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All Journal TEKMAPRO Journal of Industrial Engineering and Management JISI UMJ (Jurnal Integrasi Sistem Industri UMJ) The Journal of Pure and Applied Chemistry Research International conference on Information Technology and Business (ICITB) Briliant: Jurnal Riset dan Konseptual Journal of Research and Technology EKONOMIS : Journal of Economics and Business Jurnal Sistem Cerdas Jurnal Teknik Industri Terintegrasi (JUTIN) JURMATIS : Jurnal Manajemen Teknologi dan Teknik Industri Nusantara Science and Technology Proceedings Indonesian Journal of Industrial Engineering & Management Journal La Multiapp Industrika : Jurnal Ilmiah Teknik Industri Jurnal Penelitian Inovatif Indonesian Journal of Innovation Studies Jurnal Pengbdian Teknik Mesin Teknika STTKD: : Jurnal Teknik, Elektronik, Engine Journal of Social Commerce Eduvest - Journal of Universal Studies The Indonesian Journal of Computer Science Faraday: Journal of Fundamental Physics, Research, and Applied Science
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Teknik Industri, FTI-UPN ”Veteran” Jawa Timur
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Evaluasi Pemilihan Sustainable Supplier Dolomit Dengan Metode FAHP dan TOPSIS Di PT. Petrokimia Gresik Nuswantoro, Wira Yudha; Ernawati, Dira; Nugraha, Isna
BRILIANT: Jurnal Riset dan Konseptual Vol 10 No 3 (2025): Volume 10 Nomor 3, Agustus 2025
Publisher : Universitas Nahdlatul Ulama Blitar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.28926/briliant.v10i3.1912

Abstract

PT. Petrokimia Gresik, the most comprehensive fertilizer agro-industry company in Indonesia, produces a product called Filler Plus, which requires dolomite as a raw material. Amid pressure from the government, especially on environmental issues, companies are creating production strategies that are environmentally friendly but also prioritize economic factors (economic profits) and the impact on the social environment. One of these strategies can be done by selecting the right supplier. This research evaluates supplier performance based on sustainable aspects (economic, environmental, social) using the cut-off point method for selecting sub-criteria, FAHP for weighting sub-criteria, and TOPSIS for ranking suppliers based on predetermined sub-criteria. This study uses qualitative and quantitative approaches. The research results show that supplier S2 is ranked highest with a coefficient value of 0.826, followed by S3 (0.442), S4 (0.357), and S1 (0.256). This study can serve as a basis for strategic decision-making in selecting sustainable dolomite suppliers by considering the most relevant criteria and sub-criteria.
Identifikasi Pemborosan Dengan Pendekatan Lean Warehouse Pada Gudang Oli di PT ABC Ardysti, Amelia Ramadhani; Ernawati, Dira
BRILIANT: Jurnal Riset dan Konseptual Vol 10 No 3 (2025): Volume 10 Nomor 3, Agustus 2025
Publisher : Universitas Nahdlatul Ulama Blitar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.28926/briliant.v10i3.1915

Abstract

Warehouses have an important role because they influence operational activities in a company's business processes. PT. ABC is one of Pertamina's official distributors which is engaged in logistics and distribution activities for oil, fuel, and heating products. In carrying out its operational activities, PT. ABC is still faced with various problems. The occurrence of delivery delays due to waiting times that are too long is the main problem at PT. ABC. Therefore, this research aims to identify waste and provide recommendations for improvements to warehousing activities. The lean warehouse approach is used to identify and eliminate waste through value stream mapping and process activity mapping tools. The research results were obtained through predictions of the proposed improvement recommendations, where it can be seen that the highest type of waste is waiting. After the proposed improvements, warehousing activity time decreased from 526 minutes to 355 minutes. In addition, the overall efficiency of warehousing activities increased by 22.14%, from the previous 47.72% to 69.86%.
Penilaian Sustainable Supply Chain Management Dengan Metode Life Cycle Assessment (Studi Kasus: Produk Tepung Bumbu, PT XYZ) Moch. Annas Hidayatulloh; Ernawati, Dira; Dewi, Sinta
BRILIANT: Jurnal Riset dan Konseptual Vol 10 No 2 (2025): Volume 10 Nomor 2, Mei 2025
Publisher : Universitas Nahdlatul Ulama Blitar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.28926/briliant.v10i2.2159

