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Kab. aceh selatan,
Aceh
INDONESIA
Jurnal Inotera
Published by Politeknik Aceh Selatan
ISSN : 25487574     EISSN : 25811274     DOI : -
Core Subject : Science, Engineering,
Computer Science & IT Engineering Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering
Arjuna Subject : -
Articles 301 Documents
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Analysis of Material Supply Chain Risk Weight Using Severity Index Method Debataraja, Lisherly; Purba, Marsedes; Amrizal; Budianto, Gallio; Sinaga, Naga Raya
Jurnal Inotera Vol. 9 No. 2 (2024): July - December 2024
Publisher : LPPM Politeknik Aceh Selatan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31572/inotera.Vol9.Iss2.2024.ID423

Abstract

Material delay is a vital problem in the completion of construction work, this is closely related to the understanding of the flow of material supply. So it takes risk weight analysis from the internal side (supply, control, process, demand) and external (disaster factor). This study began with a literature study to obtain a list of risks, then data collection using a questionnaire method to 50 respondents who are experts in construction material procurement. Furthermore, a risk analysis was carried out using the severity index method. From this analysis, the average risk from the supply side was 16.40%, the control risk was 16.29%, the process risk was 11%, the demand risk was 16.11% and the disaster risk was 13.79%. There are two most dominant delay risks, namely material delays due to constraints in the factory process to material limitations at the supplier and late payments from the main contractor to the subcontractor so that material orders are late.
Implementation of Bamboo Chips from Pantai Labu Region in Enhancing Compressive Strength of Fiber Concrete Wulan Dary, Rhini; Muhammad Ari Subhan Harahap; Mizanuddin Sitompul; Ernie Shinta Yosephine Sitanggang; Josep Hadipramana
Jurnal Inotera Vol. 9 No. 2 (2024): July - December 2024
Publisher : LPPM Politeknik Aceh Selatan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31572/inotera.Vol9.Iss2.2024.ID424

Abstract

Concrete is widely used in construction due to its high compressive strength and durability. This study investigates the use of bamboo chips from the Pantai Labu region as a fiber material mixed with concrete to enhance its compressive strength. The research evaluates the effectiveness of different percentages of bamboo fiber chips, ranging from 0% to 2.5% by cement weight. Cylindrical concrete samples with diameters of 15 cm and heights of 30 cm were tested at 7, 14, and 28 days. The results demonstrate that adding 1% bamboo chips increased the compressive strength to 31.51 MPa, compared to the normal concrete strength of 30.04 MPa. This shows the potential of bamboo chips to improve the quality and sustainability of concrete production.
Analysis of Green Open Space Needs Based on Population Projections in Medan Baru Subdistrict Tri Septiningtiyas, Dina; Darman Ferianto Saragih; Hadianti Muhdinar Pasaribu; Syiril Erwin; Meraty Ramadhini
Jurnal Inotera Vol. 9 No. 2 (2024): July - December 2024
Publisher : LPPM Politeknik Aceh Selatan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31572/inotera.Vol9.Iss2.2024.ID425

Abstract

The availability of adequate green open space (RTH) is one of the efforts to maintain optimal environmental quality. The need for green open space is affected by population and area. Based on the Law No. 26 Year 2007 on Spatial Planning, it is explicitly determined that the proportion of public green open space is 20%. Sub-district Medan Baru is a sub-district located in the city center, part of which is a commercial and service area. Sub-district Medan Baru is also one of the sub-districts planned to be the city service center, which has the function of trade / business activity center, service activity center and provincial and city government activities, so the population density in the area is dense and affects the need for green space. The data used in this research are land use map, administrative map of Medan Baru sub-district and green open space coordinate data of Medan Baru sub-district. From the results of the study, it was obtained that the area of public green space in Medan Baru Sub-district is 18.78 hectares and it can be interpreted that the availability of public green space in Medan Baru Sub-district is 3.48% of the total area.
Mapping the Distribution of High Buildings in West Medan Subdistrict Using Geographic Information System (GIS) Citra Utami; Dina Septiningtyas; Lisherly R Debataraja; Tetra Oktaviani; Fahrizal Zulkarnain
Jurnal Inotera Vol. 9 No. 2 (2024): July - December 2024
Publisher : LPPM Politeknik Aceh Selatan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31572/inotera.Vol9.Iss2.2024.ID426

