JURNAL REKAYASA SISTEM INDUSTRI

OPTIMALISASI KAPASITAS PRODUKSI AYAM PEDAGING MELALUI MASTER PRODUCTION SCHEDULE (MPS) DAN ROUGH CUT CAPACITY PLANNING (RCCP)

Muhammad Rizki Abdullah, Reiny Myrtanti, Ellysa Nursanti — Sat, 30 May 2026 00:00:00 +0000

Fluctuations in market demand for broiler chickens pose a challenge for broiler processing companies in balancing demand with production capacity. PT X often faces problems with actual capacity mismatch with production schedules, potentially causing delays or stock shortages. This study aims to optimize broiler production capacity at PT X through the implementation of Master Production Schedule (MPS) and Rough Cut Capacity Planning (RCCP). The research method used is a quantitative approach by collecting and analyzing data on production, demand, inventory, and safety stock levels. The MPS is prepared to determine the amount of production needed in a certain period based on projected demand and inventory conditions. Furthermore, RCCP is applied as an evaluation stage to assess the suitability of available production capacity with MPS needs. From the preparation of the MPS scheduled weekly, the results obtained were 221,944 kg / week, then from the analysis with RCCP through the Bill of Labor approach, it was found that several work centers showed a capacity shortage compared to MPS needs, especially at work center I which uses a drum chiller machine. The recommended improvement proposal is to add 1-2 hours of overtime per shift to close the production capacity gap. The research results show that the implementation of MPS can provide a more structured overview of the production schedule, while RCCP plays a crucial role in ensuring existing production capacity can meet demand needs. Thus, the combination of MPS and RCCP supports company decision-making and optimizes production capacity planning at PT X.

EFEKTIVITAS PENGERINGAN TEMBAKAU DENGAN METODE JANTUR (GANTUNG) DI DALAM GREEN HOUSE DIKOMBINASIKAN DENGAN PENAMBAHAN KALSIUM KARBIDA (CaC₂)

Sat, 30 May 2026 00:00:00 +0000

This study evaluates the drying efficiency of tobacco (Nicotiana tabacum L.) using the traditional hanging (jantur) method combined with calcium carbide (CaC₂) as an acetylene-generating accelerator. Motivated by common challenges in smallholder postharvest handling—long drying times, weather dependence, and uneven quality—we conducted an experimental trial comparing three treatments: control jantur without CaC₂, jantur with 100 g CaC₂ per chamber, and jantur with 200 g CaC₂ per chamber. Each treatment used randomized placement of 100 sticks, and monitoring included periodic moisture measurements, temperature and relative humidity logging, organoleptic grading, and economic cost analysis. Data collection occurred three times daily to capture drying dynamics and to construct drying curves for each treatment. Results show that all jantur treatments reduced drying time relative to conventional sun drying, achieving final moisture contents near industry targets within approximately 12 days. Average drying rates were close across treatments (≈5.65–5.79% per day), and ANOVA produced non-significant differences (F = 0.3009, p = 0.7421). However, grading outcomes favored the 200 g CaC₂ treatment, which yielded the highest proportion of Grade B leaves (90%) and no Grade C, while 100 g produced mixed results with reduced Grade D but higher Grade C share. Economic assessment indicates substantial cost savings per cycle for jantur treatments compared to sun drying, even after allocating greenhouse investment and CaC₂ costs. In conclusion, integrating CaC₂ into jantur drying offers practical benefits for smallholders by shortening drying cycles and improving grading consistency at modest additional input cost. Although statistical differences in drying rate were not significant, quality and economic indicators support trial adoption, particularly at the 200 g dosage. We recommend larger-scale trials, residue analysis, and safety assessments to validate these findings and ensure safe field application. Further outreach and farmer training on safe CaC₂ handling and ventilation practices should accompany extension of this technique to communities.

