IPTEK Journal of Proceedings Series
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Lean Mining Analysis in Gold Mining Use Waste Assessment Model
Get PDFThis research identifies non-value added activities and minimizes waste in the production process at a gold mine. Problems that occur include the presence of waste defects in the form of choke ore materials, mismatches in dore bullion printing, and equipment damage. Then the waste waiting caused by low-level bin ore and the presence of ponding during leaching. In addition, there is also waste over processing in the form of carbon regeneration and transportation processes in the form of altered and distant ore transportation distances. The occurrence of waste can be reduced/eliminated using the Lean Mining approach which is a method to streamline the process by eliminating/reducing the presence of waste in the mining process. Identify waste using the Waste Assessment Model (WAM) tools. The results of the analysis show that the highest waste rating is a defect, motion, waiting, and process with successive percentages of the largest i.e. 20.75%, 18.42%, 17.57%, and 14.36%. From these results then recommendations for improvements that can be proposed are controlling the size and composition of ore-sized mixtures, increasing the efficiency of the crusher using TPM analysis, optimizing maintenance, making machines/systems automatically filling gold solutions, and making standardized wor
Application of Bioclimatic Architecture Concept in Novotel Suite Surabaya
Get PDFThe development of technology and industry in both developed and developing countries contributes to improve human life for the better. However, it causes an increase in energy consumption and environmental damage which produces global warming. In Asia, according to the data of ASEAN Center for Energy (ACE), 48% of global warming is generated by buildings. This phenomenon is very influential if it occurs in big cities. One of the ways to respond to this phenomenon is to apply sustainable architecture (bioclimatic architecture). Bioclimatic architecture is an architectural concept related to nature and its environment. In Indonesia, the city of Surabaya is the second-largest city. Surabaya is currently envisioned to be a green and smart city, in order to respond to the issue of global warming which currently becomes the center of discussion of all parties. Surabaya City is the second-largest city in which the real estate/property develops very rapidly, especially in commercial building such as hotels. In response to this, this study aimed to determine the application of the concept of Bioclimatic Architecture in one of the buildings in the city of Surabaya, namely the Hotel. The paradigm used in this study is the postpositivist paradigm. A case study was used as the research methodology with field observation techniques to find out whether the Hotel Novotel Surabaya applies the concept of Bioclimatic architecture. The result showed that Novotel applied the Concept of Bioclimatic Architecture into the buildings with a percentage of 94.3%
Operational Risk Management Design In The Indonesia Mining Growth Program (P3I) Using House Of Risk Method
Get PDFThe Indonesia Mining Growth Program (P3I) is a development project activity for nickel Mining Enterprise and Processing Plant in the "X" Region in Sulawesi. This research will design a risk management framework for P3I by implementing Enterprise Risk Management (ERM). In this study, the method is used to analyze the potential operational risks that exist in P3I namely the House of Risk (HOR) model. The results of the identification of risk events in the operational business processes of P3I found 25 risk events divided into each business process, namely 8 risk events in the mine planning process, 7 risk events in the design implementation process, 8 risk events in the production process, 1 risk event in the product delivery process and 1 risk event in the process of returning waste from Processing Plant. Thus, the results of the identification of risk triggers (risk agents) found 23 risk causes (risk agents). The result of the Aggregate Risk Potential (ARP) recapitulation is an output calculation based on the HOR model phase 1, there are 7 top-ranked risk agents since it is considered to be able to hamper the company's goals. Thus, in determining the preventive actions, 17 preventive actions were obtained, which were then put into the HOR phase 2 model to rank the most effective prevention measures based on cost and resources
Quality Improvement of Overhaul Maintenance Service using Servqual and Quality Function Deployment Method Case Study in PT. Pembangkitan Jawa Bali (PJB) UPHT Gresik
Get PDFElectricity is the right of every person guaranteed in the 1945 Constitution, it must be realized in the form of providing electricity supply for the community. Electricity generators in Gresik are one of the power suppliers for industries and communities through the distribution managed by one of the electricity distributor in Indonesia. As time goes by, the plant needs to do a planned maintenance called overhaul. This research aims to improve the quality of overhaul maintenance service to one of the generators that exist in Gresik. The other goal is to know what service factors that affect the level of customer satisfaction in accordance with customer expectations based on service priority variables. Measurement of service quality of overhaul maintenance is done by combining ServQual method and Quality Function Deployment (QFD) method
Synthesis of Composite Graphene/ Fe3O4 by Electrophoretic Deposition Using Pulse Direct Current
Get PDFComposites Graphene/Fe3O4 have been successfully synthesized by the electrophoretic deposition method using pulse direct current (PDC) on a nickel foam substrate. In this study, we synthesized graphene and Fe3O4 separately before the two materials were composited. We synthesize graphene from coconut shell charcoal and synthesize Fe3O4 from pure iron. Graphene and Fe3O4 which have been formed, are dissolved with demineralized water as a dispersing medium so that a solution of 1.5 mg / mL is obtained which is then compiled layer by layer on the surface of the substrate with variations in deposition time of 10 to 30 minutes at room temperature. This aims to determine the effect of deposition time on the formation of graphene/Fe3O4 composites. The results showed that the use of PDC was able to precipitate graphene/Fe3O4 composites on the surface of the substrate. The use of longer deposition time, results in more graphene/Fe3O4 composites which adhere to the substrate surface. This result is also supported by XRD testing which shows the longer the deposition time, the diffraction peaks appear sharper
The Effect of Financial Incentives, Organizational Commitment, and Job Satisfaction on Employee Performance
