ANALISIS PENGENDALIAN KUALITAS MENGGUNAKAN METODE SIX SIGMA DALAM MENINGKATKAN KINERJA OPERASIONAL DIVISI FIXED PLANT MAINTENANCE DI INDUSTRI PERTAMBANGAN PT BERAU COAL

Penelitian ini bertujuan untuk mengetahui peningkatan efektivitas mesin coal crusher dengan menggunakan analisis deskriptif dan kuantitatif metode six sigma. Penggunaan Overall Equipment Effectiveness dan Six Big Losses untuk menentukan nilai Overall Equipment Effectiveness dan faktor dominan yang menyebabkan rendahnya kinerja mesin atau peralatan. Proses penerapan small group activity sebagai bagian dari Total Productive Maintenance dengan penerapan fase DMAIC dari analisis Overall Equipment Effectiveness (OEE), Six Big Losses, dan Fish Bone Diagram untuk menganalisa penyebab masalah yang menghambat kinerja mesin dan peralatan serta signifikansi peningkatan kinerja operasional di departemen FPM. Berdasarkan pengolahan data pada Coal Crusher dengan metode OEE dan Six Big Losses faktor yang paling dominan menyebabkan rendahnya kinerja mesin adalah Reduced Speed Losses dengan persentase 58,82% dan Equipment Failure Losses dengan persentase 62,21% pada mesin Coal Crusher yang mempengaruhi efektivitas dan produktivitas mesin tersebut. Menggunakan diagram pareto untuk menganalisis data losses yang ada sehingga akar permasalahan dapat ditemukan. Selanjutnya dengan analisis fish bone diagram didapatkan saran-saran langkah pencegahan dalam mengurangi jumlah losses time. Langkah perbaikan sistem yang dilakukan di Departemen FPM dengan penerapan Small Group Activity sebagai control secara berkelanjutan memberi peningkatan produktivitas terhadap kinerja Coal Crusher di akhir periode Desember 2020 yaitu diperoleh rata-rata nilai Overall Equipment Effectiveness (OEE) yaitu sebesar 87% dan telah memenuhi nilai standar dunia 85%. Dengan adanya peningkatan kinerja diharapkan kegiatan proses produksi dapat berjalan efektif, efisien, serta energi dapat digunakan secara optimal.

The role of land management in increasing the income of Private Forest farmers in Central Lombok Regency

One of the success indicator of private forest farming is an increase in farmers’ income, which is indicated by the large contribution of income from private forests. The size of the income is influenced by several factors, including the pattern of private forest management which will determine the quality products of private forests. However, currently, most of the private forest farmers have not placed the aspect of land management as the main factor determining the success of farming in private forests. This research is conducted to determine the role of land management on the income of private forest farmers in Central Lombok Regency. The research was conducted in three private forests in Central Lombok Regency, namely Pemepek, Setiling, and Sepakek Villages. The method used is interviews using questionnaire to 45 respondents who are selected purposively. The object of observation is land management which include plant maintenance, and harvesting; and farmers’ income from private forest and non-private forest. The data analysis was carried out in a descriptive qualitative manner. The results showed that in general, land management carried out by private forest farmers had not been able to increase income from private forests. However, farmers who carry out crop maintenance in the form replanting are able to produce a higher income than when farmers applied other land management activity. The combination of land management activity will improve their income. The more intensive land management, the higher the income will be obtained.

Pemanfaatan Limbah Plastik Sebagai Media Tanam dengan Metode Vertikultur Hidroponik untuk Memaksimalkan Fungsi Pekarangan di Desa Pringgabaya

Sustainable Food House is a program to optimize the use of environmentally friendly yards, and is designed to help meet family quality and nutritional needs, food diversification based on local resources, plant conservation, and increasing household income through non-rice based household creative industries for local food processing. . The objectives of this community service program (1) increase knowledge and skills, awareness and motivate the people of Pringgabaya Village, especially the group of housewives in the use of vacant land or yards, (2) apply some simple techniques for planting yards and their maintenance that can be implemented effectively. easy for the people. The types of plants that are planted in the yard are types of vegetables that can support daily needs and the rest can be sold. Methods of activities carried out include socialization, training, and practice starting from land preparation, maintenance, development, implementation and demonstration. This activity is able to encourage and increase the awareness of the group of housewives in utilizing the yard, especially using the verticulture method of hydroponics, starting from seedling to plant maintenance.

Intentionally Deadheading SAGD ESPs - An Unconventional Approach to Improve Run Life

SAGD ESPs run at the highest motor temperatures current technology allows. However, they cool very rapidly when shutdown. High cooling rates promote motor oil volumetric contraction, eventually leading to wellbore fluid ingress and short-circuited motors. The Paper presents successful field tests designed to decrease ESP cooling rates by inducing controlled deadheads, rather than shutting down ESPs. Various extended deadhead field trials (up to 70+ days duration) validated the approach, while confirming that no deadhead related ESP damage was induced. ESP temperature changes were measured using fiber optics strings installed as part of the usual completion in 60+ wells, during a four week-long field-wide plant maintenance turn-around. While cooling rates varied somewhat from well to well, they all showed very similar behavior and were very well fitted with a log-normal distribution, R2factor > 95%. Most ESP temperatures decreased between 50°C to 120°C in a week. This data was used as a general baseline to support the deadheading field trials. An ESP was fitted internally with an RTD at the base of the motor and externally with a clamped fiber optics string. This ESP was operated normally at 55 Hz for a few months. An 8-hour shut down test established an initial base line cooling rate of 6.6°C/hour. Subsequent 6-hour deadhead tests at 30Hz and 45 Hz showed decreased cooling rates of 4.0°C/hour and 2.2°C/hour, respectively. This result clearly established the potential to deadhead at different frequencies to obtain different lower cooling rates. Finally, two extended deadhead tests (3 and 10 weeks in duration) were executed to help determine if it was possible to induce damage in SAGD ESPs by deadheading, as is usually the case in most non-thermal applications. These ESPs operated normally after the extended tests and one was dismantled upon failure, looking for any signs of deadhead damage. Results presented show that deadheading SAGD ESPs provides the opportunity to safely minimize ESP thermal cycles, which could lead to a significant improvement in ESP run life.

