound test for the bricks. The results showed that the clay material composed of feldspar, quartz, kaolinite, and calcite; with high content of iron (Fe2O3 up to 8.85%), thus it is recommended to conduct a decreasing grade of the iron content using magnetic separator method. Dimension of the bricks produced by the local workers were generally far above the quality standard; thus it is recommended to conduct an increasing size of the bricks, particulary in their thickness and width. For the bricks baking, it is recommended to perform an increasing temperature and duration of the baking in order to gain a better quality. Absorbtion of the bricks were also averagely low, 0.5-0.6 gr/dm2/minute, thus it needs to be treated carefully at the time of the raw material mixing. Uncompressed strength test of the bricks resulted average value of 24.47 kg/cm2, which indicated a Class-25 type of the bricks, and having a good quality of sound.
Inisiasi Penerapan Keselamatan dan Kesehatan Kerja Pada Kegiatan Pertambangan Material Konstruksi Di PT Harfia Graha Perkasa, Kabupaten Gowa, Sulawesi Selatan Aryanti Virtanti Anas; Muhammad Ramli; Purwanto -; Asran Ilyas; Rini Novrianti Sutardjo Tui; Rizki Amalia; Andi Arjan
JURNAL TEPAT : Teknologi Terapan untuk Pengabdian Masyarakat Vol 4 No 2 (2021): Community Empowerment through Health Awareness in the New Normal
Publisher : Faculty of Engineering UNHAS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25042/jurnal_tepat.v4i2.195

Abstract

The implementation of Occupational Safety and Health (OHS) construction materials mining has not been implemented properly, including at PT Harfia Graha Perkasa. The problem faced is the lack of understanding of the importance of OHS and the potential hazards in the mining work environment both in mining, transportation and processing activities. On the other hand, there is a regulation that every mining activity must have an OHS program and standard, so the main purpose of this community service activity is to provide knowledge and understanding of OHS to mining workers. The method used is an OHS promotion program in the form of information dissemination, identification of potential hazards, and risk control efforts. The level of understanding of workers is measured through pre-test and post-test questionnaires given to 12 respondents. Prior to the initiation of the OHS program, only a total of 30% of all OSH questions were known by the workers, but after the program was carried out it was seen that there was a significant increase in the understanding of mining workers to 90%. The information dissemination program showed very good results where 100% of the information on OHS and 90% of the information on risk control efforts was known by the mine workers. This shows that service activities programs can help initiate the implementation and implementation of OHS in partner companies.
Pengembangan Sumur Bor Air Tanah di Pondok Tahfidzul Qur’an Miftahul Jannah Putri Pamanjengan, Moncongloe - Maros Muhammad - Ramli; Purwanto -; Aryanti Virtanti Anas; Rini Novrianti Sutadrjo Tui; Nirmana Fiqra Qaidahiyani; Asta Arjunoarwan Hatta
JURNAL TEPAT : Teknologi Terapan untuk Pengabdian Masyarakat Vol 5 No 2 (2022): Mengembangkan Kehiodupan Masyarakat melalui Kesatuan dan Kekuatan
Publisher : Faculty of Engineering UNHAS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25042/jurnal_tepat.v5i2.297