Get PDFOrganization or business performance always have close relation with its own member or employee performance and productivity. Most of them only focus on raising the wealthy of its member by giving financial incentives hoping it will reflect with significant improvement of member performance. But in some case giving the incentives not always bring significant increase to member productivity. This study was made with the aim to determine the effect of financial incentives, organizational commitment, and job satisfaction on employee performance. This study uses quantitative study. Data collection procedures used in this study are structured data collection. The population used is 10 persons of installation and maintenance employees of PT. KONE Indo Elevator throughout Indonesia that has implement some financial incentive to boots up their employee performance. The result of the study was financial incentives and job satisfaction have positif and significant effect to employee performance while organizational commitment not having signifficant effect to employee performance
Application of Value Stream Mapping on Operating Project Business Process at Nickel Mining Industry
Get PDFThis study investigated the usage of manhours against project cost impact in the business process of capital and operating project in mining industry. The case study in this study is nickel mining company in Indonesia. The waste identification and elimination are used on the business process operations and capital project delivery system using lean thinking in project management and Analytical Hierarchy Process (AHP). The study results shows that in current business process state, 95% project expenditure in case study on 2019 was spent for capital project and 5% for project operations. This results of this study is quite different with the manhours spent each on operating and capital project. In 2019, both the Capital Project Management and Engineering Services department spent 70% of their manhours on Capital Project and 30% on Operating Project. It shows that in managing 5% of their project budget, the company’s case study had to spent 30% of their project team manhours. With the proposed business process, the company’s case study should be able to optimize their manhours usage proportionally to the project cost impact
Analysis of Improving The Service Quality of Professional Cooperation in “XZY” Higher Education Based on Servqual, IPA and QFD
Get PDFThe Status of Legal Entity State Higher Education (PTN-BH) at the Institut Teknologi Sepuluh Nopember (ITS) gives full autonomy to the management of higher education. For ITS to be able to innovate in exploring revenue generators, Business Development and Management Agency (BPPU) was formed which functions to raise, manage funds, and develop business units. Professional cooperation as one of the most dominant ITS business unit in contributing ITS revenue. BPPU as the administrative center for professional cooperation services always try to provide excellent service, but there are still complaints about these services related to speed and accuracy. To analyze the level of quality of professional cooperation services, this research uses the Servqual, Importance-Performance Analysis (IPA) and Quality Function Deployment (QFD) methods. Servqual is used to analyze the gap between perception and customer expectations. The IPA method is used to measure the performance satisfaction expected and received by customers. And the QFD method is used to design priority strategies for improving service quality according to customer desires and technical capabilities by internal managers of professional cooperation. Servqual analysis results show the greatest gap between the perception variable and customer expectations, namely Em1 (understanding specific needs), Em2 (clarity of procedure), Rs2 (responsive service capability), and As3 (accuracy of cooperation services management). The results of the IPA analysis show that the variables in the quadrant A are the same as the results of Servqual Analysis which also have high priority to be handled, namely Em1, Em2, Rs2, and As3. In QFD analysis, these variables become customer requirements (whats) associated with technical responses (hows) obtained from internal BPPU management, and according to the house of quality diagram, the priority sequence of technical response is obtained, the priority of the technical response can be applied internally by BPPU so that FGDs are carried out, with the hope that a strategy for improving service quality can reduce complaints from professional cooperation customers
Analysis of Customer Satisfaction in Construction Companies Using QFD Method
Get PDFThe study adapted the QFD model as main framework for analyzing service quality by using of service quality dimensions (tangibility, reliability, responsiveness, assurance, and empathy. The research used the questionnaires that were distributed between twenty respondents who are the consumers of that company. The survey analyzed the consumers’ needs of houses and the ways for improving the quality of services. The outcomes of the study display that the top priority for customer satisfaction, such as name the suitability of the project report with actual conditions in the field; Ability to complete within deadlines; Service level after completion; Application of work procedures and instructions for completing projects; Project workers' expertise in using equipment in the field; Level of trust in communication follow-up; Discipline and compliance with agreed project schedules and Fulfillment of construction functions. While the technical response given by the company to increase consumer satisfaction are Monitoring the results of reports with the field by Project Control; Training of contractor field supervisors; Monitoring the communication system periodically; Training in the use of work equipment; Periodic S curve monitoring; Improved technical communication between the person in charge with the representative of the employer; Periodic SOP briefing; and Giving reward and punishment to Project Managers and Field Teams
Design of Resources Monitoring and Controlling System on Aircraft Maintenance Project in XYZ MRO
Get PDFMaintenance Repair and Overhaul (MRO) XYZ is a company engaged in aviation / aviation, especially in aircraft maintenance. MRO XYZ can work on the maintenance of several types of aircraft and its components in accordance with the certification and permits owned by MRO XYZ. The vital aspects that must be regulated in an aircraft maintenance project include the engineer involved in the maintenance process and the manhours calculation system who must be able to explain every detail of the work on an aircraft maintenance project. In addition, other resources such as consumbale material and raw material must also be monitored and controlled, so that management team can obtain COGS as optimal as possible in the project and profitability can increase. This research was built to provide solutions to the aircraft maintenance process stakeholders in meeting vital information needs that must be continuously monitored and based on this information, the system built will be able to control the ongoing maintenance process of the aircraft, in accordance with regulations