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INDONESIA
Jurnal Kendali Teknik dan Sains
Published by Universitas Katolik Widya Karya Malang
ISSN : 29864429     EISSN : 29863228     DOI : 10.59581
Core Subject : Science,
Computer Science & IT
Jurnal ini meliputi pengetahuan dan informasi riset atau aplikasi riset dan pengembangan terkini dalam bidang teknologi. Ruang lingkup meliputi bidang Informatika, Teknik Mesin, Teknik Elektro,Teknik Sipil, Teknik Industri, Ilmu Komputer dan Sains.
Arjuna Subject : Ilmu Komputer (semua kategori) - Perangkat Keras dan Arsitektur
Articles 133 Documents
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Analisis Pengendalian Kualitas Guna Meminimalsir Deffect Dengan Pendekatan Metode Statistical Quality Control (SQC) (Studi Kasus di PT. Romi Violeta Sidoarjo) Akhmad Fatikul Azzam; Setijanen Djoko Harijanto
Jurnal Kendali Teknik dan Sains Vol. 1 No. 3 (2023): Juli : Jurnal Kendali Teknik dan Sains
Publisher : Universitas Katolik Widya Karya Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59581/jkts-widyakarya.v1i3.652

Abstract

PT Romi Violeta Sidoarjo is one of the furniture companies in Indonesia, specializing in rattan and wood products, offering them to the global market. Quality is also a key factor for the company, as good quality is considered an achievement. In the production process, there are inevitably product errors that do not meet specifications or defects, one of which occurs during the finishing process, where there are 8 types of defects. In the data of the quality control department for finishing in the year 2022, there were 246 instances of defects out of a total production of 10,921. This can hinder further production processes, and the company will incur losses due to costs and expenses for repairing defective products. The research is conducted with the aim of determining the level of product quality control, the causes of product defects, and preventive actions or improvement proposals to reduce the defect rate. The method used in this research is Statistical Process Control (SPC), which aims to minimize the defect rate. From the calculations and analysis of the Statistical Process Control (SPC) results for the eight types of defects, the dominant defect type is color variation, which accounts for 67 instances with a percentage of 27.2%. Furthermore, on the control chart calculations, findings were made for the data samples in January, June, August, and September. The cause-and-effect diagram revealed factors such as human, machine, raw materials, methods, and the environment that can contribute to defects. However, the largest cause is human error, as almost 90% of the finishing work is done by humans, often without following the Standard Operating Procedures (SOP) set by the company.
Implementasi Metode Material Requirment Planning (MRP) Dalam Melakukan Perencanaan Persediaan Bahan Baku Kursi Susun Pada CV XYZ Arifa Yuriyadi; Siti Muhimatul Khoiroh
Jurnal Kendali Teknik dan Sains Vol. 1 No. 3 (2023): Juli : Jurnal Kendali Teknik dan Sains
Publisher : Universitas Katolik Widya Karya Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59581/jkts-widyakarya.v1i3.656

Abstract

CV XYZ is a company engaged in manufacturing with production in the form of stacking chairs. This company has a production capacity of 200 units of stacking chairs every day. The company has 3 types of bunk chairs, namely CH-100 KR, CH-200 KR, and CH-200 PC. Customer demand at this company tends to be fluctuating (up and down) which results in the company experiencing difficulties in determining the optimal raw material inventory to meet customer needs. The Material Requirement Planning (MRP) method is an appropriate method for scheduling inventory. The result of this scheduling model is in the form of a master production schedule (JIP) which is used to determine the demand for chair products for the next 6 months. The results of data processing obtained requests for stacking chairs in the next 6 months for the type CH-100 KR 10.724 unit, CH-200 KR of 10.998 unit, and CH-200 PC of 9.687 unit. The demand is then calculated using the MRP approach with LFL and EOQ. An effective material requirements planning method with the lowest cost is to use the Lot For Lot (LFL) method which gives the lowest cost results IDR 7,475,617,611.
Analisis Penentuan Perawatan Mesin Roll Table 5Q Dengan Metode Reliability Centered Maintenance (RCM) II Dan Life Cycle Cost (LCC) Di PT XYZ Widya Amelia Krisnanda; Endang Pudji Widjajati
Jurnal Kendali Teknik dan Sains Vol. 1 No. 3 (2023): Juli : Jurnal Kendali Teknik dan Sains
Publisher : Universitas Katolik Widya Karya Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59581/jkts-widyakarya.v1i3.660

