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"Penentuan desain sistem Impressed Current Cathodic Protection di bagian dasar tanki T-1301 A/B/C/D dan AB Rerun Tank di PT XX Kalimantan Timur yang meliputi proses perhitungan kebutuhan arus dan jumlah tegangan DC keseluruhan sistem struktur serta pengaruh penambahan struktur lain yang meliputi electrical grounding system telah berhasil dilakukan dan secara efektif telah dikontrol di lapangan. Selain proses desain engineering, variasi lapisan tahanan tanah terhadap ketidakseimbangan IR Drop pada sistem Impressed Current Cathodic Protection di bagian dasar tanki T-1301 A/B/C/D dan AB Rerun Tank di PT XX Kalimantan Timur dan pengaruhnya terhadap distribusi potensial telah dipelajari.Dari hasil pembuktian di lapangan menunjukkan bahwa dibutuhkan 10 anoda tambahan dengan total kebutuhan arus DC 154 Ampere dan kebutuhan tegangan DC 32 Volt , selain itu tahanan tanah yang tinggi diatas 3000 ohm cm akan menyebabkan pembacaan error yang tinggi.pH tanah yang rendah berkisar 5-7 akan mengurangi tahanan tanah, dan meningkatkan distribusi arus proteksi katodik.

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Engineering design calculation for bottom section of T-1301 A/B/C/D dan AB Rerun Tank at PT XX Santan Terminal including current requirement and DC voltage calculation followed by additional structure such electrical grounding system has been already successfully implemented and controlled at field. Furthermore, effect of soil layer resistivity and pH of soil against disproportion of IR Drop voltage including its effect to potential distribution has been already successfully observed. Another influences such depth and location of anode groundbed determination along with establishment of impressed current cathodic protection main tools and equipments as external corrosion control method has been defined as the most effective way for controlling potential distribution against structure.

As per verification results from site, the results showed that the cathodic protection required 10 additional anode (MMO), with minimum amperage DC supply is 154 A, minimum voltage supplied is 32 Volt, it has been identified that high soil resistivity above 3000 ohm.cm would cause error reading. Naturally, acid soil in about pH 5-7, would decrease soil resistivity and enhanced potential distribution from anode to tank structure."

"Engineering design calculations for tank bottom sections, including direct current requirements and voltage calculations, followed by additional structures, such as electrical grounding systems, have already been successfully implemented and controlled in field conditions. Furthermore, the effect of soil resistivity in layers, oxygen content and the pH value of the soil against the disproportionate IR-Drop voltage, including its effect on potential distribution, have been already successfully observed. Other influences, such as the depth and location of the anode groundbed determination along with the establishment of impressed current cathodic protection related to the main tools and equipment, such as external corrosion control methods, have been defined as the most effective ways in order to control potential distribution against the additional structures. Persuant to the verification results from the site located at Marangkayu, East Borneo, it has been determined that high soil resistivity could cause error readings in accordance with the accumulation results of the true readings and the IR-Drop voltage, since under real conditions, the tank structure would have received less current flow from an anode compared to a lower result. Naturally, a low pH value from the soil would decrease soil resistivity and enhance potential distribution from the anodes to the tank structures. The results show that the cathodic protection required 10 additional anodes, (each one is of a tubular mixed metal oxide) with a DC supply at minimum amperage of 154 Amps and a minimum voltage supply of 32 Volts. During the research, it was identified that high soil resistivity above 3000 ohm-cm would cause error readings. Naturally, acidic soil is in the region of pH 5-7 value, which would decrease soil resistivity and enhance the potential distribution from the anode to the tank structure."

"Penelitian ini merupakan penelitian komprehensif terhadap perancangan Detailed Engineering Design (DED) RSU Kelas B di Bandung, khususnya pada aspek pondasi dalam. Penelitian ini bertujuan untuk menganalisis perbandingan metode pelaksanaan tiang pancang dan tiang bor terhadap biaya dan waktu pekerjaan. Pekerjaan tiang pancang beton persegi pejal dengan dimensi 45x45 cm dan panjang 15 m membutuhkan biaya sebesar Rp2.654.542.120,00 (dengan PPN 10%) serta durasi pelaksanaan selama 73 hari. Pekerjaan tiang bor beton bulat pejal dengan dimensi  40 cm dan panjang 14,25 m membutuhkan biaya sebesar Rp2.670.697.330,00 (dengan PPN 10%) serta durasi pelaksanaan selama 98 hari.

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This study is a comprehensive study on the design of Detailed Engineering Design (DED) of Class B General Hospital in Bandung, especially on deep foundations. This study aims to analyze the comparison of driven and bored pile on costs and work time. Solid square concrete driven pile with dimension 45x45 cm and length 15 m required Rp2,654,542,120.00 (with VAT 10%) and duration 73 days. Solid round concrete bored pile with dimensions  40 cm and length 14.25 m would cost Rp2,670,697,330.00 (with VAT 10%) and duration 98 days."

