International Journal of Marine Engineering Innovation and Research
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Marine Engineering Innovation and Research, International Journal of ( Department of Marine Engineering, Faculty of Marine Technology, Institut Teknologi Sepuluh Nopember, Surabaya 60111 )

International Journal of Marine Engineering Innovation and Research Vol 2, No 4 (2018)
Publisher : Institut Teknologi Sepuluh Nopember Surabaya 60111, Indonesia

Show Abstract | Original Source | Check in Google Scholar | Full PDF (124.708 KB) | DOI: 10.12962/j25481479.v2i4.4336

Abstract

Analysis of Erosion Rate on Discharge Slurry HDPE Pipe in Canal Water Intake PLTGU Grati using CFD Simulation

Santoso, Agoes ( Department of Marine Engineering Faculty of Marine Technology Institut Teknologi Sepuluh Nopember Surabaya ) , Ilmi, Bahrul ( Department of Marine Engineering Faculty of Marine Technology Institut Teknologi Sepuluh Nopember Surabaya )

International Journal of Marine Engineering Innovation and Research Vol 2, No 4 (2018)
Publisher : Institut Teknologi Sepuluh Nopember Surabaya 60111, Indonesia

Show Abstract | Original Source | Check in Google Scholar | Full PDF (556.588 KB) | DOI: 10.12962/j25481479.v2i4.4063

Abstract

The dredging of the canal water intake at PLTGU Grati is an effort to maintain the depth of the reduced canal due to sedimentation. The dredging process itself uses a cutter suction dredger. To distribute mud or slurry (a mixture of water and sand) result of dredging to dumping area of  PLTGU Grati using HDPE (high-density polyethylene), as pipe material, hence pipe does not wear due to corrosion but erosion. Basically, erosion is caused by impact of solid particle (sand) which is suspended inflow (multiphase) on a solid wall boundary. Wear caused by erosion itself is recognized as one of the problems in some industries that distribute slurry in their process. This research thesis analyzes and predicts the rate of erosion occurring in HDPE pipes that are transported slurry from the sedimentation dredging in PLTGU Grati using CFD (computational fluid dynamic) method. Variations of slurry concentration, impact angle, particle diameter and velocity of the slurry has been be performed to determine the effect on the rate of erosion. The results of this research thesis showed that the concentration of slurry, impact angel, diameter of particle and the concentration of the slurry were directly proportional to the rate of erosion on the HDPE pipe.

Risk Assessment in Financial Feasibility of Tanker Project Using Monte Carlo Simulation

Zaman, Muhammad Badrus, Priyanta, Dwi, Trisilo, Filik ( Institut Teknologi Sepuluh Nopember )

International Journal of Marine Engineering Innovation and Research Vol 1, No 4 (2017)
Publisher : Institut Teknologi Sepuluh Nopember Surabaya 60111, Indonesia

Show Abstract | Original Source | Check in Google Scholar | Full PDF (715.14 KB) | DOI: 10.12962/j25481479.v1i4.2703

Abstract

Every ship project would not be apart from risk and uncertainty issues. The inappropriate risk assessment process would have long-term impact, such as financial loss. Thus, risk and uncertainties analysis would be a very important process in financial feasibility determination of the project. This study analyzes the financial feasibility of 17,500 LTDW tanker project. Risk and uncertainty are two differentiated terminologies in this study, where risk focuses on operational risk due to shipbuilding process nonconformity to shipowner finance, while uncertainty focuses on variable costs that affect project cash flows. There are three funding scenarios in this study, where the percentage of funding with own capital and bank loan in scenario 1 is 100% : 0%, scenario 2 is 75% : 25%, and scenario 3 is 50% : 50%. Monte Carlo simulation method was applied to simulate the acceptance criteria, such as net present value (NPV), internal rate of return (IRR), payback period (PP), and profitability index (PI). The results of simulation show that 17,500 LTDW tanker project funding by scenario 1, 2 and 3 are feasible to run, where probability of each acceptance criteria was greater than 50%. Charter rate being the most sensitive uncertainty over projects financial feasibility parameters.

