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All Journal KAPAL Jurnal Ilmu Pengetahuan dan Teknologi Kelautan JURNAL INTEGRASI Wave: Jurnal Ilmiah Teknologi Maritim Makara Journal of Technology Journal of Global Pharma Technology
I. K. Suastika
Department Of Naval Architecture, Faculty Of Marine Technology, Institut Teknologi Sepuluh Nopember (ITS), Surabaya, 60111, Indonesia
Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Earth & Planetary Sciences Electrical & Electronics Engineering Engineering Materials Science & Nanotechnology Mechanical Engineering Medicine & Pharmacology Other

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Analysis Of Non Value Added Activity On Ship Production Process Approach Concept Of Value Stream Mapping Case Study At PT. Dumas Tanjung Perak Shipyard Surabaya Tebiary, An Apriyani; Suastika, I Ketut; Ma'ruf, Buana
Wave: Jurnal Ilmiah Teknologi Maritim Vol 11, No 1 (2017)
Publisher : Wave: Jurnal Ilmiah Teknologi Maritim

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (237.584 KB) | DOI: 10.29122/jurnalwave.v11i1.2056

Abstract

Competition of shipyard industry market in this globalization era encourages companies to realize the importance of improving the effectiveness and efficiency so that, able to compete in terms of quality, cost and on time delivery. Production effectiveness is one effort that must be achieved by a shipbuilding industry to survive amid the competition in seizing market share. Production effectiveness is done with the aim of producing economically, continuously and on time to the customer, so that the company's survival can be guaranteed. This study aims to identify the activities that are classified as waste in the process of ship building at PT. Dumas Tanjung Perak Shipyard Surabaya so as to minimize production time in shipyard industry. The results showed the effectiveness of PT. DUMAS currently reaches 84.96%. In the process of improvement with the application of value stream mapping effectiveness value reached 92%. The conclusion of this research is a value stream mapping method can be applied measuring instrument and can describe the flow of production process in shipyard so that can explain in detail activity that give value added or non value added activity.
Pengukuran Kesiapan Teknologi untuk Pembangunan Kapal Kontainer 100 TEUs dengan Sistem Modular di PT PAL Indonesia Virliantarto, Noor; Ma'ruf, Buana; Suastika, I Ketut
Wave: Jurnal Ilmiah Teknologi Maritim Vol 11, No 1 (2017)
Publisher : Wave: Jurnal Ilmiah Teknologi Maritim

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (289.562 KB) | DOI: 10.29122/jurnalwave.v11i1.2054

Abstract

Industri galangan kapal Indonesia mempunyai potensi yang cukup besar jika ditinjau dari kebutuhan kapal dari dalam negeri, termasuk banyaknya jumlah kebutuhan kapal kontainer 100 TEUs dalam waktu dekat. Untuk memenuhi kebutuhan sekaligus meningkatkan daya saing industri galangan kapal Indonesia di mata dunia dibutuhkan pengembangan teknologi produksi kapal. Banyaknya kebutuhan kapal kontainer 100 TEUs memungkinkan untuk dibangun secara masal dengan sistem modular, dimana teknologi modular adalah implementasi dari teknologi PWBS yang telah diterapkan banyak galangan. PT. PAL Indonesia telah menerapkan teknologi modular, akan tetapi untuk pembangunan kapal PKR (Perusak Kawal Rudal). Oleh karena itu, pada makalah ini dilakukan pengukuran kesiapan teknologi PT. PAL Indonesia dengan metode pengukuran model teknometrik untuk pembangunan kapal kontainer secara masal dengan sistem modular, di mana teknometrik membagi empat komponen teknologi yang terdiri dari technoware, humanware, inforwar, dan orgaware. Hasil dari pengukuran tersebut memberikan rekomendasi pengembangan galangan kapal, antara lain pemanfaatan lahan sebagai buffer area, melakukan transfer of technology pada SDM, mengintegrasikan sistem informasi, dan membentuk badan penelitian dan pengembangan.
Perencanaan Penjadwalan Reparasi Kapal Ferry Dengan Menggunakan Metode Flash Firstdhitama, Wisnu; Suastika, I Ketut; Ma'ruf, Buana
Wave: Jurnal Ilmiah Teknologi Maritim Vol 12, No 1 (2018)
Publisher : Wave: Jurnal Ilmiah Teknologi Maritim

