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ANALYSIS OF REPLACEMENT PART TIME INTERVAL DETERMINATION OF CRITICAL IN ENGINE WATER COOLANT PUMP TYPES KRI FPB57 Sutrisno Sutrisno; Abdul Rahman; Bambang Suharjo; Rachmana F Antariksa
JOURNAL ASRO Vol 11 No 1 (2020): International Journal of ASRO
Publisher : Indonesian Naval Technology College - Sekolah Tinggi Teknologi Angkatan Laut - STTAL

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (754.023 KB) | DOI: 10.37875/asro.v11i1.192

Abstract

Maintenance management is required and has a very vital role for a KRI types FPB57, considering the type KRI is one Alutsista Navy who have a high frequency activity, as well as the broad range of operations support capabilities are varied so that the automatic machine is also high activity and in the end reliability will decrease. Methodology Failure Mode Effects and Criticality Analysis (FMECA) is a widely recognized tool for the study and analysis of the reliability of the design or process. Many authors in the field have emphasized specifically the usefulness of this method and its limitations. At this writing considering the lifetime of the machine and the elements therein specifically the components of the water coolant pump has had a lifetime of more than 20 years, because it can be said that the components have entered a critical period. Based on the steps Failure Mode Effects and Criticality Analysis (FMECA) through the calculation of Risk Priority Number (RPN), so we can determine the critical components of acquired 9 of 19 chances damage that has critical component is Angular Bearings, Cylindrical Bearings, Spacer Ring, Water Seal, shaft Seal, Seal Slip Ring, Impeller, O'Ring and shaft. These components if damaged can lead to engine breakdown. From the optimization results indicate that the component replacement Cylindrical Bearings have the fastest time, ie 98 days. While the replacement of components with the longest time, which is a component Impeller 134 days. Besides obtain the most optimal replacement time of each component, also produced the cost of replacement is effective, it is proved by the value of the optimal CBR. CBR value for all types of components is less than 1 (CBR <1).Keywords : FMECA, Risk Priority Number, Reliability, Replacement Intervals,CBR.
STUDI ANALISA GAYA LIFT DAN BOW THRUSTER PADA PERANCANGAN HOVERCRAFT KELAS LCAC UNTUK MENDUKUNG OPERASI AMFIBI Sutrisno Sutrisno; Sutikno Wahyu Hidayat; Agoes Santoso
JOURNAL ASRO Vol 8 (2017): Jurnal Analisis Sistem & Riset Operasi
Publisher : Indonesian Naval Technology College - Sekolah Tinggi Teknologi Angkatan Laut - STTAL

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Abstract

Data di dunia menunjukkan bahwa pendaratan yang dapat dilaksanakan dengan cara konvensional adalah sekitar 20% pantai di dunia. Sedangkan 70% garis pantai hanya dapat didarati dengan menggunakan hovercraft. Hovercraft class LCAC adalah hovercraft yang memiliki kemampuan untuk mendukung dalam pelakasanaan operasi militer yang mampu mengangkut logistik maupun peralatan tempur lainnya. Sudah banyak di negara lain yang memilki hovecraft jenis ini. Sedangkan di Indonesia sendiri sementara hanya memiliki hovercrat yang digunakan untuk mengangkut personil saja. Berangkat dari hal tersebut maka kami mencoba menganalisa gaya Lift dan Bow Thruster dengan referensi berat total yang di hitung mahasiswa lainnya.Sehingga akan didapatkan besar gaya lift ,pemilihan jenis fan dan tipe mesin diesel yang sesuai serta akan di tampilkan juga gambar rencana umum sederhana sistem Lift dan Bow thruster hovercraft kelas LCAC ini yang memiliki dimensi konstruksi rangka panjang 18,7 meter, lebar 9,2 meter, tinggi 3 meter. Kata kunci: Hovercraft, lift, bow thruster.
ANALYSIS OF DEVELOPMENT STRATEGY OF TUBAN PUSLATPUR LOCATION TO SUPPORT MARINE TASKS USING SWOT AND ANP METHODS Sutrisno Sutrisno; Giani Ferianto; I Nengah Putra; I Made Jiwa
JOURNAL ASRO Vol 10 No 3 (2019): International Journal of ASRO
Publisher : Indonesian Naval Technology College - Sekolah Tinggi Teknologi Angkatan Laut - STTAL

