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All Journal Jurnal Ilmu Lingkungan Industrial Engineering Online Journal Jurnal Agrifoodtech Spektrum Industri
Faradhina Azzahra
Industrial Engineering, Department Faculty of Engineering, Universitas Diponegoro, Jl. Prof. Sudarto, SH, Tembalang, Semarang, Central Java, Indonesia 50275
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemistry Decision Sciences, Operations Research & Management Engineering Environmental Science Industrial & Manufacturing Engineering Materials Science & Nanotechnology

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Analisis Risiko Kerja Menggunakan Job Safety Analysis (JSA) Dengan Pendekatan Hazard Identification, Risk Assessment And Risk Control (Hirarc) di PT Indo Java Rubber Planting Co Faradhina Azzahra; Enny Purwati Nurlaili; Jonathan Dharmaputra Ratisan
Jurnal Agrifoodtech Vol. 1 No. 1 (2022): Juni: Jurnal Agrifoodtech
Publisher : Universitas 17 Agustus 1945 Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (621.298 KB) | DOI: 10.56444/agrifoodtech.v1i1.54

Abstract

PT Indo Java Rubber Planting Co. merupakan salah satu perusahaan yang menghasilkan produk karet SIR3L dan SIR 10 yang memiliki pangsa pasar besar di Indonesia. Akan tetapi dalam melakukan proses produksinya, PT Indo Java Rubber Planting Co. perlu menyadari pentinya memperhatikan keselamatan para pekerjanya. Tujuan penelitian ini adalah untuk mengidentifikasi risiko yang ada di area sortasi, pengeringan, danpengepresan PT Indo Java Rubber Planting Co., dengan menggunakan tools Job Safety Analysis (JSA) dan Hazard Identification, Risk Assessment, and Risk Control (HIRAC). Jenis teknik pengumpulan data yang digunakan adalah Studi Lapangan dengan melakukan pendaataan list risiko yang dapat timbul menggunakanJSA dan pengisian kuesioner severity dan likelihood di tiap list risiko oleh pekerja di area sortasi, pengeringan, dan pengepresan. Selain itu, pengambilan data juga dilakukan dengan melakukan wawancara.. Hasil yang diperoleh adalah sebagian besar risiko ada pada kategori low sebesar 44%, diikuti kategori medium sebesar37%, kategori high sebesar 19%, dan kategori extreme yang tidak ada atau 0%. Pengendalian risiko yang dapat dilakukan adalah dengan memberikan warna atau cat penanda, menggunakan sarung tangan, menggunakan sepatu boots karet, mengepel lantai, menggantung pisau, dan memberikan area khusus.
The Social Life Cycle Assessment in Traditional Brick Production to Formulate Recommendation and Improve Environmental Working Condition Faradhina Azzahra; Ratna Purwaningsih; Ulkhaq M. Mujiya; Arindyaningrum Rachma Khairunnisa; Jaysyu Muhammad Dzaky; Shania Kamalia
Jurnal Ilmu Lingkungan Vol 21, No 2 (2023): April 2023
Publisher : School of Postgraduate Studies, Diponegoro Univer

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/jil.21.2.341-349

Abstract

Achieving sustainable manufacturing has been recognized as a critical need due to the decrease in non-renewable natural resources, strict regulations related to the environment, and occupational health and safety. The brick industry is favored because it has a wide market and requires simple equipment and manufacturing processes. However, there are complaints from residents regarding the smoke from the production process which is considered disturbing to residents. Therefore, the study is aimed to assess the life cycle of bricks from the social aspect of the stakeholders involved. Data is collected with the questionnaire and scored from three different stakeholders Workers, the Local Community, and Society. The method used in this study is Social Life Cycle Assessment (S-LCA) using UNEP-SETAC 2009 guidelines. From the seven social impact categories used in the study, it is found that the average score of seven subcategories is 3,53 which means that the brick factory has a positive social impact on the stakeholders. The category with the lowest score is Socio-Economic followed by Health and Safety. Both lied in the neutral area indicating the brick factory can improve its production process especially in managing the carbon emission that could affect workers and the local community.
EVALUASI SIMULASI PERENCANAAN PERSEDIAAN PRODUK BBM BERDASARKAN METODE MIN-MAX DALAM UPAYA PENINGKATAN EFISIENSI KAPASITAS TANGKI DI PT XYZ Wulan, Titania Candra; Azzahra, Faradhina
Industrial Engineering Online Journal Vol 13, No 3 (2024): WISUDA PERIODE JULI TAHUN 2024
Publisher : Program Studi Teknik Industri, Fakultas Teknik, Universitas Diponegoro

