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Jurnal Serambi Engineering
Published by Universitas Serambi Mekkah Aceh
ISSN : 25283561     EISSN : 25411934     DOI : https://doi.org/10.32672/jse
Core Subject : Science, Social, Engineering,
Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Engineering Environmental Science
Jurnal Serambi Engineering diterbitkan oleh Fakultas Teknik Universitas Serambi Mekkah Banda Aceh. Jurnal ini diterbitkan sebagai media untuk menyalurkan informasi hasil penelitian dibidang keteknikan baik yang dilakukan oleh para dosen dari Fakultas Teknik, khususnya dari Universitas Serambi Mekkah maupun dari pihak lain. Penelitian yang dipublikasikan dapat berupa penelitian lapangan maupun laboratorium serta kajian literatur.
Arjuna Subject : -
Articles 1,178 Documents
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Uji Efektivitas Implementasi Biomassa Pelet EFB dan Cangkang Sawit pada Co-Firing di PLTU Tembilahan Dimas Erlangga; Haryono Setiyo Huboyo; Ika Bagus Priyambada
Jurnal Serambi Engineering Vol 8, No 2 (2023): April 2023
Publisher : Fakultas Teknik

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32672/jse.v8i2.5978

Abstract

Energy consumption for power generation in Indonesia is highly dependent on fossil energy, which is mostly supplied from coal-fired power plants. Indonesia has the potential of biomass natural resources that are rich in Carbon Neutral fuels and can be an alternative to stone replacement fuels such as palm kernel shell biomass and pelet efb. Biomass effectiveness tests were conducted at PLTU Tembilahan Riau, with test variables of 25% palm kernel shell biomass co-firing and 5% EFB pelet biomass co-firing with a maximum operational load of 7 MW for 6-8 hours. The results of data analysis are done descriptively. The tested palm kernel shell biomass has a calorific value of 4190 kCal/kg and the calorific value of EFB pelets is 4084 kCal/kg. While the coal used in PLTU Tembilahan has a calorific value of 4199 kcal/kg. The emission results produced in the 5% EFB pelet biomass co-firing test process for sulfur dioxide (SO2) was 97.24 mg/Nm3 and Nitrogen Oxide (NOx) was 497.47 mg/Nm3. While the NOx value of co-firing 25% palm kernel shell biomass is 378.2 mg/Nm3 The emission value is still far below the required standard and below the average emission with 100% coal. The electricity production cost of co-firing 25% palm kernel shell biomass and 5% pelet biomass is more economical than the electricity production cost of 100% coal.
Optimasi Proses Koagulasi dan Flokulasi pada Pengolahan Primer Air Limbah Kawasan Industri ABC Zainur Risky Ardiansyah; Temmy Wikaningrum
Jurnal Serambi Engineering Vol 8, No 2 (2023): April 2023
Publisher : Fakultas Teknik