NON-STERILE M HANDSCOONS INVENTORY CONTROL USING MONTE CARLO SIMULATION: A CASE STUDY

St. Mega Dzulfahra Manguluang, Feri Afrinaldi — Sat, 30 May 2026 00:00:00 +0000

Non-sterile M Handscoons are medical gloves to protect healthcare professionals from transmitting disease through direct patient contact. The handscoons come in boxes at 100 gloves per box. Among all consumable items stocked by Hospital X, located in Padang, the handscoons consumed the highest inventory costs. This paper aims to determine a better inventory policy for the Non-sterile M Handscoons. Better order quantity and reorder point were determined. Since the demand for the handscoon was probabilistic, the Monte Carlo simulation was used to determine the order quantity and reorder point to maximize service level and reasonable total inventory costs. The algorithm used to execute the simulation was presented and implemented as a spreadsheet-based Monter Carlo simulation. Four scenarios were compared, combining different order quantities and reorder points, including the hospital's current inventory control policy. A procedure with the mean of service level and total cost as the criteria for selecting the best scenario was presented. The Anderson-Darling Goodness-of-Fit test and Least Squares parameter estimation method showed that the monthly demand follows Weibull distribution with an estimated shape parameter = 5.32 and scale parameter = 262.06. The monthly demand mean was 242 boxes. Accordingly, using the Central Limit Theorem, the annual demand was approximately normally distributed, with a mean of 2,899 boxes and a standard deviation of about 178 boxes. The simulation results indicated that an inventory policy with an order quantity of 216 boxes and an order interval of 27 days is the most effective. This policy achieved a mean service level of 99.9 percent with an annual inventory cost of Rp179.35 million. In addition, the selected policy was estimated to guarantee a minimum service level of 94.7 percent and achieved a 100 percent service level with approximately 92 percent certainty. Compared with the status quo, adopting this policy increased the service level by approximately 19 percent, accompanied by a proportional increase in annual inventory costs.

PENINGKATAN EFISIENSI DAN PRODUKTIVITAS OPERASIONAL PADA NELAYAN TRADISIONAL MELALUI PENGAPLIKASIAN KONSEP LEAN AND GREEN SUPPLY CHAIN MANAGEMENT

Citra Indah Asmarawati, Sadiq Ardo Wibowo — Sat, 30 May 2026 00:00:00 +0000

The traditional fisheries sector in Indonesia still faces various challenges in terms of operational efficiency and productivity, driving the need for innovative solutions to improve the performance of this sector. This study aims to analyze and improve the operational performance of traditional fishermen through the application of the Lean and Green Supply Chain Management (LGSCM) concept, using a mixed-method approach that combines quantitative and qualitative analysis. Data were collected through direct observation, in-depth interviews with 50 traditional fishermen, and measurement of operational parameters over a 6-month period. The results of the study identified significant waste in the traditional fisheries supply chain, including an average waiting time of 4.2 hours per trip, excess fuel consumption of up to 12 liters per trip, and a loss of 8.5 kg of catch per trip due to improper handling. The implementation of LGSCM which includes standardization of work processes, optimization of shipping routes, improvement of fish storage systems, and the use of appropriate technology has resulted in significant improvements. After the application of this concept, there was a reduction in waiting time to 2.3 hours per trip, a decrease in fuel consumption to 8.4 liters per trip, and an increase in marketable catch to 32.5 kg per trip. The conclusion of the study shows that the application of LGSCM has not only succeeded in increasing the efficiency and productivity of traditional fishermen's operations, but also contributed to reducing the environmental impact of fishing activities. This study recommends the need for ongoing training programs, increased infrastructure support, and the development of policies that support the adoption of LGSCM practices in the traditional fisheries sector to ensure the sustainability of its implementation and benefits in the long term.

ANALISIS KELAYAKAN USAHA PAVING BLOCK BERBAHAN SAMPAH PLASTIK MENGGUNAKAN BMC DAN PESTLE ANALYSIS

Rekha Rahmania Widiansah, Ansarullah Lawi, I Made Sondra Wijaya, Deni Lorenza — Sat, 30 May 2026 00:00:00 +0000