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Abstract

AbstrakPengguna kendaraan bermotor di Indonesia meningkat 3% setiap tahunnya sehingga harusdiimbangi dengan peningkatan persediaan Bahan Bakar Minyak (BBM) kendaraan. Produk BBMmerupakan salah satu produk unggulan yang diproduksi PT XYZ. Produk ini terdiri atas tiga grades,yaitu A, B, dan C. Masing-masing grades memiliki demand dan kapasitas tangki penyimpanan yangberbeda-beda. Permasalahan utama yang terjadi di PT XYZ adalah bagaimana cara untukmenentukan tingkat persediaan yang tepat agar persediaan optimal dan bagaimana pergerakanstock tersebut. Sehingga dilakukan penelitian terkait pengendalian persediaan menggunakanmetode Min-Max Stock. Kemudian dilakukan simulasi dari hasil perhitungan untuk mengetahuiapakah solusi tersebut logis untuk diterapkan perusahaan atau tidak. Metode Min-Max stockmampu mengatasi permasalahan persediaan stok di tangki. Diperoleh hasil jumlah stock optimalagar tidak terjadi overstock maupun stock out atas permintaan pada produk A adalah ±400MB/bulan; B adalah ±120 MB/bulan; dan C adalah ±60 MB/bulan.Kata kunci: persediaan, minimum-maximum, tangki, kelebihan stock, kekurangan stock Abstract[Evaluation of Fuel Product Inventory Planning Simulation Based on The Min-Max Method toImprove Efficiency Tank Capacity at PT XYZ] Motorized vehicle users in Indonesia are increasingby 3% annually, so it must be balanced with an increase in the stock of fuel oil (BBM) for vehicles.BBM product is one of the superior products produced by PT XYZ. This product consists of threegrades, namely A, B, and C. Each grade has different demands and storage tank capacities. Themain problem that occurs at PT XYZ is how to determine the right inventory level so that inventoryis optimal and how the stock moves. So that research is carried out related to inventory controlusing the Min-Max Stock method. Then a simulation of the calculation results is carried out to findout whether the solution is logical for the company to implement or not. The Min-Max stock methodis able to overcome the problem of stock inventory in the tank. The optimal number of stock resultsis obtained so that overstock or stock out does not occur on demand for product A, which is ±400MB/month; B is ±120MB/month; and C is ±60 MB/month.Keywords: inventory, minimum-maximum, tank, overstock, stock out
OPTIMALISASI PRODUKSI PRODUK X MENGGUNAKAN PERAMALAN TIME SERIES DAN PERENCANAAN AGERGAT (STUDI KASUS PT. PHAPROS) Kamal, Rafi Dzakwan; Purwanggono, Bambang; Azzahra, Faradhina
Industrial Engineering Online Journal Vol 13, No 1 (2024): WISUDA PERIODE JANUARI TAHUN 2024
Publisher : Program Studi Teknik Industri, Fakultas Teknik, Universitas Diponegoro

