scholarly journals Reducing The Operational Stop Time of Hauller Komatsu Hd465-7 by Using the Six Sigma’s Approach in PT X

2016 ◽  
Vol 7 (2) ◽  
Author(s):  
Humiras Hardi Purba
Keyword(s):  
Six Sigma ◽  
Dump Truck ◽  
Heavy Equipment ◽  
Stop Time ◽  
Driving Speed ◽  
Plan Selection ◽  
Dump Trucks ◽  
Standardization Process ◽  
The Cost ◽  
And Control

An operational stop time is a condition where heavy equipment is not working as usual. It is important to avoid this condition since excessive idling wastes an enormous amount of fuel and money. However, the operational stop time of a dump truck Hauller HD465-7 is 2.83 minutes, which is far above the normal standard. This project aims to optimize the improvement of an operational stop time by using a Six Sigma method with optimize plan selection. This will return the operational stop time to the standard range within 1.25 to 1.65 minutes. These steps of define, measure, analyze, improve, and control are applied to the standardization process according to the rules and criteria established by the Six Sigma. The result found that the Six Sigma’s approach which was applied in PT X has reduced the cost from US$1,105,300 to US$963,000 every month. An improvement have been made to matching fleet by combining six fleet of dump trucks at driving speed of 22 km per hour and the average simulated haul distance was 2,000 meters.

scholarly journals OPTIMASI TARGET PRODUKSI BERBIAYA ALOKASI PEKERJAAN MINIMUM DENGAN PENDEKATAN PROGRAM LINIER (STUDI KASUS : PT. TASS ENGINEERING)

2019 ◽  
Vol 4 (2) ◽  
pp. 81-93
Author(s):  
Helena Sitorus ◽  
Ratna Suminar ◽  
Arohman Dwi Santoso
Keyword(s):  
Optimum Allocation ◽  
Dump Truck ◽  
Assignment Method ◽  
Maximum Profit ◽  
Dump Trucks ◽  
Research Findings ◽  
Optimum Solution ◽  
The Cost ◽  
A Company ◽  
Production Target

AbstrakPT. TASS Engineering adalah perusahaan yang bergerak di bidang karoseri truk. Perusahaan ini bekerja sama dengan pihak kedua (pemborong) dalam menyelesaikan pekerjaan untuk memenuhi pesanan pelanggan. Diantara produknya, terdapat 4 jenis produk (Dump Truck, Subframe, Tilting, dan Tanki Truck) yang pengerjaannya diserahkan kepada 4 tim  pemborong. Keputusan alokasi pekerjaan dilakukan dengan cara memberikan pekerjaan kepada tim yang sudah menyelesaikan pekerjaan tertentu. Cara alokasi ini ternyata menimbulkan biaya tiap tim dalam mengerjakan satu jenis produk yang sama  cukup bervariasi. Variasi biaya pengerjaan tentu saja berdampak bagi variasi keuntungan. Perlu ditentukan alokasi jenis dan jumlah pekerjaan yang tepat bagi masing-masing tim sehingga mendapatkan keuntungan yang maksimum. Hasil alokasi optimum adalah parameter keputusan kombinasi jumlah produksi tiap produk selain kapasitas tiap tim dan waktu pengerjaan.. Kombinasi jumlah tiap produk ini merupakan target produksi atau target penjualannya. Untuk itu diperlukan penelitian yang bertujuan 1) menentukan alokasi pekerjaan yang optimum, 2) menentukan target produksi tiap produk untuk mendapatkan keuntungan maksimum. Alokasi pekerjaan dilakukan dengan membandingkan metode Penugasan Hungarian dan metode Transportasi untuk memilih total biaya yang paling minimum. Solusi optimum jumlah produk yang diproduksi untuk mencapai keuntungan maksimum dilakukan dengan Program Linier. Hasi temuan penelitian menunjukkan bahwa 1) dump truck dikerjakan sebanyak 88% oleh tim-1 dan 12% oleh tim-4; subframe dikerjakan sebanyak 39% oleh tim-2, 26% oleh tim-3, 35% oleh tim-4; tilting dikerjakan oleh tim-3, dan tanki truk dikerjakan oleh tim-2. Target produksi (target penjualan) untuk mendapatkan keuntungan maksimum adalah dengan memproduksi dump truck 73 unit, subframe 120 unit, tilting 29 unit, dan tanki truk 33 unit. Solusi ini memberikan kenaikan keuntungan sebesar 0.9%.. Kata kunci: optimum, Hungarian, Transportasi, Program Linier AbstractPT. TASS Engineering is a company engaged in the truck body. The company is working with a second party (contractor) in completing jobs to fulfill customer orders. Among its products, there are 4 types of products (Dump Truck, Subframe, Tilting, and Tanki Truck) whose job is submitted to 4 teams of contractors. The decision on job allocation is done by givingit  to the team that have alredy completed their jobs. This allocation method turns out to cost each team to work on the same type of product that is quite varied. Variations in the cost of work, of course, have an impact on variations in profits. It is necessary to determine the allocation of the type and amount of work that is right for each team so as to get the maximum profit. The optimum allocation result is the decision parameter for the combination of the amount of production of each product in addition to the capacity of each team and the processing time. For this reason research is needed which aims to 1) determine the optimum allocation of work, 2) determine the production target of each product to get the maximum profit. The work allocation is done by comparing the Hungarian Assignment method and the Transportation method to choose the minimum total cost. The optimum solution for the number of products produced to achieve maximum profit is done by the Linear Program. The results of the research findings show that 1) dump trucks were handled by 88% by team-1 and 12% by team-4; subframes are done by 39% by team-2, 26% by team-3, 35% by team-4; tilting is done by team-3, and truck tank is done by team-2; 2)the production target (sales target) to get maximum profit is to produce 73 units of dump trucks, 120 units of subframes, 29 units of tilting, and 33 units of tank trucks. This solution provides a profit increase of 0.9%.Keywords: optimum, Hungarian, Transportation, Linier Programming