Abstract

The partner of this community service activity is Islamic Boarding Schoo of Tahfidzul Qur'an of Miftahul Jannah Putri in Pamanjengan, Moncongloe, Maros Regency. This boarding school guides 10 students from underprivileged families. The partner's main problem is the difficulty in meeting water needs for daily needs because there is no clean water service available through the network of Regional Drinking Water Companies and limited groundwater production from existing bore wells. Therefore, the boarding school manager and students tries to get ground water by developing the addition of groundwater wells as seen from the results of the pre-test. This boarding school has an area of ​​800 m2 making it possible to develop a better groundwater borehole. However, there are concerns about its success because several well drillings that have been carried out in its vicinity have not succeeded in obtaining water of the quality and quantity as expected. Therefore, this groundwater well development activity is carried out in stages based on a groundwater science approach which includes the stages of surface mapping, geoelectrical measurement, groundwater drilling, well construction and pumping. Drilling was carried out to a depth of 60 meters. The drilled well was pumped at a flow rate of 0.40 liters/second (1,440 liters/hour) and reached steady state at a water table drop of 1.60 meters. Thus, this community service activity was declared successful in accordance with the output target with the availability of groundwater production wells of good quality and sufficient quantity to meet the needs of the boarding school. The post-test results show that the existence of the well gives confidence that water needs will be met with additional groundwater drilled wells from this activity.
Pump Installation for Groundwater Utilization at Islamic Boarding School of Miftahul Jannah Putri Pamanjengan, Moncongloe - Maros Muhammad - Ramli; Purwanto Purwanto; Aryanti Virtanti Anas; Rini Novrianti Sutardjo; Nirmana Fiqra Qaidahiyani; Asta Arjunoarwan Hatta; Irzal Nur; Sri Widodo; Sufriadin Sufriadin; Rizki Amalia
JURNAL TEPAT : Teknologi Terapan untuk Pengabdian Masyarakat Vol 6 No 1 (2023): Kesadaran Teknologi untuk Mengatasi Permasalahan Kemasyarakatan
Publisher : Faculty of Engineering UNHAS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25042/jurnal_tepat.v6i1.355

Abstract

This community service activity has been carried out at the Miftahul Jannah Putri Tahfidzul Qur'an Islamic Boarding School in Pamanjengan, Moncongloe, Maros Regency. This Islamic Boarding School for Qur’an Memorizer fosters 10 children from families with underprivileged economic conditions. The capacity of the pondok buildings can accommodate more number of students, but water supply is a big problem. Therefore, the management of the school has attempted to add groundwater production wells through financing from other parties. Drilling was carried out to a depth of 60 meters. The well pumping test with a discharge of 1,440 liters/hour showed a change in the groundwater level to become static at a decrease of 1.60 meters. Thus, the condition prior to this community service activity was that there were production wells but had not been equipped with submersible pump wells. Information from the pre-test indicated that the students still felt limited clean water. Therefore, through Hasanuddin University's P2C-IKU activities, pump installations are carried out to be able to utilize groundwater from the drilled wells. The results of the post-test at the end of this activity showed that 83.30% of respondents believed that there would be sufficient water supply to meet the needs of the cottage, and 57.14% of respondents understood how to operate and maintain submersible pumps.
Analisis Penurunan Capaian Target Produksi Bijih Nikel Menggunakan Metode Fault Tree Analysis di PT Ifishdeco Provinsi Sulawesi Tenggara Anas, Aryanti Virtanti; Parissing, Yoshita P; Nur, Irzal; Sufriadin, Sufriadin; Purwanto, Purwanto; Thamrin, Meinarni; Prasetyono, Agus
Jurnal Penelitian Enjiniring Vol 24 No 1 (2020)
Publisher : Center of Techonolgy (COT), Fakultas Teknik, Universitas Hasanuddin

