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All Journal Jurnal Teknik Industri SINTEK JURNAL: Jurnal Ilmiah Teknik Mesin Prosiding Seminar Nasional Sains dan Teknologi Terapan Wave: Jurnal Ilmiah Teknologi Maritim International Journal of Marine Engineering Innovation and Research Saintara : Jurnal Ilmiah Ilmu-Ilmu Maritim Jurnal Teknologi Maritim
Ali Azhar
Universitas Hang Tuah
Automotive Engineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Library & Information Science Materials Science & Nanotechnology Mathematics Mechanical Engineering Physics Social Sciences Transportation

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Perancangan Group Technology Layout Di PT. DPS Surabaya Dengan Metode Simulasi Dan Taguchi Saraswati, Rahaju; Azhar, Ali; Mudjahidin, M; Kunhadi, Dedy
Jurnal Teknik Industri Vol 12, No 2 (2011): Agustus
Publisher : Department Industrial Engineering, University of Muhammadiyah Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1628.766 KB) | DOI: 10.22219/JTIUMM.Vol12.No2.104-109

Abstract

PT Dok dan Perkapalan Surabaya (DPS) is one of several strategic BUMN in marine field. With BUMN restructurisation and efficiency program from Government, PT DPS is liable to improve its production system efficiency. Many problems that faced by PT DPS to improve its production system efficiency are : (1)There is waste work shop such as work in process, waiting time, and flow time at fabrication process in PT DPS, (2) Because waste work shop is still big, shop production process efficiency has not reached maximally yet, (3)Layout and facilities of PT DPS today is already suitable with concept of Product Oriented Work Breakdown Structure (PBWS), but it is limited at simple construction form. At this research, there is ship production process design with Process Lane Construction and Zone Outfitting method or it is known with Group Technology Layout (Manufacturing Cell System) term in order to solve inefficiency problem at ship production process in PT DPS. Design process is performed by integrating Simulation method, Taguchi, Response Surface Methodology, and Analytical Hierarchy Process (AHP). Simulation method is used to model designed manufacturing cell system, meanwhile Taguchi method and Response Surface Methodology are used for experiment and optimization at manufacturing system simulation model. In order to measure the performanceof designed manufacturing cell system, multivariate measurement method is used, that is by measuring work in process, waiting time, and flow time with smaller the better criteria. Multi response becomes single response by using Analytical Hierarchy Process (AHP) method. From research result with Taguchi Method and Response Surface Methodology know that in fabrication stage optimal layout is second tipe, optimal set up time is 40 minutes, optimal lot size is 16 tons, optimal loading interval is 400 minutes, optimal demand stability is 92.5 %, in subassembly stage optimal layout is first tipe, optimal set up time is 40 minutes, optimal lotsize is 10 tons, optimal loading interval is 400 minutes, optimal demand stability is 92.5 %, in assembly stage optimal layout is first tipe, optimal set up time is 40 minutes, optimal lotsize is 6tons, optimal loading interval is 400 minutes, optimal demand stability is 92.5 %, in erection stage optimal layout is second tipe, optimal set up time is 40 minutes, optimal lot size is 6 tons, optimal loading interval is 480 minutes, optimal demand stability is 92.5 %.
PENGARUH VOLUME AIR DI RUANG MUAT TERHADAP STABILITAS KAPAL PENGANGKUT IKAN HIDUP Randy Hedva Rakasiwa Rumbawa; Ali Azhar; Kusnindar Priohutomo
Wave: Jurnal Ilmiah Teknologi Maritim Vol. 14 No. 2 (2020)
Publisher : Badan Riset dan Inovasi Nasional