Plastic waste is a severe environmental issue in Batam City, where approximately 1,000 tons of waste are generated daily. With 20-30% being plastic and only 17% managed effectively, there is an urgent need for innovative waste reduction solutions. This study conducts a business feasibility analysis of transforming HDPE and LDPE plastic waste into environmentally friendly paving blocks. The research aims to evaluate this sustainable business opportunity utilizing the Business Model Canvas (BMC) to design internal strategies and PESTLE Analysis to assess external macro-environmental factors.The results of the BMC framework reveal a highly viable model targeting environmentally conscious communities, educational institutions, and cafés. The value proposition centers on offering affordable, durable, and eco-friendly construction materials. Key operations involve waste collection, processing, and strategic partnerships with local waste banks and government agencies. Revenue is primarily generated from product sales and collaborative sustainability projects. Concurrently, the PESTLE analysis highlights favorable political support and low economic production costs as significant strengths. Socially, community response is positive, though market awareness requires expansion. Technologically, the production utilizes easily accessible equipment. Legally, obtaining national certification (SNI) is essential for broader market penetration. Environmentally, the business significantly reduces plastic pollution. In conclusion, manufacturing plastic waste-based paving blocks is a highly feasible sustainable business that promotes a circular economy, creates economic value, and mitigates severe local environmental degradation.

EVALUASI POSTUR KERJA PADA AKTIVITAS PERBAIKAN DAN PENGELASAN RANGKA MOBIL MENGGUNAKAN RAPID ENTIRE BODY ASSESSMENT (REBA) DI PT. WY

Erniyani Erniyani, Irin Ramdhani, Raodah Raodah, Fahri Anwar, Achmad Romadin — Sat, 30 May 2026 00:00:00 +0000

Gangguan muskuloskeletal merupakan salah satu permasalahan kesehatan kerja yang umum terjadi pada sektor industri, khususnya pada pekerjaan yang melibatkan aktivitas fisik tinggi seperti pengelasan dan perbaikan rangka mobil. Permasalahan ini umumnya disebabkan oleh postur kerja yang tidak ergonomis, dilakukan secara berulang-ulang, serta minimnya penggunaan alat bantu kerja. Secara khusus, aktivitas perbaikan dan pengelasan rangka mobil di PT. WY masih dilakukan secara manual dengan posisi kerja tidak alami, seperti membungkuk, jongkok tanpa penopang, dan menjangkau area kerja yang sulit diakses, sehingga berpotensi meningkatkan risiko gangguan muskuloskeletal. Penelitian ini bertujuan untuk mengidentifikasi nilai tingkat risiko ergonomi pada aktivitas tersebut menggunakan metode Rapid Entire Body Assessment (REBA). Metode penelitian yang digunakan adalah pendekatan deskriptif kuantitatif dengan teknik pengumpulan data melalui observasi langsung, dokumentasi, serta analisis postur kerja pekerja. Subjek penelitian terdiri atas delapan pekerja yang dipilih secara purposive sampling berdasarkan intensitas kerja dan potensi risiko ergonomi. Hasil penelitian menunjukkan bahwa sebagian besar pekerja berada pada kategori risiko sedang dengan skor REBA antara 4 hingga 7, satu pekerja berada pada kategori risiko tinggi dengan skor 9, dan satu pekerja pada kategori risiko rendah dengan skor 3. Temuan ini menunjukkan bahwa masih diperlukan upaya perbaikan postur kerja untuk mengurangi risiko ergonomi serta meningkatkan keselamatan dan produktivitas kerja

MODEL EVALUASI KEBERLANJUTAN SUMBER DAYA NGO MELALUI INTEGRASI PROSES INTERNAL DAN STRATEGI PEMASARAN EKSTERNAL (STUDI PADA MARVIN FOUNDATION)

Sat, 30 May 2026 00:00:00 +0000

This study aims to develop and empirically test a resource sustainability evaluation model for non-profit organizations based on an industrial management system perspective by integrating internal process integration and external marketing strategy. The object of this study is the Marvin Foundation, with respondents consisting of donors, active volunteers, and organizational partners. The study employs an explanatory quantitative approach with a cross-sectional survey design and purposive sampling technique, involving 100 respondents. Data analysis was conducted using Partial Least Squares–Structural Equation Modeling (PLS-SEM) with the assistance of SmartPLS software. The results indicate that internal process integration has a positive and significant effect on resource sustainability, with a path coefficient of 0.420, while external marketing strategy also shows a positive and significant effect, with a coefficient of 0.360. The coefficient of determination (R²) of 0.580 suggests that the model has moderate to substantial explanatory power. Furthermore, the predictive relevance value (Q²) of 0.34 indicates that the model possesses good predictive capability. These findings highlight that resource sustainability in non-profit organizations is not solely determined by external factors but is strongly influenced by the integration of internal organizational processes. This study contributes to the development of a resource sustainability evaluation model based on an industrial management system approach and provides practical implications for improving organizational effectiveness and long-term sustainability.