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25042/jpe.052020.07

Abstract

Abstrak Proses produksi berarti menghasilkan suatu produk yang bernilai guna. Dalam suatu perusahaan pertambangan, produksi merupakan hal yang sangat penting, sehingga diperlukan perencanaan yang matang. Perusahaan menargetkan jumlah bahan galian yang akan diproduksi baik dalam jangka panjang, menengah maupun jangka pendek. Operasi produksi PT. Ifishdeco menggunakan bantuan alat gali muat excavator Komatsu PC 300 dimana terjadi penurunan produksi bijih nikel sebesar 19,94%. Target produksi sebesar 149.934 mt, namun capaian produksi hanya sebesar 116.603mt. Oleh karena itu, penelitian ini dilakukan untuk mengetahui faktor utama dan nilai probabilitas penyebab turunnya capaian produksi. Salah satu metode yang dapat digunakan untuk menganalisis faktor utama penyebab penurunan capaian produksi adalah menggunakan Fault Tree Analysis (FTA). Persamaan logika top down dari Fault Tree Analysis disubstitusi ke dalam aljabar Boolean hingga diperoleh minimal cut set. Minimal cut set merupakan persamaan akhir yang merincikan top down. Top event penurunan capai target produksi memiliki empat top down, yaitu faktor pengisian, kesiapan fisik alat, efektivitas kerja, dan waktu edar alat gali muat. Berdasarkan nilai probabilitas basic event tertinggi yang bernilai 1, maka faktor utama penyebab penurunan capaian produksi adalah dari faktor umur pakai alat tua, penjadwalan perawatan tidak teratur, kualitas alat buruk, dan proses selective mining. Abstract Analysis of Decrease in Nickel Ore Production Targets Using the Fault Tree Analysis Method in PT Ifishdeco, Southeast Sulawesi Province. Production process meant produce product with beneficial value. At the mining company, production was very important, so it needed to be well-planned. Company was making target amount of digging material to be produced in long term, middle term, and short term. Production operation at PT Ifishdeco utilized digger loader equipment namely excavator Komatsu PC 300. There was decreasing in nickel ore production of 19,94%. Production target was 149,934 mt, but the company was only able to meet 116,603 mt. Objective of this study was to know main factor and probability value which caused the low production performance. One of methods to be used to analyze the main factor was Fault Tree Analysis (FTA). Top down logical equations of Fault Tree Analysis was substituted into Boolean algebra to get minimal cut set. Minimal cut set was a formula of the top down and used to calculate probability. Top event of the decreasing of the production target had four top downs which were filling factor, mechanical availability, effectivity of use, and cycle time of digger loader. Based on the highest probability of basic event which value was equal to 1, the main factor caused the decreasing of productivity were lifetime of equipment, unscheduled of maintenance, low quality of equipment, and selective mining. Kata Kunci: Excavator, Work Effectivity, Boolean, Cut Set, Probability
Estimasi Biaya Disposal PET 97 DP Menggunakan Metode High and Low Di Pt Vale Indonesia Tbk, Kabupaten Luwu Timur, Sulawesi Selatan Ikram, Muhammad Abdi Dzil; Anas, Aryanti Virtanti; Amalia, Rizki
Jurnal Penelitian Enjiniring Vol 25 No 1 (2021)
Publisher : Center of Techonolgy (COT), Fakultas Teknik, Universitas Hasanuddin

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25042/jpe.052021.08

Abstract

Abstrak Disposal area merupakan sebuah lokasi pada sebuah tambang terbuka yang digunakan untuk menyimpan sementara waste rock atau overburden yang dihasilkan selama proses pengupasan. Di PT Vale Indonesia terdapat tiga tipe disposal yang digunakan, yaitu induce flow, semi-induced flow, dan finger flow. Penelitian dilakukan pada disposal PET 97 DP dengan jenis disposal semi-induce flow. Disposal ini dikerjakan menggunakan dua unit dozer CAT D8R sebagai alat utama, dan civil material serta material pembatuan untuk meningkatkan stabilitas disposal. Disposal PET 97 DP termasuk jenis disposal semi-induced flow dengan empat dumping point dan memiliki tonase sebesar 919.484,363 ton dengan total kebutuhan civil material sebesar 321.819,527 ton. Estimasi biaya civil material dilakukan menggunakan metode high-low dan menghasilkan total estimasi biaya mencapai $1.186.777,53. Disposal PET 97 DP diperkirakan dapat digunakan hingga 12 minggu dengan target produksi 75.000 ton/minggu dengan menggunakan dua unit dozer. Total biaya yang dibutuhkan dalam pengoperasian disposal PET 97 DP diperkirakan mencapai $1.450.513,50. Abstract Disposal area is a location in an open pit mine that were used to temporarily keep waste rock or overburden that were produced during the stripping process. In PT Vale Indonesia, Tbk there were three types of disposal that were used, those are induce flow, semi-induced flow, and finger flow. This research was done at PET 97 DP disposal with the type of the disposal being semi-induced flow. This disposal was done using two units of CAT D8R dozers as the main equipment and civil material as the petrification materials to increase the stability of the disposal. PET 97 DP disposal is a semi-induced flow disposal with four dumping points and capacity of 919.484,363 ton with the needs of 321.819,527 ton of civil materials. Civil material cost was estimated using high-low method with the total cost was $1.186.777,53. PET 97 DP disposal was expected to be used for 12 weeks with production target of 75.000 ton/week using two units of dozers. The total operation cost that was needed for PET 97 DP disposal was estimated to reach $1.450.513,50.
Analisis Biaya Konsumsi Bahan Bakar Alat Angkut Menggunakan Teori Antrean di PT. Harfia Graha Perkasa, Kabupaten Gowa Provinsi Sulawesi Selatan Anas, Aryanti Virtanti; Pune, Nataniel Deo; Tui, Rini Novrianti Sutardjo; Amalia, Rizki
Jurnal Penelitian Enjiniring Vol 26 No 2 (2022)
Publisher : Center of Techonolgy (COT), Fakultas Teknik, Universitas Hasanuddin