Development of Marine and Coastal Tourism Based on Blue Economy

Tegar, Dimas ( Department of Marine Engineering, Faculty of Marine Technology, Institut Teknologi Sepuluh Nopember, Surabaya 60111 ) , Saut Gurning, Raja Oloan ( Department of Marine Engineering, Faculty of Marine Technology, Institut Teknologi Sepuluh Nopember, Surabaya 60111 )

International Journal of Marine Engineering Innovation and Research Vol 2, No 2 (2018)
Publisher : Institut Teknologi Sepuluh Nopember Surabaya 60111, Indonesia

Show Abstract | Original Source | Check in Google Scholar | Full PDF (174.428 KB) | DOI: 10.12962/j25481479.v2i2.3650

Abstract

Marine and coastal tourism as one of the largest segments of the maritime economy sector, as well as the largest component of the tourism industry, often leads to controversy over environmental  impact  and  compatibility  with  other  human  activities.  The  application  of economic  and  tourism concepts  that  are  oriented  towards  environmental  conservation  and natural resources is one option to overcome the problem. The Blue Economy concept offers an economic concept based on ecosystem principles, where the development will not only generate economic growth but also ensure ecological and social sustainability. In addition, the concept of ecotourism also offers a tourism activity that prioritizes aspects of nature conservation and improving the welfare of the community

Study Of Calculation Of Degaussing System For Reducing Magnetic Field From Submersible Vehicle

Sarwito, Sardono, Prananda, Juniarko, Koenhardono, Eddy Setyo, Kurniawan, Anggela Wahyu

International Journal of Marine Engineering Innovation and Research Vol 1, No 2 (2017)
Publisher : Institut Teknologi Sepuluh Nopember Surabaya 60111, Indonesia

Show Abstract | Original Source | Check in Google Scholar | Full PDF (418.82 KB) | DOI: 10.12962/j25481479.v1i2.1979

Abstract

The rapid development of maritime technology in the world to make Indonesia are also increasingly taking the development of maritime technology, such as in a Submersible Vehicle one is degaussing system, this technology should be owned by the vessel so that the vessel can avoid dangerous explosive equipment contained in the sea. Degaussing system is a system that is in use on the metal parts or electronic devices that are at risk of a magnetic field. This system is used to prevent the vessel from dangerous equipment in the sea which can trigger an explosion and the damage that utilize magnetic fields as a metal-detection sensor when the boat was doing dives. To the authors will plan the design degaussing system, and calculating the system in order to reduce the magnetic properties of the Submersible Vehicle which were obtained by the use of Coil Degaussing along 214,5 meters, a diameter of 0,2, with 500.000 coil that will generate a current of 0,0157 Amperes 0.0787 Tesla generates a magnetic field.

Efficiency Analysis of Additions of Ice Flake in Cargo Hold Cooling System of Fishing Vessel

Amiadji, Amiadji ( Department of Marine Engineering, Institut Teknologi Sepuluh Nopember, Surabaya 60111, Indonesia ) , Djatmiko, Edi ( Department of Marine Engineering, Institut Teknologi Sepuluh Nopember, Surabaya 60111, Indonesia ) , Prasetyo, Yosef Novian ( Sepuluh Nopember Institute of Technology )

International Journal of Marine Engineering Innovation and Research Vol 1, No 3 (2017)
Publisher : Institut Teknologi Sepuluh Nopember Surabaya 60111, Indonesia

Show Abstract | Original Source | Check in Google Scholar | Full PDF (253.546 KB) | DOI: 10.12962/j25481479.v1i3.2033

Abstract

As a maritime nation, the majority of peoples livelihood in Indonesia coast is as a fishermen. The process of preserving fish after being caught will determine how good the product quality. One of process on preserving fish that can be done is to perform the cooling process using a cooling machine on board. Refrigeration system certainly requires high electrical power consumption. That high power usage can be reduced as much as possible, one of which is to add chopped ice (ice flake) on a fishing boat cargo space. So that the load for cooling can be reduced.The purpose of this thesis is to find out how the influence of the addition of ice flake on cooling load in the cargo hold of fishing vessels, and to know how much power is used when the cooling machine is combined with the addition of ice flake. In this analysis cooling load calculation refers to the standard ISO 7547.from the results of analysis found that the addition of ice flake on cargo space can reduce cooling load and can reduce electricity consumption day in the main vessel for the addition comparison flake ice and fish weight of 1: 1.

