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One of the impacts of the industrialization era is the use of plastic products. The advantages of plastic products are that they are light and strong and resistant to corrosion, can be transparent, can be colored, do not experience decay and most importantly they can function as an insulator so that they can replace wood and metal products that have been used for years. In the manufacturing industry the tools used to make products from plastic in the production process use injection molding. As a result of use during the production process and the lack of handling during use, this mold can be damaged which results in defects in the product. This research was conducted to obtain information about product defects that often occur due to damage to the mold as well as in terms of material and manpower skills in the plastic injection molding process. From the results 50 of data collection in 2019, it was found that the product defects that occurred related to the damage to the mold were shrink marks with a percentage of about 40.3% 11% Short Mold. Therefore, it can be concluded that the product defects that often occur due to mold damage are Shrink Mark and Short Mold which are mostly caused by temperature and pressure settings as well as unstable cooling of the molding and accompanied by a large amount of melted material which will be injected into the cavity of the molding machine beyond the capacity. ideally. From the results, it is found that the value of R-sq (adj) is 99,978, and the resulting main effect is 9.44457 [ABSTRACT FROM AUTHOR]

In the past, many areas that were once water suction areas have become residential areas, shopping malls, offices and other commercial centers. When it rains, all the water flows directly into the river, and a little bit is absorbed by the soil because it has been covered by the cement casting. This increases the water flow in the rivers of Jakarta. The focus of this research is to improve the performance of flood pumps. Observing the drainage of (A) River and (S) River, we compare it with the pump performance of the (A) River gate. By using the statistical software tools included in the Minitab program, it helps to obtain faster and more accurate results. Normality test, Gage R&R, capability analysis, Anova and other variance test, and two-sample T test are a series of tests performed in this study. In the improvement part, design of experiments (DOE) will be carried out. The pump in this study is the second sample of the three pumps provided by (A) Pump House. The Sigma level before repair was 2.27σ, and after repair it was 5.91σ. This has had a major impact on improving the expected performance of the flood pump, enabling it to cope with the increase in water flow in the coming years. [ABSTRACT FROM AUTHOR]

The Importance Performance Analysis (IPA) method is an appropriate tool for analyzing each product attribute which is its strengths and weaknesses, as well as determining the scale of preference of customer needs for the product. The objective of this research is aluminum window products by conducting a survey of 79 customers of aluminum window products using Slovin formula with 90% confidence level.the IPA matrix was applied to see the importance of focus on customer satisfaction needs. As the results, the validity and reliability tests on the performance indicators show the value of which is more than 0.1864 and cronbach alpha value 0.949, where the number is said to be eligible because it has met the specified conditions, while the importance indicator shows the value as more than of 0.1864 and Cronbach alpha 0.873. The result has shown that to be feasible because it has exceeded the minimum limit. In the Cartesian diagram the processing results of the IPA method show that there are 7 attributes that are the main priority to be improved, namely non leaking windows, airtight windows, can be waterproof on high surfaces (installed in tall buildings), can be wind resistant when installed in tall buildings, does not fall when withstanding wind pressure, aluminum profile material mixture is better, the price is more competitive. [ABSTRACT FROM AUTHOR]

In 2019 the agricultural sector contributed 1.81% to Indonesia's economic growth, this provided an opportunity for the automotive rubber parts industry to develop agricultural products, namely rubber crawlers for combine harvester machines. Based on internal trial data from January - September 2019, the highest defect in rubber crawler products is a joint crack by 90%, where this defect is caused during the curing process in rubber crawler production. By using the Six Sigma methodology and using the DMAIC (Define-Measure-Analyze-Improve-Control) cycle, can implement improvement with FMEA, and the result is the Sigma level increased from 1.36 to 5.76 with a cost saving of IDR. 621,000,000 [ABSTRACT FROM AUTHOR]

The urgent need for reductions in greenhouse gas (GHG) emissions continues to grow. Countries worldwide, including Indonesia, have started investing large amounts of resources into new renewable energy sources. Biomass co-firing can play an important role in achieving these new renewable energy objectives. It has the potential to reduce the potential environmental impacts associated with fossil fuel combustion. In the co-firing process, it is possible to reduce GHG emissions by replacing some coal with biomass during the combustion process. This article aims to identify barriers and drivers in implementing biomass worldwide through a literature review with a bibliometric analysis approach. In addition, this article will investigate the existing co-firing plants in Indonesia with the availability of available biomass resources in the country associated with the barriers that have been successfully identified. This article is very important for the development and utilization of biomass energy to generate recommendations and future strategies for biomass utilization. It is also useful for researchers to select future areas of research. Keywords [ABSTRACT FROM AUTHOR]

Indonesia's oil production from year to year has decreased. The decline was because around 90% of the total oil production was produced from fields that were more than 30 years old, so a large investment was needed to contain the decline. The Java Sea Block is one of the oldest major blocks supporting Indonesia's oil and gas production with the production of 32,000 Barel Oil Per Day (BOPD) of oil and 167 Million Metric Standard Cubic Feet Per Day (MMSCFD) of natural gas, which has been operating since 1971. ZU Flowstation is one of the production fields that has been operating since 1984 with a production of 2000 – 2300 BOPD, has 24 artificial lift / Electrical Submersible Pump (ESP) wells with different characteristics. Production results fluctuate every year. This is due to the age of the old wells so they are not able to produce more oil. This study aims to maximize production results on the operating system by adjusting the frequency of the Variable Speed Drive (VSD) automatically. The approach used is the Optimization with Binary Programming method. The results showed an increase in production from 24 wells by 356 BOPD or 3.56%. [ABSTRACT FROM AUTHOR]

The garment industry, especially the knitted socks industry and the like, experienced a decline in production due to defects that did not meet the target. This study aims to determine the leading causes of dominant defects, increase the sigma level, and propose improvements to be included in the KPI method so that the relevant department can control it using the Define Measure Analyze Improve Control (DMAIC) approach. This study found that the dominant factor causing the socks defect was the inappropriate linking needle at 504 RPN, the yarn hardness was varied at 441 RPN, and the thread clumps cutter was 384 RPN, the sock that went straight into the plate was 294 RPN. All causes of the problem are taken corrective action, and as a result, the level of sigma has increased from sigma 3.7017 before improvement to sigma 3.9614 after improvement. To control the sigma level, it is proposed to be included in the Key Performance Indicator (KPI) so that the knitting department can control and be enthusiastic in continuous improvement. Furthermore, this will affect the results of the monthly defect percentage being reduced from 11.08% to 5.54%, with a target of 7% on the Lonati Knitting machine. [ABSTRACT FROM AUTHOR]

The volume of car sales from time to time continues to increase (Gaikindo, 2020) so the need for supporting spare parts will also accompany it, both as an OEM (Original Equipment Manufacturer) supply in the car industry and to direct users as replacements. Tires are one of the important components, because the movement needs a rotating wheel as the means so that the tire manufacturing industry remains a profitable business. The curing process in the manufacture of tires is an obstacle to increasing the productivity of tire manufacturing, with an average OEE value of 75.86%, still far from the global company level target of 85% and the company's target of 89%. To increase the OEE value, start with the measurement of six big losses followed by a Pareto diagram to find the priority of the problem and the root of the problem using a fishbone diagram. The machine problem is fixed with the TPM program on the machine with the lowest OEE value until Autonomous Maintenance is running, then duplicating it. The FMEA method was used to solve the Rate of Quality problem so that an increase in the OEE value was 89.88% at the end of the study. [ABSTRACT FROM AUTHOR]