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25042/jpe.112022.01

Abstract

PT Harfia Graha Perkasa merupakan perusahaan yang bergerak dalam bidang penyedia jasa pembangunan konstruksi. Material konstruksi yang digunakan dikelola sendiri oleh perusahaan dengan menggunakan stone crusher yang terletak di Desa Bontojai, Kecamatan Parangloe, Kabupaten Gowa, Provinsi Sulawesi Selatan. Produk yang dihasilkan berupa debu batu, split 1/2, dan split 2/3. Proses produksi menggunakan satu unit alat gali muat Kobelco SK-200 yang melayani tujuh unit alat angkut yaitu Hino 500 dan Mitsubishi Fuso 220PS. Pada area loading point dan dumping point yaitu hopper, sering terjadi antrean alat angkut yang menunggu untuk dilayani. Dampak terjadinya antrean yaitu berkurangnya waktu kerja efektif sehingga memengaruhi biaya konsumsi bahan bakar. Oleh karena itu, penelitian ini dilakukan untuk menentukan jumlah alat angkut yang dibutuhkan menggunakan Teori Antrean dan menghitung biaya bahan bakar alat angkut. Diketahui waktu edar aktual alat angkut adalah 55,2 menit dan waktu kerja efektif alat adalah 1,84 jam/hari. Konsumsi bahan bakar Hino 500 adalah Rp433.836,00/bulan dan Mitsubishi Fuso 220PS adalah Rp385.632,00/bulan. Berdasarkan hasil analisis menggunakan Teori Antrean alat angkut dikurangi menjadi empat unit sehingga waktu edar menjadi 16,8 menit. Setelah itu dilakukan pengurangan terhadap waktu hambatan sehingga waktu kerja efektif alat menjadi 7,25 jam/hari dan biaya konsumsi bahan bakar dalam satu bulan Hino 500 sebesar Rp6.115.883,00/unit dan Mitsubishi Fuso 220PS sebesar Rp1.349.712,00/unit. Kombinasi alat angkut dengan biaya konsumsi bahan bakar paling rendah adalah empat unit Mitsubishi Fuso 220PS dengan biaya konsumsi bahan bakar sebesar Rp5.398.848,00/bulan.
Mine Scheduling of Lateritic Nickel Ore in The Mawar Block of PT Ang and Fang Brother Site Lalampu, Central Sulawesi Province, Indonesia Anas, Aryanti Virtanti; Syaifullah, Nanda Syafriana; Amalia, Rizki; Sutardjo Tui, Rini Novrianti
EPI International Journal of Engineering Vol 7 No 1 (2024): Volume 7 Number 1, February 2024
Publisher : Center of Techonolgy (COT), Engineering Faculty, Hasanuddin University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25042/epi-ije.022024.03

Abstract

PT Ang and Fang Brothers planned to open a new pit of lateritic nickel ore in Mawar Block. Mine scheduling of open-pit mines is an important thing in surface mine planning so the purpose of this research is to provide an overview of pit design and mining sequences, amount of production and number of equipment allocated in each sequence. The production targeted by the company was 50,000 tons by considering the mine recovery factor of 90%. Mine scheduling requires several data, namely cycle time, loss time, block model, equipment specifications and availability, slope and mine haul road geometry, and topography. The data used to design pit limits, mining sequences, and production scheduling. Based on the design of the mine pit, the total overburden that must be removed is 365,589 bcm and the total laterite nickel ore that must be stripped is 169,240 tons with a stripping ratio of 2.2:1 which is divided into three mining sequences. Total tonnage of lateritic nickel ore in the first to the third sequence is 55,677 tons, 55,518 tons, and 58,045 tons with overburden of 143,764 bcm, 136,055 bcm, and 85,770 bcm respectively. The equipment fleet of the first to the third sequence is 4 units’ loader with 17 units’ hauler, 4 units’ loader with 17 units’ hauler, and 3 units’ loader with 13 units’ hauler respectively.
The Export Potential of Mining Commodities of Indonesia Tui, Rini Novrianti Sutardjo; Anas, Aryanti Virtanti; Amalia, Rizki; Adachi, Tsuyoshi
EPI International Journal of Engineering Vol 5 No 2 (2022): Volume 5 Number 2, August 2022
Publisher : Center of Techonolgy (COT), Engineering Faculty, Hasanuddin University