ANALISIS KEANDALAN SISTEM DUMP DOOR MESIN BAGGING PHONSKA 5 MENGGUNAKAN PENDEKATAN RELIABILITY CENTERED MAINTENANCE

Abdul Aziz Rizal, Doni Yusri — Sat, 30 May 2026 00:00:00 +0000

The reliability of the Phonska 5 bagging machine is a crucial factor in ensuring smooth fertilizer packaging and minimizing production disruptions. The dump door system was identified as the largest contributor to failures (33%) in this unit. This study aims to analyze the reliability of the dump door system and determine appropriate maintenance strategies using the Reliability Centered Maintenance (RCM) approach. The analysis methods included system function identification, Failure Mode and Effect Analysis (FMEA), and evaluation of Mean Time Between Failure (MTBF) and Mean Time To Repair (MTTR) parameters. FMEA results showed that the sliding gate component had the highest Risk Priority Number (RPN) of 175, followed by the solenoid valve (120) and pneumatic piston (105). Reliability analysis indicated that the sliding gate had the highest MTBF of 6,243.71 hours, while the load cell had the shortest failure interval with an MTBF of 328.62 hours. The longest repair time was found in the solenoid valve with an MTTR of 20.93 hours, potentially causing significant downtime. The recommended maintenance strategy is Condition Directed Maintenance, implemented through an RCM Decision Worksheet, preventive maintenance checksheets, and One Point Lesson (OPL) to improve operational reliability

ANALISIS PERAWATAN MESIN DRYER MENGGUNAKAN METODE RELIABILITY CENTERED MAINTENANCE DAN OVERALL EQUIPMENT EFFECTIVENESS UNTUK PENINGKATAN KUALITAS CRUMB RUBBER DI PT XYZ

Sarah Rumapea, Olivia Rachmanita Saidi, Anita Christine Sembiring — Sat, 30 May 2026 00:00:00 +0000

PT XYZ is a company engaged in the processing of rubber into crumb rubber products, supported by various machines and equipment to achieve optimal productivity. One of the main machines in the production process is the dryer, which functions to reduce the moisture content in the product. The main issue identified is that the effectiveness of the dryer machine, as measured using the Overall Equipment Effectiveness (OEE) method, shows values of 84%, 84%, and 82% during August–October 2025, which are below the world-class standard of 85%. Analysis using the Reliability Centered Maintenance (RCM) and Failure Mode and Effect Analysis (FMEA) methods indicates that critical components such as chain, box rail, and box wheel have a high risk of failure based on their Risk Priority Number (RPN) values, thus requiring special attention in determining maintenance actions. The application of the Reliability Centered Maintenance (RCM) method identifies the most appropriate maintenance actions for critical components through the task selection process based on the characteristics of each failure mode. These results indicate that prioritizing maintenance on critical components can reduce potential failures and improve machine effectiveness in the production process.

PENINGKATAN KUALITAS PROSES PRODUKSI DENGAN PENERAPAN GOOD MANUFACTURING PRACTICES (GMP) DAN WORK IMPROVEMENT IN SMALL ENTERPRISES (WISE) PADA INDUSTRI KECIL DAN MENENGAH BIDANG PANGAN