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (382.792 KB) | DOI: 10.37875/asro.v10i3.164

Abstract

The Marine Corps Training Command or (Kolatmar) has the main task of carrying out plans and programs for building the capability of the training commands in the Marine Corps. The current problem is that the distance from the marine corps student education center in AAL, KODIKLATAL and PASMAR 2 soldiers in Surabaya is too faraway from Puslatpur in the Situbondo and Banyuwangi areas. The method used in conducting this research was a combination of SWOT Analysis with Analytical Hierarchy Process (ANP). IFE research calculation results were 3.29 while the EFE was 3.08, thus Putlatpur was placed in quadrant II in IE Matrix, the results of weighting strategy were by improving public facilities and supporting facilities of Puslatpur and Puslatpur organizations with support from the central government in increasing the ability of national defense (0.368707), fiscal increase of Indonesian Navy for the development of Puslatpur with support from the central government in enhancing the capability of national defense (0.179934), optimizing Puslatpur coastal's oceanography and logistical support for combat training with ANP processing (with a score of 0.104935), strengthening the legality of Puslatpur locations to avoid socio-cultural impacts in the surrounding community (0.072567), and reducing the socio-cultural impact of the community around the puslatpur with the Navy's strategic policy (0.029992).Keywords- SWOT, AHP, ANP, Internal, External
DETERMINATION OF ALTERNATIVE MAIN ENGINE IN IMPLEMENTING RE-ENGINE (CASE STUDY: KRI XYZ) Dedy Aryanto; Udisubakti Cipto Mulyono; Sutrisno Sutrisno
JOURNAL ASRO Vol 12 No 4 (2021): International Journal of ASRO
Publisher : Indonesian Naval Technology College - Sekolah Tinggi Teknologi Angkatan Laut - STTAL

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Abstract

KRI XYZ is one of the Ocean tugboats owned by the Indonesian Navy under the Garuda Ship Unit, which has a tactical nature to provide tug assistance for elements that experience damage or accidents at sea. Based on the letter of the Garuda Utama Commander Number B/947/V/2021 dated 19 May 2021, regarding Appreciation for the Replacement of the KRI XYZ Main Engine, a re-engine is required for the KRI XYZ. This study aims to determine the criteria, methods used and choose the appropriate and best Alternative type of MAIN ENGINE. There are four MAIN ENGINE A, B, C, and D Alternative engines. There are ten selection criteria grouped into benefit and risk criteria groups. The Analytical Hierarchy Process (AHP) method is used to support the selection of the best Alternative based on the criteria of benefit and level of risk, and BCR analysis is carried out for benefits and costs. The results of this study indicate that with the AHP method and BCR analysis, the selected Alternative is the best and feasible engine A (BCR>1) and has a low risk meaning that the Alternative is the most profitable if it is chosen as a replacement engine for MAIN ENGINE KRI XYZ. Keywords: Benefit, Cost, Risk, Analytical Hierarchy Process, Benefit-Cost Ratio
ANALISA PERANCANGAN SISTEM INSTALASI BAHAN BAKAR UNTUK MEMENUHI KEBUTUHAN KRI DI MAKO ARMATIM Sutrisno Sutrisno; Yudi Handoko; Heru Mirwanto
JOURNAL ASRO Vol 7 (2017): Jurnal Analisis Sistem & Riset Operasi
Publisher : Indonesian Naval Technology College - Sekolah Tinggi Teknologi Angkatan Laut - STTAL