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

The implementation of the export ban of the raw mineral commodities is one of the implications brought by the Mining Law Number 3 of the year 2020. The high contribution of the raw mining commodities towards the economy of Indonesia plays dual sides of a coin. First, it is seemingly more beneficial to increase the value of the raw commodities by processing and refining them first domestically. Then, as the raw commodities contribute largely, banning the export surely will bring a change towards the economy. Change in government’s regime initiate the review of the export ban. This research utilizes Herfindahl Hirschman Index and Revealed Comparative Advantage (RCA) to investigate how export ban can affect the economy growth. In analyzing the impact of the export ban, the very basic foundation is examining the export potential of the mining commodities. Analyzing the ores, metals, and minerals as export commodities, the ores and minerals seemingly are the prominent export commodities. Proved by the RCA index value, the government of Indonesia has a strong foundation to release the export ban. Additionally, the HH Index of market concentration indicates that the export trade of Indonesia is relatively independent towards its trading partner. Therefore, as the government of Indonesia sets to implement the export ban policy, this change in trade barriers is unlikely will disrupt the trade relations between Indonesia and its trading partners.
Pelatihan Pembuatan Database Geologi Melalui Aplikasi Surpac Bagi Siswa Jurusan Geologi Pertambangan SMK Penerbangan Techno Terapan Makassar Nur, Irzal -; Ramli, Muhammad; Anas, Aryanti Virtanti; Sutardjo Tui, Rini Novrianti; Amalia, Rizki; A, M. Fadhil Fajar; Lasefeati, M. Alfian
JURNAL TEPAT : Teknologi Terapan untuk Pengabdian Masyarakat Vol 6 No 2 (2023): Let us Collaborate for Community Issues
Publisher : Faculty of Engineering UNHAS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25042/jurnal_tepat.v6i2.426

Abstract

The creation of a geological database is the initial stage in the mineral estimation process. In this stage, the management and verification of exploration data in the form of borehole data is carried out using a software, one of which is Surpac. Surpac is quite flexible and efficient in meeting the needs of each commodity and mining method. One of the Vocational High Schools that teaches Mining Geology expertise is SMK Penerbangan Techno Terapan Makassar. The curriculum structure of this field consists of general subject groups and vocational subject groups. According to the Regulation of the Director General of Primary and Secondary Education of the Ministry of Education and Culture Number: 07/D.D5/Kk/2018 concerning the Curriculum Structure of Vocational High Schools (SMK)/Madrasah Aliyah Kejuruan (MAK), exploration techniques and mining techniques have the largest proportion in the curriculum structure. This competency requires students to know the characteristics and types of data in exploration activities and the use of technology such as computer programs. Limited access to Surpac software for geological database creation by students of SMK Penerbangan Techno Terapan Makassar causes a lack of knowledge in creating geological databases using Surpac software. The importance of creating a geological database for students of SMK Penerbangan Techno Terapan Makassar is used as a basis by the Department of Mining Engineering through the Laboratory Based Education (LBE) Collaboration program to conduct training on creating a geological database using Geovia Surpac software. The targeted aspect of the training is to increase students' knowledge about the importance of creating a database before estimating as well as introducing the Surpac application. In addition to achieving the target, the service team will later conduct lecture-based training directly to practice the geological database creation tutorial. This training activity also contains the delivery of initial material as well as giving pretests and posttests to measure the extent of students' understanding of database creation and also the Surpac application. The conclusion of this service is that the service carried out can be said to be successful because the results of the pretest and posttest conducted have significant differences where after being given material and also making tutorials, students understand more about the material and also the creation of the database both in terms of quality and quantity of the number of students who answer posttest questions. Based on this, it is recommended to make further training related to software that is often used in the mining world so that it can be a provision for students to enter the world of work.