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Abstract

AbstrakAktivitas yang dapat menekan biaya produksi seminimal mungkin agar dapat mewujudkan efisiensi perusahaan adalah dengan meramalkan jumlah permintaan. PT Phapros merupakan perusahaan yang bergerak pada bidang produksi obat. PT Phapros memiliki masalah pada perencanaan produksi mereka, khususnya produk X, dimana produk X yang diproduksi berdasarkan forecasting berbeda jauh dengan aktual, dengan nilai MAPE selama tahun 2023 adalah sebesar 77%. Nilai MAPE yang melebihi 50% menandakan bahwa kemampuan model peramalan yang digunakan buruk. Hal ini dapat menyebabkan tambahan biaya, yaitu biaya simpan dan biaya buang. Tujuan dari penelitian ini adalah untuk menemukan metode peramalan terbaik untuk produk X dan memberikan rekomendasi atas permasalahan peramalan yang dialami PT Phapros untuk kasus produk X. Berdasarkan perhitungan beberapa metode peramalan, yaitu Holt’s Winter dan SARIMA, didapatkan metode SARIMA (0,1,1) (1,1,1) 12 sebagai metode peramalan untuk produk X dengan nilai MAPE paling rendah, yaitu sebesar 13,43%. Namun, metode Holt’s Winter Multiplicative masih dapat digunakan sebagai alternatif untuk peramalan produk X dikarenakan MAPE yang dihasilkan sebesar 16,83% dan masih masuk dalam kategori baik. Saran dari penelitian ini adalah bahwa untuk peramalan produk X dapat menggunakan metode SARIMA dan juga dapat menggunakan metode Holt’s Winter Multiplicative sebagai alternatif.Kata kunci: Forecasting; Additive Holt’s Winter; Multiplicative Holt’s Winter; SARIMAAbstract[Title: Optimizing The Production of Product X Using Time Series Forecasting and Aggregate Planning (Case Study: PT Phapros)] The endeavor to minimize production costs and enhance efficiency in companies often hinges on accurate demand forecasting. PT Phapros, a pharmaceutical production company, faces a significant challenge in production planning for its product X. The forecasting for this product exhibits a substantial deviation from actual production, with a concerning Mean Absolute Percentage Error (MAPE) of 77% in 2023. Such discrepancies can result in additional costs, including holding and disposal expenses. The research objective is to identify the optimal forecasting method for product X. Through a comparison of forecasting methods such as Holt’s Winter and SARIMA, it was determined that the SARIMA (0,1,1) (1,1,1) 12 method yields the lowest MAPE at 13.43%. Nevertheless, the Holt’s Winter Multiplicative method remains a viable alternative with a 16.83% MAPE, still falling within the acceptable range. The recommendation is for PT Phapros to adopt the SARIMA method as the primary forecasting tool for product X, with Holt’s Winter Multiplicative serving as a suitable alternative.Keywords: Forecasting; Additive Holt’s Winter; Multiplicative Holt’s Winter; SARIMA
ANALISIS POSTUR KERJA KARYAWAN DENGAN MENGGUNAKAN METODE REBA DENGAN TOOLS NORDIC BODY MAP DI PT. SANDANG ASIA MAJU ABADI Hernantya, Anisa Rizky; Azzahra, Faradhina
Industrial Engineering Online Journal Vol 13, No 4 (2024): WISUDA PERIODE OKTOBER TAHUN 2024
Publisher : Program Studi Teknik Industri, Fakultas Teknik, Universitas Diponegoro

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Abstract

Abstrak PT Sandang Asia Maju Abadi merupakan perusahaan yang memproduksi pakaian denim pria dan wanita. Pada lantai produksi PT Sandang Asia Maju Abadi, semua proses produksi dilakukan dengan menggunakan mesin atau alat bantu lainnya, tetapi beberapa masih menggunakan tenaga manusia. Beberapa postur kerjakhususnya pada hand and printing departement, laundry departement, finishing departement, warehousedepartment dan production department para pekerjanya memiliki postur kerja berdiri, membungkuk danduduk dengan kegiatan mengangkat, memindahkan, membawa dan lain-lain. Sehingga, diperlukan adanyaanalisis postur kerja untuk mengetahui kategori risiko dengan metode Rapid Entire Body Assessment(REBA) dan tindakan perbaikan apa yang harus dilakukan. Penelitian dilakukan dengan pengamatanlangsung, wawancara, dan penyebaran kuesioner Nordic Body Map (NBM). Hasil penelitian menujukanterdapat 3 pekerja yang memiliki skor REBA tertinggi yakni pekerja sewing, laundry dan bahan bakarmemiliki skor 8 sehingga perlu dilakukan perbaikan. Usulan perbaikan untuk pekerja sewing adalahperbaikan kursi kerja dan penambahan jam istirahat, perbaikan untuk pekerja laundry adalah penambahanfitur hidrolik pada tempat baju yang telah di cuci dan perbaikan untuk pekerja bahan bakar adalahperubahan troli dorong.Kata kunci: Muskoleskeletal, Kuisioner Nordic Body Map, postur kerja, REBA Abstract [Title: The Analysis of Employees' Work Posture Using the Rapid Entire Body Assessment (REBA)Method with Nordic Body Map Tools at PT. Sandang Asia Maju Abadi, Semarang City.] PT SandangAsia Maju Abadi is a company that produces men's and women's denim clothing. On the production floorof PT Sandang Asia Maju Abadi, all production processes are carried out using machines or other assistivedevices, but some still use human labor. Some work postures, especially in the hand and printingdepartment, laundry department, finishing department, warehouse department and production department,the workers have standing, bending and sitting work postures with lifting, moving, carrying and otheractivities. Thus, it is necessary to have a work posture analysis to find out the risk categories with the RapidEntire Body Assessment (REBA) method and what corrective actions must be taken. The research wasconducted by direct observation, interviews, and distribution of the Nordic Body Map (NBM)questionnaires. The results of the study show that there are 3 workers who have the highest REBA scores,namely sewing, laundry and fuel workers who have a score of 8, thus requiring improvement. Proposedimprovements for sewing workers are improving the work chairand adding rest hours, improvements forlaundry workers are adding hydraulic features to the place where clothes have been washed andimprovements for fuel workers are changing push trolleys.Keywords: Muskoleskeletal, Nordic Body Map Questionnaires, REBA, work posture
ANALISIS PENGENDALIAN PERSEDIAAN SPARE PART KIND-13 GENERAL METALC PADA PT INDOCEMENT TUNGGAL PRAKARSA TBK PLANT CIREBON Michelle, Elfriede; Azzahra, Faradhina
Industrial Engineering Online Journal Vol 13, No 4 (2024): WISUDA PERIODE OKTOBER TAHUN 2024
Publisher : Program Studi Teknik Industri, Fakultas Teknik, Universitas Diponegoro