Analysis of the Suppression Device as Vortex Induced Vibration (VIV) Reducer on Free Span using Finite Element Method

Priyanta, Dwi ( Departement of Marine Engineering, Institut Teknologi Sepuluh Nopember, Surabaya 60111 ) , Abdullah, Anang

International Journal of Marine Engineering Innovation and Research Vol 1, No 1 (2016)
Publisher : Institut Teknologi Sepuluh Nopember Surabaya 60111, Indonesia

Show Abstract | Original Source | Check in Google Scholar | Full PDF (384.48 KB) | DOI: 10.12962/j25481479.v1i1.1387

Abstract

Subsea pipeline is a transportation infrastructure of oil and gas as an alternative for ship tanker. The uneven topography surface of the sea floor resulting the pipe undergoes free span. The free span is a condition endured by the pipe where the pipe position has  distance or gap with the seabed supported by two pivot. The free span is at risk of experiencing a vibration caused by the presence of dynamic load that is current and the wave. The vibration that occurs is the impact of the presence of the phenomenon of Vortex Induced Vibration (VIV). The Phenomenon Of VIV occur on a cylindrical component caused by ocean currents, causing the occurrence of vibration by the movement of fluid on the pipe so that it raises the vortex at the rear of the direction of oncoming flow. One way to dampen or reduce the impact of VIV is by adding suppresion device. VIV suppression device is a tool that is installed on the pipeline on offshore piping installationcthat serves to dampen or reduce the impact of VIV. One of the simulations used to know the characteristics of a fluid is to use (CFD) Computational Fluid Dynamic. With the addition of suppression device can add the rest of the operating time on a free span of affected VIV, on the condition of free span critical exposed VIV (Vortex Induced Vibration value) has a life time on plain pipe 44.21 years, on pipe with 53.09 years and Fairing on the pipe with the Helical strike 52.95 year.

Design of 100 MW LNG Floating Barge Power Plant

Ariana, I Made ( Department of Marine Engineering, Institut Teknologi Sepuluh Nopember, Surabaya, 60111, Indonesia ) , Prastowo, Hari ( Department of Marine Engineering, Institut Teknologi Sepuluh Nopember, Surabaya, 60111, Indonesia ) , Paruna, Aldio ( Department of Marine Engineering, Institut Teknologi Sepuluh Nopember, Surabaya, 60111, Indonesia. )

International Journal of Marine Engineering Innovation and Research Vol 1, No 3 (2017)
Publisher : Institut Teknologi Sepuluh Nopember Surabaya 60111, Indonesia

Show Abstract | Original Source | Check in Google Scholar | Full PDF (1178.298 KB) | DOI: 10.12962/j25481479.v1i3.1997

Abstract

Floating bargepower plant able to supply amount of electricity to undeveloped island in Indonesia. In this research, the generator will be use in the power plant is dual-fuel engine. The process was determine the engine and every equipment along with its configuration then arrange the equipment. The result, MAN18V51/60DF selected along with its system configuration and its general arrangement. The final design enable 7.06 days of operation with daily average load (64.76 MW) or 4.57 days with continues 100 MW load. In the end, the mobile power plant can be built on Damen B32SPo9832 Barge and comply with the regulationfloating bargepower plant able to supply amount of electricity to undeveloped island in Indonesia. In this research, the generator will be use in the power plant is dual-fuel engine. The process was determine the engine and every equipment along with its configuration then arrange the equipment. The result, MAN18V51/60DF selected along with its system configuration and its general arrangement. The final design enable 7.06 days of operation with daily average load (64.76 MW) or 4.57 days with continues 100 MW load. In the end, the mobile power plant can be built on Damen B32SPo9832 Barge and comply with the regulation

