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Jurnal Sains dan Teknologi: Jurnal Keilmuan dan Aplikasi Teknologi Industri
Published by Sekolah Tinggi Teknologi Industri Padang
ISSN : 14125455     EISSN : 26152827     DOI : http://dx.doi.org/10.36275/stsp.vxxix.xxx
Core Subject : Science, Engineering,
Computer Science & IT Engineering Industrial & Manufacturing Engineering
Jurnal Sains dan Teknologi STTIND Padang ini diterbitkan 2 (dua) kali dalam setahun pada bulan Juni dan Desember. Redaksi menerima tulisan ilmiah tentang hasil penelitian, survei, dan telaah pustaka yang erat hubungannya dengan sains dan teknologi industri. Ruang lingkup artiket : Teknik Industri, Teknik Pertambangan Teknik Lingkungan Sistem Informasi. Sains dan Teknologi Pendidikan serta Kejuruan.
Arjuna Subject : Teknik (semua kategori) - Tenik Industri dan Manufaktur
Articles 233 Documents
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IDENTIFIKASI PENYELESAIAN LINE STOP A&B CYLINDER HEAD PADA ROUGH RAW MATERIAL MENGGUNAKAN POKA YOKE Indrawan Indrawan; Muhammad Rusydi; Rizki Dwi Afrianto
Jurnal Sains dan Teknologi: Jurnal Keilmuan dan Aplikasi Teknologi Industri Vol 22, No 2 (2022): JURNAL SAINS DAN TEKNOLOGI
Publisher : Sekolah Tinggi Teknologi Industri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36275/stsp.v22i2.495

Abstract

In solving problems in this study background using the Poka Yoke method. PT. XYZ is the object of research this time and focuses on solving the Line Stop problem on Line A & B Cylinder Head on Rough Raw Materials. The purpose of the research for possible failure that occurs or has happened. After the failure is known, the next alternative problem solving is to prevent errors that will occur and/or activities/actions using the Poka Yoke method. The discovery in this study is known that the problem process when the spare part runs from the stopper at the shutter input rough raw material line A & B. So that it results in a spare part and exceeding work in procces (WIP) which can cause the IMSP-0011 engine to become a fault and line stop average 10 minutes per day. The results of this study using the Poka Yoke method through specific, measurable, achievable, reasonable and timephase (SMART) approaches which in essence are by adding Poka Yoke barrier to the stopper and changing ordinary nuts into nut lock. So the conclusion results of the implementation show the stopper functioning maximally, then the spare part according to the WIP.
SIMULASI PERBAIKAN LEAD TIME PROSES PRODUK BUMPER MENGGUNAKAN VALUE STREAM MAPPING DAN PROMODEL DI PT. SUZUKI INDOMOBIL MOTOR Ismail Kurnia; Dionisius Debata; Prima Fithri
Jurnal Sains dan Teknologi: Jurnal Keilmuan dan Aplikasi Teknologi Industri Vol 22, No 2 (2022): JURNAL SAINS DAN TEKNOLOGI
Publisher : Sekolah Tinggi Teknologi Industri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36275/stsp.v22i2.497

Abstract

The development of the industry in this globalization era is very rapid, causing complex problems. The era of globalization requires all aspects of life to adapt to the development of more advanced times with the sophistication of its technology. One of the ways to increase excellence is to minimize waste in the production line. Beginning by describing the actual condition of the production line and trying to eliminate the waste in order to realize a lean value stream. The method used is a value stream mapping that is useful for seeing the processing time detail so that it knows the value added and non value added as well and Promodel software to simulate the proposed improvement given to improve the process lead time. Based on the current stream map that has been made known waste activities that occur is over process, inventory, and waiting. The front bumper assy panel of the Model Y9J at PT. Suzuki Indomobil Motor is the product with the highest demand for spare parts, where the lead time for stock is 21.2 days, and the lead time for processing is 1.14 days so it is necessary to make improvements using a Value stream mapping simulation, so stock lead time to 6.1 days and process lead time to 0.6 day.
ANALISA KESTABILAN TRANSIEN MENGGUNAKAN METODE TRAJEKTORI KRITIS PADA SISTEM WILAYAH SUMBAR Ilham Afandi Arista; Arfita Yuana Dewi
Jurnal Sains dan Teknologi: Jurnal Keilmuan dan Aplikasi Teknologi Industri Vol 22, No 2 (2022): JURNAL SAINS DAN TEKNOLOGI
Publisher : Sekolah Tinggi Teknologi Industri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36275/stsp.v22i2.500