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1208.214 KB) | DOI: 10.29122/jurnalwave.v12i1.2869

Abstract

ABSTRAK Sebagai negara kepulauan di Indonesia kapal ferry mempunyai peran sangat vital untuk melayani angkutan penumpang dan barang dengan jarak pendek. Pada operasinya armada kapal ferry ini memiliki frekuensi waktu kedatangan dan keberangkatan yang ketat, sehingga dalam setiap waktu dockingnya harus singkat dan terjadwal dengan baik. Namun pada kasusnya diperiode special docking ini masih relatif lama yakni sekitar 37 hari pada penyelesaian dockingrepairnya.Padamakalahinimengambilstudi kasus reparasikapalpenumpangjenisferry di salahsatugalangankapal. Permasalahan yang biasaterjadidilapanganadalahpenyelesaian pekerjaan reparasi kritis atau critical path, dimana jika terjadi keterlambatan dalam penyelesaian, maka pekerjaan lainnya juga akan terjadi keterlambatan dalam penyelesaiannya.Dengan demikian dari permasalahan tersebut perlu dilakukan penjadwalan ulang melalui metode FLASHFuzzy Logic Aplication for Schedulling, dimana metode ini lebih sistematis, sederhana dan akurat dalam merencanakan penjadwalan pekerjaan reparasi. Penjadwalan ulang dengan metode FLASH ini dilakukan melalui analisis data historical repair yang sudah ada untuk menentukan waktu yang efisien dalam realisasi pekerjaan. Selanjutnya dengan bantuan kuisioner didapatkan nilai tingkat kepercayaan pada beberapa faktor yang mempengaruhi keterlambatan dalam penjadwalan dengan kesesuaian class matter.Dengan data-data tersebut, selanjutnya dilakukan olah data dengan bantuan sofware microsoftexcel 2010, QM-windows versi-4 dan matlab v-20. Dari hasil komputasi didapatkan efisiensi waktu dari pekerjaan reparasi dengan pengaturan penjadwalan penyelesaian 25 hari dengan tingkat kepercayaan sebesar 90 persen dan tingkat kesesuaian dari faktor yang mempengaruhi dalam penjadwalan sebesar 39 persen.Kata kunci :MetodeFLASH, Efisiensiwaktudocking, Penjadwalanpekerjaan.
ANALYSIS OF NON VALUE ADDED ACTIVITY ON SHIP PRODUCTION PROCESS APPROACH CONCEPT OF VALUE STREAM MAPPING CASE STUDY AT PT. DUMAS TANJUNG PERAK SHIPYARD SURABAYA Tebiary, An Apriyani; Suastika, I Ketut; Ma'ruf, Buana
Wave: Jurnal Ilmiah Teknologi Maritim Vol 11, No 1 (2017)
Publisher : Badan Pengkajian dan Penerapan Teknologi

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (237.584 KB) | DOI: 10.29122/jurnalwave.v11i1.2056

Abstract

Competition of shipyard industry market in this globalization era encourages companies to realize the importance of improving the effectiveness and efficiency so that, able to compete in terms of quality, cost and on time delivery. Production effectiveness is one effort that must be achieved by a shipbuilding industry to survive amid the competition in seizing market share. Production effectiveness is done with the aim of producing economically, continuously and on time to the customer, so that the company's survival can be guaranteed. This study aims to identify the activities that are classified as waste in the process of ship building at PT. Dumas Tanjung Perak Shipyard Surabaya so as to minimize production time in shipyard industry. The results showed the effectiveness of PT. DUMAS currently reaches 84.96%. In the process of improvement with the application of value stream mapping effectiveness value reached 92%. The conclusion of this research is a value stream mapping method can be applied measuring instrument and can describe the flow of production process in shipyard so that can explain in detail activity that give value added or non value added activity.
PENGUKURAN KESIAPAN TEKNOLOGI UNTUK PEMBANGUNAN KAPAL KONTAINER 100 TEUS DENGAN SISTEM MODULAR DI PT PAL INDONESIA Virliantarto, Noor; Ma'ruf, Buana; Suastika, I Ketut
Wave: Jurnal Ilmiah Teknologi Maritim Vol 11, No 1 (2017)
Publisher : Badan Pengkajian dan Penerapan Teknologi