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Abstract

Sistem instalasi bahan bakar mutlak diperlukan dalam rangka mendukung KRI untuk melaksanakan operasi. Kondisi dilapangan saat ini Mako Armatim belum memiliki suatu sistem instalasi bahan bakar. Selama ini untuk mendukung KRI dalam melaksanakan operasi menggunakan pipa instalasi bahan bakar milik Pertamina yang langsung di distribusikan dari bunker Pertamina sendiri. Akibatnya TNI AL menjadi sangat bergantung kepada kinerja Pertamina dan ini cukup menghambat. Karena itu penulis memiliki suatu gagasan untuk merancang suatu sistem instalasi bahan bakar yang harus dimiliki oleh TNI AL terutama di wilayah kerja Koarmatim. Dalam tugas akhir ini terlebih dahulu dilakukan perencanaan sistem instalasi pipa bahan bakar dimulai dari bunker, perpipaan, fitting serta support sebagai pendukung dari instalasi berdasarkan standard suatu desain instalasi pipa dengan kapasitas aliran 100 kL/jam. Tahap berikutnya adalah perhitungan Head yang meliputi Head loss sepanjang pipa karena gesekan antara bahan bakar dengan permukaan sepanjang pipa serta Head loss akibat adanya fitting pada instalasi sehingga akan didapatkan nilai Head total instalasi. Selain perhitungan secara manual juga dilakukan perhitungan secara numerik dengan menggunakan software pipe flow expert v5.12. Langkah selanjutnya adalah menentukan daya yang dibutuhkan baik pompa maupun motor untuk mengatasi head instalasi dan kapasitas aliran yang dirancang serta melakukan pemilihan pompa yang sesuai. Kata kunci: Sistem instalasi Bahan bakar, Head loss, software pipe flow expert v5.12
DISTRIBUSI SIFAT MEKANIK SEBAGAI AKIBAT LAKU PANAS YANG BERBEDA PADA MATERIAL MILD STEEL GRADE A DI KRI NALA-363 Sutrisno Sutrisno; Chris Rinaldi; Agung Budi Kurniawan
JOURNAL ASRO Vol 5 (2016): Jurnal Analisis Sistem & Riset Operasi
Publisher : Indonesian Naval Technology College - Sekolah Tinggi Teknologi Angkatan Laut - STTAL

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Abstract

Pada tahun 2009 yang lalu KRI Nala – 363 yang merupakan kapal perang tipe Korvet TNI Angkatan Laut mengalami kebakaran di Laut Jawa. Prosedur pemadaman kebakaran di kapal telah dilaksanakan, mulai dari pemadaman dengan menggunakan CO2 Central, APAR (Alat Pemadam Api Ringan), sampai dengan menggunakan Hydrant. Kejadian tersebut memakan waktu kurang lebih 1 jam. Dari kejadian tersebut, maka timbul permasalahan apakah plat yang telah mengalami kebakaran tersebut masih layak digunakan atau tidak. Dari permasalahan diatas, maka dilakukan sebuah simulasi dengan menggunakan Heat Treatment material yang sama dengan material plat lambung KRI Nala – 363 yang terbakar, yaitu material Mild Steel Grade A. Untuk memperoleh hasil yang optimal, maka dalam penelitian ini akan divariasikan besarnya waktu penahanan (Holding Time) yaitu 10 menit, 30 menit dan 60 menit serta variasi media pendingin yaitu udara, oli bekas, busa pemadam, dan air laut. Hasil pengujian kekerasan Brinnell menunjukkan bahwa spesimen awal mempunyai nilai kekerasan 151 HB. Setelah mengalami proses laku panas, ternyata spesimen yang mendapatkan quenching air laut mempunyai nilai kekerasan yang paling tinggi yaitu 222 HB untuk waktu tahan 10 menit, 151 HB untuk waktu tahan 30 menit, dan 199 HB untuk waktu tahan 60 menit. Sedangkan untuk spesimen yang mendapatkan quenching udara, oli bekas, dan busa pemadam nilai kekerasan relatif sama dengan spesimen awal. Data ini bersesuaian dengan hasil uji tarik, yang menunjukkan spesimen yang didinginkan dengan air laut mempunyai Tensile Strength yang paling tinggi. Sehingga spesimen yang mendapatkan quenching menggunakan air laut tidak dapat dipergunakan lagi, karena sifat mekaniknya berubah secara signifikan dibandingkan spesimen awal. Kata kunci: Holding time, quenching, heat treatment/laku panas, metalografi test, ferrite, pearlite
DESIGN FREE SURFACE TANK ON FAST MISSILE BOAT 60M Sutrisno Sutrisno; Andi Mawanto; Wawan Kusdiana; Cahya Kusuma
STTAL POSTGRADUATE - INTERNATIONAL CONFERENCE Vol 4 No 1 (2020): Indonesia Naval Technology College STTAL Postgraduate International Conference -
Publisher : Indonesian Naval Technology College STTAL

