Jurnal Indonesia Sosial Teknologi

Cause Analysis and Preventive Measures for Deterioration of Steam Turbine Lubricating Oil

Rikki Murtin — 2024-11-12

Lubricating the oil system of the steam turbine in the power plant is an important part of maintaining the normal operation of a steam turbine. The quality of oil directly affects the safe and stable operation of steam turbines. If the oil quality deteriorates, it is very easy to cause major accidents such as wear of steam turbine bearings, jamming of the speed control system, and even burning of bearings, failure of steam turbine speed control system leading to overspeed. This research method uses a literature review. In the operation of the power plant, it is common for lubricating oil to exceed the standard particle size and water content, and there are many reasons for this. This article analyzes the causes of lubricating oil deterioration and explains more specific preventive measures. Conclusion Deterioration in oil quality and excessive particle size can easily lead to serious consequences. Therefore, it must be controlled from the inspection of new oil entering the factory, sampling and testing, and monitoring of the operation stage, to improve the maintenance process.

Shopee E-Commerce Website Quality Analysis Based on User Perception Using the Webqual Method

Fatihatul Khairan — 2024-11-12

This study aims to analyze the quality of Shopee's e-commerce site using the WebQual method approach. Three main dimensions, namely usability, information quality, and service interaction, are used to evaluate the quality of the Shopee website from the user's point of view. This method measures users' perception of the main aspects that determine their experience in using the Shopee website. The results of the study show that although Shopee has succeeded in providing a responsive and informative platform, several areas need improvement, especially related to aspects of service interaction and the security of users' personal information. In conclusion, Shopee needs to optimize several important aspects to improve the user experience and strengthen its position as a leading e-commerce platform in Southeast Asia. Improved design and navigation of a more modern and intuitive interface can make it easier for users to navigate the platform. In addition, real-time updates of product information regarding stock and prices will help prevent user dissatisfaction. Shopee also needs to improve customer service, both with the addition of staff and technology such as advanced chatbots, to answer customer needs faster. Finally, increased security and transparency regarding transactions and protection of personal data will strengthen user trust in this platform. Through these efforts, Shopee is expected to be able to provide a better shopping experience and maintain the loyalty of its users in the midst of fierce e-commerce competition.

Analysis of Interest in Using Cryptocurrency as a Means of Payment in Indonesia

Rizky Hardian Adhinugraha — 2024-11-12

The purpose of this study is to find out whether cryptocurrencies can be used as a means of payment in Indonesia and also to find out how to grow interest in using cryptocurrencies in Indonesia. This is based on the convenience offered by cryptocurrencies. The research method used is a qualitative research method with a data collection method using semi-structured interview techniques. The data analysis method uses the analysis method according to Miles and Huberman. The results of the study reveal that Indonesia is currently still unable to use cryptocurrency as a means of payment. This is due to several key factors including regulatory unpreparedness and lack of cryptocurrency literacy for the public. The results of the study also revealed that an effective way to increase interest in using cryptocurrencies in Indonesia is to educate about cryptocurrencies and increase financial literacy to the public.

Exhaust Temperature Control of Double Tail Flue Boiler

Wang Jinsong — 2024-11-12

According to the structural characteristics of a double tail flue boiler in a power plant, the cause of the fault was found through objective theoretical analysis, and corresponding improvement measures were formulated. The problem of abnormally high boiler exhaust temperature was effectively solved, the economy and safety of boiler operation were improved, and the normal operation of the boiler was ensured.

Common Faults and Maintenance of Three-phase AC Asynchronous Motors

Guan Yu — 2024-11-12

Application of three-phase AC asynchronous motor in industrial applied in many aspect following function that need to use. In operation use, many troubles may cause motor equipment not to operate or break down by the motor itself or caused by a system including protection, control system, interlocking device, and others causes. Aiming at the actual situation that three-phase AC asynchronous motors are widely used and have a high failure rate, this paper focuses on analyzing the common failures and abnormal phenomena of three-phase AC asynchronous motors and their main causes. This Research Method is reinforced by the actual monitoring of the locality where the equipment is installed. At the same time, some specific preventive measures and treatment methods are proposed to timely discover and eliminate the potential accidents of motors as much as possible and ensure the safe operation of motors. In conclusion, the aspects that need to be considered are one by one. There are 2 general classifications to determine possible faults, the first is about the operating conditions that the equipment motor should monitor and take the scheduled data to know about the actual conditions including power quality, temperature rise, vibration analysis, and physical abnormalities during the operation of the unit.

Adaptation of the Five-by-Five Resilience Scale in Indonesian

Syafira Ainnur Rahmah — 2024-11-09

Resilience is the ability of individuals to be able to adapt and rise from difficult conditions or situations. The Five-by-Five Resilience Scale is a measurement tool developed by DeSimone et al (2016) to measure individual resilience. There are five protective factors of resilience, namely adaptation, emotional regulation, optimism, self-efficacy and social support. This research aims to adapt the Five-by-Five Resilience Scale into Indonesian. This research was conducted because there has been no testing of the Indonesian version of the Five-by-Five Resilience Scale. The subjects involved in the study were 267 subjects with an age range of 18 - 25 years who were domiciled in Indonesia. Based on the results of psychometric testing through Exploratory Factor Analysis (EFA), 4 factors were obtained that build the Five-by-Five Resilience Scale. The results also show that the Five-by-Five Resilience Scale has a correlation with other measuring tools in convergence validity testing. The reliability test results show that the dimensions on the Five-by-Five Resilience Scale as a whole have a reliability > 0.7.

Increase The Percentage of Coal Conservation Deposited in ROM Drainage Areas

Aifah Aifah — 2024-11-15

The research aims to increase the conservation percentage of trapped coal in the ROM A1 drainage area from February to June 2024 by improving fine coal management and adding value to the conservation of PJP. This study also seeks to reduce penalties from fine coal blending into sellable products and minimize environmental pollution in the ROM A1 area. The study employs a descriptive method, focusing on implementing coal conservation in drainage areas by determining the scope of each conservation object. Root cause analysis using a Fishbone diagram was used to identify key improvement strategies for increasing coal conservation percentages. Initial observations in the ROM A1 drainage area revealed 6,829 tons of unpreserved fine coal, primarily due to rainwater runoff. The results showed that with proper implementation of conservation techniques, including the installation of fine coal traps and the centralization of fine coal in collection points, the conservation rate improved from 0% to 62% by April 2024. In tangible terms, 83 tons of fine coal, worth IDR 26,434,928, were saved, contributing to both environmental conservation efforts and economic benefits for the company. This study highlights the importance of continuous coal conservation efforts, especially in mining operations where environmental and financial impacts can be significant.