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32672/jse.v8i2.5868

Abstract

Optimasi proses koagulasi dan flokulasi pada pengolahan primer air limbah Kawasan Industri ABC dilakukan dengan metode jar test. Objek penelitian dilakukan pada unit koagulasi dan flokulasi pertama (kimia 1) di IPAL Kawasan Industri ABC. Percobaan dilakukan untuk menentukan jenis koagulan PAC terbaik untuk mengolah air limbah; mendapatkan kombinasi yang optimum dari dosis koagulan, dosis flokulan serta waktu flokulasi; dan membandingkan kualitas serta biaya pengolahan air limbah pada kondisi eksisting dengan kondisi optimum sesuai dengan hasil kajian pada penelitian ini sehingga dihasilkan proses pengolahan air limbah yang lebih efektif dan efisien. Metode penelitian yang digunakan adalah eksperimental dengan variabel bebas percobaan yaitu: jenis koagulan yaitu PAC A (17% Al2O3) dan PAC B (10% Al2O3); dosis koagulan (200, 250, 300, 350, 400, dan 450) ppm; dosis flokulan (1, 2, 3, 4, 5, dan 6) ppm; serta waktu flokulasi (20, 25, 30, 35, 40, dan 45) menit. Kualitas air limbah dari proses terbaik jar test kemudian dianalisis kandungan pH, dan kekeruhan (turbidity). Dari hasil percobaan diperoleh jenis koagulan terbaik yaitu koagulan PAC A serta kombinasi optimum dari dosis koagulan, dosis flokulan serta waktu flokulasi yaitu: dosis koagulan 200 ppm, dosis flokulan 4 ppm, dan waktu flokulasi 20 menit. Hasil uji laboratorium menunjukkan bahwa kekeruhan (turbidity) air limbah mengalami penurunan sebesar 98.33% dari 54.6 NTU menjadi 0.91 NTU. Setelah optimasi, estimasi biaya pengolahan air limbah dengan proses koagulasi dan flokulasi turun dari 4,773 IDR/m3 air limbah diolah per hari menjadi 1,774 IDR/m3 air limbah diolah per hari, dengan %penurunan sebesar 62.83%.
Strategi Pemantauan Kualitas Air Bersih pada Rumah Tangga Miskin di Kampung Holtekamp, Kota Jayapura, Papua Gaspar Bao Balabuana; Raynard C. Sanito; Alfred B. Alfons
Jurnal Serambi Engineering Vol 8, No 2 (2023): April 2023
Publisher : Fakultas Teknik

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32672/jse.v8i2.5964

Abstract

Jayapura City is an indicator of Papua's development in general. In 2012, the city of Jayapura had 25,653 poor households, with a total population of 102,612. Muara Tami District is a district with a total number of households that reaches 86.6%. The highest population density is in Muara Tami district, located in Holtekamp village with a total of 243 households. Clean water quality includes physical, chemical and biological parameters. Determination of precise parameters based on pollutant sources and determination of sampling points, as well as the weather are effective means of cost-efficiency in air quality monitoring. The results of the analysis show that the dug wells of Holtekamp village residents are in the category of heavy pollution. Most of the physical - chemical - biological conditions of the air did not meet the class I air quality standards. The lowest COD value was 25 mg / L and reached 35 mg / L, as well as the lead content (Pb), the lowest was 0.035 mg/L and the highest was 0.37. mg / L, while the lowest E. Coli content was 29 MPN / 100 mL and the highest was 390 MPN / 100 mL. This is due to poor sanitation and construction of dug wells. Keywords: Holtekamp, dug wells, water pollution
Optimalisasi Pelaksanaan Proyek Pembangunan Rumah sakit Gunadarma Medika dengan Metode CPM dan PERT Prabowo Angga Sujarno; Esa Julian Firdaus; Sutrisno Sutrisno
Jurnal Serambi Engineering Vol 8, No 2 (2023): April 2023
Publisher : Fakultas Teknik

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32672/jse.v8i2.5513

Abstract

Projects, of course, cannot be separated from the time factor. By reducing the time the project will run  more efficient and of course will reduce the set duration. CPM is one method that can reduce the total time of the project executed by determining the critical path. In this case, we discuss the Gunadarma Medika hospital and the Gunadarma University creative industry center building. The data needed in this study include the activities that occur, the duration of the activity and the schedule for carrying out the activity. The data obtained will be re-processed into a Net Work Diagram to describe the relationship between activities and the critical path.
Analisis Tegangan Bilah Turbin Angin Komposit Berpenguat Spar Ganda Ikramullah Ikramullah; Hendrix Noviyanto Firmansyah; Djarot Wahju Santoso
Jurnal Serambi Engineering Vol 8, No 2 (2023): April 2023
Publisher : Fakultas Teknik