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29122/jurnalwave.v14i2.4030

Abstract

Kapal pengangkut ikan hidup merupakan salah satu alat transportasi yang digunakan selama proses ekspor maupun domestik dan bertujuan untuk mempertahankan ikan dalam keadaan tetap hidup. Muatan utama kapal pengangkut ikan hidup (KPIH) adalah air dan ikan yang berenang bebas didalamnya dan muatan cair dalam ruang muat dapat bergerak bebas, sehingga terjadi free surface effect (FSE). Paper ini bertujuan untuk menghitung dan mensimulasikan stabilitas kapal pengangkut ikan hidup dan muatan berupa cairan, sehingga dapat diketahui stabilitas kapal berdasarkan muatannya. Analisa stabilitas berdasarkan variasi muatan menggunakan software Maxsurf. Hasil dari analisa stabilitas berdasarkan variasi muatan pada ruang muat 0%, 25%, 50%, 75%, 95% dengan variasi volume FOT dan FWT 25%, 50%, 75%, 100% adalah stabilitas kapal tidak layak untuk FOT dan FWT <75 % menurut kriteria IMO.
SISTEM AKURASI KONTROL SEBAGAI IMPLEMENTASI STRATEGI ZERO MARGIN PADA PEMBANGUNAN KAPAL LST (LANDING SHIP TANK) DI PT. DAYA RADAR UTAMA UNIT III LAMPUNG Dimas Prasetya; Ali Azhar
Prosiding Seminar Nasional Sains dan Teknologi Terapan Pendekatan Multidisiplin Menuju Teknologi dan Industri yang Berkelanjutan
Publisher : Institut Teknologi Adhi Tama Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Perkembangan teknologi pembangunan kapal sudah didukung oleh peningkatan kualitas dan juga fasilitas yang memadai untuk melakukan proses produksi. Namun sebagian besar galangan di Indonesia mengunakan cara yang sederhana untuk melakukan proses produksi. Cara ini dikenal dengan strategi non-zero margin (metode dengan memberikan marginal pada setiap proses produksi, dari gambar kerja hingga proses erection pada kapal). Hal ini sangat merugikan dan menimbulkan berbagai permasalahan yang terbagi dari segi management dan juga dalam segi produksi. Permasalahan dari segi management yaitu mengenai JO, biaya (over budget), Re-schedule. Sedangkan permasalahan pada produksi yaitu seperti misalignment (ketidaklurusan), deformasi kompleks, waste matrial. Oleh karena ini, PT. DRU Unit III Lampung berinovasi untuk meminimalisir permasalahan dan kerugian yang ada dengan menerapkan strategi baru yang dinamakan “zero margin”. Strategi ini menerapkan sistem non marginal (tanpa mengunakan margin pada setiap proses) dengan memaksimalkan kinerja dari sistem akurasi kontrol yang berlaku dan sistem management yang lebih terarah. Maka analisis perlu dilakukan pada setiap bagian termasuk fase krusial yang menyebabkan munculnya permasalahan dari proses awal hingga erection pada kapal. Metode analisis observatif dan diterapkan pada proses produksi dan juga menentukan sistem akurasi kontrol yang tepat untuk mendukung program zero margin ini. Pelaksanaan strategi zero margin dengan sistem akurasi kontrol dapat meghasilkan nilai efektifitas dan efisiensi dalam pelaksanaan proses produksi yaitu dapat menghemat biaya produksi, mempercepat target pengerjaan, dan meminimalisir berbagai kesalahan di lapangan.
Risk Analysis of Delay in Ship Repair KM Binaiya with Bayesian Network Method Intan Baroroh; Galuh Valent Setiawan; Ali Azhar; Didik Hardianto; Ahmad Basuki Widodo
International Journal of Marine Engineering Innovation and Research Vol 8, No 3 (2023)
Publisher : Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j25481479.v8i3.18494

Abstract

Ship repair is a project that is short in process so that time is an important element in its completion parameters. Delay is something that can happen to a job. A job experiencing delays must have a cause that affects the work. Causes of delay in the case of ship repair are poor time management, less skilled human resources, the addition or development of work. But whatever the obstacles, shipyards are still required to complete the ship repair process in a timely manner. Seeing this problem, this research was conducted to provide input in connection with the strategies used by PT XYZ in overcoming the delay factor in the repair of the KM Binaiya ship. In the research to support this thesis, the Bayesian Networks Method is used to analyze the factors that cause delays in ship repairs. After risk identification using the Bayesian networks method. The highest risk is replete activities as minor categorized, where the caused tank cleaning work related to hazardous waste, which must be cleaned to be safe for hot work with a risk score of 0.108. The second cause is installation of scaffolding for replete work facilities at height with a risk score of 0.054.
Concept of Multi-Orientation Shipyard Industry Development Environmentally Friendly and Sustainable Ali Azhar; Nuddin Harahab; Fadillah Putra; Andi Kurniawan; Gde A Prabhawatya Poundra
International Journal of Marine Engineering Innovation and Research Vol 9, No 1 (2024)
Publisher : Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j25481479.v9i1.20203

Abstract

Indonesia's geographical conditions and position are very favorable and various policies from the government from 2005 until now are expected to become the shipyard industry to become a tough industry, but in reality it is still not as expected. The condition of the domestic shipyard industry in 2017 until now there is only ship repair and maintenance work, while orders for new ships or buildings are very few and even zero demand ship orders, causing business continuity in the shipyard industry to be disrupted and even out of business. This paper aims to develop a concept for the development of a multi-oriented shipyard industry that is environmentally friendly and sustainable. The preparation of this concept begins with identifying problems, collecting secondary data, reviewing related articles (shipyard industry, ship recycling yard industry, environment, sustainability, and supporting methods), analyzing and developing a development concept. The results obtained from drafting the concept are in the form of a diagrammatic model for the development of a multi-oriented shipyard industry that is environmentally friendly and sustainable. The development concept consists of (1) research background in the form of the existing conditions of the shipyard industry, ship recycling industry, geography, infrastructure, superstructure; (2) research that has been conducted in the form of relevant journal articles and proceedings; (3) research to be conducted in the form of sustainability criteria, orientation diversification and strategy selection; (4) implementation.
STANDARISASI HARGA PEMBANGUNAN KAPAL PERINTIS Ali Azhar; Tri Agung K
Jurnal Teknologi Maritim Vol 2 No 1 (2019): Jurnal Teknologi Maritim
Publisher : Pusat Penelitian dan Pengabdian Masyarakat (P3M) - PPNS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35991/jtm.v2i1.902

