scholarly journals Evaluasi Kebutuhan Udara Ventilasi Untuk Kamar Mesin Karena Penggantian Rpm Motor Penggerak Axial Fanpada Kapal Perintis 2000GT Berpenggerak Mesin Induk (Main Engine) 2 x 1400HP

Eksergi ◽  
2019 ◽  
Vol 15 (1) ◽  
pp. 7
Author(s):  
Ratna Dwi Kurniawan
Keyword(s):  
Engine Room ◽  
Engineering Department ◽  
Marine Engineering ◽  
Main Engine

<p>Sistem ventilasi udara untuk kamar mesin (engine room) memegang peranan sangat pentinng sekali, sebagai suplai udara pembakaran mesin dan mendinginkan udara di ruang kamar mesin. Jika suplai bahan bakar kekurangan udara/oksigen (O2) berpengaruh pada power yang dihasilkan, sehingga effisiensi turun. Latar belakang penulisan karena adanya penggantian putaranmotor fan/blower penyuplai udara ventilasi untuk main engine, sehingga perlu di lakukan perhitungan ulang untuk mendapatkan kebutuhan udara yang sesuai dengan kebutuhan. Metode ASHRAE dan ISO 8861 telah digunakan peneliti lain pada kapal sejenis di lain galangan. Sebagai bahan pembanding, metode yang digunakan dalam penelitian ini adalah penggunaan user guide dari marine engineering department yang lebih sederhana.Dari hasil evaluasi diketahuikebutuhan untuk udara pembakaran main engine 5259,39 m3/h paling kecil diantara metode lain, tetapi total kapassitas udara untuk pembakaran main engine dan difusi panas, berada diantara metode ASHARE dan ISO 8861, yaitu sebesar 23.053,37cfm sedang kapasitas fan yang tepasang 30000cfm,</p>

APPLICATION OF FUZZY ANALYTIC HIERARCHY PROSES FOR ERROR DETECTION OF AUXILARY SYSTEMS OF SHIP MAIN DIESEL ENGINES

2021 ◽  
Vol 157 (A2) ◽  
Author(s):  
H Demirel ◽  
K Ünlügençoğlu ◽  
F Alarçin ◽  
A Balin
Keyword(s):  
Diesel Engine ◽  
Error Detection ◽  
Cooling System ◽  
Detection System ◽  
Analytic Hierarchy ◽  
Engine Room ◽  
Air Supply ◽  
Solution Methods ◽  
Marine Engineering ◽  
Main Engine

Ship engine room has a structure which has to meet a number of needs with regard to administrative conditions. Therefore, when the complicated structure of engine room are considered, even a simple mechanical failure, if no measures taken abruptly, grows into irreversible condition, causing losses that cannot be compensated. A well-qualified ship engine conductor along with an effective error detection system is needed to detect failure and act immediately against any engine impairments possible. This study aims to manage troubleshooting in main engine auxiliary systems which cover cooling, lubricating and cooling oil and fuel systems. The study is also thought to be a good reference for maintenance processes for marine engineering operators. Breakdown of main engine equipment are examined and troubles hooting program is developed for using Fuzzy Analytic Hierarchy Process (F-AHP) determine solution methods and causes of such breakdowns. In this paper, a fuzzy Multi Criteria Decision Making (MCDM) methodology was proposed to determine the most effected system of the ship main diesel engine. The results showed that fuel system was the most effected alternative, as being followed subsequently by cooling system, governor system, air supply system and oiling system. The results were based upon the opinions of three experts groups who ranked the ship main diesel engine systems alternatives according to twenty-nine criteria expert selected.

Application of Fuzzy Analytic Hierarchy Proses for Error Detection of Auxilary Systems of Ship Main Diesel Engines

2015 ◽  
Vol 157 (A2) ◽  
pp. 105-112
Keyword(s):  
Diesel Engine ◽  
Error Detection ◽  
Cooling System ◽  
Detection System ◽  
Analytic Hierarchy ◽  
Engine Room ◽  
Air Supply ◽  
Solution Methods ◽  
Marine Engineering ◽  
Main Engine

Ship engine room has a structure which has to meet a number of needs with regard to administrative conditions. Therefore, when the complicated structure of engine room are considered, even a simple mechanical failure, if no measures taken abruptly, grows into irreversible condition, causing losses that cannot be compensated. A well-qualified ship engine conductor along with an effective error detection system is needed to detect failure and act immediately against any engine impairments possible. This study aims to manage troubleshooting in main engine auxiliary systems which cover cooling, lubricating and cooling oil and fuel systems. The study is also thought to be a good reference for maintenance processes for marine engineering operators. Breakdown of main engine equipment are examined and troubles hooting program is developed for using Fuzzy Analytic Hierarchy Process (F-AHP) determine solution methods and causes of such breakdowns. In this paper, a fuzzy Multi Criteria Decision Making (MCDM) methodology was proposed to determine the most effected system of the ship main diesel engine. The results showed that fuel system was the most effected alternative, as being followed subsequently by cooling system, governor system, air supply system and oiling system. The results were based upon the opinions of three experts groups who ranked the ship main diesel engine systems alternatives according to twenty-nine criteria expert selected.