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (289.562 KB) | DOI: 10.29122/jurnalwave.v11i1.2054

Abstract

Industri galangan kapal Indonesia mempunyai potensi yang cukup besar jika ditinjau dari kebutuhan kapal dari dalam negeri, termasuk banyaknya jumlah kebutuhan kapal kontainer 100 TEUs dalam waktu dekat. Untuk memenuhi kebutuhan sekaligus meningkatkan daya saing industri galangan kapal Indonesia di mata dunia dibutuhkan pengembangan teknologi produksi kapal. Banyaknya kebutuhan kapal kontainer 100 TEUs memungkinkan untuk dibangun secara masal dengan sistem modular, dimana teknologi modular adalah implementasi dari teknologi PWBS yang telah diterapkan banyak galangan. PT. PAL Indonesia telah menerapkan teknologi modular, akan tetapi untuk pembangunan kapal PKR (Perusak Kawal Rudal). Oleh karena itu, pada makalah ini dilakukan pengukuran kesiapan teknologi PT. PAL Indonesia dengan metode pengukuran model teknometrik untuk pembangunan kapal kontainer secara masal dengan sistem modular, di mana teknometrik membagi empat komponen teknologi yang terdiri dari technoware, humanware, inforwar, dan orgaware. Hasil dari pengukuran tersebut memberikan rekomendasi pengembangan galangan kapal, antara lain pemanfaatan lahan sebagai buffer area, melakukan transfer of technology pada SDM, mengintegrasikan sistem informasi, dan membentuk badan penelitian dan pengembangan.
PERENCANAAN PENJADWALAN REPARASI KAPAL FERRY DENGAN MENGGUNAKAN METODE FLASH Firstdhitama, Wisnu; Suastika, I Ketut; Ma'ruf, Buana
Wave: Jurnal Ilmiah Teknologi Maritim Vol 12, No 1 (2018)
Publisher : Badan Pengkajian dan Penerapan Teknologi

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1208.214 KB) | DOI: 10.29122/jurnalwave.v12i1.2869

Abstract

ABSTRAK Sebagai negara kepulauan di Indonesia kapal ferry mempunyai peran sangat vital untuk melayani angkutan penumpang dan barang dengan jarak pendek. Pada operasinya armada kapal ferry ini memiliki frekuensi waktu kedatangan dan keberangkatan yang ketat, sehingga dalam setiap waktu dockingnya harus singkat dan terjadwal dengan baik. Namun pada kasusnya diperiode special docking ini masih relatif lama yakni sekitar 37 hari pada penyelesaian dockingrepairnya.Padamakalahinimengambilstudi kasus reparasikapalpenumpangjenisferry di salahsatugalangankapal. Permasalahan yang biasaterjadidilapanganadalahpenyelesaian pekerjaan reparasi kritis atau critical path, dimana jika terjadi keterlambatan dalam penyelesaian, maka pekerjaan lainnya juga akan terjadi keterlambatan dalam penyelesaiannya.Dengan demikian dari permasalahan tersebut perlu dilakukan penjadwalan ulang melalui metode FLASHFuzzy Logic Aplication for Schedulling, dimana metode ini lebih sistematis, sederhana dan akurat dalam merencanakan penjadwalan pekerjaan reparasi. Penjadwalan ulang dengan metode FLASH ini dilakukan melalui analisis data historical repair yang sudah ada untuk menentukan waktu yang efisien dalam realisasi pekerjaan. Selanjutnya dengan bantuan kuisioner didapatkan nilai tingkat kepercayaan pada beberapa faktor yang mempengaruhi keterlambatan dalam penjadwalan dengan kesesuaian class matter.Dengan data-data tersebut, selanjutnya dilakukan olah data dengan bantuan sofware microsoftexcel 2010, QM-windows versi-4 dan matlab v-20. Dari hasil komputasi didapatkan efisiensi waktu dari pekerjaan reparasi dengan pengaturan penjadwalan penyelesaian 25 hari dengan tingkat kepercayaan sebesar 90 persen dan tingkat kesesuaian dari faktor yang mempengaruhi dalam penjadwalan sebesar 39 persen.Kata kunci :MetodeFLASH, Efisiensiwaktudocking, Penjadwalanpekerjaan.
Benchmark Study of FINETM/Marine CFD Code for the Calculation of Ship Resistance Firdhaus, Ahmad; Suastika, I Ketut; Kiryanto, Kiryanto; Samuel, Samuel
Kapal: Jurnal Ilmu Pengetahuan dan Teknologi Kelautan Vol 18, No 2 (2021): June
Publisher : Department of Naval Architecture - Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/kapal.v18i2.39727