Can the Four-Hour Installation Dwell Time Be Reduced?

A correct bolted flanged joint tightening procedure includes retorquing to restore short-term creep relaxation and embedment losses; the ASME PCC-1-2019 Tightening Method recommends a minimum of 4 hours of dwell time before retightening the bolts. It is known that in an industrial plant, maintenance costs come mostly from process downtime in addition to the labor and the tools necessary to perform the operation. Reducing the retorque waiting time would make installation quicker and avoid additional — and unnecessary — costs, returning the plant to revenue operation sooner. This paper explores whether different gasket styles should have the same dwell time between the installation and retorque, and what would be the dwell time to minimize plant downtime without compromising the gasket performance. The study was performed using a test rig based on a 4” class 300 ASME B16.5 flange equipped with eight strain-gauged bolts that correlates bolt elongation with applied stress. Four dwell times (15min, 1h, 4h and 24h) and different gasket styles and materials such as PTFE, CFG and metallic gaskets were tested. Additionally, two ASME PCC – 1 installation methods were compared and reported: Legacy Cross-Pattern Numbering System and Alternative Assembly Pattern #3. The former is the typical method for flanged joint tightening operations, while the latter offers a simpler, faster execution.

Peningkatan Kualitas dan Kuantitas Biji Kakao Melalui Intensifikasi Perawatan Kakao, Introduksi Alat Budidaya, dan Pengering Sistem Hybrid

Putat village, Patuk district, Gunung Kidul regency is one of cocoa production center in Yogjakarta. Cocoa bean products in this region have been marketed not only in Yogjakarta but also several areas in Indonesia. In order to support production continuity of cocoa bean productions, to date the farmers face obtacles in cacao plantation maintenance and cocoa beans drying. Thus, this activity aimed to increase quality and quantity of cocoa beans through maintenance intensifications of cacao and introduction of cacao cultivation equipments and cocoa beans drying hybrid system. Partner in this activities were Kelompok Tani Kakao Sido Dadi and cocoa dan chocolate production industry “Joglo Coklat” located in Patuk, Gunung Kidul, Yogjakarta. The activities were conducted in several stages including 1) basic data collection, 2) socialization of cacao plantation maintenance, 3) socialization of cocoa beans drying, 4) introduction of cultivation equipments, 5) contruction of drying chamber, 6) handover of equipment, and 7) evaluation of parnter response. The results of the activity indicated that the provision of information and the introduction of equipment for cacao plant maintenance activities had a positive impact on partners. From the questionnaires, the partners stated the benefits of this activity and the desire for sustainable activities. The introduction of maintenance equipment and cocoa beans drying made it easier for farmers to carry out cultivation, harvest and post-harvest activities of cocoa beans so would be able to improve the quality and quantity of cocoa beans.

SAYURAN ORGANIK LAHAN KERING UNTUK PARIWISATA DI DOMPU

This science and technology application was carried out to educate partner farmers (1) “Mada Kabuntu Farmer Group" and (2) "Sinar Rinjani Farmer Group" to increase the production of organic vegetables in dry land. To achieved this goal, training activities and plot demonstration have been carried out. The training method used was the adult education method with participatory techniques. The training participants were members of the farmers group "Mada Kabuntu" and "Sinar Rinjani". Training activities include pre-test, delivery and explanation of modules (with LCD and props), discussion and question and answer. Plot demonstrations and organic vegetable cultivation practices were carried out on farmers' land. Farmers were participatively involved jointly from planning, implementing and evaluating of harvest yield. The activity results showed that the farmers participating in this program were very responsive to the development of organic vegetables on dry land. The participating farmers were actively working together to carried out all phases of activities from training, demonstration plots from planting, plant maintenance and harvesting. The results of these activities indicated that there has been a technology transfer process for developing organic vegetables in the dry land Dompu district.

School Plant Maintenance and Students Academic Performance in Public Secondary Schools in Bayelsa State

This study investigates school plant maintenance and students’ academic performance in public secondary schools in Bayelsa state. The correlational survey research design was adopted for the study. The population of this study was eighty-two thousand, five hundred and eighty-two (82,582) students of the 191 public secondary schools in the eight (8) Local government areas of Bayelsa state. A sample of 300 students was drawn from 12 schools, having a total population of 5120 students was sampled for this study. The instrument that was used for data collection in this study was a self-structured 4-point Likert Scale Modified questionnaire titled: School Plant Maintenance and Students Academic Performance in Public Secondary Schools Questionnaire. (SPMSAPPSSQ). A test–retest method was used to ascertain the reliability of the instrument. The two sets of scores were computed using Pearson product moment correlation to determine the reliability index value 0.72 while the hypothesis is at 0.05 level of significance. The findings of this study revealed that maintenance of a blackboard helps the students to see clearly, thereby enhancing their academic performance; the maintenance of ICT building enables students to take part in ICT classes effectively and that steady maintenance of the library makes it possible for reliable and current books to be available for students to study widely. The study concludes by establishing the relationship between school plants maintenance and students’ academic performances in public senior secondary schools in Bayelsa State and recommended that government and schools board should often investigate the level of fitness and stability of school plants and embark on renovation and replacement of dilapidated and worn-out facilities in order to promote students’ academic performances.