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All Journal Jurnal Teknik Industri BERKALA SAINSTEK Prosiding Seminar Nasional Sains dan Teknologi Terapan Wave: Jurnal Ilmiah Teknologi Maritim International Journal of Marine Engineering Innovation and Research
Ali Azhar
Program Studi Teknik Perkapalan, Fakultas Teknik Dan Ilmu Kelautan, Universitas Hang Tuah
Agriculture, Biological Sciences & Forestry Automotive Engineering Biochemistry, Genetics & Molecular Biology Chemistry Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mathematics Mechanical Engineering Physics 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.
Hazards Identification and Risk Assessment In Welding Confined Space Ship Reparation PT. X With Job Safety Analysis Method Muchammad Aunur Rofiq; Ali Azhar
BERKALA SAINSTEK Vol 10 No 4 (2022)
Publisher : Universitas Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19184/bst.v10i4.32669

Abstract

PT X is a docking and shipyard company with experience in repairing various types of ships. Dangers and risks are always exist in every job including ship repair. Therefore, it is necessary to identify hazards and risk assessments. Welding in a confined space includes work that is a source of danger that has the potential to threaten the lives of workers in the ship repair process because access to and exit is limited and is not made to be a continuous work place. The purpose of this study is to identify hazards and assess risks in PT X ship repair confined space welding. The method used in hazard identification and risk control is Job Safety Analysis (JSA) with direct field observations and calculation of likelihood, concequences, and risk values. score on risk assessment according to AS/NZS 4360:2004 and with expert judgment. The results of this study identified that there were 49 potential hazards, then a risk assessment was carried out and there were 36 risks at low risk levels and 13 risks at moderate risk levels. The recommendations given include: using PPE and suction blowers when working, not entering the tank before it is declared safe, taking safety briefings seriously and worker absenteeism, tidying up cables and placing them in a safe position, ensuring workers' hands are dry when in contact with electricity, paying attention to attitude working conditions and conditions around the work area to always be alert
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.
Co-Authors Ahmad Basuki Widodo Dedy Kunhadi Didik Hardianto Dimas Prasetya Galuh Valent Setiawan Intan Baroroh Kusnindar Priohutomo Muchammad Aunur Rofiq Rahaju Saraswati Randy Hedva Rakasiwa Rumbawa