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Jurnal Industri Samudra
Published by Universitas Samudra
ISSN : -     EISSN : 27977730     DOI : https://doi.org/10.55377/jis.v5i1
Core Subject : Economy, Science, Social, Engineering,
Chemical Engineering, Chemistry & Bioengineering Control & Systems Engineering Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Environmental Science
Fokus Jurnal ini adalah Teknik Industri tetapi tidak terbatas pada aspek Desain dan Pengukuran Kerja, Penelitian dan Analisis Operasi, Analisis Ekonomi Teknik, Teknik Fasilitas dan Manajemen Energi, Rekayasa Kualitas & Realibilitas, Faktor Ergonomi dan Manusia, Teknik dan Manajemen Operasi, Manajemen Rantai Pasokan, Teknik Manajemen, Keselamatan, Rekayasa Informasi, Desain dan Pengembangan Produk, dan Desain dan Rekayasa Sistem.
Arjuna Subject : Teknik (semua kategori) - Teknik (Lain-Lain)
Articles 87 Documents
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Raw Material Inventory Control Using the POQ Method for Cost Efficiency at SPPG Kota Siantar Ryan Farel; Diana Khairani Sofyan; Trisna
Jurnal Industri Samudra Vol 7 No 2 (2026): Jurnal Industri Samudra
Publisher : Program Studi Teknik Industri, Fakultas Teknik. Universitas Samudra

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55377/jis.v7i2.15263

Abstract

Effective inventory management is crucial for the operational continuity of service units, including the Nutrition Fulfillment Service Unit (SPPG) that implements the Free Nutritious Meal (MBG) Program. The Siantar City SPPG faces issues with poorly scheduled ordering patterns for raw materials—specifically rice and cooking oil—resulting in excessive ordering frequency, inflated transportation and administrative costs, and inventory accumulation in the warehouse. This study aims to determine the optimal order quantity, optimal ordering period, and Total Inventory Cost (TIC) by employing the Periodic Order Quantity (POQ) method in conjunction with calculations for Economic Order Quantity (EOQ), Safety Stock, and Reorder Point (ROP). The data utilized includes consumption figures, incoming stock, raw material prices, ordering costs, and lead times recorded from January to February 2026. The results indicate an optimal order quantity of 1,960.86 kg for rice and 1,236.45 liters for cooking oil, with optimal ordering intervals of 13 and 18 working days, respectively. Implementing the POQ method yields a Total Inventory Cost of Rp555,571.51 for rice and Rp370,847.50 for cooking oil—a combined total of Rp926,419.01—which is significantly lower than the organization's actual cost of Rp2,816,999.40. Consequently, the POQ method achieves a total inventory cost saving of Rp1,890,580.39, or 67.1%, compared to the Siantar City SPPG's actual ordering policy.
Quality Assurance Strategy for Higher Education Based on Student Preferences Through CE-QFD Approach Mahrani Arfah; Yustiar Gunawan; I Wayan Gede Suharta Dewantara
Jurnal Industri Samudra Vol 7 No 2 (2026): Jurnal Industri Samudra
Publisher : Program Studi Teknik Industri, Fakultas Teknik. Universitas Samudra

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55377/jis.v7i2.15308

Abstract

Competition among private universities (PTS) and implementation of the Minister of Education and Science Regulation No. 39 of 2025 require a guarantee strategy for better quality,​ responsive to students' preferences. This research aims to identify need student as voice of the customer, map the connection between student needs (WHATs) and institutional development strategies (HOWs) through the House of Quality, and integrate the principles of Concurrent Engineering and Quality Function Deployment (CE-QFD) in determining priority technical development quality. Research use approach descriptive-quantitative with a case at the Islamic University of North Sumatra involving 395 students as respondents. Data were analyzed through compilation matrix HoQ and calculations weight priority technical for determine the main development strategy. The results show that the development strategy for education, improvement quality source Power humans, as well as strengthening finance and infrastructure become priority in fulfilling students' preferences. The integration of CE-QFD results in a systematic way that allows synchronization of students with taking decision institutional in a simultaneous and cross-functional way, so that support formulation of a guaranteed strategy for quality education tall based on student.
Waste Analysis and 5S-Based Improvement Proposals in UPVC Bathroom Door Production Muhammad Fauzan; Yusri Nadya; Yusnawati Yusnawati; Novianda Novianda; Muhammad Zeki; Ryan Pramanda
Jurnal Industri Samudra Vol 7 No 2 (2026): Jurnal Industri Samudra
Publisher : Program Studi Teknik Industri, Fakultas Teknik. Universitas Samudra