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32672/jse.v8i2.6029

Abstract

The design of wind turbine blades requires structural design and material selection that can withstand aerodynamic loads. The required structural criteria for wind blades are strong and lightweight. Modeling and analysis of stress values were carried out using MSC Patran/Nastran software. The selected material is an E-Glass fiber composite with epoxy resin matrix and has 8 layers with different fiber directions in each layer with fiber direction arrangement [0°/±45°/90°]. The turbine blade model without a spar is compared with the double spar turbine blade. The results found that the stress of the double spar blade had a lower stress value with a maximum tensile stress of 8.83 MPa, while on the blade without spar the maximum tensile stress was 10.6 MPa, while the maximum compressive stress on the double spar blade was 8.68 MPa, the maximum compressive stress on the blade without spar was 11 MPa.
Analisis Pengaruh Nilai Bullwhip Effect dengan Metode Single Exponential Smoothing pada PT. XYZ Elsya Maharani; Ade Momon
Jurnal Serambi Engineering Vol 8, No 2 (2023): April 2023
Publisher : Fakultas Teknik

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32672/jse.v8i2.6006

Abstract

The Bullwhip Effect, or the significant difference in supply and demand, represents one of the issues that arise from the concept of supply chain management. Using a forecasting approach using the single exponential smoothing method, this research aims to evaluate the Bullwhip Effect's influence and lessen its incidence at PT. XYZ. The information used consists of requests and orders for MS Rack, Adapter AT, and Bracket products from January to December 2021. The Bullwhip Effect value for each product is calculated as part of data processing, while forecasting uses single exponential smoothing technique and recalculates the Bullwhip Effect value as part of the repair. According to the research results, a single exponential smoothing method with a = 0.9 results in the lowest MAD, MSE, and MAPE values and subsequently utilized to lower the bullwhip effect value. The calculation results show that the Bullwhip Effect has decreased for the three products, from 1.0008 to 1.0002 for MS Rack, from 0.9961 to 0.9957 for Adapter AT, and from 1.0035 to 1.0027 for Bracket. With these results, it is clear that demand is steady and that the Bullwhip Effect may be minimized using the single exponential smoothing approach.
Analisis Kualitas Hasil Produksi Kawat Baja Single Wire di PT. XYZ dengan Menggunakan Metode FMEA Arnanda Ahmad Ar Ridlo; Efta Dhartikasari Priyana; Yanuar Pandu Negoro
Jurnal Serambi Engineering Vol 8, No 2 (2023): April 2023
Publisher : Fakultas Teknik

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32672/jse.v8i2.6028

Abstract

PT XYZ is a steel wire specialist company engaged in manufacturing. PT. XYZ also makes quality the company's quality so that it will have a competitive advantage against competitors in the world market, because not all companies are able to make quality a superior strategy to compete. Therefore, companies are required to produce products with good quality. But in reality, the production field experienced various problems during the work process which resulted in defective products in the production process which were not good and raised question marks. This study aims to use the FMEA (Failure Mode and Effect Analysis) method in order to reduce product defects. In this study, an assessment was carried out with the calculation results in the form of an RPN (Risk Priority Number) value by filling out a questionnaire. In this method there are several tools used to help solve problems, namely pareto charts, fishbone diagrams,and flowcharts. In order to obtain data acquisition of 13 indicators of product defects at PT XYZ. The results showed that the highest risk of defects in corrugated wire products was loose roll bolts with an RPN value of 240, over diameters were deformed/rough dies with an RPN value of 336, and scratched wire was deformed/rough dies with an RPN value of 392.
Penerapan Metode Seven Tools pada Pengendalian Kualitas Produk Cacat di PT. XYZ Faris Akbar Ansori; Iwan Nugraha Gusniar
Jurnal Serambi Engineering Vol 8, No 2 (2023): April 2023
Publisher : Fakultas Teknik

