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Sirait, Ganda
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ANALISIS PENERAPAN 5S PROSES PRODUKSI PADA UKM KERUPUK LATANSA Wulandari Ramadhani, Ringgie; Sirait, Ganda
Computer Science and Industrial Engineering Vol 12 No 4 (2025): Comasie Vol 12 No 4
Publisher : LPPM Universitas Putera Batam

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33884/comasiejournal.v12i4.9874

Abstract

UKM Kerupuk Latansa in Batam faces various challenges in its production process, including disorganized tool and material placement, a suboptimal working environment, and inefficient production time. These issues potentially lower productivity and product quality. This study applies the 5S method (Seiri, Seiton, Seiso, Seiketsu, and Shitsuke) to improve production efficiency and workplace organization. A quantitative approach was used, collecting data through direct observations, interviews, and work time measurements. The results show that after implementing 5S, the average cycle time decreased from 15.37 seconds to 13.82 seconds, and production output increased from 2,250 to 2,500 packs per month. In the Seiri stage, unnecessary items were removed from the workspace to create a cleaner and more comfortable working environment. Seiton was implemented by organizing production tools, such as impulse sealers, for easier access. Seiso involved routine cleaning of the workspace and equipment to prevent packaging defects. Seiketsu ensured standardized procedures for workplace cleanliness and organization. Finally, Shitsuke established a culture of discipline in maintaining cleanliness and order, with regular evaluations to sustain the 5S implementation. With a cleaner and more organized environment, employee comfort and productivity significantly improved.
ANALISIS PEMILIHAN SUPPLIER SPAREPART MOTOR PADA BENGKEL CV. AGUS MOTOR BATAM Sirait, Ripaldo; Sirait, Ganda
Computer Science and Industrial Engineering Vol 12 No 4 (2025): Comasie Vol 12 No 4
Publisher : LPPM Universitas Putera Batam

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33884/comasiejournal.v12i4.9881

Abstract

Suppliers play an important role in providing quality products and in ensuring the availability of goods needed by the company. Supplier selection is a critical activity because the supplier will supply the company's raw materials in the long term so that it has a significant impact on the company's productivity. CV. Agus Motor is a motorcycle repair shop. The problems that often occur in CV. Agus Motor repair shops are delivery time, inconsistent quality, spare part prices, and warranties. This study aims to determine the right supplier of manual or automatic motorcycle chains at CV. Agus Motor. The methods used in this study are Analytical Hierarchy Process (AHP) and Topsis. From this study, the results obtained The most optimal supplier based on the calculation of the AHP method which is the first priority is the Cahaya Motor Batam supplier with a weight value of 0.603 and a percentage of 60.30%, the Surya Mega Teknik supplier is the second priority with a weight value of 0.232 and a percentage of 23.2%, and the Sarana Motor supplier is the third priority with a weight value of 0.164 and a percentage of 16.4%. And with the TOPSIS method, the first priority is Supplier Cahaya Motor Batam is a superior alternative with a value of 1,000, Supplier Surya Mega Teknik is the second priority with a value of 0.092, and Supplier Sarana Motor as the third priority with a value of 0.089. Therefore, the first alternative is selected, namely Cahaya Motor Batam to become a supplier for CV. Agus Motor.
PENINGKATAN KUALITAS PRODUK PADA PROSES ASSEMBLY Sirait, Ganda; Banjarnahor, Haposan; Simanjuntak, Jontro
JURSIMA Vol 12 No 3 (2025): Volume 12 Nomor 3 2025
Publisher : INSTITUT TEKNOLOGI DAN BISNIS INDOBARU NASIONAL