"Penelitian ini membahas perbandingan waktu standar pada proses inspeksi sebelum dan sesudah proses dengan tujuan menyeimbangkan lintasan pada stasiun kerja. Waktu proses di lintasan inspeksi sebelum perbaikan adalah 0.56 menit/pcs dan setelah dilakukan aktivitas perbaikan menggunakan keseimbangan lintasan dengan metode bobot posisi (weighted position) di dapat 0.51 menit/pcs. Pengukuran waktu standar di lintasan inspeksi dilakukan dengan menggunakan jam henti (stopwatch), data yang diambil sebanyak 50 data yang kemudian dilakukan uji keseragaman dan kecukupan data. Jumlah stasiun kerja berkurang menjadi 3 stasiun kerja dengan menyederhanakan lintasan agar terjadi keseimbangan lintasan. Telah terjadi penurunan nilai efisiensi dan besarnya persentase balance delay sesudah dilakukan perbaikan, sehingga makin memperbesar bottleneck pada proses inspeksi. Efisiensi di stasiun kerja 1 sampai 4 berturut-turut adalah 53.85%, 29.17%, 50%, dan 41.18%. Jika dilihat dari total waktu standar proses inspeksi yang dihasilkan sesudah perbaikan didapat hasil yang kecil di bandingkan sebelum perbaikan, sehingga dapat mengakibatkan kecepatan rata-rata proses inspeksi meningkat sebesar 8.93% dari 0.56 menit/pcs menjadi 0.51 menit/pcs. Selain itu, terjadi kenaikan produktivitas sesudah perbaikan sebesar 0.05 menit/pcs, dengan membandingkan total waktu proses operasi inspeksi sudah perbaikan dengan sebelum perbaikan. Berkurangnya 1 stasiun kerja maka berkurang pula waktu proses inspeksi. Hal ini berakibat terjadinya penghematan biaya sebesar 0.24 JPY/pcs atau sekitar Rp.25. Selain itu dapat pula menghemat area pemisahan produk.

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This research discusses the comparison of the standard time in the inspection process before and after the process with the goal of balancing the track at the work station. The time on the track inspection process before improvement is 0.56 minutes / pcs and after repair activity using a balance weight position trajectory method (weighted position) in the can 0.51 min / pcs. Measurement standard time on the track inspection is done using clock-stop (stopwatch), data collected by 50 then carried out test data uniformity and adequacy of the data. The number of work stations is reduced to 3 work stations by simplifying the track so that a balance trajectory. There has been a decline in the percentage of the value of efficiency and balance delay after repairs, further increase the bottleneck in the inspection process. Efficiency at work stations 1-4, respectively 53.85%, 29.17%, 50%, and 41.18%. When viewed from the total time of the standard inspection process produced results obtained after a small improvement compared to before the repair, which would cause the average speed of the inspection process increased by 8.93% from the 0.56 minute/pcs a 0.51 minute/pcs. In addition, an increase in productivity after the improvement of 0.05 minute/pcs, by comparing total operating time of the inspection has been improved with prior repair. Reduced one work station then diminish its inspection process time. This results in cost savings of $ 0.24 JPY/pcs or about Rp 25. Moreover, it can also save product separation area."

"Kompleksitas proyek EPC yang dikarenakan saling ketergantungan antara aktifitas engineering, procurement dan construction mempunyai tantangan utama dalam mengkoordinasikan aliran informasi dan proses iterasi diantara disiplin engineering yang terlibat. Penerapan concurrent engineering memerlukan suatu sistem untuk meminimalkan terjadinya rework yang disebabkan oleh faktor internal dan eksternal dalam pengelolaan aliran informasi engineering. Tesis ini menggunakan Confirmatory Factor Analysis yang menghasilkan model fitted dengan nilai R2 62% yang menunjukkan hubungan signifikan antara faktor internal dan eksternal terhadap rework. Tesis ini juga mengkaji penerapan concurrent engineering dengan pendekatan Design Structure Matrix (DSM) yang bertujuan untuk meminimalkan rework dengan pengaturan aktifitas proyek.

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EPC project complexity with interdependences between engineering, procurement and construction has a major challenge in coordinating the flow of information and iterative process between engineering disciplines. Implementation of concurrent engineering requires a system to minimize the occurrence of rework caused by internal and external factors in the management of the flow of engineering information. With Confirmatory Factor Analysis resulting models fitted R2 62% which showing a significant relationship between internal and external factors with rework. This thesis also examines the application of Concurrent Engineering with Design Structure Matrix (DSM) approach to minimize rework."

"ABSTRAKPerhitungan kandungan lokal dari komponen kendaraan bermotor bertujuan untuk menentukan berapa besar bca masuk (BM) yang akan dikenakan pada sub komponen yang masih diimpor. Metode yang digunakan dalam penelitian ini adalah cost structure, yaitu perhitungan berdasarkan pada struktur hiaya.Untuk mendapatkan struktur biayanya, komponen dibagi menjadi sub komponen-sub komponcn, mulai dari tingkat satu sampai tingkat al-chit, yang disesuaikan dengan proses pembuatan atau perakitannya., dimana biayanya dlhitung untuk satu unit komponen akhir. Biaya-biaya tersebut dikonversikan dalam bobot secara proporsional. Bobot dihitung dari sub komponen ting!-cat satu, dan digunakan sebagai dasar perhitungan bobot tingkat di bawahnya.Bobot yang telah diperoleh untuk musing-masing sub komponen berdasarkan tingkatannya digunakan sebagai dasar untuk menentukan besamya bobot al-ctual atau bobot unsur Iokalnya, yaitu dengan mengalikan bobot tersebut dengan tlngkat pendalaman struktumya. Perhitungan bobot aktua! dimulai dzui tingkat paling rendah, dan digunakan sebagai dasar perhitungan bobot aktual pada tingkat di atasnya_ Besamya persentase kandungan lokal adalah perbandingan antara bobot aktual dengan bobotnya.Dalam perhitungan kandungan lokal yang menggunakan struktur biaya., otomatis diperoleh usarnya harga pokok dari komponen, tetapi harga tersebut bukan merupakan harga pokok aktual karena sub komponen impomya masih dalam harga dasar atau harga CH' (COS1, Insurance, and Freight).

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