Abstract

This research is to examine the transient stability analysis using the critical trajectory method in the system of the West Sumatra region. Transient stability plays an important role for safety and reliability in the electric power system which aims to estimate the condition of the system when an outage occurs, either in the form of line discharge or generator discharge. This study discusses the stability of transients that occur due to disturbances in the system that affect the generator. When a disturbance occurs, the system will be in a transient state. In this condition, the safety relay will work to open the circuit breaker within a certain time. However, this does not guarantee that the system will return to steady state conditions. This study discusses the stability of transients that occur due to disturbances in the system that affect the generator. When a disturbance occurs, the system will be in a transient state. In this condition, the safety relay will work to open the circuit breaker within a certain time. However, this does not guarantee that the system will return to steady state conditions. After the disturbance the system will return to stability with a tcb open time of 0.300 second, while when the release of channel 10 between the Pauh Limo-Simpang Haru buses occurs with a tcb open time of 0.250 seconds, the critical clearing time value is 1.143 seconds, then the critical path that occurs in the simulation results the time of the loose line between the Pauh Limo-Simpang Haru bus is 1.143-1.144 second.
ANALISIS PENGARUH JENIS AGEN CROSSLINKER TERHADAP KARAKTERISTIK PEREKAT KAYU BERBAHAN TEPUNG TAPIOKA DAN PVA Bima Prasetya Pancasakti; Budhijanto Budhijanto; Vincent Vincent
Jurnal Sains dan Teknologi: Jurnal Keilmuan dan Aplikasi Teknologi Industri Vol 22, No 2 (2022): JURNAL SAINS DAN TEKNOLOGI
Publisher : Sekolah Tinggi Teknologi Industri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36275/stsp.v22i2.514

Abstract

This research aimed to analyze the characteristics of adhesive using the variation of crosslinking agents. The types of crosslinking agents were citric acid and oxalic acid which have the capability to create a bond with cassava starch-PVA adhesive. The synthesis process was conducted through gelatinization, hydrolysis, oxidation, and polymerization. The reaction was run using a three-neck flask and mercury stirrer at 70 °C and 1 atm. The characteristic of adhesive such as viscosity, dry and wet shear strength, solid content, durability, and surface morphology was analyzed based on the standard. The result depicted that the use of citric acid as crosslinking agent influenced the quality of the adhesive. Citric acid is able to enhance the viscosity and the strength of the dry and wet shear strength of the adhesive. The exact value of the dry and wet shear strength of the adhesive are 1,0173 and 0,7039 MPa. The addition of citric acid has a big impact on the thickness of the adhesive during the period. The morphology of the adhesive showed that the use of crosslinking agent had a big impact on the homogeneity level of the adhesive. Therefore, it can be concluded that citric acid with 2% of composition from cassava starch weight is a suitable crosslinking agent to enhance the quality of cassava starch-PVA adhesive.
PENGUKURAN KINERJA RANTAI PASOK DENGAN INTEGRASI METODE SUPPLY CHAIN OPERATION REFERENCE (SCOR) DAN METODE ANALYTICAL HIERARCHY PROCESS (AHP) DI PT. KUNANGO JANTAN Henny Yulius; Riko Ervil; Della Yulina Novita
Jurnal Sains dan Teknologi: Jurnal Keilmuan dan Aplikasi Teknologi Industri Vol 22, No 2 (2022): JURNAL SAINS DAN TEKNOLOGI
Publisher : Sekolah Tinggi Teknologi Industri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36275/stsp.v22i2.517