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Abstract

AbstrakSetiap perusahaan, baik itu perusahaan manufaktur maupun jasa, selalu membutuhkan persediaan. Pengelompokandengan klasifikasi ABC dalam pengendalian persediaan berguna untuk mengetahui tipe barang, dimulai dari barangyang nilainya paling tinggi hingga terendah. Jenis penelitian yang digunakan adalah Exploratory Study denganbantuan analisis kualitatif yaitu nilai rata- rata persediaan. Tujuan penelitian ini adalah untuk menentukanklasifikasi komponen KIND-13 General Metalc pada komponen auto purchase menggunakan metode analisis ABC,kemudian menganalisis perbandingan pengendalian persediaan yang telah dilakukan perusahaan pada sistem ERPdengan hasil pengolahan data yang dilakukan peneliti dengan menentukan metode manakah yang paling optimumbila diterapkan. Hasil Penelitian ini menunjukkan komponen yang termasuk kelas A sebanyak 7 item, pada kelas Bsebanyak 7 item dan pada kelas C sebanyak 20 item. Hasil perhitungan meperlihatkan bahwa metode EOQ, metodeMin-Max Stock dan metode POQ menunjukkan hasil yang berbeda. Hanya Metode EOQ saja yang menunjukkanterjadinya inventory level pada semua item dengan rata-rata persentase penurunan sebesar 73%, dan sebagian besarkomponen mencapai penurunan 86% sehingga metode EOQ merupakan metode terbaik daripada metode Min-MaxStock dan Metode POQ. Dari hasil tersebut perusahaan perlu menerapkan metode EOQ untuk mengendalikanpersediaan spare part KIND-13 General Metalc supaya dapat menghemat biaya pengeluaran.Kata kunci: Analisis ABC, Persediaan, Metode Min-Max Stock, Metode EOQ, Metode POQ AbstractEvery company, manufacturing or service company, always needs supplies. Grouping with ABC classification ininventory control is useful for knowing the type of goods, starting from the highest value items to the lowest. The typeof research used is Exploratory Study with qualitative analysis, namely the average value of inventory. The purposeof this research is to determine the classification of General Metalc's KIND-13 components in auto purchasecomponents using the ABC analysis method, then analyze the comparison of inventory control that has been carriedout by the company in the ERP system with the results of data processing carried out by researchers by determiningwhich method is the most optimal when applied. The results of this study show components including class A as manyas 7 items, class B as many as 7 items and class C as many as 20 items. The calculation results show that the EOQmethod, Min-Max Stock method and POQ method show different results. Only the EOQ Method shows the occurrenceof inventory levels on all items with an average percentage decrease of 73%, and most components achieve a decreaseof 86% so that the EOQ method is the best method than the Min-Max Stock method and POQ method. From theseresults, companies need to apply the EOQ method to control the inventory of General Metalc's KIND-13 spare parts,an effort to save costs.Keywords: ABC Analysis, Inventory, Min-Max Stock Method, EOQ Method, POQ Method
PERANCANGAN SISTEM INFORMASI PENENTUAN URUTAN DISTRIBUSI BBM BERBASIS MACRO VISUAL BASIC FOR APPLICATION (VBA) DAN ALGORITMA EXHAUSTIVE SEARCH PADA PERTAMINA INTEGRATED TERMINAL SEMARANG Davin, Andhika; Azzahra, Faradhina
Industrial Engineering Online Journal Vol 13, No 3 (2024): WISUDA PERIODE JULI TAHUN 2024
Publisher : Program Studi Teknik Industri, Fakultas Teknik, Universitas Diponegoro