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55377/jis.v7i2.15345

Abstract

The production process of UPVC bathroom doors at Sinar UPVC still faces various wastes that cause low work efficiency. Problems found include unsystematic arrangement of tools and materials, waiting time during the production process, and operator movements that do not provide added value. These conditions have an impact on increasing production time and reducing company productivity. This study aims to identify waste that occurs in the production process, determine the dominant types of waste, and analyze the root causes of waste as a basis for preparing improvement proposals. The research method used is the Lean Manufacturing approach with the application of 5S (Seiri, Seiton, Seiso, Seiketsu, and Shitsuke). Data collection was carried out through direct observation, interviews, documentation, and measurement of process time. Data analysis included waste identification, data adequacy and uniformity tests, Flow Process Charts (FPC), and Fishbone Diagrams to determine the root causes of waste. The results showed that the dominant wastes were motion and waiting. After the implementation of the 5S-based improvement proposals, motion waste decreased by 50.00%, while waiting waste decreased by 53.85%. These improvements also increased production process efficiency by 16.67%. Thus, implementing the 5S method has been proven to reduce waste, improve work area conditions, and increase production efficiency at Sinar UPVC.
Evaluation Of Behavior-Based Safety Implementation To Support Safety Culture At PT. Pertamina Hulu Rokan Rantau Field Ryan Pramanda; Gibran Al Farisi
Jurnal Industri Samudra Vol 7 No 2 (2026): Jurnal Industri Samudra
Publisher : Program Studi Teknik Industri, Fakultas Teknik. Universitas Samudra

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55377/jis.v7i2.15351

Abstract

Occupational safety in the oil and gas industry requires continuous evaluation of workers' behavior and workplace conditions. This study aims to evaluate Behavior-Based Safety (BBS) implementation in identifying safety behaviors, workplace conditions, and the follow-up of safety findings at the Production Gathering Center (PPP) of PT Pertamina Hulu Rokan Rantau Field. A quantitative descriptive approach was applied using secondary company data, including BBS observation checklists and safety reports. The analysis included BBS classification, Antecedent-Behavior-Consequence (ABC) analysis, and follow-up status evaluation. All 10 checklist indicators were classified as safe (100%), with 0% unsafe. Of 3,343 BBS findings, 1,891 (56.57%) were Safe Actions, 1,143 (34.19%) Unsafe Conditions, 267 (7.99%) Safe Conditions, and 42 (1.26%) Unsafe Actions. ABC analysis identified supervision, safety training, reminders, and safety communication as factors associated with safe behavior. Of 2,870 safety reports, 2,812 (97.98%) were Closed, while 58 (2.02%) remained In Progress. These findings indicate that BBS supports safety evaluation, although unsafe workplace conditions and incomplete corrective actions require continued attention
Effect of Pyrolysis Temperature on Changes in Mass, Dimensions, and Morphology of Cellulose Nanocrystal-Based Carbon Mahyuni Harahap; Muhammad Balyan; Sahat Fernando Bakara
Jurnal Industri Samudra Vol 7 No 2 (2026): Jurnal Industri Samudra
Publisher : Program Studi Teknik Industri, Fakultas Teknik. Universitas Samudra