The Usage of Crumb Rubber Filtration and UV Radiation for Ballast Water Treatment

Pitana, Trika, Shovitri, Maya, Fauzi, Haris Nur ( Institut Teknologi Sepuluh Nopember )

International Journal of Marine Engineering Innovation and Research Vol 2, No 1 (2017)
Publisher : Institut Teknologi Sepuluh Nopember Surabaya 60111, Indonesia

Show Abstract | Original Source | Check in Google Scholar | Full PDF (345.982 KB) | DOI: 10.12962/j25481479.v2i1.2610

Abstract

This research is aimed to build ship’s ballast water treatment prototipe that used to inactivate microbial water patogen in ballast water to produce unpolluted ballast water that can be standardised by IMO Ballast Water Management Convention. A simple concept that used in the development of this prototype is by draining ballast water with capacity at 5 lpm, 10 lpm and 20 lpm into alternative filtration crumb rubber and UV reactor. In the filtration process using crumb rubber, ballast water will be filtered with the precision filtration up to 50 micron, while in the UV reactor ballast water will be illuminated by UV-C with maksimum dose 16,58 mW/cm2. Finally,the study shows the performance of alternative filtration of crumb rubber and UV-C irradiation on microbial water phatogen, and at what UV-C dose ballast water treatment prototipe can inactivate  microbial water phatogens, which are complying with IMO Ballast Water Management Convention ANNEX D.This research is aimed to build ship’s ballast water treatment prototipe that used to inactivate microbial water patogen in ballast water to produce unpolluted ballast water that can be standardised by IMO Ballast Water Management Convention. A simple concept that used in the development of this prototype is by draining ballast water with capacity at 5 lpm, 10 lpm and 20 lpm into alternative filtration crumb rubber and UV reactor. In the filtration process using crumb rubber, ballast water will be filtered with the precision filtration up to 50 micron, while in the UV reactor ballast water will be illuminated by UV-C with maksimum dose 16,58 mW/cm2. Finally,the study shows the performance of alternative filtration of crumb rubber and UV-C irradiation on microbial water phatogen, and at what UV-C dose ballast water treatment prototipe can inactivate  microbial water phatogens, which are complying with IMO Ballast Water Management Convention ANNEX D.

Technical Review of Fin Addition Analysis of Air Intake Valve on Gas-Oil Fuel Engine

Semin, Semin ( Department of Marine Engineering, Faculty of Marine Technology, Institut Teknologi Sepuluh Nopember, Surabaya 60111 ) , Aras RFC, Linggar Palang, Cahyono, Beny ( Department of Marine Engineering, Faculty of Marine Technology, Institut Teknologi Sepuluh Nopember, Surabaya 60111 ) , Octaviani, Nilam Sari

International Journal of Marine Engineering Innovation and Research Vol 2, No 3 (2018)
Publisher : Institut Teknologi Sepuluh Nopember Surabaya 60111, Indonesia

Show Abstract | Original Source | Check in Google Scholar | Full PDF (429.344 KB) | DOI: 10.12962/j25481479.v2i3.3782

Abstract

Modification of single-fuel diesel engine into dual-fuel diesel engine has been done by researchers to solve the problem of depletion petroleum reserves. Even the problem petroleum reserves are projected to be exhausted in the next 50 years. Gas-Oil fuel engine focus on solar-CNG as a fuel. Explanation of the difference in the fuel ratio of diesel engines with Gas-Oil fuel diesel engines has considerable differences. The factors that are discussed here are the factors of mixing air and fuel. The amount of fuel in the Gas-Oil fuel diesel engine causes an increase in the gas fuel mass flow rate (CNG), although with the addition of fuel gas, the mass flow rate of diesel oil is reduced. In this paper, the Gas-Oil fuel engines research and development fueled using solar-CNG are highlighted to keep the performance of the engine. Modification focused on air intake valve to give maximum turbulent flow ratio and effect on increasing Gas-Oil fuel engine performance. The high activities for future Gas-Oil fuel engines  research and development to meet future Gas-Oil fuel engine solar-CNG is recorded in the paper.

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