Abstract

Cities are one of the main centers for the development of urban areas. The opportunity for investment activities in a city is one of the biggest pull factors for migration. Medan's rapid development can be seen from the construction of many tall buildings such as malls, apartments, and offices. The granting of permits for the construction of these high-rise buildings is closely related to urban spatial planning. Medan City does not yet have a 3D map of the distribution of high-rise buildings, there is only data on the number and location of high-rise buildings. Therefore, urban spatial mapping of high-rise buildings is needed. The model in this research uses a GIS computer model integrated in Arcgis software by taking the object of West Medan sub-district. The results of this study are the suitability of the distribution of tall buildings with a fairly dense uniform pattern in the West Medan sub-district where this sub-district is indeed a service center for trade/business, services and provincial and municipal government activities, and the economy
Analysis of Supply Chain Risk Control in Aceh Nut Work Using the House Of Risk Method Approach (Case Study: Nutmeg Oil Industry in South Aceh Regency) Dian Maulina; HY Sastra; M Dirhamsyah
Jurnal Inotera Vol. 8 No. 2 (2023): July - December 2023
Publisher : LPPM Politeknik Aceh Selatan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31572/inotera.Vol8.Iss2.2023.ID427

Abstract

South Aceh nutmeg oil plays an important role in the trade of essential oils from Indonesia. 70-80% of Indonesia's nutmeg oil trade comes from South Aceh. However, on the other hand, there is a disruption in price stability in the production of South Aceh nutmeg oil which is influenced by the quality standards of nutmeg oil. The purpose of this study is to identify potential risks that arise in the supply chain, find risk agents as the cause of the risk and control the risk by designing risk mitigation and its formulation in the structure of the nutmeg oil supply chain in South Aceh. The technique used in this study is the House Of Risk (HOR) method. The study has obtained 23 risk events and 17 priority risk agents covering Source, Make, Distribution and Costumer (Return) activities. Then from the risk agents obtained, 11 priority mitigation actions were also obtained as a control of the performance of the nutmeg oil supply chain that can be applied in an effort to reduce the occurrence of supply chain risks so that the industry is able to produce optimally and is able to improve the quality of nutmeg oil which of course has a positive impact on the selling value.
Level of Wear Occurring on the Long Arm due to Friction with Palm Kernel Shells in the Digester Machine Dejoi Irfian Situngkir; Sitorus, Fransnazoan; M. Rahmad Hidayat Panggabean
Jurnal Inotera Vol. 9 No. 2 (2024): July - December 2024
Publisher : LPPM Politeknik Aceh Selatan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31572/inotera.Vol9.Iss2.2024.ID428

Abstract

A digester is a piece of equipment consisting of a cylindrical tube with both long and short knives. This tool is used to aid the processing by slicing and stirring, making the fruit soft. Common issues with digesters usually involve wear and breakage of the digester knives. Wear is generally understood as the loss of material due to the mechanical interaction between two moving and loaded surfaces. Wear can disrupt the production process, affecting the company's productivity. The objective of this research is to determine the volume and rate of wear on the long arm of a cast steel digester. Based on this study, the wear value obtained for the long arm digester is a wear volume of 19,117,969 mm³ and a wear rate of 9,558.984 mm³/hour under a load of 23,520 N over 2,000 hours of operation. This indicates that the replacement of the long arm digester should be performed according to the specified operational time limits while considering the load entering the digester, in order to prevent a decrease in the company's productivity.
Prototype of Fire, Gas, and Steam Pressure Detection Based on Internet of Things (Case Study: PT Agro Sinergi Nusantara) Inzar Salfikar; Faulianur, Rizki; Yhona Syela Inri; Dodi Syahputra
Jurnal Inotera Vol. 10 No. 1 (2025): January-June 2025
Publisher : LPPM Politeknik Aceh Selatan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31572/inotera.Vol10.Iss1.2025.ID429

Abstract

This study is based on a conversation that took place during an industrial vist by Aceh Polytechnic D3 Mechatronics students at PT Agro Sinergi Nusantara (ASN), where the company does not yet have a system in place to monitor gas, steam, and fire pressure in order to reduce hazardous circumstances in the factory. A fire detection system is needed to prevent fires because palm oil factories often have processes that involve flammable materials and have the potential to cause fires. The steam pressure in the boiler of the Steam Power Plant (PLTU) system at PT ASN needs to be monitored to prevent explosions. The PLTU combustion system that utilizes palm oil pulp and empty bunches produces carbon emissions that are harmful to health. Information on carbon gas levels also needs to be known to ensure whether the surrounding conditions are dangerous. The presence of fire, gas and steam pressure needs to be monitored via a smartphone connected to the Internet network. Thus, workers do not have to be close to the machine area because monitoring is sufficient on a smartphone. The research method is a case study at PT ASN, surveys and interviews, literature studies, experiments and simulations on prototypes and data collection in the laboratory. The data used for measurement are fire and gas from matches and air pressure from the compressor. The results obtained, this prototype is able to detect fire, gas and vapor pressure. When fire is detected, pressure and gas that exceed the setting limit will trigger the alarm to activate. The presence of fire and gas and vapor pressure data can be monitored on a smartphone with a delay of 17 seconds. The average accuracy of pressure detection with arduino is 96.20% and smartphone 97.07%.
Pemanfaatan Abu Boiler Kelapa Sawit sebagai Bahan Pengisi dalam Campuran Aspal PG 70 Pada Lapis AC Mod-WC Tetra Oktaviani; Wirdatun Nafiah Putri; Kusumadi; Nofriadi; Henny Lydiasari
Jurnal Inotera Vol. 9 No. 2 (2024): July - December 2024
Publisher : LPPM Politeknik Aceh Selatan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31572/inotera.Vol9.Iss2.2024.ID430

