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"Pengukuran potensial korosi untuk suatu struktur yang tertanam di dalam tanah rutin dilakukan untuk memelihara struktur agar tidak terserang oleh korosi. Untuk jarak struktur yang sangat panjang, pengukuran potensial korosi yang ada sekarang masih membutuhkan waktu yang lama dan ini merupakan kekurangan dalam hal efisiensi waktu. Pada penelitian ini, dirancang sebuah instrument pengukur potensial yang menggunakan mikrokontroler ATMega8353 yang diharapkan dapat melakukan pengukuran secara bersamaan di banyak tempat sehingga dengan begitu waktu yang dibutuhkan untuk mengukur potensial korosi suatu struktur yang panjang juga akan semakin sedikit. Penelitian juga dilakukan dengan mengamati hubungan antara potensial korosi dari logam dengan kondisi tanah seperti pH dan resistivitas tanah. Hasil penelitian untuk potensial yang diukur dengan mikrokontroler ATMega8353 berbeda dengan hasil potensial dari multimeter digital yaitu potensial logam yang diukur dengan mikrokontroler ATMega8353 lebih rendah dari potensial logam dengan multimeter digital. Hubungan antara potensial logam yang tertanam di dalam tanah juga berbanding lurus dengan resistivitas tanah. Dengan besar resistivitas yang paling kecil pada daerah di sekitar danau, potensial logam pada lokasi ini juga paling kecil. Sedangkan pada lokasi di sekitar Departemen Metalurgi dan Material Universitas Indonesia, potensial logam lebih positif dari lokasi di sekitar danau dengan semakin besarnya resistivitas dari lokasi di sekitar danau. Dari hubungan pH dan potensial, logam telah mengalami proses korosi yang di lihat dari diagram pourbaix.

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The measurement of corrosion potential for a structure that is embedded in the ground is done to maintain a regular structure that does not attack by corrosion. Distance for a very long structure, the measurement of corrosion potential that is now still need a long time and this is the lack of efficiency in terms of time. On this research, an instrument designed to measure potential use mikrokontroler ATMega8353 that are expected to perform measurements simultaneously in so many places with the time needed to measure the corrosion potential of a long structure that also will be less. Research is also done with the relationship between the corrosion potential of metals with soil conditions such as pH and soil resistivity.

Research results to the potential measured with mikrokontroler ATMega8353 different from the potential results of a digital multimeter that is potentially measured with a mikrokontroler ATMega8353 lower potential of the metal with a digital multimeter. Relationships between the potential of metal embedded in the ground is also proportionate to the soil resistivity. With large resistivity the most on a small area around the lake, the metal potential at this location is also small. While on location in the vicinity of the Department of Metallurgy and Materials, University of Indonesia, the metal more positive potential of the location around the lake with the size of the resistivity's location around the lake. Relationship of pH and potential, have experienced the process of metal corrosion in the view of the pourbaix diagram."

"[ABSTRAKTesis ini bertujuan untuk menjelaskan bagaimana penerapan Six Sigma di PT SKF Indonesia serta melakukan perbaikan proses bisnis di area produksi PT SKF Indonesia dalam menurunkan waktu resetting di CH 2, 3 & 4 menggunakan metodologi Six Sigma. Penelitian dilakukan dengan mengikuti tahapan yang ada dalam DMAIC serta menggunakan tools Six Sigma untuk memperbaiki proses resetting. Untuk menguji perbaikan yang telah dilakukan, digunakan metode statistik untuk membandingkan data sebelum dan sesudah menggunakan Normality Test dan Two Sample T-Test. Penelitian ini dilakukan dalam kurun waktu Januari hingga Juni 2015 dimana data baseline diambil dari Januari ? Maret 2015 dan improvement dilakukan mulai April 2015 dimana pengukuran waktu resetting setelah perbaikan dilakukan dari April ? Juni 2015. Pada akhirnya, penerapan Six Sigma ternyata mampu mengurangi waktu resetting di CH 2, 3 & 4 dari 4,7 jam menjadi 3 jam. Pengurangan 1,7 jam ini jika dikalikan dengan jumlah resetting di tahun 2014 dan dikalikan dengan rate per hour production line maka akan memberikan pemasukan sebesar 4,2 Miliar dan sebagian dari pemasukan tersebut dapat dijadikan sebagai insentif bagi operator pelaksana resetting untuk memberi semangat sehingga improvement yang telah dilakukan akan terus berjalan;

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ABSTRACTThis thesis aims to explain how the application of Six Sigma in PT SKF Indonesia as well as the conduct of business process improvement in the production area of PT SKF Indonesia in reducing the time resetting in CH 2, 3 & 4 using Six Sigma methodology. The study was conducted by following stages in DMAIC and using Six Sigma tools to improve the process of resetting. To test the improvements made, statistik method was used to compare data before and after using normality Test and Two Sample T-Test. This research was conducted in the period January to June 2015 where baseline data taken from January to March 2015 and improvement conducted from April 2015 in which the measurement time resetting after the repair is done from April to June 2015. In the end, the application of Six Sigma was able to reduce the time resetting in CH 2, 3 & 4 from 4.7 hours to 3 hours. This reduction of 1.7 hours when multiplied by the number of resetting in 2014 and multiplied by the rate per hour production line will provide revenues of 4.2 billion and a portion of the revenue can be used as an incentive for operators implementing resetting to encourage that improvement has done will continue to run.;This thesis aims to explain how the application of Six Sigma in PT SKF Indonesia as well as the conduct of business process improvement in the production area of PT SKF Indonesia in reducing the time resetting in CH 2, 3 & 4 using Six Sigma methodology. The study was conducted by following stages in DMAIC and using Six Sigma tools to improve the process of resetting. To test the improvements made, statistik method was used to compare data before and after using normality Test and Two Sample T-Test. This research was conducted in the period January to June 2015 where baseline data taken from January to March 2015 and improvement conducted from April 2015 in which the measurement time resetting after the repair is done from April to June 2015. In the end, the application of Six Sigma was able to reduce the time resetting in CH 2, 3 & 4 from 4.7 hours to 3 hours. This reduction of 1.7 hours when multiplied by the number of resetting in 2014 and multiplied by the rate per hour production line will provide revenues of 4.2 billion and a portion of the revenue can be used as an incentive for operators implementing resetting to encourage that improvement has done will continue to run., This thesis aims to explain how the application of Six Sigma in PT SKF Indonesia as well as the conduct of business process improvement in the production area of PT SKF Indonesia in reducing the time resetting in CH 2, 3 & 4 using Six Sigma methodology. The study was conducted by following stages in DMAIC and using Six Sigma tools to improve the process of resetting. To test the improvements made, statistik method was used to compare data before and after using normality Test and Two Sample T-Test. This research was conducted in the period January to June 2015 where baseline data taken from January to March 2015 and improvement conducted from April 2015 in which the measurement time resetting after the repair is done from April to June 2015. In the end, the application of Six Sigma was able to reduce the time resetting in CH 2, 3 & 4 from 4.7 hours to 3 hours. This reduction of 1.7 hours when multiplied by the number of resetting in 2014 and multiplied by the rate per hour production line will provide revenues of 4.2 billion and a portion of the revenue can be used as an incentive for operators implementing resetting to encourage that improvement has done will continue to run.]"