Lessons from Emma Maersk Flooding – February 2013

2015 ◽  
Author(s):  
Chilukuri Maheshwar
Keyword(s):  
Lessons Learned ◽  
Suez Canal ◽  
Container Ship ◽  
Engine Room ◽  
Mechanical Breakdown ◽  
Engine Cylinder ◽  
The Cost ◽  
Main Engine

In February 2013, in the 2005 built 15500 TEU 397m long container ship EMMA MÆRSK a severe leakage occurred in as it was passing southbound through the Suez Canal. The leakage occurred due to mechanical breakdown of a stern thruster causing flooding of the shaft tunnel and filling up the engine room with 14000 m³ of seawater within a span of two hours, submerging the main engine cylinder heads-level equal to the outside water draft of 15.1 m. The cost of repairs and loss of revenue for six months amounted to a few million dollars. This paper highlights some of the lessons learned from this incident.

The Development of Interactive Marine Incinerator Operational Training System Based on Web3D

2014 ◽  
Vol 989-994 ◽  
pp. 4277-4280
Author(s):  
Wen Long Yao
Keyword(s):  
Real Time ◽  
Training System ◽  
System Structure ◽  
Equipment Management ◽  
Time Interaction ◽  
Engine Room ◽  
Training Mode ◽  
New Type ◽  
Marine Engineering ◽  
Engineering Training

In this paper, the design scheme, technical route and system structure of the interactive marine incinerator operation training system based on Web3D are proposed based on the study of the marine engine room simulator project. The virtual reality technique, visual C# and IE real-time interaction technology are introduced to the marine incinerator operation training system and the development thoughts of the interactive marine incinerator operation training system based on Web3D are elaborated based on the 3D modeling optimization and real-time interaction technology. This study is a new type of marine engineering training mode, it can better meet the STCW convention in Manila amendments on incinerator equipment management requirements.

A Fuzzy DEMATAL Model Proposal for the Cause and Effect of the Fault Occuring in the Auxiliary Systems of the Ships' Main Engine

2018 ◽  
Vol Vol 160 (A2) ◽  
Author(s):  
A Balin ◽  
H Demirel ◽  
E Celik ◽  
F Alarcin
Keyword(s):  
Decision Making ◽  
Error Detection ◽  
Detection System ◽  
Causal Effect ◽  
Complex Structure ◽  
Fuel Oil ◽  
Fuzzy Dematel ◽  
Engine Room ◽  
Engine Failure ◽  
Main Engine

The ship engine room has a structure that meets a number of needs related to administrative conditions. Even if a simple mechanical error is considered to be the addition of human errors into the complex structure of the engine room, it can lead to undetected loss. How the causes and effects of the detected faults affect the system is as important as an effective fault detection system to detect the fault and take immediate action against any possible engine failure. This study reveals the causes of problems occurring in the main engine auxiliary systems including cooling, lubricating, cooling oil and fuel systems, and the extent of these problems affecting the system. While the Decision Making Trial and Evaluation Laboratory supports to identify and analyze the error detection of auxiliary systems with respect to causal effect relation diagram, fuzzy sets deal with the uncertainty in decision-making and human judgements through the DEMATEL. Therefore, fuzzy DEMATEL approach is applied to examine the causes and the weights of the faults and their relation to each other in the auxiliary systems. When we look at the result of the proposed approach, fuel oil pump failures has more impact on the all system and air cooler problems has the second highest place among the all errors.

scholarly journals Measurement of small vessel machinery vibration induced acoustic signature levels

2019 ◽  
Vol 16 (2) ◽  
pp. 87-98 ◽  
Author(s):  
GVV Pavan Kumar ◽  
V V S Prasad ◽  
B H Nagesh
Keyword(s):  
Pressure Fluctuations ◽  
Response Spectra ◽  
Underwater Sound ◽  
Underwater Noise ◽  
Noise Levels ◽  
Small Vessels ◽  
Performance Point ◽  
Engine Room ◽  
Airborne Noise ◽  
Main Engine