Abstract

The Pavement Design Manual 2024, which requires the use of asphalt PG 70 for loads above 30 million ESAL and the increasing volume of palm oil waste that requires handling and reuse, as well as the need for alternative materials to be used as fillers, make it necessary to develop environmentally friendly materials by combining asphalt PG-70 and palm oil fuel ash as fillers. This pavement mixture is expected to be a mixture containing environmentally friendly road construction materials as well as a solution to the utilization of palm oil waste that can withstand high traffic loads. Testing of aggregate materials, asphalt, and asphalt mixtures was carried out at the Civil Engineering Laboratory of Medan State Polytechnic, in accordance with SNI, which refers to the General Specifications for Road and Bridge Construction Work 2018 Revision 2. The results obtained were that palm oil fuel ash as filler in asphalt mixture PG 70 gave an average value of stability above 1000 kg, density of 2-3 gr/ml, and VFA above 65% in all variations of filler content, for VIM values between 3-5% in the 50% and 75% variations, and VMA values above 15% in the 50%, 75% and 100% variations, while the flow value did not meet the standard value of 2-4 mm for all variations of filler content. Asphalt mixture PG 70 with palm oil fuel ash filler produces good density and stability values, but under repeated loading it will easily cause waves and rutting in the pavement due to the rigid nature of the mixture with a very high flow value and thus allow bleeding because the value of VFA is also very high.
The Use of 3D-CRT Technique in dose Distribution Analysis for Cervical Cancer Treatment Planning An Nisa Octavia; Devina R. P. S. P; Robert Janssen Stevenly; Ave Kurnia Sari
Jurnal Inotera Vol. 10 No. 1 (2025): January-June 2025
Publisher : LPPM Politeknik Aceh Selatan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31572/inotera.Vol10.Iss1.2025.ID353

Abstract

Three Dimensional Conformal Radiotherapy (3D-CRT) is a technique used in designing a cancer treatment (treatment planning system) using radiation emitted through a gantry with direction, angle, number of fields, and radiation energy according to needs. Determination of direction, angle, number of fields, and radiation energy precisely aims to provide effectiveness in cancer treatment. The purpose of this study was to determine the efficient use of multiple gantry angles in cervical cancer using a LINAC machine with 3D-CRT technique. Data processing in this study was carried out using quantitative analysis techniques, namely descriptive statistics. This analysis technique uses secondary data obtained from the results of the description that has been carried out by doctors at the Radiotherapy Installation. Data processing was carried out by carrying out a treatment planning system on 7 patients with each patient receiving planning using 4 gantry angles and 6 gantry angles. These results are visualized in the form of tables and graphs of absorbed doses received by patients. Based on this study, it can be concluded that using the 3D-CRT technique in cases of cervical cancer, using 4 gantry angles is more efficient than using 6 gantry angles.
Application of Single Minute Exchange Die (SMED) Method to Minimize Setup Time on 350T Capacity Molding Machine Sumasto, Fredy; Arrofah, Muhammad Arif; Pratama, Indra Rizki; Purbaningrum, Sanurya Putri; Satria, Adam; Rapi, Amrin
Jurnal Inotera Vol. 10 No. 1 (2025): January-June 2025
Publisher : LPPM Politeknik Aceh Selatan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31572/inotera.Vol10.Iss1.2025.ID422

Abstract

This study aims to apply the Single Minute Exchange of Die (SMED) method in reducing setup time on a 350T capacity molding machine at PT HMG. The data collection results showed that the frequency of mold changes reached 70 times a month, with the average time required for mold changes before the implementation of SMED 173 minutes. After the implementation of SMED, the mold change time was successfully reduced to 64 minutes, reflecting a decrease of 63%. The implementation of SMED was carried out through several stages, including converting internal activities to external ones, which aimed to reduce machine downtime. Optimization of the remaining activities was also carried out, such as reducing the temperature drop time on the barrel and hot runner, which previously took 15 minutes, now only 5 minutes. The final results showed that machine downtime cost savings reached Rp11,200,000 per month after the implementation of SMED, with total downtime costs decreasing from Rp30,274,999 to Rp19,074,999 per month. This study proves that implementing the SMED method can significantly improve time efficiency, reduce production costs, and create more efficient operational standards. The findings provide a solid basis for further development in industry manufacturing practices.

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