That’s the smart way, and that’s
the MARDEXS way to keep you sailing
Services range from pre-dock maintenance, to troubleshooting, and complete dry dock engine overhauls.
Modification of Alpha/ME lubricators considerably improves main engine cylinder condition and reliability. Following the modification, cylinder oil is injected with higher frequency, resulting in fewer dry revolutions, and extending the time between engine overhauls.
A properly functioning Engine Control System is crucial. Mardexs performs a Health Check of the ECS on all ME-type engines - a pragmatic maintenance solution, which is near-impossible for the crew, and considerably reduces repair costs.
The pneumatic system on MC-type engines is crucial for the overall engine reliability, not to mention start-up and maneuvering procedures. With Mardexs dry dock maintenance, engine start-up difficulties are eliminated.
Mardexs supervises 5-year dry-dock engine overhauls based on the findings from the pre-dock survey. The overhaul is carried out with a key focus on engine reliability, optimizing operating and maintenance costs.This covers areas not mentioned in the manuals, and often not known by the crew.
Based on a preliminary 17-question engine survey, conducted in close cooperation with the vessel's chief engineer (and superintendent), Mardexs will prepare the engine overhaul pre-dock - including recommended scope, recommended spare parts, and time estimates.
Mardexs provides instant troubleshooting and support in case of engine malfunctions. Whatever the problem, Mardexs will assist to have the engine running within hours.
Troubleshooting tasks can include:
Cylinder condition (repeated failure of piston rings, high wear rates, corrosion) | Performance evaluations (underperforming vessels, low pool points, engine tuning, hull/propeller performance, etc.) I ECS on ME engines (operating issues, auto tuning, abnormal alarms, discrepancy of cylinder pressure or fatal stops) | Pneumatic system on MC engines (i.e. issues starting, reversing or increasing loads) | Repeated bearing problems | And more.
Mardexs reconditioned the Hydraulic supply pumps for a German owner with container vessels in our workshop in Shanghai.
Mardexs attended German container vessels with MAN 11K98ME-C engines, carrying out total maintenance of the engine control systems including reconditioning of the hydraulic supply pumps.
Mardexs attended the vessels in various ports to carry out the upgrade which has reduced volume of injected cylinder oil at a higher frequency. The result is an improved cylinder condition leading to longer time between overhauls.
Mardexs Denmark was urgently called to attend the vessel for investigation. We conducted a repair of the damage with the vessel’s crew, and during the process we concluded that the cylinder cover was out of balance by design, and therefore wrongly assembled. The vessel crew was instructed how to compensate for the unbalance.
Communication with the vessel revealed that the compression pressure could not be controlled. It was recommended to replace the exhaust valve timing piston. Later the piston was replaced and the performance was normal.
Mardexs attended a series of Danish tanker vessels for a total of five years, carrying out maintenance of the engine control systems, upgrade of the cylinder lubricators, and supervision of the main engine work carried out by the ship yard.
Mardexs attended a series of Danish tankers with MAN 6S50MC-C engines for maintenance of the pneumatic control systems, maintenance and upgrade of the cylinder lubricators, and supervision of the main engine work carried out by the ship yard.
Mardexs attended a series of Danish container vessels for a total of five years, carrying out maintenance of the vessels’ engine control systems.
Mardexs was engaged for supervision of the main engine overhauls, and an overhaul of the pneumatic control system. These services were repeat-jobs from the same vessels in 2015. It was quite clear to the customer that the careful review of the main engine, the careful supervision, and the quality of our service in 2015, had resulted in 5 years of reliable, continuous service. Prior to the dry dock, a 17-question pre-dock engine survey completed by the vessel’s chief engineers revealed the engine condition to us. The extent of the overhaul was determined and recommended to vessels superintendent, along with a list of recommended spare parts. Careful supervision and maintenance of the pneumatic control system has set-up the engines for another 5 years of reliable operation.
Mardexs was urgently contacted. Short communication with the vessel revealed that a specific pneumatic valve had failed. The vessel was guided to replace the stop valve, and the engine started successfully.
An investigation of the engine performance revealed that the fuel index was higher than expected. It was concluded that the fuel injection pumps were worn out. Temporarily, the protection curves were raised to accommodate the higher index. The vessel could proceed at ordered speed.
