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Understanding Hot And Cold Corrosion In Marine Engines
The profit earned by the shipping companies does not solely depend on the cargo they are entitled to carry. In fact, ... moreUnderstanding Hot And Cold Corrosion In Marine Engines
The profit earned by the shipping companies does not solely depend on the cargo they are entitled to carry. In fact, a significant portion of the profit is achieved from the savings in operational costs, which enable the ship owners to provide competitive price for carrying cargo.
As everyone knows, one of the major operating costs for running a ship from Port X to Port Y is the fuel oil. And for the same reason, companies are doing everything possible to cut fuel costs to the minimum using techniques such as slow steaming with low-grade fuels.
However, the fuel oils that are used to run the marine engines also adversely affect the engine parts (due to the naturally occurring elements present in them) if not burnt efficiently.
Corrosion is a primary concern on ships when it comes to burning heavy fuel oil in the marine engines. It can be further described as:
Hot Corrosion: It occurs due to the presence of Vanadium (Va) and Sodium (Na) i... less
Last post by Юрий Ильченко - November 16, 2017
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10 Harmful Effects Of Impure Air On Ship’s Machinery
The quality of air present onboard is of vital importance to both ship’s crew and its machinery systems.&nb... more10 Harmful Effects Of Impure Air On Ship’s Machinery
The quality of air present onboard is of vital importance to both ship’s crew and its machinery systems. Most of the ship’s systems use air for operation in one or the other way. Quality of air intake by ship’s machinery systems play a major role in deciding the performance and maintenance criteria of the machine.
In this article we have provided a general overview about ten harmful effects of impure air on ship’s machinery systems:
1. Poor Ventilation Harms Machinery: The engine room ventilation is the main consumer of intake air for all machinery systems located inside it. If the intake air is of poor quality, the performance of machinery systems can be severely affected. Special care must be taken especially in dry dock when blasting of hull is carried out. Precautions should also be taken while loading cargo with abrasive dust as ventilation fans will suck dust inside the engine... less
Last post by Юрий Ильченко - February 2, 2018
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What is an induction motor and what are its basic working principles?
An induction motor is probably the most commonly used electrical machine ever. It’s easy to maintain, ... moreWhat is an induction motor and what are its basic working principles?
An induction motor is probably the most commonly used electrical machine ever. It’s easy to maintain, it’s cheaper and more rugged compared to other alternatives. In addition, an induction motor always runs at speeds that are lower than synchronous speed.
The most common type of induction motor features a squirrel cage rotor. In this cage rotor there are aluminium conductors which were shorted together at both ends. Through 3 symmetrically placed windings 3 currents flow and an air gap flux generating the rotor current is produced.
Check out the video below to find out more about the induction motor! less
Last post by Юрий Ильченко - February 2, 2018
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8 Important Points For Inspection and Maintenance of Ship’s Engine Room Crane
... more8 Important Points For Inspection and Maintenance of Ship’s Engine Room Crane
Whether it’s overhauling of main engine/ machinery or shifting of heavy parts, the engine room crane is regularly used for “heavy-duty” jobs, which are usually beyond the physical capabilities of the engine room crew.
Th engine room personnel are qualified to operate the crane in a safe manner but as a machinery, the crane is subjected to breakdowns if proper maintenance and care is not taken. The scenario can be worse if the crane fails in the middle of lifting the load or while carrying out important machinery overhauling.
As a responsible officer on ship, the engineers using the crane must do regular inspection and scheduled maintenance to ensure the crane works safely without giving up at all times.
The engine room crane has a Safe Working Load (SWL) limit, which should never be crossed at all times. The crane manual is the best source to understand when and what inspections o... less
Last post by Юрий Ильченко - November 27, 2017
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Checks to Perform on Ship before Coming out of the Dry Dock
By KaranC | In: Guidelines | Last Updated on July 21, 2016
... moreChecks to Perform on Ship before Coming out of the Dry Dock
By KaranC | In: Guidelines | Last Updated on July 21, 2016
Dry dock is like a routine health check up for ships so that they live a long and healthy life. Dry dock schedule of every ship is laid down by the administration and every ship owner and operator has to follow the rules.
As much important it is to check conditions required for entering a dry dock, so much important it is to consider checks need to be done before the dock is flooded and ship is taken out of the dry dock. Let’s find out the exact procedure to be followed on a ship coming out of the dry dock.
It is extremely important to maintain a checklist of things and procedure to be done before undocking and not to miss any vital point which will lead to delay in undocking.
Following things must be checked by a responsible engineer and deck officers before water is filled up in the dock:
All Departments in charge to confirm that repairs assigne... less
Last post by news news - February 2, 2018
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Understanding Components and Design of Exhaust Gas System of Main Engine On Ship
By Anish | In: Main Engine | Last Updated on November 22, 2016
... moreUnderstanding Components and Design of Exhaust Gas System of Main Engine On Ship
By Anish | In: Main Engine | Last Updated on November 22, 2016
On ships, the work done by marine engines to keep the plant running for propelling a ship requires burning of fuel. The energy converted inside the cylinder of the engine is not 100% efficient conversion as part of it is lost in the form of exhaust gases.