Abstract

Benchmarking can be used to test CFD programs for selecting turbulence models, grid dependency studies, testing different numerical schemes and source codes, and testing different boundary conditions. CFD simulation in this study uses FINE™/Marine 7.2-1 software. The solver process at NUMECA uses the ISIS-CFD flow solver developed by EMN, which uses the incompressible unsteady Reynolds-average Navier stoke equation (RANSE). The solver is based on the finite volume method, and Turbulence models use SST k-ω models. The free surface flow around a model surface ship (DTMB 5415) advancing in calm water under steady conditions is numerically simulated. The geometry of the DTMB 5415 ship hull was provided in igs file format. The 1996 International Towing Tank Conference has recommended the DTMB 5415 combatant as a benchmark case for CFD computations of ship resistance and propulsion. The results compare well with the available experimental data. They allow an understanding of the differences that can be expected from vicious and potential flow methods due to their different mathematical formulations. It is demonstrated that the complementary application of these methods allows good predictions of the total ship resistance.
The PERBANDINGAN HASIL ANALISIS METODE ELEMEN HINGGA BERBASIS SOFTWARE DENGAN SIMPLE SUPPORTED CALCULATION PADA KAPAL 50 PAX CRANE BARGE Meida Perwira Antartika; Budianto Budianto; Muhamad Ari; Ketut Suastika
JURNAL INTEGRASI Vol 12 No 1 (2020): Jurnal Integrasi - April 2020
Publisher : Politeknik Negeri Batam

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (893.233 KB) | DOI: 10.30871/ji.v12i1.1451

Abstract

Today the use of the Finite Element Method for the analysis of the strength of a structure is increasingly popular. The method of analysis is generally made easy by using software. In this study an advanced storage platform construction structure was analyzed on the 50 PAX Crane Barge vessel. The structure of this vessel uses BV grade A steel. Profile in this forward storage construction platform, the structure withstand loads is 6.4 tons (3.2 tons portside and 3.2 tons startboard). Load conditions are considered to be static, dynamic and impact conditions. The structure of the forward storage platform uses the 75x75x6 L angle bar profile as the main amplifier, each 1829 mm apart. This main amplifier is connected directly to the plate, and functions as the main buffer of the load to be given. The results of the analysis using software in the form of von Mises stress, normal stress, and principal stress. As a verification, manual calculation is done using the Simple Supported Calculation method. In this study comparing von Mises stress, normal stress, and principal stress results of the Finite Element Method with stress results of Simple Supported Calculation. Keyword : Finite Element Method, Barge, Simple Stress Calculation
Spectral Response Surfaces and the Ringing Response of Offshore Structures Suastika, I Ketut
Makara Journal of Technology Vol. 12, No. 2
Publisher : UI Scholars Hub