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55377/jis.v7i2.15299

Abstract

Cellulose nanocrystals (CNCs) offer renewable alternatives to conventional carbon precursors. This study examined how pyrolysis temperature affects the mass, dimensions (diameter and thickness), and surface morphology of CNC-derived carbon. CNCs with 80% crystallinity were compressed into 13 mm films under 10 tons of pressure and pyrolyzed at 300, 600, and 900 °C under nitrogen at 10 °C/min. Mass and dimensional changes were measured, and morphology was examined using scanning electron microscopy (SEM). Mass loss increased from 49.1% at 300 °C to 73.7% at 600 °C and 76.0% at 900 °C. Diameter and thickness also decreased, with the largest changes occurring between 300 and 600 °C and smaller changes thereafter, suggesting that most thermal decomposition occurred before 600 °C. Carbon appeared chunk-like at 300 °C, porous at 600 °C, and denser, ordered, and flake-like at 900 °C. These findings provide an overview of CNC behavior and morphology as biomass-based carbon precursors
Business Development Strategies for a Traditional Food SME Using BMC, SWOT, and QSPM Difana Meilani; Atikah Amatullah
Jurnal Industri Samudra Vol 7 No 2 (2026): Jurnal Industri Samudra
Publisher : Program Studi Teknik Industri, Fakultas Teknik. Universitas Samudra

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55377/jis.v7i2.15335

Abstract

Indonesian SMEs contribute to employment but face management and marketing challenges. Rakik Kacang Amai Baja, a traditional Minangkabau peanut cracker producer in Payakumbuh, faces declining production, limited distribution, and underused digital marketing. This study develops strategies to expand market reach and competitiveness using the Business Model Canvas (BMC), SWOT, Internal Factor Evaluation (IFE), External Factor Evaluation (EFE), Internal–External (IE) matrix, and Quantitative Strategic Planning Matrix (QSPM). Data were obtained through interviews, observations, questionnaires, sales records, and literature. IFE and EFE scores of 2.98 and 3.29 placed the business in IE Cell II (grow and build). SWOT identified intensive, integration, and diversification strategies. QSPM prioritized intensive strategies (TAS 7.120), followed by integration (6.278) and diversification (6.076). Recommendations include improving branding, distribution, product quality, customer service, loyalty, and packaging. The proposed BMC addresses value propositions, customer relationships, channels, and customer segments to support sustainable business development.
Analysis of Open Top Roller Machine Effectiveness and Identification of Six Big Losses at PT Perkebunan Nusantara IV Regional IV Unit Usaha Danau Kembar Taufik; Felisha Putri Hadi; Wisnel
Jurnal Industri Samudra Vol 7 No 2 (2026): Jurnal Industri Samudra
Publisher : Program Studi Teknik Industri, Fakultas Teknik. Universitas Samudra

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55377/jis.v7i2.15350

Abstract

The six-unit Open Top Roller (OTR) system at the milling station of PT Perkebunan Nusantara IV Regional IV Unit Usaha Danau Kembar recorded 43 failure events and accumulated 519 machine-hours of downtime, yet its effectiveness and performance losses had not been comprehensively measured. The objective of this study was to measure the effectiveness of the OTR system using Overall Equipment Effectiveness (OEE), identify losses through the six big losses framework, establish priority causes, and develop maintenance improvement proposals. A quantitative descriptive method was employed by calculating machine-hour-based OEE, analyzing six big losses, identifying causes through fishbone diagrams, and establishing priorities using Failure Mode and Effects Analysis (FMEA), critical values, and cross-functional validation. The results showed an average OEE of 66.75%, comprising 96.52% availability, 69.18% performance efficiency, and a 100% quality rate for OTR outputs accepted for subsequent processing, while reduced speed losses constituted the largest measurable loss at 29.77%, with nine priority causes identified. These results indicate that high operating-time availability has not been accompanied by output achievement at the ideal capacity because process speed, machine-condition recording, maintenance activities, initial inspections, and workplace cleanliness have not been controlled consistently. The findings demonstrate that improvements to the OTR system should focus on controlling reduced speed losses and equipment failure losses through five proposed improvement instruments: an OTR component inspection and maintenance interval standard, an OTR operational readiness checksheet, an OTR machine and workplace cleaning checksheet, a standard operating procedure for raw material preparation and cleaning, and an OTR speed and stability monitoring checksheet.

Page 9 of 9 | Total Record : 87

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