Abstract

Machine maintenance must be carried out as a support for the reliability of a machine so that the production system can run smoothly to meet production needs. The fundamental problem of this study is in PT XYZ with the Roll Table 5Q machine, which frequently experiences sudden damage caused by critical components. The goal of the study was to determine the maintenance time interval of the 5Q Roll Table machine, the optimal age of the machine, and the number of mechanics based on the minimum total maintenance cost in an effort to improve the reliability of the machine using the Reliability Centered Maintenance (RCM) II methods and Life Cycle Cost (LCC) methods. From the results of research for critical components As Roll Table obtained interval value of 331 hours / 13 days once a year with the selection of action is Scheduled restoration task and for Bearing components obtained interval value of 109 hours/5 days once a year with the selection of action is Scheduled on-condition task. From the calculation of the total life cycle cost of Rp. 3,720,459,386 with the optimal number of mechanics on the Roll Table machine as many as 3 mechanics with an efficiency level of 9.63% with an optimal age for the Roll Table machine 5Q is 12 years.
Perencanaan Jadwal Perawatan Komponen Mesin Roll Forming Baja Ringan Untuk Meminimumkan Biaya Perawatan Risky Lazuardi Irsyad; Siti Mundari
Jurnal Kendali Teknik dan Sains Vol. 1 No. 2 (2023): April : Jurnal Kendali Teknik dan Sains
Publisher : Universitas Katolik Widya Karya Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59581/jkts-widyakarya.v1i2.677

Abstract

PT. Nadha Karya Utama Indonesia, a company engaged in the manufacturing service industry that produces mild steel, located on Jl. Cold Hamlet, RT 04 RW 07, Ngronggot, Kab. Nganjuk, East Java. The purpose of this study is to plan the Roll Forming machine maintenance schedule in order to minimize maintenance costs. The method used in this study is using the Preventive Maintenance method. The calculation results obtain the reliability value of each component on the Roll Forming machine, namely 0.5 for the reliability of the Roll component, 0.5 for the Gear Box component, 0.5 for the Main Engine component, 0.46 for Bearings, and 0.5 for reliability Roll Stand. Determination of maintenance time intervals is based on Peventive Maintenance on Roll components for 37 days, Gear Boxes for 108 days, Main Machinery for 108 days, Bearings for 53 days, and Roll Stands for 146 days. Based on the calculation results, the total cost of maintenance before carrying out preventive with reliability is known to be Rp. 19,340,000, after carrying out preventive calculations with reliability is Rp. 13,120,139.10, it can be seen that before and after carrying out preventive calculations there is a difference in costs of Rp. 6,219. 860.9. From these results it is known that preventive maintenance can reduce the costs incurred by PT. Nadha Karya Utama Indonesia from before the Preventive Maintenance calculations were carried out.
Pengukuran Usability Wastafel Otomatis Berbasis Arduino Menggunakan Metode Use Questionnaire Suryo Wibowo; Ferida Yuamita
Jurnal Kendali Teknik dan Sains Vol. 1 No. 3 (2023): Juli : Jurnal Kendali Teknik dan Sains
Publisher : Universitas Katolik Widya Karya Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59581/jkts-widyakarya.v1i3.712

