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Quality control is crucial for the company to minimize the existence of defective products. The research focuses on the quality control section. The purpose of this study is to find out how the implementation of quality control occurs at PT Andalan Mandiri Busana, identify the factors that cause defects in garment products, and determine proposed improvements as an effort to suppress defective products. The results showed that there were factors that caused production defects and the biggest cause was broken stitches, and the sigma value obtained was 4.15, which means that the company has carried out pretty good quality control. Based on this research, the recommendations that can be given are in the improve stage, in the form of a table of proposed improvements using the Five M-checklist approach and Kaizen based on fishbone diagrams. The results of this study are expected to be one of the inputs for companies in implementing quality control and can increase the company's sigma level.

Nowadays, in health care facilities, whether in hospitals, health centres, or clinics, there is often a large number of patient visits that can cause delays in operational activities. Delays are caused by a lot of waste in patient flow activities in health facilities. Therefore, the application of Lean six sigma in improving patient flow is needed to overcome this. This research uses the Literature Review method where data collection and processing by referring to previously existing research in the last 5 years, namely 2019-2023. The literature was obtained through Google Scholar and journal databases using the keywords Lean Six Sigma, patient flow, and health service facilities. The number of journals used as a reference for previous related research in compiling this research is 6 journals. The results obtained from the six articles state that the application of lean six sigma in healthcare facilities has proven effective in improving patient flow. And this way is very effective of course to do.

Lean is a concept and technique for systems that optimizes patient benefit by decreasing waste and waiting time. The literature review approach is used in this study to acquire research data, with internet searches serving as a supplementary tool while looking for relevant papers. According to the study findings, mean hospital length of stay (LOS) fell by 24% throughout the intervention period in 259 patients with PMV (131 pre-intervention; 128 post-intervention) (29 vs. 22 days, p 0.001). This demonstrates that clinical redesign based on Lean Six Sigma decreases LOS in intensive care units. Other studies show that utilizing Lean Six Sigma has resulted in a 57% reduction in length of stay and an 88% reduction in the identification of non-value added tasks. Lean management in hospitals is a step toward greater service efficiency that has been shown to outperform Total Quality Management (TQM) and Plan, Do, Check, Action (PDCA) improvements. Customers and their families gain from shorter wait times, as do healthcare employees (medical, emergency, and non-medical) and hospital administration. The use of the lean six sigma approach in conjunction with the DMAIC cycle effects LOS reduction, indicating that lean six sigma can reduce LOS in hospitals.

CV Berkah Kecambah Tauge Aling is a company engaged in the field of food or vegetable bean sprouts made from green beans. In the production of CV Berkah Kecambah Tauge Aling there was a product defect in January 2023 which occurred, namely the result of the defect rate which was known to have the highest number of defects in the yellow color defect of 1818 packages, with a defect percentage of 58.3%. Then the Bad Smell defects with a total of 879 defects, a percentage of defects obtained by 28.2%, the type of defective packaging torn with a total of 423 defects, a percentage of defects of 13.6%. it is known that the diagram (p-chart) with the type of product defect still has 13 points exceeding the upper control limit or UCL and there are 12 points exceeding the lower control limit or LCL with a proportion of 0.148. Judging from the results of DPMO calculations and Sigma Levels, an average DPMO of 49619 is obtained, so that if there is a product defect of 49619 out of 1,000,000 opportunities in the Sprouts production process at CV. The Blessing of Aling Bean Sprouts. In the FMEA diagram to find out the factors and RPN values that result in product defects including human factors, machines, materials, methods, and the environment, the results of the FMEA analysis cause the biggest defects, namely yellowing defects with an RPN value of 810.