Abstract

PT. Kunango Jantan is a manufacturing industry that focuses on the distribution of ready-to-use steel plates for the construction, mining, electricity, telecommunication and transportation industries. In the procurement process there were delays in raw materials, which affected production time which resulted in not achieving production volume targets and delays in delivery. In the production process there are several obstacles so that the product is not in accordance with the wishes of the customer. This resulted in consumer dissatisfaction with the company. So that in this study the measurement of the company's supply chain performance must be carried out. This study uses the Supply Chain Operation Reference (SCOR) method with the integration of the Analytical Hierarchy Process (AHP) method. The SCOR method is used to determine supply chain performance and the AHP method is used to determine the weighting of performance indicators.The results of SCOR are that there are 6 core processes that are carried out at PT. Kunango Jantan, namely plan, source, make, deliver, return and enable. Then with 24 measurement matrices obtained, which consists of 3 performance attributes, namely reliability, responsiveness and agility. The plan process is the highest priority with a value of 26 and for the measurement matrix the highest value is the manage performance of return processes cycle with a value of 0.115. Return is the lowest core process of 1.166 and Schedule Defective Return Receipt Cycle Time The is the lowest performance matrix with a value of 0.06 and these two lowest processes require more attention for improvement of all processes that must be continuously evaluated.
ANALISIS EKONOMI PERBANDINGAN PENGGUNAAN ALAT COAL CRUSHER DAN FIXED SCREEN DALAM KEGIATAN COAL GETTING Muhammad Faisal Seprizal; Machmud Hasjim; Restu Juniah
Jurnal Sains dan Teknologi: Jurnal Keilmuan dan Aplikasi Teknologi Industri Vol 22, No 2 (2022): JURNAL SAINS DAN TEKNOLOGI
Publisher : Sekolah Tinggi Teknologi Industri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36275/stsp.v22i2.524

Abstract

Coal getting is one of the activities involved in mining operations. PT. Manggala Alam Lestari, Indonesia carrying out coal getting activities by including in pit coal processing, namely selecting the size or sizing of coal using a fixed screen or grizzly screen. However, the use of fixed screen needs to be analyzed from an economic point of view by comparing with other coal processing processes. This study aims to conduct an economic analysis by comparing investment in coal crusher with fixed screen in coal getting activities. The results showed that coal crusher investment has a Net Present Value (NPV) value of Rp. 751,513,587,600, Internal Rate of Return (IRR) of 10.0279%, Profitability Index of 55.4 and Payback Period of around 0.36 years (4.3 months). Then, fixed screen investment has a Net Present Value (NPV) value of Rp. 709,285,734,051.00, Internal Rate of Return (IRR) of 10.0273%, Profitability Index of 528.1 and Payback Period of around 0.27 years (3.29 months. Fixed screen can still be the main choice because it has a lower investment value than coal crusher so that the resulting profit is also greater.
KOMPARASI OPTIMALISASI PERALATAN MEKANIS PADA KEGIATAN PENGUPASAN OVERBURDEN MENGGUNAKAN METODE KAPASITAS PRODUKSI DAN METODE OVERALL EQUIPMENT EFFECTIVENESS (OEE) Hisni Rahmi; Afni Nelvi
Jurnal Sains dan Teknologi: Jurnal Keilmuan dan Aplikasi Teknologi Industri Vol 22, No 2 (2022): JURNAL SAINS DAN TEKNOLOGI
Publisher : Sekolah Tinggi Teknologi Industri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36275/stsp.v22i2.529

Abstract

The company's production target in overburden stripping is 200 BCM/hour, while the actual in the field is still below the production target. Therefore, it is necessary to optimize production using queuing theory. Queuing theory is a method that can be used to calculate and model the behavior of trucks and loaders in open pits so that loading activities take place better. The purpose of this research is to optimize the productivity of digging and loading equipment using queuing theory. The primary data needed is the loading and unloading cycle time, transportation equipment cycle time, repair time, standby time, working time. Secondary data needed in the form of available working time by the company. The results of the study resulted in the actual productivity of the excavator is 140.59 BCM/hour with the production capacity method and 106.68 BCM/hour using the OEE method, while the dumptruck is 135.33 BCM / hour with the production capacity method and 161.78 BCM/hour using the OEE method where it has not met the production target. Productivity after being optimized for excavator loading and unloading equipment increased by 52.74% to 297.49 BCM / hour using the production capacity method and increased by 58.85% to 259.24 BCM / hour using the OEE method, while dumptruck productivity increased by 36.85% to 214.31 BCM / hour with the production capacity method and increased by 22.47% to 208.68 BCM / hour using the OEE method which has met the production target.
IMPLEMENTASI JIT PADA TAHAP SERAH DAN TERIMA KOMPONEN RING PISTON ENGINE DI PT. TMMI Yani Koerniawan; Suhermanto Suhermanto; Anwar Hilman
Jurnal Sains dan Teknologi: Jurnal Keilmuan dan Aplikasi Teknologi Industri Vol 22, No 2 (2022): JURNAL SAINS DAN TEKNOLOGI
Publisher : Sekolah Tinggi Teknologi Industri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36275/stsp.v22i2.540