The modern exhaust gas system of marine engines is designed in such a way that the unused gases coming out of the cylinders are further directed to turbocharger and exhaust gas boiler to recover most of the waste energy from the same.
Components for the Exhaust Gas system of Engine:
To utilise the maximum energy from the waste gases, the exhaust gas system of marine engine is provided with the following components:
Exhaust gas pipes
Exhaust gas boiler
Silencer
Spark arrester
Expansion joints
Exhaust gas-piping system for marine engine:
The exhaust gas piping system conveys the gas fro... less
Last post by news news - February 2, 2018
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World’s Largest Cruise Line Continues Growth With MAN Engines
MAN Diesel & Turbo has won the engine-supply contract from Fincantieri for newbuildings ordered by Costa Asia a... moreWorld’s Largest Cruise Line Continues Growth With MAN Engines
MAN Diesel & Turbo has won the engine-supply contract from Fincantieri for newbuildings ordered by Costa Asia and P&O Cruises, Australia. The two companies are members of Carnival Corporation & plc, the world’s largest leisure travel company with a combined fleet of over 100 ships across 10 cruise-line brands.
Each vessel will feature 2 × 14V48/60CR + 3 × 8L48/60CR medium-speed MAN engines, providing 62,400 kW installed power. The engines will be delivered to Fincantieri’s shipyards in Monfalcone (Trieste) and Marghera (Venice) between August 2017 and September 2019.
Image Credits: dieselturbo.man.eu
Each newbuilding will weigh 133,500 gross tonnes, have a length of 323 m, a passenger capacity of 4,000, and carry a crew of 1,450 personnel. Lex Nijsen – Head of Four-Stroke Marine – MAN Diesel & Turbo, said: “We are extremely pleased with the continuation of what has been a very positive development for u... less
Last post by news news - November 27, 2017
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Marine Insight
... moreMarine Insight
MAN Diesel & Turbo Wins Order For World’s First HyProp ECO System
By MI News Network | In: Shipping News | Last Updated on November 7, 2016
MAN Diesel & Turbo has won the order for a complete propulsion package for a chemical tanker. As a world-first, the package features a full HyProp ECO system with PTO/PTH; HyProp ECO is an innovative, fuel-saving, hybrid propulsion system.
The system will be employed aboard a 7,500-dwt stainless-steel chemical tanker ordered and operated by IÇDAŞ Çelik Enerji Tersane Ve Ulaşim Sanayi AŞ in Turkey. The propulsion package also features a MAN 6L32/44CR common-rail main engine, an MAN Alpha Kappel propeller and an MAN SCR (Selective Catalytic Reduction) system capable of operating on MGO, MDO and HFO. A delivery date for the newbuilding has been scheduled for September 2017.
Image Credits: dieselturbo.man.eu
Lex Nijsen, Head of Four-Stroke Marine, MAN Diesel & Turbo, said: “For many applications, a hybrid propulsion sy... less
Last post by news news - November 27, 2017
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8 Important Points For Inspection and Maintenance of Ship’s Engine Room Crane
By Anish | In: Marine Technology | Last Updated on October 8, 2016
... more8 Important Points For Inspection and Maintenance of Ship’s Engine Room Crane
By Anish | In: Marine Technology | Last Updated on October 8, 2016
Whether it’s overhauling of main engine/ machinery or shifting of heavy parts, the engine room crane is regularly used for “heavy-duty” jobs, which are usually beyond the physical capabilities of the engine room crew.
Th engine room personnel are qualified to operate the crane in a safe manner but as a machinery, the crane is subjected to breakdowns if proper maintenance and care is not taken. The scenario can be worse if the crane fails in the middle of lifting the load or while carrying out important machinery overhauling.
As a responsible officer on ship, the engineers using the crane must do regular inspection and scheduled maintenance to ensure the crane works safely without giving up at all times.
The engine room crane has a Safe Working Load (SWL) limit, which should never be crossed at all times. The crane ... less
Last post by news news - November 27, 2017
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Spotted: Norwegian Escape Flaunts World’s Biggest Scrubber Systems
... moreSpotted: Norwegian Escape Flaunts World’s Biggest Scrubber Systems
In today’s spotted we bring you what is deemed to be the world’s biggest scrubber system, which has been installed aboard the Norwegian Cruise Lines’ newest cruise vessel Norwegian Escape.
Yara Marine Technologies’ five SOx scrubber systems, installed aboard the largest cruise ship in Norwegian Cruise Lines’s fleet, make the ship more environmentally-friendly.
The inline scrubber is designed as a solution to fight air pollution at sea, with a capacity to clean emissions from 76.8 MW engine power. An inline scrubber is basically a “gas washing machine,” a simple cylinder that replaces the silencer of a ship engine and cleans the exhaust gas, reducing SOx emissions by up to 99%, Yara Marine said.