scholarly journals Increasing life of pit dump truck motor-wheel gearboxes by introducing the monitoring of the actual technical condition

2021 ◽  
Vol 6 (4) ◽  
pp. 267-276
Author(s):  
A. A. Khoreshok ◽  
A. V. Kudrevatykh ◽  
A. S. Ashcheulov ◽  
A. V. Vinidiktov ◽  
L. I. Kantovich
Keyword(s):  
Technical Condition ◽  
Dump Truck ◽  
Mining Equipment ◽  
Quality Performance ◽  
Equipment Operation ◽  
Maintenance Service ◽  
Dump Trucks ◽  
Combination Of Methods ◽  
The Cost ◽  
Physical And Chemical

At present, Kuzbass coal strip mines pay great attention to improving quality performance of mining equipment operation, including reliability and durability of components and units. One of the ways of the performance improvement is decreasing number of unforeseen failures. To achieve this purpose a mine dump truck part diagnostics should be introduced into a maintenance service procedure. At the same time the process of diagnostics should not increase the machinery downtime, but effectively reveal a condition of motor-wheel gearboxes in the course of dump truck operation. The aim of the research is to increase the reliability and service life of motor-wheel gearboxes of large BelAZ dump trucks. Failure of a motor-wheel gearbox is a rare phenomenon, but the cost of a new gearbox can vary from 3.5 to 10 million rubles. That is why it is important to implement such methods of diagnostics, which allow revealing the condition of gearboxes in the shortest possible time and without disassembling corresponding units. Determination of the actual technical condition of motor-wheel gearboxes is possible by different methods: vibroacoustic; acoustic; thermal; physical and chemical analysis of spent operating materials. The studies showed that none of these methods can be used as a universal one. When justifying and selecting the most suitable method, different factors should be considered, including technological, or a combination of methods should be applied, which will reduce risks, but at the same time increase costs. It is necessary to develop a better diagnostic method based on the use of several methods simultaneously.

scholarly journals ANALISIS BIAYA DAN WAKTU BERDASARKAN ANALISA PRODUKSIVITAS ALAT BERAT PEKERJAAN TANAH GALIAN (PEMBUATAN PIT) PADA PROYEK INSTALASI PENGOLAHAN AIR LIMBAH

2020 ◽  
Vol 6 (4) ◽  
Author(s):  
RA Sri Martini ◽  
Sudirman Kimi ◽  
Sukma Mulya
Keyword(s):  
Soil Removal ◽  
Treatment Plant ◽  
Construction Workers ◽  
Cost Calculation ◽  
Heavy Equipment ◽  
Technological Advances ◽  
Efficiency And Effectiveness ◽  
Dump Trucks ◽  
The Difference ◽  
The Cost

Technological advances provide opportunities for construction workers to use heavy equipment as a substitute for manual equipment. Heavy equipment can be a solution to increase the efficiency and effectiveness of work implementation, which can be seen in the cost calculation or unit price.It can be seen that alternative 3 uses 2 units of Kobelco PC-200 excavators, 4 units of 5 m3 dump trucks, these alternatives have the smallest time difference to the original conditions in the field. Therefore, it is very time efficient and fast to process and costs slightly increases and results in fast and efficient workmanship. It can be seen for the difference in costs of - 28,905,973 (- 26%) and the difference in total working time of -25 hours (- 40%). Referring to the description of the calculation of the comparison between the original conditions in the field with alternative calculations, if a minus (-) result is obtained then the work is faster. So it can be recommended to use alternative 3 to carry out soil removal work in the Wastewater Treatment Plant project. Palembang, South Sumatra.