Abstract

Industrialization in Indonesia contributes significantly to increased emissions. PT XYZ as a seasoning producer faces challenges in managing the environmental impact of its supply chain activities, especially in seasoning flour products which have the highest productivity reaching 25,793 tons in 2023. This study aims to measure the level of emissions generated during the supply chain process of seasoning flour products using the Life Cycle Assessment (LCA) method with a gate to gate approach. Data collection was carried out through interviews and secondary data collection from company documents related to process procedures, energy consumption, raw material usage, and supply chain operational data. Data was processed using SimaPro 9.0 software with the ReCiPe 2016 Midpoint method. The results showed a high level of emissions. The terrestrial acidification category reached 4.97 kg.SO₂, far above the standard limit of 600 mg.SO₂ per year. Normalization results identified the production stage as the largest contributor with three categories of marine ecotoxicity (27.3), freshwater ecotoxicity (17.5), and human carcinogenic toxicity (13.5). The high emissions are caused by significant electricity consumption for operational systems and production machinery, as well as transportation use. Recommendations for improvement include optimizing production energy, managing machine operating time, utilizing solar panels, and others.
Reducing Waste in the Delivery System through Lean Distribution: Implications for Social Commerce Logistics Agustin, Melinda Dwi; Ernawati, Dira
Journal of Social Commerce Vol. 5 No. 2 (2025): Journal of Social Commerce
Publisher : Celebes Scholar pg

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56209/jommerce.v5i2.156

Abstract

This paper explores structural inefficiencies that have been engrained into the delivery procedures, a distributor of industrial gas products, in the context of wastage reduction and improvement on logistic responsiveness, by means of adopting lean distribution. An initial inspection identified extended lead time and operational delays based on delays based on waiting and transport inefficiencies as well as redundant motion, which signified a tangled and non-integrated workflow that was document dependant. Combining Process Activity Mapping (PAM), root cause analysis and 5W+1H technique, the work produced vital, non-value-added activities and recommended focused interventions to reinstate process flow and timing purity. The endeavours of the implementation of the lean-based redesign served to cut down the total time of lead by 14.6 per cent largely through removing the actual bottlenecks in the procedure and also making coordinated handovers on a digital platform. In addition to enhancing efficient stages, the research illustrates that lean distribution serves as a form of structural redesign, which shifts the delivery process out of the series of sequential activities to an integrated, real-time, and demand-oriented system. Such findings validate the view that to enhance the logistics performance in this kind of time-sensitive environment, a reduction of waste is not a sufficient condition but rather a planned transition to digitally-assisted, flow-based process configurations.
Material Requirement Planning of Choco Roll Product with Least Total Cost (LTC) and Least Unit Cost (LUC) Method at PT. XYZ Marbun, Chandra Ericson; Ernawati, Dira
IJIEM - Indonesian Journal of Industrial Engineering and Management Vol 5, No 1: February 2024
Publisher : Program Pascasarjana Magister Teknik Industri Universitas Mercu Buana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22441/ijiem.v5i1.22320

Abstract

PT. XYZ  is one of corporate company engaged in the snack industry. One of  PT. XYZ fast moving product is Choco Roll. Choco Roll product have many forming raw material. There is around 20 raw material and packaging material to make 1 box of Choco Roll. Problem that aries at PT. XYZ is in the the supply of raw materials related to the scheduling of ordering raw materials. The company wants to store enough raw material inventory to be able to immediately fulfill all production processes, but this method is not effective and efficient because it will increase storage costs, expiration may occur, and there is a risk of price drops at any time. When a company wants to try to reduce costs by decrease the level of inventory of raw materials on hand, namely the inventory of raw materials that are already in the warehouse, but this condition will disrupt the production process if there are frequent shortages or stockouts of raw materials. Therefore to reduce the inventory cost, it needs to be make best planning in determining the number of ordered of raw material. The company must use a more scheduled raw requirements planning method to obtain a more optimal inventory cost. The purpose of this study is to determine the exact number quantity and order frequency to reduce inventory cost. This research uses lotting technique Least Total Cost (LTC) and Least Unit Cost (LUC) base on Material Requirement Planning (MRP) method. Based on the result of the Choco Roll demand from June 2022 to May 2023 obtained the total inventory cost of IDR 67,683.53 decrease by 25% to company real planning.
Optimalisasi Pengendalian Persediaan Bahan Baku Mie Menggunakan Metode Min-Max Stock untuk Meminimumkan Biaya Persediaan pada PT Dapur Boga Lestari Rahmadhani, Talitha Vania; Ernawati, Dira
Ekonomis: Journal of Economics and Business Vol 8, No 1 (2024): Maret
Publisher : Universitas Batanghari Jambi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33087/ekonomis.v8i1.1277