PT Kusuma Mulia Plasindo Infitex is a company engaged in the manufacturing sector that produces polypropylene and HD (Hight density Polyethylene) plastic products. The problem that occurred at PT Kusuma Mulia Plasindo Infitex was that the number of defective products on HD plastic products of 98,327 kg contained 4,194 kg of defective products. The purpose of this study is to determine the factors that cause defects and suggestions for improvements to minimize defective products. This study uses the six sigma method which is useful for finding the root causes of problems that are adjusted to the characteristics of the data they have. The 5 stages of six sigma are DMAIC(define, measure, analyze, improve, control) and kaizen is the Five M-Checklist. So from the results of data processing, the value is obtained in the form of DPMO 8393.048 and a sigma value of 2.49. Proposed improvements include providing training in plastic welding, providing additional 5-10 minute breaks and supervision while working. Perform routine machine maintenance every month and cleaning every day. Adding ventilation and blowers in the production room. Carry out the production process according to the existing SOP at the company, especially in mixing materials according to the SOP for raw materials that have been made by the company.

Penelitian ini bertujuan untuk melakukan upaya efisiensi pada proses pengemasan produk bandeng vacuum spesial di PT Bandeng Juwana menggunakan metode six sigma menggunakan indikator nilai sigma dan DPMO (defect per million opportunity). Penelitian ini menggunakan Ishikawa diagram, FMEA (failure mode & effect analysis), & AHP (analytical hierarchy process). Terdapat 7 jenis defect yang teridentifikasi yaitu defect loss vacuum, patah anatomi, kelunakan, size, daging rontok, dan over fat. Berdasarkan prinsip pareto defect loss vacuum dan patah anatomi dipilih untuk dilakukan improvement dengan jumlah defect 88,04% dari total defect. Berdasarkan hasil penilaian FMEA, RPN terbesar yaitu tidak ada standar jarak sealer RPN 42 dan SOP pengerjaan ikan lengket pada kertas alas RPN 90. Alternatif solusi yang dipilih menggunakan metode AHP yaitu membuat SOP pengerjaan ikan lengket pada kertas alas. Jika alternatif solusi diterapkan maka terdapat peningkatan nilai sigma dari 3,7 menjadi 3,82, dan penurunan nilai DPMO dari 13.588,96 menjadi 10.066,81.

The quality of hospital services will affect patient satisfaction and also their loyalty in using these facilities and the rapid development of health services currently requires hospital managers to run their business well. in the hospital. This study uses the method of literature review (literature review) with search engines used in literature searches including Google Scholar and Research gate with the keywords Service Quality Improvement, Lean Six Sigma, Hospitals. The resulting articles were selected based on publications published between 2018 and 2023. The results showed that the application of lean six sigma in hospitals in improving the quality of their services can be carried out through the DMAIC (Define, Measure, Analyze, Improve, Control) approach. The conclusions of this study indicate that the application of lean six sigma can reduce difficulties, increase speed, and separate activities that have added value or value added from activities that have no added value or non-value added in hospitals, such as improving service quality by setting priorities by according to the highest gap required by the patient.

PT. Kali Jaya Putra is a manufacturing company that focuses on the production of wood floors. One of the products produced is solid flooring. In a series of production processes, product defects are still found up to 7.5% of total production, defects that often occur such as cracks, pinholes, roughness, and also twists which certainly affect product quality. The research conducted aims to determine the percentage of defective products, the causes of defects and the resulting impacts or effects, and to provide recommendations for improvements to minimize the percentage of defects in solid flooring products at PT Kali Jaya Putra. The method used is Six Sigma and Failure Mode and Effect Analysis (FMEA). The results of this study are that the most dominating defects are crack (53.75%), followed by pinhole defects (36.77%), twist (8.62%), and roughness (0.85%). The causes of defects in products are caused by several factors such as humans, machines, methods, materials, and the environment. Based on FMEA, it is known that the cause of the defect with the highest RPN is 384, namely operator negligence in material sorting. As for recommendations for improvement that can be given, namely conducting training on the grading of raw materials in the hope of minimizing operator errors in sorting raw materials.