Making the trip to Europe from the far east, the crew discovered loud noises from the crank case. It turned out that one crank pin bearing had been left untightened from the yard. The problem was temporary solved by removing the connecting rod, and running on 11 cylinders. When arriving in Tanjung Pelepas, the vessels chief engineer heard more noise from the engine. From Malaysia the vessel was bound for Suez, passing the piracy area at Somalia. Engine failure in the piracy area would be fatal, and the fleet management wanted to be assured that the vessel could proceed. Mardexs was called to Tanjung Pelepas. After examination of the engines internals, and running the engine from Tanjung Pelepas to Port Kelang, we could assure fleet management, the vessels captain and chief engineer, that the engine could bring them safely through the piracy area and onto Europe.
With more than 30 years of industry experience, our team of highly qualified and trained engineers offers straightforward technical advice and concepts to optimize operating and maintenance costs.
Mardexs Denmark works tirelessly to keep you sailing.
Thorough 17-question survey to analyse main engine condition.
The need for engine maintenance is determined by the vessel’s chief engineer, based on the engine’s manual and running hours.
Detailed proposals for main engine overhaul based on pre-dock survey.
Overhaul is planned based on the chief engineer’s evaluation.
List of necessary spare parts in accordance with engine manual.
Spare part sets ordered.
Overhaul conducted by Yard based on pre-dock recommendations. Engine Control System maintenance by Mardexs.
Conducted with little to no focus on the Engine Control System.
Fast and secure, eliminating future offhire.
Often time consuming and incomplete, risk of offhire repairs.
With summary, conclusions, and prioritized recommendations on the first pages.
Simple summary of dry dock inspection.
With more than 30 years of industry experience, our team of highly qualified and trained engineers offers straightforward technical advice and concepts to optimize operating and maintenance costs.
Mardexs Denmark and our partner companies in Korea and Germany work tirelessly to keep you sailing.
Thorough 17-question survey to analyse main engine condition.
The need for engine maintenance is determined by the vessel’s chief engineer, based on the engine’s manual and running hours.
Detailed proposals for main engine overhaul based on pre-dock survey.
Overhaul is planned based on the chief engineer’s evaluation.
List of necessary spare parts in accordance with engine manual.
Spare part sets ordered.
Overhaul conducted by Yard based on pre-dock recommendations. Engine Control System maintenance by Mardexs.
Conducted with little to no focus on the Engine Control System.
Fast and secure, eliminating future offhire.
Often time consuming and incomplete, risk of offhire repairs.
With summary, conclusions, and prioritized recommendations on the first pages.
Simple summary of dry dock inspection.
Most ME engine overhauls are recommended at 32,000 hours, but an oil/chemical tanker will normally reach 22,000 – 25,000 hours between 5-year special surveys. Mardexs Denmark’s ECS Health Check is a pragmatic maintenance solution that considerably reduces repair costs.
Mardexs Denmark provides ongoing spare part checks to ensure operating and maintenance costs are optimized between dry dock service, in full accordance with the accepted criteria in engine manuals.
At Mardexs Denmark, we help our customers save money on mainternance and repairs by focusing on the necessary adjustments that will increase the performance and reliability of their vessel engines.
Mardexs Denmark does not sell spare parts, nor do we add re-seller percentages to supplier prices, but we are more than happy to help our customers purchase the correct spare parts for their engines.
Mardexs Denmark supervises 5-year dry dock engine overhauls carried out by shore personnel, in order to ensure reliable results and peace of mind for fleet management, vessels captains, and chief engineers.
At Mardexs Denmark, we consider service reporting to be equally as important as the services carried out. In our service reports, you will find SUMMARY, CONCLUSIONS, and RECOMMENDATIONS on the first pages, highlighting any maintenance or repair tasks that require immediate attention.
Most ME engine overhauls are recommended at 32,000 hours, but an oil/chemical tanker will normally reach 22,000 – 25,000 hours between 5-year special surveys. Mardexs Denmark’s ECS Health Check is a pragmatic maintenance solution that considerably reduces repair costs.
Sandtoften 10, DK-2820 Gentofte, Denmark
CVR nr. 32320759
Phone +45 2114 7194
Email erikbrems.kristensen@mardexs.dk
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