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47024/js.v12i3.1198

Abstract

Abstrak Penelitian ini bertujuan untuk mengindentifikasi akar masalah dan penerapan meningkatkan kualitas produk CG200 dengan fokus pada proses perakitan. Data awal yang diperoleh dari bagian pengendali kualitas ditemukan bahwa beberapa reject produk seperti kesalahan penyambungan kabel, pemasangan baut tidak sesuai torsi dan ketidaksesuaian posisi komponen terjadi di bagian assembly. Metode yang digunakan dalam penelitian ini meliputi pengamatan, wawancara, dan melakukan analisis pendekatan PDCA (Plan, Do, Check, Act). Hasil dari penelitian ini menyampaikan bahwa setelah dilakukan perbaikan prosedur dan pelatiahn teknis, berhasil melakukan pengurangan jumlah cacat sebesar 21,5% dalam waktu 3 bulan. Dengan demikian, perbaikan system perakitan dapat meningkatkan kualitas dan efisiensi produksi pada produk tersebut. Kata kunci: Pengendalian Kualitas, Process Assembly, Cacat Produksi, PDCA.
ANALISIS MANAJEMEN PERSEDIAAN BAHAN PADA UKM MAKANAN KALENG Sumantika, Arsyad; Sirait, Ganda
JIM UPB (Jurnal Ilmiah Manajemen Universitas Putera Batam) Vol 12 No 1 (2024): Volume 12 Nomor 1 2024
Publisher : Universitas Putera Batam

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33884/jimupb.v12i1.8194

Abstract

Material inventory is a fundamental aspect of the company. The smoothness of the production process is not only based on the level of effectiveness in the production process, but also on other processes related to material inventory. If materials are in short supply, the production process will experience disruption which results in financial and non-financial losses. If there is too much material inventory, then the material storage costs borne by the company will be greater. The aim of this research is to maximize material supplies and determine the right time to reorder raw materials. The methods used are EOQ, ROP, and ITO. Data collection was carried out quantitatively at a fish canned food company. Based on the calculation results, it was found that the economic level of purchasing main raw materials using the EOQ method approach was 25 kg per order and the recommended reorder amount was 10 kg per order, while for safety sticks the recommended amount was 4.4 kg/day.
ANALISIS PENGENDALIAN KUALITAS PRODUK PIVOT PLATE PADA PROSES ASSEMBLY DI PT SIMATELEX MANUFAKTUR BATAM Ritonga, Bintang; Sirait, Ganda
Computer Science and Industrial Engineering Vol 13 No 1 (2025): Comasie Vol 13 No 1
Publisher : LPPM Universitas Putera Batam

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33884/comasiejournal.v13i1.10284

Abstract

PT Simatelex Manufacturing, located in Batamindo Industrial Park, Batam, specializes in producing household appliances, beauty tools, and robotics. Among the key components they assemble is the pivot plate, which which works as a filter, opener, pod wrapper, and hot water channel. The issue explored in this research is the defect rate of pivot plates, which often surpasses the company’s acceptable limit of 1%. The goal of this study is to assess the pivot plate’s quality, uncover the root causes of defects, and offer solutions to minimize them. To do this, researchers used the Failure Mode and Effect Analysis (FMEA) method, along with supporting tools such as the 5W+1H approach, P charts, and a fishbone diagram. The analysis revealed several main causes: overheating machines (RPN 288), workers rushing during tasks (RPN 192), product build-up (RPN 150), inefficient workstation layout (RPN 180), and fragile materials (RPN 144). To reduce these issues, the study suggests routine machine maintenance, clear work instructions, improved layout planning, and material inspections every two hours by QC. These strategies aim to lower the defect rate and enhance the overall quality of the pivot plate, contributing to better production performance.
PERANCANGAN ALAT BANTU ANGKAT JUMBO BAG PROSES MIXING PADA PT XYZ BATAM Raja Doly Sirait; Sirait, Ganda
Computer Science and Industrial Engineering Vol 13 No 2 (2025): Comasie Vol 13 No 2
Publisher : LPPM Universitas Putera Batam

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33884/comasiejournal.v13i2.10330