Ship vibrations, airborne and underwater noise levels have always been a challenging topic from a performance point of view in ship design, building and operation. The measurement shall help in monitoring the self-noise and the technical state of their machinery mechanism. The vibration levels on the main engine and auxiliary Genset foundation, airborne noise levels of the engine room and underwater self-noise levels of a small mechanized fishing trawler was measured at the jetty in idling condition.  The vibration levels on the foundation measured the average value of 0.207 mm/s for the main engine and 1.36 mm/s for auxiliary Genset. The airborne noise levels measured 99 dB (A) in the engine room. The peak underwater sound pressure levels measured 162 dB re 1µPa. The response spectra indicate the peak vibration and noise levels in the lower frequency region <1.2 kHz. The machinery excitation forces transferred to the hull surface as pressure fluctuations which generated the airborne and underwater noise levels. Though the measurement limited to jetty conditions, detailed analysis can be useful for detection, classification, and tracking of small vessels.

Training Simulator Design for a Marine Engine Room at Different Levels of Fidelity

1983 ◽  
Vol 27 (12) ◽  
pp. 1001-1005
Author(s):  
T. Govindaraj ◽  
Yuan-Liang Su
Keyword(s):  
Complex System ◽  
Supervisory Control ◽  
Control Mode ◽  
Training Simulator ◽  
Marine Engine ◽  
Engine Room ◽  
Simulator Design ◽  
Marine Engineering ◽  
Different Levels ◽  
Engineering Personnel

A marine powerplant on a large supertanker is a complex system made up of a number of interconnected subsystems where most functions are automated. A human operator manages the system in supervisory control mode, intervening only when an event occurs requiring his action to restore normal operations. For training marine engineering personnel to detect, diagnose, and compensate for failures, simulators at different fidelity levels are being developed. A low fidelity simulator uses information displayed on an Apple II computer terminal in conjunction with system schematics provided on paper. Details of the low fidelity simulator are described, and the results of a pilot experiment are discussed.

scholarly journals Simulation-Based Training in Fire Prevention and Fire-Fighting of Scavenge Air Receivers Fires

2020 ◽  
Vol 2 (1) ◽  
pp. 100-111
Author(s):  
Leszek Chybowski ◽  
Seweryn Strojecki ◽  
Włodzimierz Markiewicz
Keyword(s):  
Diesel Engines ◽  
Fire Fighting ◽  
Fire Prevention ◽  
Fire Hazards ◽  
Marine Vehicles ◽  
Engine Room ◽  
Simulation Based ◽  
Marine Diesel ◽  
Main Engine ◽  
In Fire

AbstractThis article presents topics concerning fire hazards during the use of low-speed diesel engines in marine vehicles. The causes and effects of fires in the spaces of scavenge air receivers in marine diesel engines are presented. Methods to prevent and fight these fires are shown, including the operating procedures required from ship engine room operators. The possibility of training personnel to apply the abovementioned procedures during operation using simulations of a Kongsberg MC-90 IVship engine room is presented. Simulations were conducted which included a fire in a scavenge air receiver occurring during the operation of a MAN B&W 5L90MC main engine, with loads corresponding to 50% and 100% of the machine’s recommended setting.

Impact Of Engine Room Simulator As A Tool For Training And Assessing Bsmare Students’ Performance In Engine Watchkeeping

2021 ◽  
Vol 93 (6s) ◽  
pp. 88-100
Author(s):  
Charles Mangga ◽  
◽  
Paul Tibo-oc ◽  
Ronnie Montaño ◽  
◽  
...  
Keyword(s):  
Resource Management ◽  
Bachelor Of Science ◽  
Learner Performance ◽  
Engineering Program ◽  
Engine Room ◽  
Significant Difference ◽  
Hands On ◽  
Before And After ◽  
Marine Engineering ◽  
Physical Realism

Ship engine room simulator is a tool used by maritime academies that offer the Marine Engineering Program. According to the Standards of Training Certification and Watchkeeping for Seafarers (STCW), to provide physical realism in training and assessment, simulators are employed. Assessment programs have the intent of providing results that educators will utilize to improve their teaching strategies and improve learner performance (Klinger et al. 2008). This study aimed to (1) Determine the level of competencies of the Bachelor of Science in Marine Engineering cadets in Engine Watchkeeping with Resource Management before and after their exposure to the training on the use of the simulator as a tool for learning, and (2) To find out if there is a significant difference in the level of competencies of the cadets in Engine Watchkeeping before and after the training on the use of the simulator as a tool for learning. Mean and Wilcoxon tests were utilized to analyze the data. It was found that a significant difference in the level of competencies of the cadets in Engine Watchkeeping before and after the training, which implies that the Engine Room Simulator is a tool for learning and assessing the competencies of students in Engine Watchkeeping is effective. The study recommends that instructors should maximize the use of the available simulators in teaching the course. Students shall have a hands-on experience as supplementary to the theories that they learn.

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