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Analisis Pemborosan Menggunakan Waste Assessment Model (WAM) pada Proses Penyediaan Unit pada Distributor Perdagangan
Get PDFThe distribution company for agricultural, construction, and infrastructure equipment is experiencing delays in the supply of units, which can lead to resource depletion and potentially cause customer loss. Supply delays represent a form of waste that must be eliminated. This study aims to identify the causes of the delays using the waste assessment model approach. Data was collected through questionnaires and interviews conducted with assembly supervisors and team leaders. Data processing utilized the waste assessment model, which consists of the waste relationship matrix (WRM) and the waste assessment questionnaire (WAQ). The WRM results indicated a strong correlation between defects, processes, overproduction, and inventory, while the WAQ results showed the largest waste occurred in inventory, motion, and waiting. The highest waste in this study was identified as defects, inventory, and motion. The results of this research are expected to provide effective recommendations to reduce supply delays and improve the company\u27s operational efficiency. Consequently, the company can maintain and even enhance customer satisfaction, as well as optimize the distribution process of agricultural, construction, and infrastructure equipment.
Keywords: Distributor, Supply Delays, Waste, WA
Optimasi Logistic Cost dari Perusahaan Crossdock Menggunakan Pendekatan Linear Programming dengan Permintaan Stokastik
Get PDFEfficiency within a company must be enhanced to maintain competitiveness and business sustainability, particularly in logistics firms. In logistics processes, minimizing costs is a critical indicator of operational efficiency. This study applies optimization through linear programming to a cross-dock company characterized by fluctuating demand, focusing on a fast-moving product. The analysis begins by calculating the minimum and maximum demand based on twice the standard deviation from the mean, followed by determining the optimal scenarios for each depot. The results indicate that, for the eight depots, the majority of the truck selection involved using single-axle trucks. Consequently, the total cost from the first to the seventh week was Rp. 1,785,000,000, while the LP simulation results indicated a total cost of Rp. 1,214,000,000, representing a potential cost saving of Rp. 554,000,000.
Keywords: Cross-Dock, Linear Programming, Logistic Cost, Optimizatio
Analisis Pengendalian Persediaan Produk Darah Menggunakan Metode Continuous Review System (Sistem-Q)
Get PDFBlood is a vital necessity because in the event of a shortage, patients can only obtain blood from fellow humans. Blood available at the Blood Donor Unit, such as packed red cells (PRC) is most often needed for medical treatment, but is also often limited. This is due to the fluctuating supply and demand of blood. Based on the problem, a stochastic model with the continuous review system (CRS) or Q-system method is used. The approach will monitor inventory levels continuously, triggering reordering (r), when the stock reaches a certain threshold. This research applies a stochastic model to forecast demand (q), safety stock (ss), reorder point (r), maximum inventory (S), and total inventory cost (Ot). Before the calculation is done, the demand forecasting method is used, then the calculation with the Q-System. Based on data processing, obtained for each blood type A, B, AB, and O, namely, q values of 47, 48, 40, and 20 blood bags. The value of r is 73, 73, 71, and 17 blood bags. This study applies a stochastic model to estimate demand (q), safety stock (ss), reorder point (r), and maximum inventory (S) 259, 56, 42, 21. And the total inventory cost (Ot) IDR 212,429,215, IDR 238,485,254, IDR 157,422,496, and IDR 59,592,451.
Keywords: Blood, Inventory, Demand, Q-Syste
Implementasi Metode Six Sigma dalam Pengendalian Kualitas Refined Bleached Deodorized Palm Oil di PT. ZZ: .
Get PDFPT. ZZ is a company engaged in the processing of crude palm oil, often called Crude Palm Oil (CPO) and its derivatives. The production process in this company has two steps, namely the Refinery Plant and the Fractionation Plant. In the production process at the Refinery Plant, there is often a quality of Refined Bleached Deodorized Palm Oil (RBDPO) that does not comply with the qualifications determined by the company. The number of defective products will have an impact on the time and cost of production, which will increase. This study aims to determine and identify the causes of defective products in the production process using the six sigma method with the DMAIC approach so that it can be a proposal for improvement in the future. The results of this research are that the average sigma value obtained from January 2024 to April 2024 is 5.25, and the average DPMO value from January 2024 to April 2024 is 92.5. The sigma value shows a number that is close to the desired sigma target, namely 6, and based on Pareto diagram analysis, shows that the dominant defect is Free Fatty Acid (FFA).