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Abstract

Rolling motion is important role in the stability of the ship. Predicting the motion of a ship design must be done to see the design performance. The magnitude of the resulting motion response will affect the comfort and safety of personnel and materials in the ship. For this reason, simulation and analysis rolling and pitching prediction are carried out when the ship is operating, with and without the addition of a free surface tank (FST) as a stabilizer system with variations in the FST base height, water volume, boat velocity, heading direction and the waves. The prediction of ship motion in this research is ushing shipmo software and to assess operational feasibility, the general criteria standard issued by NATO STAGNAG 4154 (US. Navy) and US Coast Guard. From the simulation results it was found that increasing the height of the FST base from the base line decreases rolling motion. At a height of 4 m the maximum response magnitude below the allowable standard is 3,365 deg, while at a height of 3 m above the allowable standard that is 4,734 deg. The addition of FST and variations in placement of the FST base height from the base line did not significantly affect the pitching motion of the ship. Heading direction, waves and operational speed of the ship need to be considered to get the minimum rolling motion response when the ship is operating. Keywords: Fast Missile Boat 60M, Free Surface Tank, Pitching, Rolling, Shipmo.
ASSESSMENT OF OCCUPATIONAL SAFETY AND HEALTH RISKS BASED ON A RISK MANAGEMENT SYSTEM AND THE SELECTION OF ALTERNATIVE IMPROVEMENTS Dedy Aryanto; Sutrisno Sutrisno; Priyadi Hartoko
STTAL POSTGRADUATE - INTERNATIONAL CONFERENCE Vol 5 No 1 (2021): Indonesia Naval Technology College STTAL Postgraduate International Conference -
Publisher : Indonesian Naval Technology College STTAL

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Abstract

Work accidents, especially in the industrial world, must be an essential concern because they involve and individual health and safety in the surrounding environment. At Squadron 900 / Fasharkan Puspenerbal Juanda, there were quite a lot of work accidents. The causes of work accidents vary, from mechanical aspects (equipment and machines) to parts of hazardous materials. The use of Hazmat mainly causes work accidents in squadron 900/Fasharkan, primarily in department IV. Therefore in this study only discuss hazardous materials as a cause of work accidents. The research conducted is the identification of risks in department IV ( Department of Frame, AKP and Motor ) Squadron 900 / Fasharkan, especially the Division of Frame and Mechanical Division using the approach of Risk Management System. In this approach, a risk ranking is carried out using FMEA, and further efforts a made to make improvements to reduce the risk of hazards. The improvement efforts- selected from several alternative solutions that have made using the NPV approach. With the Net Present Value approach, it is possible to compare the existing alternative solutions financially. Keywords: Risk Management, Occupational Health and Safety (K3), Hazardous materials, Net Present Value (NPV)
APPLICATION OF IMPORTANCE PERFORMANCE ANALYSIS (IPA) AND CUSTOMER SATISFACTION INDEX (CSI) METHOD TO ANALYZE INDONESIAN NAVAL 2ND FLEET COMMAND MATERIEL SERVICE PERFORMANCE Juni Heri Budianto; Abdul Rahman; Sutrisno Sutrisno
STTAL POSTGRADUATE - INTERNATIONAL CONFERENCE Vol 4 No 1 (2020): Indonesia Naval Technology College STTAL Postgraduate International Conference -
Publisher : Indonesian Naval Technology College STTAL