Nofriani Fajrah, Muhammat Rasid Ridho — Sat, 30 May 2026 00:00:00 +0000

The Small and Medium Industries (SMEs) sector in Batam City, particularly in the food processing sub-sector, plays a strategic role in supporting regional economic growth and job creation. However, many SMEs still face production quality problems related to sanitation, non-ergonomic work environments, weak process control, and low worker discipline in implementing hygiene standards. These conditions may reduce product quality, productivity, and consumer trust. This study aims to analyze priorities for improving production process quality through the implementation of Good Manufacturing Practices (GMP) and Work Improvement in Small Enterprises (WISE) in food-processing SMEs in Batam City, as well as to develop a practical priority improvement model that can be used as a reference for similar enterprises. This research employed a case study approach using observation, interviews, documentation, and literature review as data collection techniques. GMP and WISE indicators were structured into criteria and sub-criteria, then analyzed using the Analytical Hierarchy Process (AHP) to determine the ranking of improvement priorities. The results show that the main priority criterion is Hygiene and Sanitation Program (46%), followed by Production Process Control (23%), Packaging, Storage and Material-Equipment Handling (11%), Organization of Work (11%), Workplace Design (6%), and Welfare Facilities (3%). At the sub-criteria level, the most dominant factors are First Aid Equipment (58%), Pest Prevention and Control Program (46%), Employee Habits (46%), and Documentation and Record Keeping (39%). The consistency ratio met the acceptable threshold, indicating that the judgments were consistent and reliable for decision-making purposes. The outputs of this study include a priority map for production quality improvement based on GMP-WISE and an AHP-based decision framework that helps SMEs allocate limited resources to the most critical improvement areas. The contribution of this study to knowledge development lies in strengthening an integrative approach that combines food safety, work ergonomics, and decision support systems to enhance the competitiveness of food-processing SMEs in a systematic, measurable, and applicable manner

OPTIMALISASI KUALITAS PRODUK AMDK MELALUI PENDEKATAN SIX SIGMA DALAM UPAYA MENURUNKAN CACAT PRODUK

Raodah Raodah, Irin Ramdhani, Nurul Ilmi, Erniyani Erniyani, Dwi Handayani — Sat, 30 May 2026 00:00:00 +0000

Product quality is a crucial factor in enhancing the competitiveness of the manufacturing industry, particularly in the Bottled Drinking Water (BDW) industry. This study aims to optimize the quality of bottled drinking water products through the Six Sigma approach in an effort to reduce product defect rates. The method employed is Six Sigma with the DMAIC (Define, Measure, Analyze, Improve, and Control) framework. The data used consist of product defect records collected over a three-month period, including broken bridge defects, tilted caps, standing caps, and overpressure defects. In the measure phase, defect rates, Defects Per Million Opportunities (DPMO), and sigma levels were calculated to evaluate the performance of the production process. The analyze phase revealed that broken bridge defects were the dominant type of defect based on Pareto diagram analysis, making them the primary focus for improvement efforts. Root cause analysis using a cause-and-effect (fishbone) diagram indicated that the main contributing factors originated from machine, method, and human aspects. Furthermore, in the improve phase, several corrective actions were proposed, including machine torque adjustment, operator training, implementation of Standard Operating Procedures (SOPs), and improvement of raw material quality. The control phase was conducted by establishing operational standards and process monitoring systems to ensure the sustainability of improvements. The results demonstrate that the implementation of Six Sigma provides a systematic solution for reducing product defects and continuously improving the quality of bottled drinking water products.

ANALISIS PENGENDALIAN KUALITAS UNTUK MENGURANGI PRODUK CACAT MENGGUNAKAN METODE FAILURE MODE AND EFFECT ANALYSIS DAN PROCESS CAPABILITY INDEX PADA PROSES PRODUKSI KEMASAN KALENG (Studi Kasus PT X)

Nadya Permata Sari Putri, Jaka Purnama — Sat, 30 May 2026 00:00:00 +0000

This study aims to analyze and control the quality of can products by identifying the main causes of defects and evaluating the capability of the production process. The problem faced by the company is the high defect rate exceeding the established standards, particularly dominant defects such as scumming. The methods used in this study are Failure Mode and effect Analysis (FMEA), the Plan-Do-Check-Act (PDCA) cycle, and the process capability index (Cpk). Data were collected through observation, interviews, and documentation during a specific production period. The analysis begins with identifying dominant defects using a Pareto diagram, followed by FMEA to determine the priority of failure causes based on the Risk Priority Number (RPN). Furthermore, continuous improvement is implemented through the PDCA cycle, which includes planning corrective actions, implementation, evaluation, and process standardization. The final stage involves calculating the Cpk index to assess the process capability in meeting company specification limits. The results indicate that several main defect causes with the highest RPN values require immediate improvement. The implementation of PDCA contributes to reducing defect rates and improving process control. However, the obtained Cpk values show that the production process is not yet fully stable and still requires further improvement. Therefore, improvements should focus on critical factors such as machine settings, operator skills, and operational procedures.