Six Sigma in education

2017 ◽  
Vol 25 (1) ◽  
pp. 91-108 ◽  
Author(s):  
Paul G. LeMahieu ◽  
Lee E. Nordstrum ◽  
Elizabeth A. Cudney
Keyword(s):  
Quality Improvement ◽  
Six Sigma ◽  
Work Processes ◽  
Content Type ◽  
Organizational Work ◽  
School Community Partnership ◽  
The Cost ◽  
And Control ◽  
Six Sigma Approach

Purpose This paper is one of seven in this volume that aims to elaborate different approaches to quality improvement in education. It delineates a methodology called Six Sigma. Design/methodology/approach The paper presents the origins, theoretical foundations, core principles and a case study demonstrating an application of Six Sigma in a school-community partnership in Milwaukee, Wisconsin. Findings The core principles underlying the approach are decreasing variability or unreliability in organizational work processes, eliminate waste or activity that does not add value to desired outcomes, identify defects and decrease their incidence, reduce the cost of work processes, and improve beneficiary/client satisfaction levels. The steps in this statistics-dependent method are design, measure, analyze, improve and control. Originality/value Few theoretical treatments and demonstration cases are currently available on commonly used models of quality improvement that might have potential value in improving education systems internationally. This paper fills this gap by elucidating one promising approach. The paper also derives value as it permits a comparison of the Six Sigma approach with other quality improvement approaches treated in this volume.

scholarly journals Improving the Performance and Quality of Processes by Applying and Implementing Six Sigma Methodology in Furniture Manufacturing Process

2019 ◽  
Vol 70 (2) ◽  
pp. 193-202
Author(s):  
Ľubica Simanová ◽  
Andrea Sujová ◽  
Pavol Gejdoš
Keyword(s):  
Process Improvement ◽  
Six Sigma ◽  
Cost Savings ◽  
Furniture Manufacturing ◽  
Mapping Process ◽  
Six Sigma Methodology ◽  
And Performance ◽  
The Cost ◽  
And Control

The main aim of this paper is to illustrate the application of selected methods and procedures in the implementation of the Six Sigma Methodology in the furniture manufacturing processes, specifically in the wood veneer pressing, to verify the application and to evaluate the benefits of using selected methods and procedures through a series of step DMAIC process improvement. The application of selected methods and tools within the Six Sigma Methodology, such as DPMO, efficiency and sigma levels, project charter, histogram of mistakes caused by the application of the adhesive, the SIPOC plot mapping process, reaction plans, Ishikawa diagram and control diagrams bring the system and clarity of measurable results into project management for process improvement and process change. The benefits of their use are the cost savings and performance improvement processes.

Reducing Material Waste Using Six Sigma in Printed Circuit Board Assembly

2007 ◽  
Author(s):  
Naji E. Gebara ◽  
Badih Jawad
Keyword(s):  
Six Sigma ◽  
Printed Circuit Board ◽  
Circuit Board ◽  
Printed Circuit Board Assembly ◽  
Printed Circuit ◽  
Circuit Board Assembly ◽  
Project Controlling ◽  
Key Steps ◽  
The Cost ◽  
And Control

Material waste in the Printed Circuit Board Assembly consist of parts and components that are purchased above and beyond what is required to complete a project. Controlling such material waste identified in this paper as Quantity Variance is in a direct relationship to minimizing the cost of variance that increases the profitability of each job in a low volume high mix production. This Quantity Variance occurs as defects at key steps of the manufacturing process. Six sigma is used to define, measure, analyze and control occurrences resulting in the need to purchase additional components for the completion of the order.

scholarly journals PERENCANAAN KEBUTUHAN ALAT BERAT PROYEK REKLAMASI PELABUHAN SORONG

2019 ◽  
Vol 12 (2) ◽  
pp. 108
Author(s):  
Diki Firmansah, Marjono, Johanes Asdhi P.
Keyword(s):  
Secondary Data ◽  
Unit Price ◽  
Dump Truck ◽  
Northern Coast ◽  
Container Port ◽  
Heavy Equipment ◽  
Port Area ◽  
Type Size ◽  
Reclamation Project ◽  
The Cost