Abstract

Pembangunan kapal termasuk dalam pekerjaan komplek dengan sistem pembayaran multi tahun atau lebih dari satu tahun anggaran, sehingga sangat penting untuk menyusun anggaran biaya atau harga yang dibutuhkan dalam membangun kapal baru. Harganya harus disesuaikan dengan kebutuhan material dan jasa dengan standar harga pasar selama waktu penyelesaian. Tujuan penelitian tentang standar harga pembangunan kapal perintis adalah melakukan identifikasi, analisis dan menyusun standar harga pembangunan harga kapal perintis beserta komponennya. Tahapan-tahapan yang dilaksanakan dalam penelitian ini adalah melakukan identifikasi data primer dan sekunder yang berkaitan harga kapal perintis dan komponennya dengan studi pustaka dan survey lapangan. Data diolah dengan metode regresi dan diperoleh grafik dan persamaan standar harga kapal perintis tahun 2015 adalah : y = 0,0323x + 10,709; persamaan biaya material adalah ymn = ym + ym10{(n – 2015)/100}; dan persamaan biaya jasa pembangunan dan biaya pihak ketiga adalah yjn = yj + yj 8.25 {(n – 2015)/100}.
Heat Transfer Analysis of Sandwich Plate System Application As Insulation Material for Fishing Vessels Hatches by Finite Element Method Syauqi, Syafiq Ahmad; Nugroho, Nur Yanu; Hardianto, Didik; Azhar, Ali
SINTEK JURNAL: Jurnal Ilmiah Teknik Mesin Vol. 18 No. 1 (2024): SINTEK JURNAL
Publisher : Universitas Muhammadiyah Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24853/sintek.18.1.6-12

Abstract

Fish is a highly perishable food due to its suitability as a substrate for the growth of spoilage microbes, particularly bacteria. One method to maintain fish quality and extend its shelf life is preservation through a cooling system, where the duration of effective storage in the hatch is influenced by the quality of the insulation wall. Previous research modified the hatch insulation wall using a rice husk and white cement composition; however, these materials proved neither effective nor efficient in maintaining cooling temperatures. This study aims to determine the effect of heat transfer in a sandwich plate system on cooling time and temperature. Experiments were conducted using three variations in core layer thickness within a stainless steel-polyurethane-stainless steel configuration. The results indicated that at a temperature of 4°C, the maximum cooling times for each core layer thickness variation were as follows: variation 1 (3-20-3mm) lasted 62.5 hours, variation 2 (3-25-3mm) lasted 64 hours, and variation 3 (3-30-3mm) lasted 65.5 hours. The findings demonstrate that an increase in core layer thickness results in a prolonged maintenance of the cooling temperature within the hatch.
Model Perhitungan Volume Pekerjaan Lambung Kapal Niaga Kencono, Dolok Joko; Suwasono, Bagiyo; Azhar, Ali
Saintara: Jurnal Ilmiah Ilmu-Ilmu Maritim Vol 9 No 1 (2025): SAINTARA (Maret 2025)
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat, Akademi Maritim Nusantara Cilacap

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52475/saintara.v9i1.383

Abstract

Indonesia is a maritime country where most of its territory is in the form of oceans, so many people utilize its marine resources. The sea is currently widely used as a transportation medium for people and logistics using commercial ships. With so many commercial ships in Indonesia, the ship repair industry is also increasingly needed because it requires regular maintenance and repair according to the rules of ship classification. Hull repair treatment includes scraping, washing with fresh water, blasting (full blasting, sweep blasting, and spot blasting), painting, and replating (based on ultrasonic thickness test results). This research will focus more on container ships, bulk carriers, and oil tankers. In ship repair, the condition of the ship’s body, especially the hull, is the most critical concern. The calculation of the volume of hull work on each shipyard is different, making it difficult for the ship owner to estimate the repair time to be carried out. In this case, this study aims to determine the efficiency of the volume of hull repair work on commercial ships so that maintenance/repair work can run optimally. The method used is the calculation of Lloyd’s Registers with the Analytical Hierarchy Process (AHP). The analysis results show that the ship’s hull work is significantly different on the MT. Cosmic 15 because it has a difference in calculations from the shipyard with Lloyd’s, which is 203.636 m2. In the Analytical Hierarchy Process (AHP) analysis, the calculation of CR (Consistency Ratio) gets inconsistent results because the value is more than 0.1, namely 5.303. This is because of the data on the hull area of MT. Cosmic 15 is different in each shipyard where the ship docks.
Co-Authors Ahmad Basuki Widodo Andi Kurniawan Bagiyo Suwasono, Bagiyo Dedy Kunhadi Didik Hardianto Dimas Prasetya Fadillah Putra Galuh Valent Setiawan Gde A. Prabhawatya Poundra Intan Baroroh Kencono, Dolok Joko Kusnindar Priohutomo Nuddin Harahab Nugroho, Nur Yanu Rahaju Saraswati Randy Hedva Rakasiwa Rumbawa Syauqi, Syafiq Ahmad Tri Agung K