Abstract

One of the automatic sink products was made by Yogyakarta Technology University students. It is felt that this automatic sink product needs to be tested for its usability or ease of use. The USE questionnaire was used to carry out this test, and five test parameters were used. specifically, learning ability, efficiency, memory, error avoidance, and satisfaction. Based on its use, the purpose of this paper is to find out the user's opinion about the automatic sink product. The distribution of the USE questionnaire consisting of ten questions and five rating points on a Likert Scale was used to conduct this kind of quantitative descriptive research on consumers of automatic sink products. This study obtained usability measurement results for automatic sink products with a value of 84.67% on learnability, 96.22% on efficiency, 82.44% on memoriability, 88% on errors and 76.88% on satisfaction.
Rancang Bangun Sistem Pendeteksi Kebocoran Gas Secara Portable pada Distributor Gas Rumah Tangga Zamzak , M.Arif; Sudiarsa, I Wayan; Putra , I Dewa Putu Gede Wiyata
Jurnal Kendali Teknik dan Sains Vol. 1 No. 3 (2023): Juli : Jurnal Kendali Teknik dan Sains
Publisher : Universitas Katolik Widya Karya Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59581/jkts-widyakarya.v1i3.1058

Abstract

In this research we design and build a portable gas leak detection system for household gas distributors. The performance of the designed system is described and evaluated. The system aims to speed up the time in detecting gas leaks. System portability allows implementation and monitoring in the form of a website. System design and performance are assessed and proven effective in detecting gas leaks, providing a reliable and efficient solution for gas distributors. The method used is the conditional method where the gas leak detection system is made with Nodemcu esp8266, sensor mq6, buzzer, step-down lm2596, and led. The results obtained from testing the leak detection system explain the testing and evaluation of the gas cylinder inspection system. The system is designed to check 3kg gas cylinders, category level 1 with numbers 300-500, category level 2 with numbers 500-750, category level 3 with numbers 750-1000, and category level 4 with numbers higher than 1000. Detection of gas leaks in each valve takes about 13 seconds to detect leaking gas, send data to the website and provide output to the buzzer.
Identifikasi Risiko Bahaya Pada Proses Produksi Batu Alam Di Stasiun Pemotongan Menggunakan Metode Hirarc Dan Five Why's Dicky Tri Sandyayuda; Widya Setiafindari
Jurnal Kendali Teknik dan Sains Vol. 1 No. 4 (2023): Oktober : Jurnal Kendali Teknik dan Sains
Publisher : Universitas Katolik Widya Karya Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59581/jkts-widyakarya.v1i4.1113

Abstract

PBA Surya Alam is one of the industries engaged in the natural stone processing industry (PBA) which has a fairly high risk of work accidents due to the lack of hazard control in the production process for workers. The application of occupational safety and health at PBA Surya Alam has been implemented, but its application has not been maximized, such as in terms of worker awareness in using personal protective equipment (PPE). From 2020 the cutting station experienced 7 work accident cases, in 2021 the cutting station experienced 4 work accident cases, and in 2022 the cutting station experienced 2 work accident cases. The purpose of this study was to determine the potential for work accidents, risk assessment, and efforts to control hazard risks in natural stone production process activities. In addition, this study aims to determine the most dominant risk controls and provide suggestions for controlling work accident factors in the natural stone production process. Therefore, this study uses the HIRARC (Hazard Identification Risk Assessment and Risk Control) method, which is a method for determining potential hazards that occur, knowing risk assessment to determine risk levels and knowing risk controls to reduce the occurrence of work accidents. The results of calculations using the HIRARC and 5W + 1 H methods show that there are 6 cases of potential hazards recorded at PBA Surya Alam with each risk, namely 6 cases of potential hazards with extreme risk, then as many as 8 potential cases hazard with high risk (high risk), as many as 5 cases of potential hazard with high risk. Whereas for the 5 W + 1 H method in the process of cutting Natural Stone from the results of observations and observations in the field making control proposals such as installing SOP signs at Natural Stone production stations so as a reminder when operators are working, safety controls for employees and safety helmets to minimize falling products (PPE), and controlling the use of gloves.
Identifikasi Keselamatan Dan Kesehatan Kerja Menggunakan Metode Hazop Dan Bowtie Pada PT Alis Jaya Ciptatama Thegar Gilang Rachmawan; Widya Setiafindari
Jurnal Kendali Teknik dan Sains Vol. 1 No. 4 (2023): Oktober : Jurnal Kendali Teknik dan Sains
Publisher : Universitas Katolik Widya Karya Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59581/jkts-widyakarya.v1i4.1114