One disadvantages of Sorong Port is not able to accommodate the incoming vessels, as the container port has been united with the passenger port. Therefore, the northern coast is to be reclaimed to provide more port area. To make this 50,000-m² reclamation project run smoothly, the use of heavy equipment must be appropriate in terms of type, size, quantity, and site situation. The purpose of thesis is to find out the type of heavy equipment needed, the number of equipment needs, and the cost of heavy equipment. The required secondary data of Sorong shop drawings, work specifications, material and work unit price of Sorong 2016 and heavy equipment specifications. The planning comprised embankment and reclamation works.The planning results of heavy equipment comprising 1 units of excavator on 39 work weeks, 1 units of excavator long boom on 5 work weeks, 70 units of dump truck on 39 work weeks, 1 units of motor grader on 13 work weeks, 1 units of wheel loader on 10 work weeks, and 1 units of vibrator roller on 11 work weeks; at a total cost of IDR 56,343,100,000.00 Keywords: reclamation, productivity, heavy equipment

scholarly journals The Harapan Jaya Cooperative Development Reviewed from the Cooperative Financial Capital and Business

2020 ◽  
Vol 9 (1) ◽  
pp. 71-80
Author(s):  
Munawar Thoharudin ◽  
Fatkhan Amirul Huda ◽  
Tedi Suryadi
Keyword(s):  
Secondary Data ◽  
Financial Capital ◽  
Dump Truck ◽  
Observation Data ◽  
Net Income ◽  
Cooperative Development ◽  
Heavy Equipment ◽  
Dump Trucks ◽  
Qualitative Descriptive ◽  
Capital Development

The purpose of this study was to find out how the Harapan Jaya Cooperative development in terms of cooperative financial capital and business. In financial capital, there are assets, incomes, and Net Income. While the business is from the business run by the cooperative. This study uses a qualitative descriptive method. In this study, the researcher acts as a data collector and as an active instrument to collect data. This research uses two data sources; they are primary and secondary data. Data collection was conducted by researchers using in-depth interviews, documentation and observation. Data analyzed using qualitative analysis, the validity of the data using the triangulation method. The Harapan Jaya Cooperative Capital development in this study was reviewed from the Solvency, Liquidity and Profitability Ratio. Overall shows good and excellent criteria. The development of the cooperative business is indicated by the addition of income from savings and loan units, management of plasma tubers, dump truck rental, beko heavy equipment rental, motor grader heavy equipment. In addition, business development is also seen from the addition of dump trucks and heavy equipment owned by cooperatives.

scholarly journals Problems of Operational Safety of Dump Trucks in Open Pit Mine

2019 ◽  
Vol 134 ◽  
pp. 01005
Author(s):  
Boris Gerike ◽  
Aleksandr Zacharov ◽  
Pavel Gerike ◽  
Yuriy Drozdenko
Keyword(s):  
Vibration Analysis ◽  
Open Pit ◽  
Signal Spectrum ◽  
Dump Truck ◽  
Vibrational Signal ◽  
The Road ◽  
Analysis Methods ◽  
Control Units ◽  
Dump Trucks ◽  
And Control

One of the risk factors for dump trucks drivers is the over-vibration on various parts and control units. This leads to the formation of high intensity of work. To search for the causes of over-vibration it is proposed to use vibration analysis methods. To search for the causes of over-vibration it is proposed to use vibration analysis methods in time when dump truck is not moving. This allows the escaping the influence of external factors such as like profile of the road, slope, etc. The analysis of the vibrational signal spectrum allows determining the type of defect with a high degree of reliability.

scholarly journals Distribution of Static Normal Reactions to Wheels of Open-Pit Dump Trucks Depending on the Longitudinal and Cross Sections of the Open-Pit Road

2019 ◽  
Vol 105 ◽  
pp. 03009
Author(s):  
Michail Dadonov ◽  
Alexander Kulpin ◽  
Oleg Ostanin ◽  
Erkin Suleimenov
Keyword(s):  
Rock Mass ◽  
Cross Sections ◽  
Normal Load ◽  
Operating Conditions ◽  
Open Pit ◽  
Dump Truck ◽  
Mass Transportation ◽  
Premature Failure ◽  
Dump Trucks ◽  
The Cost

Vehicle costs for rock mass transportation are more than 50% of total costs, among which 25 — 30% are tire costs. The average tire life in mining enterprises is lower than that the value recommended by production plants. The tire life of open-pit dump trucks is more dependent on the normal load on the wheel. The main factor in the change of the normal load is location of the wheel on the dump truck and the open-pit road’s section. Determination of the maximum loaded tire in different operating conditions will allow increasing the tire life and preventing its premature failure. The TKPH index (tire performance) recommended by tire manufacturers does not take into account the diversity of mining conditions and variations of sections of open-pit roads on different routes. The average load per trip is defined as movement of a loaded open-pit truck and an empty open-pit truck on a straight reach of a road. The proposed method for recording of redistribution of the load on the wheel allows making adjustments to recording of TKPH indexes and thereby effectively managing the tire life, which in turn will make it possible to more fully use the tire life, increase its reliability and reduce the cost of rock mass transportation.

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