Abstract

PT Dapur Boga Lestari is a company that produces noodles and is located in Sidoarjo, East Java Province. Flour and eggs are the primary ingredients in the noodles themselves. In meeting its requirements, the business frequently faces numerous obstacles. PT Dapur Boga Lestari lacks a distinct company-wide method for controlling these basic materials. Despite the fact that the company must control the inventory of raw materials for flour and eggs in order to prevent shortages and excesses of raw materials, which incur additional costs for the company, The results of the calculations indicate that the min-max stock method yields a lower total cost than the company method. In each period, the min-max stock method results in a 19% cost reduction for flour raw materials. In terms of egg primary materials, the company saved 29% from April 2023 to February 2024 and 25% from March 2024 to January 2025. This research provides information that assists businesses in identifying investments that will not benefit their production processes.
Pengukuran waktu baku dan analisis beban kerja pada Produk Insulation Pillows di PT XYZ Perdiansyah, Muhammad Ilham; Ernawati, Dira
Jurnal Teknik Industri Terintegrasi (JUTIN) Vol. 8 No. 1 (2025): January
Publisher : LPPM Universitas Pahlawan Tuanku Tambusai

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/jutin.v8i1.38901

Abstract

PT XYZ, is a construction and steel fabrication company that has contributed to various national and international projects. One of its products is insulation pillows, used in a wide range of industrial applications. The study aims to measure standard time and analyze workload in the production process of insulation pillows at PT XYZ. Standard time measurement was conducted using the Stopwatch Time Study method for five main production stages: Marking Cutting, bending, fit-up, assembling, and packing. The results indicate that the standard times for each process are as follows: Marking Cutting (35.46 minutes/unit), bending (19.26 minutes/unit), fit-up (110.50 minutes/unit), assembling (168.26 minutes/unit), and packing (117.83 minutes/unit). Workload analysis revealed that the assembling process has an excessive workload of 175%, necessitating the addition of one worker to achieve optimal workload distribution. These findings provide recommendations for workforce optimization in the production process to enhance efficiency and meet production targets
Upaya mengurangi repair pada hasil pengelasan di Welding School PT XYZ menggunakan metode Fishbone Diagram dan 5W+1H Satya , Mas Tangguh Afritza; Ernawati, Dira
Jurnal Teknik Industri Terintegrasi (JUTIN) Vol. 8 No. 1 (2025): January
Publisher : LPPM Universitas Pahlawan Tuanku Tambusai

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/jutin.v8i1.39430

Abstract

PT XYZ is an oil field service provider company that has succeeded in achieving high welding quality standards in accordance with international requirements. One of the programs at PT XYZ to improve welding quality is the Welding School. The main goal of welding school is to produce welders who are competent and able to produce quality welds. However, when inspecting the welding results, porosity defects were still found so repairs had to be carried out. The aim of this research is to identify the causes of porosity defect factors using the Fishbone Diagram method. The research results explain that porosity defects in welding results are caused by five factors, namely human factors, machine factors, method factors, material factors and environmental factors. Next, recommendations for improvements using the 5W+1H method are given so that they can be used at the PT XYZ welding school as a reference for reducing repairs on welding results.
Co-Authors Adhella Ika Putri Aditya Tri Pratama agung setiawan Agustin, Melinda Dwi Akbar Sujiwa Amel, Amelia Purbaningtyas Ardysti, Amelia Ramadhani Arifano, Krisna Ramadhian Az Zahra, Ladya Cheril Dyah Suci Perwitasari, Dyah Suci Fatmawati, Erliansa Fitriyah, Jihan Hayati, Kinanti Resmi Kuswara, Ramadana Esa Maghfiroh, Marjiatul Marbun, Chandra Ericson Maulana, Alfin Bima Maunah, Dewi Aisarunnisa' Mera, Dewi Seda Moch. Annas Hidayatulloh Mohammad Ridho Permana Nabilla Nabilla Ni Ketut Sari Nugraha , Isna Nugraha, Isna Nur Aini Fauziyah Nur Rahmawati Nuswantoro, Wira Yudha Perdiansyah, Muhammad Ilham Pradata, Amelia Putri Pradinain, Rizky Fadilla prakosa, albertus Adriyanto Rahmadhani, Talitha Vania Riska Dewi, Nanda Rizka Novitasari Sa'idan, Gading Adian Kun Safirin, Moch. Tutuk Sakiyatuddurriyah, Sakiyatuddurriyah Santika, Arum Sinda Sari, Komang Nickita Satya , Mas Tangguh Afritza Setiyadi, Nanda sholeha, fitriatus Sholihin, Farhan Aufa Sidabutar, Naomi Sinta Dewi Sudrajat, Oka Akbar Tauriza Alfiane, Revica