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

Abstract

A method, called spectral response surface method, is proposed for the study of the ringing phenomenon of offshore structures. Newman’s results for diffraction force on a column were reformulated in terms of the frequency components of the ocean surface and their Hilbert transforms. Using a first-order reliability method together with a dynamic model for the structural response, it is straightforward to calculate the ocean surface history most likely to generate an extreme ringing response and the ringing response history.
Single Nucleotide Polymorphisms of Transcription Factor 7-LIKE 2 Gene Expressed Different MRNA Isoforms in the Peripheral Blood Made Ratna Saraswati; I Gusti Ngurah Kade Mahardika; Ketut Suastika; Sukma Oktavianthi; Herawati Sudoyo; Safarina G. Malik
Journal of Global Pharma Technology Volume 10 Issue 07: (2018) July 2018
Publisher : Journal of Global Pharma Technology

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

Abstract

Background: Single Nucleotide Polymorphisms (SNPs) of the Transcription Factor 7-Like 2 (TCF7L2) diabetes susceptibility gene were located in the noncoding region. Intronic SNP may play a role in mRNA splicing. This study aimed to elucidate whether SNPs of the TCF7L2 gene expressed different mRNA isoforms in the peripheral blood. Methods: Across sectional study was conducted in Legian Bali. A total of 56 subjects were grouped into carrier of TCF7L2SNPs (28 Balinese age 30-74 years,eitherheterozygote or mutant of the rs12255372 SNP [GT or TT], rs7903146 [CT or TT], and rs10885406 [AG or GG])and wild-type of TCF7L2 (28 matched in age and sex Balinese,rs12255372 [GG], rs7903146 [CC], and rs10885406 [AA])which has been identified in the previous study.In this study, the mRNA isolation was done using LS Trizol reagent (Nitrogen®) and variants of the mRNA isoform in the TCF7L2 gene was identified by reverse transcriptase-polymerase chain reaction (RT-PCR) method, using two pairs of overlapping primer.The first primer PCR products were grouped into Group-A, Group-B, Group-C and Group-D. The second primer PCR products were grouped into Group-a, Group-b, Group-c and Group-d. Oral glucose tolerant test (OGTT) was done to both groups.Blood samples were taken during fasting, at 1 hour and 2 hours after the oralglucose load, for blood glucose, and insulin level measurement. Results: There were seven pairs of the group combination including group A-a, A-c, A-d, C-a, C-c, C-dand D-c, and group C-c was the most commonly found among all subjects in this study (42.3%). Subjects with diabetes risk allele were 2.66 times more likely to express group C-ccompared to subjects without diabetes risk allele of SNPs in the TCF7L2 gene (95%CI 1.24–5.72 p=0.011). Mean response of insulin increment after oral glucose load among group C-c was higher compared with the non-group C-c, 84.63±41.01 vs. 62.02±38.09ng/ml (mean difference 22.61 95%CI 0.41–44.80 p=0.046). However, blood glucose level, fasting insulin, HOMA %B and HOMA IR were similar between the two groups. Conclusion: Variants of TCF7L2 gene expressed different mRNA isoformsin the peripheral blood.Compared to subjects without diabetes risk allele of SNPs in the TCF7L2 gene, subject with diabetes risk allele expressed dominant variant isoform mRNA 2.66 timeshigher.The higherresponse of insulin increment after oral glucosewas observedin the dominant variant which may reflectthe early condition of insulin resistant.Keywords: Diabetes, SNP TCF7L2, isoforms mRNA.
Co-Authors Ahmad Firdhaus Angga Yustiawan Budianto Budianto Firstdhitama, Wisnu Herawati Sudoyo I Gusti Ngurah Kade Mahardika Kiryanto Kiryanto Ma'ruf, Buana MADE RATNA SARASWATI . Meida Perwira Antartika Muhamad Ari Safarina G. Malik Samuel Samuel Sukma Oktavianthi Tebiary, An Apriyani Virliantarto, Noor Wibowo Nugroho