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Abstract

ABSTRACT Indonesian naval 2nd fleet command materiel service (Dismatbek) is responsible for fulfilling all Indonesian warship (KRI) spare parts material, distribution of individual equipment and distribution of oil and lubricant fuel needs for KRI and other user. In order to increase the services, a research is needed to analyze the performance of service attributes provided by Indonesian naval 2nd fleet command materiel service. By using the Importance Performance Analysis (IPA) method, will be known the service attribute position in quadran analysis , and to know the satisfaction level of the user, it can use the Customer Satisfaction Index (CSI) method, the result get a value of 71.4%, even if it is in the category of satisfied (66% - 80%) there are still 4 attributes from 12 service attributes located in the first quadrant wich means it is need to be fixed immediately so the level of satisfaction level will be better. Keywords: Service Attributes, Importance Performance Analysis, Quadran Analysis, Customer Satisfaction Index
ANALYSIS OF THE ACCELERATION TIME AND OPTIMAL COSTS OF THE SHIPBUILDING PROJECT SPECIFIED IN THE ELECTRICAL SYSTEM WITH THE CRITICAL PATH METHOD Agung Tresnadi; Suparno Suparno; Sutrisno Sutrisno
STTAL POSTGRADUATE - INTERNATIONAL CONFERENCE Vol 4 No 1 (2020): Indonesia Naval Technology College STTAL Postgraduate International Conference -
Publisher : Indonesian Naval Technology College STTAL

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Abstract

ABSTRACT PT PAL Indonesia (Persero) is one of the strategic defense industries that produces Main Weapon Systems (Alutista) especially for the Indonesian Navy, and has a strategic role in supporting the development of the national marine industry. One of the benchmarks for the success of a new shipbuilding project is the length of time to complete both the stages of the production process and the entire project in addition to cost and quality of work. Therefore, research was conducted to optimize the planning of the production process time for a new shipbuilding project by creating a project network, looking for critical activities, and calculating the project duration. The method used to analyze costs and time is the critical path method, by accelerating the duration of activities that are on the critical path, then calculating changes in project costs that occur due to acceleration. The research objective with this critical path method is to determine the time and cost of the project and what activities are included in critical activities. In addition, it is also to control and coordinate various activities so that the project can meet the right timeframe and can also help companies plan and control projects in a more efficient time and cost. From the results of the analysis of project calculations during the initial conditions with normal working days without using overtime the company spent Rp. 1,963,108,000. Critical activities in initial conditions with 870 days for completion time conditions are accelerated by 710 days (total acceleration 160 days) with 16 critical trajectories covering 34 work activities where all activities enter critical trajectories. The difference between the initial working conditions and the accelerated conditions was 160 days. The new ship building project in the electrical system can be accelerated for 160 days at an additional cost of Rp. 3,525,214,127. Keywords: Shipbuilding project, Critical Path Method, Acceleration of time, and costs.
Co-Authors Abdul Rahman Agoes Santoso Agung Budi Kurniawan Agung Tresnadi Ahmadi Ahmadi Amri Rahmatullah Andi Mawanto Anton Nugroho Arie Handito Arief Saepullah Ary Kurniawan As'ad Aris Mustofa Avando Bastari Ayip Rivai Prabowo Bagiyo Herwono Bambang Suharjo Cahya Kusuma Chris Rinaldi Dedy Aryanto Deni Kristanto Djoko Kriswanto Giani Ferianto Heru Mirwanto I Made Jiwa I Made Jiwa Astika I Nengah Putra I Nengah Putra A Irfan Syarif Arief Juni Heri Budianto Mohamad Faikhul Himam Muhammad Askhuri Muhammad Syaifi Muhendi Muhendi Muksin Muksin Novi Shobi Okol S Suharyo Okol Sri Suharyo Priyadi Hartoko Putra, I Nengah R Fajar Antariksa Rachmana F Antariksa Raditya Novianto Rakhmad Susilo Setiawan Bernadi Sunarta Sunarta Suparno Suparno Suparno, Suparno Sutikno Wahyu Hidayat Udisubakti Cipto Mulyono Udisubakti Cipto Mulyono Udisubakti Ciptomulyono wawan kusdiana Yudha Sukma Perdana Yudi Handoko Zainal Syahlan