Abstract

Labor is one of the most important assets for a company. However, human resources are not free from work-related issues. Ensuring comfort and safety at work can foster enthusiasm among employees. At PT XYZ BATAM, employees in the mixing department who manually and repeatedly pour materials have reported physical complaints. The aim of this study is to minimize the risk of musculoskeletal disorders (MSDs), identify the complaints experienced by workers, and design an ergonomic jumbo bag lifting aid to help improve poor working posture and enhance comfort. This research uses the Rapid Entire Body Assessment (REBA) method to analyze working posture and the Nordic Body Map (NBM) questionnaire to identify physical complaints. The Need, Idea, Decision, Action (NIDA) method is used to gather information needed by workers to reduce workplace issues and to develop new lifting aid designs based on previous tools. The results of the NBM questionnaire serve as the basis for the design process. The study found that workers experienced musculoskeletal complaints in the neck, back, waist, left thigh, right thigh, left knee, and right knee, with a moderate risk category. The most dominant complaint percentage reached 66.66%. As a solution, a jumbo bag lifting aid was designed with specifications of 100 cm in length, 100 cm in width, 120 cm in height, and a volume capacity of up to 1000 kg. This solution provides improved working comfort for employees.
ANALISIS TOTAL PRODUCTIVE MAINTENANCE (TPM) PADA MESIN EKSTRUDER DI PT VOLEX BATAM Zulhamdi, Tommy; Sirait, Ganda
Computer Science and Industrial Engineering Vol 13 No 3 (2025): Comasie Vol 13 No 3
Publisher : LPPM Universitas Putera Batam

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33884/comasiejournal.v13i3.10486

Abstract

At PT Volex Batam, the ekstruder machine is an integral part of the cable production process, used for the extrusion of cable insulation and protective layers. This machine plays a vital role in production; however, during the period of September 2024 to February 2025, a total downtime of approximately 194.4 hours was recorded, which disrupted production and caused delivery delays. This study aims to measure the effectiveness level of the ekstruder machine using the Overall Equipment Effectiveness (OEE) indicator and to identify the factors contributing to the high frequency of machine failures. The methods used in this research are OEE calculation and Six Big Losses analysis. The results show an average OEE value of 73%, which is below the ideal standard of ≥85%. The OEE components include availability at 88%, performance rate at 91%, and quality rate at 90%. The major losses come from equipment failure losses (9.6%), defect losses (8.8%), and idling & minor stoppages (5.1%). Based on the fishbone analysis, four main causes were identified: operator skills, inconsistent SOPs, worn-out machine components, and unstable environmental conditions. The proposed improvements focus on operator training, the implementation of preventive maintenance, and improvement of the working environment.
Co-Authors Ade Gunawan Alqodri, M. Rido ALUMAN MANURUNG, KEVIN anto, juni Firmansyah, Ikhsan Gea, Wirafransiskus Gulo, Darianus Haposan Banjarnahor Harahap, Ummi Kalsum Hindarwan, Rizky Hutapea, Bitson Nerpandi Ilham Kurniawan Jontro Simanjuntak, Jontro Lumban Tungkup, Fairizal Meyfiana, Della Miranda, Canda Muhammad Ilham Muhammad Zulkarnain Noerrohman, Dendi Oktavia, Yunisa Pakpahan, Sopian Pandiangan, Holipman Pangaribuan, Hotma Prasetyo, Bahariandi Aji Raja Doly Sirait riko, suhen suhen Ritonga, Bintang Santi Siahaan SAPRISUL Saputro, Joko Siahaan, Bobby Bernard Siburian, Marben Simanjuntak, Fery Simatupang, Ricky Perdana Sirait, Ripaldo Sisnandar, Mochamad Triadi Sitindaon, Putra Januara Sitohang, Sunarsan Sumantika, Arsyad Tambunan, Yopi Partomuan Tarigan, Elsya P.L. valen, Kevin siambaton Warman, Ricky Wawan Irawan, Wawan Wulandari Ramadhani, Ringgie Zamri Zulhamdi, Tommy