Keywords: CPO, DMAIC, Fractination Plant, RBDPO, Refinery Plant, Six Sigma
Rancang Bangun Alat Penumbuk Adonan Guna Meningkatkan Efisiensi Produksi Dan Higienis Pada Produk Biskuit Dengan Pendekatan Ergonomi Dan Kelayakan Investasi
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UMKM Banjar Biscuit "Bu Min" in Sumber Nongko Village, Jombang Regency produces traditional snacks made from sticky rice using manual methods, especially at the dough-pounding stage. This manual process causes physical fatigue in workers, affects production efficiency, and threatens product hygiene. With increasing market demand, UMKM faces major challenges in meeting consumer needs. To overcome this problem, an ergonomic dough-pounding tool was designed with dimensions of 140 cm high, 50 cm wide, 50 cm long, and a mortar diameter of 30 cm. This tool successfully reduced the Work Heart Rate (WHR) of workers from 118-149 to 93-124 beats/minute, indicating a significant reduction in cardiovascular load. In addition to increasing production efficiency, this tool maintains product hygiene and reduces the risk of worker injury. From a financial perspective, the cost of making the tool of Rp 5,306,000 has proven to be economical with an IRR of 5.26% per month (51.2% per year), a Profitability Index of 6.04, a positive NPV, and a Payback Period of only 2 months. This innovation helps MSMEs improve the quality and quantity of production while strengthening competitiveness in a competitive market.
Keywords: Anthropometry, Cardiovascular Load, Engineering Economic
Implementasi Pendekatan Activity Relationship Chart dalam Perancangan Tata Letak Gudang Baru untuk Memperpendek Perpindahan Material di UD. M
Get PDFThis research discusses the issues faced by UD M, which produces crispy brownie chips, where the finished goods warehouse often becomes overcrowded due to production reaching 253 boxes, while the warehouse capacity is only 48 boxes. Due to other factors as well, the owner decided to move all activities, starting from raw material storage, production, and finished goods storage, to another location. The problem is the absence of a layout for the new warehouse. With this issue, the author designed the factory layout based on the Shared Storage method, considering material handling and the FIFO picking system. This research aims to provide the owner of UD M with considerations for arranging the facility layout in the new building. In addition to changing the layout of the finished goods warehouse, the owner plans to relocate the factory. The author reorganized the new factory of UD. M based on the results of the Activity Relationship Chart.(ARC). The research results show that the raw material warehouse, which initially measured 11.30 m², has been reduced to 10.32 m². Then, the finished goods warehouse, which initially could only hold 48 boxes, can now hold up to 123 boxes per day. By changing the layout of the production area, the production flow also becomes more organized and systematic.
Keywords: ARC, FIFO, Production Flow, Share Storage, Warehous
Analisis Efektivitas Mesin Disch Caller Menggunakan Total Productivate Maintenance (TPM) Studi Kasus : PT. PM
Get PDFThis research aims to analyze the effectiveness of the Disch Caller machine at PT. PM by applying the Total Productive Maintenance (TPM) method. The method includes calculating the Overall Equipment Effectiveness (OEE) to measure machine performance and analyzing the Six Big Losses to identify productivity losses. The results show that the average OEE value of the Disch Caller machine is 69.15%, which is below the international standard of 85%. The analysis of Six Big Losses identified major losses, including reduce speed losses and equipment failure losses. These losses are caused by insufficient preventive maintenance, substandard material quality, and suboptimal working environment conditions. The proposed improvements include implementing a more disciplined preventive maintenance schedule, controlling material quality, and improving the working environment. Additionally, providing operator training and enhancing coordination between the maintenance team and operators are recommended to support machine effectiveness. Implementing these strategies is expected to increase the OEE value, reduce downtime, and enhance the production process at PT. PM.
Keywords: Disch Caller, Overall Equipment Effectiveness, Productive Maintenance, Six Big Losses.
