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Optimation Model of Planning Investment Dockyard with Approach Multi Objective Goal Programming Azhar, Ali
Makara Journal of Technology Vol 6, No 3 (2002)
Publisher : Directorate of Research and Community Services, Universitas Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (76.551 KB) | DOI: 10.7454/mst.v6i3.54

Abstract

The purpose of this research is to determine decision variable, goal function, alternative priority and achievement function in investment planning. From this optimation component, the model of ship yard investment planning could be achieved. The model of developed model in this research was the optimation of ship yard investment planning using multi objective goal programming approach. The model consist of 5 decision variable, 11 goal function, 2 alternative priority and 11 achievement functions. The model implementation was done toward PT ASSI investment planning. The calculation using from Quantitative System 3.0 was that the quantity of decision variable parameters could be achieved. The first alternative was based on the difference goal priority, and the second alternative based on similiar goal priority.
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 %.
SISTEM AKURASI KONTROL SEBAGAI IMPLEMENTASI STRATEGI ZERO MARGIN PADA PEMBANGUNAN KAPAL LST (LANDING SHIP TANK) DI PT. DAYA RADAR UTAMA UNIT III LAMPUNG Prasetya, Dimas; Azhar, Ali
Prosiding Seminar Nasional Sains dan Teknologi Terapan Pendekatan Multidisiplin Menuju Teknologi dan Industri yang Berkelanjutan
Publisher : Institut Teknologi Adhi Tama Surabaya

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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.
ACADEMIC STUDY OF DISTRICT FORMATION SOUTH INDRAGIRI Satriawan Fikri, Novyar; Azhar, Ali
Progressive Law Review Vol 2 No 01 (2020): April
Publisher : Progressive Law Review

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Abstract

This research is motivated by the geographical conditions of Indragiri Hilir Regency in the Southern Region of Riau Province with an area of + 18,812, 97 km2, the vast area of Indragiri Hilir Regency coupled with the condition of almost 80% of the territorial waters which causes a range of spite and the difficult distance of the community with Central government. This type of research belongs to the type of Observational Research legal research by survey. the formation of new autonomous regions will increase the cost of administering government, but is expected to improve the quality and equity of services to the community, increase the acceleration of economic development, especially in rural areas, facilitate the growth of democratic life in the regions, improve security and order in the regions, contribute to unity and nationality (nation building). Keywords
ANALISA KEKUATAN SAMBUNGAN DINDING RUMAH GELADAK DENGAN SYSTEM BOLTING Bellarina, Elsy Putri; Azhar, Ali; Kristiyono, Tri Agung; Aditya, Bagus Kusuma
Prosiding Seminar Teknologi Kebumian dan Kelautan Vol 2, No 1 (2020)
Publisher : Prosiding Seminar Teknologi Kebumian dan Kelautan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (685.095 KB)

Abstract

Penelitian ini bertujuan untuk menganalisa kekuatan sambungan dinding rumah geladak dengan menentukan jenis dan jumlah sambungan bolting (baut) yang terpasang pada konstruksi rumah geladak. Penggunaan diameter baut yang bervariasi yaitu baut berdiameter M12, M14 dan M16 dengan 2 titik baut serta baut berdiameter M12, M14 dan M16 dengan 1 titik baut yang akan dilakukan pengujian dengan software inventor 2015. Setelah itu akan dibandingkan dengan kekuatan sambungan las sebagai standar acuan kekuatan sambungan. Hasil yang diperoleh bahwa sambungan bolting dengan variasi diameter telah memenuhi syarat dalam aspek kekuatan seuai aturan BKI Vol 2, bab 18 tentang tegangan geser yang diijinkan sebesar 360 N/mm2 dan tegangan normal sebesar 171 N/mm2, sehingga sambungan bolting dinyatakan layak untuk diaplikasikan dalam konstruksi sambungan dinding rumah geladak