M/V Norwegian Escape can carry up to 4,248 passengers and 1,731 crew members. Diesel consumption at full cruising load is about 11 tons per hour, fueling an engine capacity equiva... less
Last post by news news - November 27, 2017
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World’s First Dual-Fuel Engine For Large High-Speed Vessels
This morning, in the Navantia facilities in Cartagena (Murcia), an event was held to present the adaptatio... moreWorld’s First Dual-Fuel Engine For Large High-Speed Vessels
This morning, in the Navantia facilities in Cartagena (Murcia), an event was held to present the adaptation of a CATERPILLAR 3618 propulsion engine to run on both natural gas (LNG) and diesel. The retrofit was carried out by the shipping company Fred. Olsen S.A.
During the event, which was opened by the Corporate Director of Systems, Alfredo Gordo, and the General Manager of Fred. Olsen S.A, Andrés Marín, details about the conversion of thisenginewere presented, as well as about its test bench validation according to the protocol established by the classification society DNV-GL.
Image Credits: valenciaport.com
In the next few days, the engine testing will be completed with the “Acceptance Test”, which certifies the safe and reliable operation of the engine in dual-fuel mode, in compliance with the technical standards and emissions regulations currently in force.
Thevalidation of the retrofitted engine req... less
Last post by news news - November 27, 2017
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Wärtsilä EGC Systems Become The First To Be Flag Approved In Asia
The Singapore flag state authorities have approved Wärtsilä’s exhaust gas cleani... moreWärtsilä EGC Systems Become The First To Be Flag Approved In Asia
The Singapore flag state authorities have approved Wärtsilä’s exhaust gas cleaning (EGC) systems, making it the first EGC to be approved by an Asian flag authority. The approvals relate to Wärtsilä EGC systems ordered for two new RoRo vessels owned by a Japanese shipowner and currently being operated by Wallenius Wilhelmsen Logistics, the privately owned Swedish/Norwegian shipping company. The ships entered into service this year.
The International Maritime Organization’s (IMO) Marpol Annex VI regulations are aimed at reducing air pollution levels from ships by reducing the sulphur oxide (SOx) content of the vessel’s engine emissions. The limits came into effect for ships operating inside Emission Control Areas with effect from January 2015. A global cap becomes effective from 1 January 2020, subject to a feasibility review to be completed no later than 2018.
Image Credits: wartsila.com
Und... less
Last post by news news - November 27, 2017
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What are Steering gear testing and drills requirements as per SOLAS ?
Within 12 hours before departure, the ship’s steering gear shall be checked and tested by the ship&rsqu... moreWhat are Steering gear testing and drills requirements as per SOLAS ?
Within 12 hours before departure, the ship’s steering gear shall be checked and tested by the ship’s crew. The test procedure shall include, where applicable, the operation of the following:
The main steering gear;
The auxiliary steering gear;
The remote steering gear control systems;
The steering positions located on the navigation bridge;
The emergency power supply;
The rudder angle indicators in relation to the actual position of the rudder;
The remote steering gear control system power failure alarms;
The steering gear power unit failure alarms; and
Automatic isolating arrangements and other automatic equipment.
The checks and tests shall include:
The full movement of the rudder according to the required capabilities of the steering gear;
A visual inspection for the steering gear and its connecting linkage; and
The operation of the means of communication between the navigation bridge and steering gear compartment.
Simple ... less
Last post by Fedorov Sergey - November 27, 2017
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10 Safety Points for Remote Manoeuvring System of Marine Engine
Remote control manoeuvring system helps the ship engineers and deck officers to steer the ship safely from a... more10 Safety Points for Remote Manoeuvring System of Marine Engine
Remote control manoeuvring system helps the ship engineers and deck officers to steer the ship safely from a control station (bridge or engine room), easing the process of monitoring and operation of marine engine power plant.
Considering the importance of this system, it is imperative for marine engineers to understand the know-how of the remote control system provided for maneuvering the main engine.
Every engineer on ship must know basics of pneumatics, electrical and electronic systems, hydraulics, wiring, piping, knowledge of steering etc. and other systems related to manoeuvring of marine engine.
Without doubt, the engine manual is the best source of information for understanding and operating engine room machinery. The manual must be consulted whenever doing any troubleshooting, maintenance or operating the engine for the first time.
Let’s take a look at ten important safety steps that must be taken when... less
Last post by Fedorov Sergey - November 27, 2017
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How Marine Air Charging System For Engines Has Changed Over Time
By Anish | In: Marine Technology | Last Updated on December 28, 2015
Diesel engine for propelling ships came in to... moreHow Marine Air Charging System For Engines Has Changed Over Time
By Anish | In: Marine Technology | Last Updated on December 28, 2015
Diesel engine for propelling ships came in to picture in the early 19th century. They not only helped to reduce the heat losses (steam engines) from engines but also to increase the speed and fuel efficiency of the ships.
For efficiently burning diesel fuel in the engines, it is imperative that sufficient air is supplied at every cycle inside the cylinders. To achieve this, a variety of methods were adopted for supplying fresh air to burn the fuel and to produce the required power within all cylinders of the engine.
Before turbocharging came, the process of supercharging process was used. A mechanical arrangement within the engine was used to supply extra air to the combustion chamber of the engines. In this article, we will discuss different methods and arrangements used to supply fresh charge air:
1.Mechanically driven side moun... less
Last post by Sergey Abdulov - November 27, 2017
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