Analisis Pengendalian Kualitas Hasil Pengelasan Bengkel Welding HO & AO di PT. A Menggunakan Metode Six Sigma dan New Seven Tools
Get PDFPT A is a state-owned maritime manufacturing company that produces ships. There are a number of workshops that support the production process, one of which is the HO & AO Welding Workshop. The problems that occur in the HO & AO Welding Workshop are 3 types of defects that are often found in Welding results in the form of Spatter, Undercut, and Pin hole. This study aims to improve quality and propose improvements that can be made to reduce defects in the HO & AO Welding workshop at PT. A. Therefore, it is necessary to carry out quality control with the Six Sigma method and New Seven Tools. Based on the results of the study, it is known that the DMAIC (Define, Measure, Analyze, Improve, Control) analysis with the results obtained through testing the quality of Welding products resulted in 548 failure units, a DPMO value of 49289 and then converted to a sigma level of 3.15 which indicates that the sigma level is at the average of the Indonesian industry. It can be explained that the possibility of damage is 49289 for a million production. And the main defect-causing factors have been successfully identified through the application of New Seven Tools which include human, material, method, machine, and environmental factors. Therefore, PT. A is advised to implement improvement recommendations to reduce product defects.
Keywords: Defect, New Seven Tools, Quality, Six Sigma, Weldin
Pengukuran Ergonomi Sikap Kerja Pengrajin Sulam Lampung dengan Metode RULA & REBA dan Rekomendasi Perbaikan
Get PDFThe ergonomic assessment of the working posture of traditional embroidery artisans in Lampung is necessary to uncover their working conditions and their impact on health, with the main complaint being significant musculoskeletal disorders. This study aims to identify the ergonomic risk levels of the artisans and provide recommendations for corrective measures. The research utilized the Nordic Body Map questionnaire to identify the body areas with the highest complaints, while ergonomic analysis was conducted using the Rapid Upper Limb Assessment (RULA) and Rapid Entire Body Assessment (REBA) methods. The findings revealed that the back (100%), buttocks (80%), lower neck (80%), right shoulder (80%), waist (70%), and upper neck (70%) were the areas with the highest complaints. The RULA score was 6 for embroidery and pattern-making activities, indicating that corrective actions are needed in the near future. The REBA scores were 5 for embroidery and 6 for pattern-making, emphasizing the urgency for improvement. Immediate corrective actions, such as the provision or replacement of ergonomic embroidery frames or tables, are required to reduce injury risks and enhance the occupational health of the artisans.
Keywords: Artisans, Ergonomic, Nordic Body Map, REBA, RUL
KECERNAAN KALSIUM DAN FOSFOR TERNAK BABI YANG MENDAPAT PENAMBAHAN TEPUNG DAUN KATUK DAN TEPUNG KUNYIT: Digestion of Calcium and Phosphor in Pig That Receives Addition of Sweet Leaf Flour and Turmeric Flour
Get PDFPenelitian bertujuan untuk mengetahui pengaruh penambahan tepung daun katuk (Sauropus androgynus L. Merr) dan tepung kunyit (Curcuma domestica) dalam ransum dalam kecernaan kalsium dan fosfor pada babi starter. 12 ekor ternak babi yang digunakan dalam penelitian ini berumur 1-2 bulan dengan kisaran bobot badab 6--10,25 kg (KV= 19,61%). Rancangan Acak Kelompok yang di gunakan dengan 4 perlakuan dan 3 ulangan. Perlakuan terdiri dari R0: Ransum basal tanpa penambahan tepung daun katuk dan tepung kunyit, R1: Ransum basal + 4% tepung daun katuk, R2: Ransum basal + 1% tepung kunyit, R3: Ransum basal + 4% tepung daun katuk + 1% tepung kunyit. Hasil analisis ragam menunjukkan bahwa penambahan tepung daun katuk, tepung kunyit dan kombinasi keduanya dalam ransum tidak memberi dampak nyata (P>0,05) dalam kecernaan kalsium dan fosfor. Jadi dapat disimpulkan penambahan tepung daun katuk (Sauropus androgynus L. Merr), tepung kunyit (Curcuma domestica) dan campuran keduanya dalam ransum terhadap konsumsi kecernaan kalsium dan fosfor memberikan hasil yang retatif sama
Kata kunci: Babi, Fosfor, Kalsium, Tepung daun katuk, Tepung kunyi