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Abstract

Abstrak Integrated Terminal Semarang adalah bagian dari PT Pertamina Patra Niaga yang berlokasi di JalanPengapon Semarang, Integrated Terminal Semarang memiliki tiga fungsi utala, yaitu sebagai tempatpenerimaan, penimbunan dan pendistribusian bahan bakar minyak (BBM) untuk daerah JawaTengah. Dalam fungsi pendistribusian, Pertamina Integrated Terminal Semarang merupakanpenyalur BBM utama di area Jawa Tengah. Namun ternayata tidak ada arahan dari PertaminaIntegrated Terminal kepada AMT (Awak Mobil Tangki) mengenai urutan pengiriman SPBU yangharus dilalui. Oleh karena itu dilakukan penelitian untuk merancang suatu sistem informasi berbasisVisual Basic for Aplication dan Algoritma Exhaustive Search untuk mendapatkan urutan pengirimanpaling optimal. Data yang digunakan adalah data jarak dari 21 SPBU di kota semarang yang laluakan diolah menggunakan algoritma Exhaustive Search dan didapatkan sebuah prototype sisteminformasi berupa file excel.Kata kunci: TSP, Exhaustive Search, Visual Basic for Application Abstrak Information System Development For Determining Fuel Distribution Order Based On MacroVisual Basic For Application (VBA) And Exhaustive Search Algorithm At Pertamina IntegratedTerminal Semarang. Integrated Terminal Semarang is part of PT Pertamina Patra Niaga located onJalan Pengapon Semarang, Integrated Terminal Semarang has three main functions, namely as aplace to receive, hoard and distribute fuel oil (BBM) for the Central Java area. In the distributionfunction, Pertamina Integrated Terminal Semarang is the main fuel distributor in the Central Javaarea. However, there is no direction from Pertamina Integrated Terminal to AMT (Tank Car Crew)regarding the order of gas station delivery that must be passed. Therefore, research was conducted todesign an information system based on Visual Basic for Application and exhaustive search Algorithmto obtain the most optimal delivery order. The data used is distance data from 21 gas stations inSemarang which will then be processed using a exhaustive search algorithm and obtained a prototypeinformation system in the form of an excel file.Keywords: TSP, exhaustive search, Visual Basic for Application
Closing the Loop: Goal Programming-Based Optimization in a Tofu-Centered Agro-Eco-Industrial Park Putri, Ade Aisyah Arifna; Purwaningsih, Ratna; Azzahra, Faradhina; Hartini, Sri; Irawan, Candra; Oryzanti, Parwa
Spektrum Industri Vol. 23 No. 2 (2025): Spektrum Industri - October 2025
Publisher : Universitas Ahmad Dahlan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12928/si.v23i2.396

Abstract

Developing an agro-eco-industrial park based on the tofu industry must consider the balance of each agro-industry's production capacity. This research aims to (1) develop an optimization model for material flow between industries and (2) explain the material flow and provide waste utilization recommendations for other industries to create a closed loop. The industries involved in this agro-eco-industrial park consist of the tofu industry, fertilizer producers, tempeh gembus producers, cattle farms, biodigesters, paddy farmers, soybean producers, and nata de soya producers. The model was created using a goal programming approach. Traditional tofu processing generally generates a variety of waste with high nutritional value, but it is detrimental to the environment if disposed of directly. The flow of materials among the related industries is based on the tofu industrial cluster, which consists of 30 industries in Grobogan, Central Java, Indonesia. The expected output comprises eight decision variables representing the production amount of industries. Data analysis reveals that the model outperforms the current conditions, with the waste recycling rate increasing from 14 % to 97 %. This model converts waste into valuable resources such as fertilizer and gas energy through biodigester processing and other economically viable methods.
Co-Authors Ade Aisyah Arifna Putri Arindyaningrum Rachma Khairunnisa Bambang Purwanggono Candra Irawan Davin, Andhika Enny Purwati Nurlaili Hernantya, Anisa Rizky Jaysyu Muhammad Dzaky Jonathan Dharmaputra Ratisan Kamal, Rafi Dzakwan Michelle, Elfriede Oryzanti, Parwa Ratna Purwaningsih Ratna Purwaningsih Shania Kamalia Sri Hartini Ulkhaq M. Mujiya Wulan, Titania Candra