Abstract

The purpose of this study is to find out what are the most dominant work accidents, what are the impacts that occur from work accidents, as well as appropriate risk control adventures for work accidents due to 13 work accidents in 2021 to 2023 which cause a loss of 33 working hours day at PT Alis Jaya Ciptatama. The method used is the Hazard And Operability Study (HAZOP) method and Bowtie analysis to identify potential occupational safety and health hazards by limiting the probability criteria in quantitative and consequence calculations and analyzing the risk path from cause to consequence using a bowtie diagram. The results obtained are that the highest activity is in activity code 3b with an LI value of 38.3, then in the smallest activity code 2a with an LI value of 10. The risks that occur fall into the high, medium, and low severity categories, so the warning given What is given is to install machine guards and ensure the operator has qualified machine usage skills.
Analisa Keandalan Operator Mesin Giling CTC Pada Produksi Teh Kebun Wonosari Faisyah Rizky Hidayati; Endang Pudji W
Jurnal Kendali Teknik dan Sains Vol. 1 No. 4 (2023): Oktober : Jurnal Kendali Teknik dan Sains
Publisher : Universitas Katolik Widya Karya Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59581/jkts-widyakarya.v1i4.1142

Abstract

Tea is a plantation commodity that is in great demand and needed. Day by day, there are more connoisseurs and requests regarding the types and forms of tea. In the process, tea processing requires expertise in processing each quality. The purpose of this study is to identify what factors influence human error during the milling process, find out the type of work that gets the highest HEP value, and provide suggestions for improvements to reduce human errors that occur in the processing process. This research was conducted at the Wonosari Tea Plantation Factory. From the results of observations, it was obtained that the largest human error probability was obtained at the Wonosari Garden Tea Factory in the milling process with a probability of 0.7997584. And the lowest HEP is on the task of maintaining a max temperature of 27oC with a value of 0.00000681. The thing that is proposed to the company to reduce the human error that occurs is to provide an understanding of the SOP and emphasize the SOP that applies to the processing process. Companies can also use the HEP value as a reference to reduce human error that can harm the company.
Analisa Pemborosan Pada Proses Produksi Air Minum Dalam Kemasan Dengan Metode Value Stream Mapping Dan Waste Assesment Model Di CV Dafista Mulia Moh Rizky Ainul Yakin; Enny Aryanny
Jurnal Kendali Teknik dan Sains Vol. 1 No. 4 (2023): Oktober : Jurnal Kendali Teknik dan Sains
Publisher : Universitas Katolik Widya Karya Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59581/jkts-widyakarya.v1i4.1164

Abstract

CV Dafista Mulia is a drinking water producer company located in Lamongan Regency. The problem that is often faced by companies is the amount of waste that occurs in the process of producing bottled drinking water. The most critical percentage of waste in the bottled water production process (AMDK) is waste overproduction with a weighting percentage of 25.4%; waste defet with a weighting percentage of 16.2%; waste inventory with a weighting percentage of 14.9%; waste unnecessary motion with a weighting percentage of 14.1%; waste transportation with a weighting percentage of 11.7%; waste waiting with a weighting percentage of 9%; and waste excess processing with a weighting percentage of 8.7%. The initial activity time before the repair was 466 minutes (7 Hours 46 Minutes) and after the repair was reduced to 416 minutes (6 Hours 51 Minutes). Based on the Failure Mode and Effect Analysis (FMEA), it is known that the root cause of the problem with the highest waste is Overproduction, namely production planning that is not quite right with a Risk Priority Number (RPN) score of 396. Recommendations for improvements that can be proposed are to carry out production planning using data - historical data that exists and is adjusted to balance the purchasing of raw materials with orders from consumers so that the results of the Overproduction can become a safety stock so that the Overproduction can function in the next consumer order.

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