Abstract

Through the background handover stage and receive the piston engine ring component conducted by PT. Toyota Manufacturing Motor Indonesia (TMMI) there are wasteful activities or do not have added value. Then the part of the way to eliminate waste in the handover activity and accept the component is by just in time (JIT), then later there will be eliminated stages. Through this research has the aim to analyze the implementation of Just In Time and the influence of the implementation itself on these components. The method used in this study is Root Cause Analysis (RCA), with the aim of eliminating wasteful activities into just in time activities. Then the result of this study is the identification of the existence of 3 roots that cause the problem of the wasteful activity. Just in time implementation can eliminate activities which initially had 9 process activities for handover and accept it into 4 process activities. The inspection section does not require back to carry out handover activities and accept the user of the goods. So that time will be more efficient than 33 minutes to 16 minutes by one time the handover activity and receive the component. Conclusion from handover and receive directly from the supplier of the production line (place of the user). Then causes the component does not require back to be stored in a transit warehouse, in the end the transit warehouse will disappear.
ANALISIS KESELAMATAN DAN KESEHATAN KERJA TERHADAP PRODUKTIVITAS MENGGUNAKAN REGRESI LINEAR BERGANDA DI PT. LEMBAH KARET Tri Ernita; Ali Sutan Nasution; Boby Aditya
Jurnal Sains dan Teknologi: Jurnal Keilmuan dan Aplikasi Teknologi Industri Vol 22, No 2 (2022): JURNAL SAINS DAN TEKNOLOGI
Publisher : Sekolah Tinggi Teknologi Industri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36275/stsp.v22i2.553

Abstract

PT. Lembah Karet is one company industry processing rubber natural Becomes rubber crumb (crumb rubber) which produces crumb Rubber SIR 20 with orientation export 95%. Destination country export biggest that is America union. PT Lembah Karet sued for always using K3 in work, thing this is recommended company not to happening accident and death workers, disruption of operational processes company, reducing production output, and the creation of poor industrial relations. Occupational Health Variables with score significant 0.000 < 0.05 then could concluded that Ho is rejected and Ha is accepted, it means Occupational Health by Partial take effect positive and significant to Productivity. More Occupational Health make safety work Becomes guaranteed. It caused because of good Occupational Health could make employee capable guard stability results productivity at PT. Rubber Valley Effect of Occupational Health and Safety where do 13% work? results this obtained from distributed questionnaire to employees of PT. Lembah Karet
ANALISIS SISTEM DISTRIBUSI AIR BERSIH MENGGUNAKAN EPANET 2.0 DI PDAM TIRTA LANGKISAU UNIT PELAYANAN LUMPO Sri Yanti Lisha; Wathri Fitrada; Hendri Sawir; Teguh Pujangga Putra
Jurnal Sains dan Teknologi: Jurnal Keilmuan dan Aplikasi Teknologi Industri Vol 22, No 2 (2022): JURNAL SAINS DAN TEKNOLOGI
Publisher : Sekolah Tinggi Teknologi Industri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36275/stsp.v22i2.555

Abstract

Lumpo Service Unit is one of the clean water service units in PDAM Tirta Langkisau, Pesisir Selatan Regency, which serves parts of IV Jurai District. The Lumpo Service Unit currently has a production capacity of 3 l/sec or still 24% of the total served population and a fairly high water loss rate (35% or 2,671 m3). This study aims to analyze the clean water needs of the community in the Lumpo Unit area from 2021 and 2025 and analyze the condition of the clean water distribution network system in the Lumpo Service Unit in 2021 and 2025. Analysis of the water distribution system network was carried out using Epanet 2.0. It was found that the water demand in 2021 was 5.45 l/s (22.51 l/s at a service level of 100%) and there was an increase in 2025, namely 28.23 l/s. Analysis of the piping distribution network in 2025 shows that 27 out of a total of 49 junctions have water pressure below the minimum limit for distribution pipe criteria from PERMEN PU No. 18/PRT/M/2007, as well as 13 out of 50 total pipes with water flow rates below the minimum limit of the same criteria of 0.3 m/s.

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