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32672/jse.v8i2.5991

Abstract

Perkembangan industri yang terjadi saat ini membuat perusahaan berlomba mempertahankan dan meningkatkan kualitas produknya. Penelitian ini ditujukan untuk mengidentifikasi jenis cacat, serta mengetahui penyebab terjadinya cacat dan memberikan usulan alternatif perbaikan. Penelitian ini menggunakan bantuan metode seven tools untuk menganalisis data. Adapun data yang digunakan untuk kebutuhan penelitian yaitu laporan produksi yang memuat informasi jumlah produk dan jumlah produk cacat pada periode Januari-Oktober 2022. Hasil yang didapatkan pada penelitian ini diketahui terdapat dua jenis cacat pada part JK6000 yaitu No Cutting, dan Over Cutting. Dari hasil diagram Pareto kemudian dapat diketahui cacat over cutting menjadi jenis cacat yang paling dominan dengan 63%. Beberapa faktor yang menjadi penyebab cacat berdasarkan diagram fishbone yaitu pada faktor manusia, mesin, dan metode. Adapun usulan yang diberikan dalam penelitian ini yaitu pengadaan pelatihan untuk karyawan, pengadaan tabung udara tambahan, hingga perumusan SOP yang mengatur proses pembuatan dan standar pada produksi part JK6000 secara terperinci.
Analisis Perhitungan Effektivitas Mesin Takamaz x-150 di PT X Menggunakan Overall Equipment Effectiveness Rizky Maulana; Dene Herwanto; Sutrisna Sunjaya Stepanus Pamungkas Sitorus
Jurnal Serambi Engineering Vol 8, No 2 (2023): April 2023
Publisher : Fakultas Teknik

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32672/jse.v8i2.5771

Abstract

kebutuhan untuk menunjang kelancaran produktivitas dan daya saing perusahaan adalah ketersediaan mesin yang dapat bekerja dalam memenuhi target yang ditetapkan. PT. X bererak di bidang sparepart motor. Mesin yang menjadi objek penelitian adalah takamaz-x 150 pada mesin kali ini memiliki masalah pada downtime dan menyebabkan penghambatan hasil produksi. Penelitian ini bertujuan untuk mencari effektivitas mesin takamaz-x 150 dan menghitung kerugian dari kurangnya effektivitas mesin ini. Tujuan dalam penelitian kali ini  adalah untuk mengetahui hasil perhitungan overall equipment effectiveness (OEE) yang digunakan unntuk menghitung kehandalan mesin takamaz-x 150. Hasil dari penelitian OEE untuk januari-Desember 2021 yaitu sebesar 65,36% masih kurang dari standar global JIPM yaitu sebesar 85%. Secara umum masih belum tercapai kriteria World Class. Rendahnya nilai OEE yang di dapatkan pada mesin takamaz-x 150 dapat di sebabkan oleh beberapa faktor suplai barang dari produksi plant luar NG (material), tenaga manusia terbatas (manusia), Mesin macet (mesin), waktu maintenance tidak teratur (Metode) dan tempat kerja yang kurang bersih (lingkungan).
Evaluasi Kinerja Instalasi Pengolahan Air Limbah Rumah Sakit X di Jakarta Pusat Rizky Fathan Witjaksono; Mohammad Rangga Sururi
Jurnal Serambi Engineering Vol 8, No 2 (2023): April 2023
Publisher : Fakultas Teknik

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32672/jse.v8i2.6018

Abstract

Hospital X has an WWTP which since its inception until now has never been evaluated and there is a recycling tub that cannot function normally and there is a calculation error in the water mass balance to minimize the impact of wastewater on environmental pollution, so an evaluation of the WWTP unit is carried out. The purpose of this study is to evaluate WWTP and provide suggestions related to optimizing wastewater treatment at X Hospital to improve wastewater removal performance. This study refers to design criteria and quality standards based on literature and evaluation of existing conditions using secondary data and primary data. Based on the evaluation results of the WWTP, it was found that the wastewater discharge was 166.3 m3/day, has an efficiency that is included in the category of very efficient and efficient in processing wastewater pollutant parameters so that the wastewater treatment process runs well, and there is equalization, the first and second settling tanks, activated sludge, trickling filter, filtration, disinfection and recycling did not meet the design criteria so a recalculation was carried out. The solution provided is to tighten monitoring and testing of the condition of the quality of wastewater coming out of the WWTP unit by changing the sampling test method, re-measuring the quality of influent wastewater, improving the workings of the IPAL unit according to the applicable Standart Operation Procedure (SOPs).

Page 70 of 118 | Total Record : 1178

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