Bakker Sliedrecht deploys condition-based maintenance

Bakker Sliedrecht deploys condition-based maintenance

Electrical systems provider Bakker Sliedrecht has switched partly from time-based maintenance to condition-based maintenance to optimise vessel maintenance cycles.

The company, which installs and monitors electrical drive systems and components is using condition-based maintenance to ensure that maintenance, repair and replacement are only planned and carried out when necessary, improving cost efficiency.

Time-based maintenance focuses on the periodic overhaul or replacement of motors, drive systems, transformers, components or its parts. In many cases however, these parts can last much longer than the manufacturer’s prescribed term.

On the other hand, motors or parts can be worn out much faster due to experiencing heavier loads than previously expected. With condition-based maintenance, monitoring is based on visual inspections and electronic measurements.

The collected data gives clear insights whether maintenance, overhaul or replacement is necessary. This allows the required maintenance to be executed at a more convenient time.

In addition, the system is monitors equipment and is able to predict the occurrence of likely failures.

Condition-based maintenance prevents unnecessary repairs and replacement if measurements show that maintenance can take place at a more convenient time.

The main advantage of the new method is that the maintenance cycle can be optimised around the actual lifetime of equipment instead of pre-scheduled replacement.

“We see that many systems and parts wear much less quickly and last out longer than expected. With time-based maintenance, we replaced everything after a certain number of years, while our condition measurements now show that this is often not yet necessary,” said Arend van der Velde, head of technology and innovation at Bakker Sliedrecht. “These are essential parts of the whole power plant. The measurements give us a much better insight into the status and condition. That is why you see that condition-based maintenance is increasing in the market.”

Bakker Sliedrecht has already introduced and applied the new maintenance method to various dredging and offshore companies, as well as industrial partners.

Currently, service technicians use their laptops to collect and analyse data when performing condition measurements. The deviations and the fail values are immediately visible on the screen. Bakker Sliedrecht wants to be able to read this data remotely and further automate it in the future. “That depends on the method of data storage and the accessibility of vessels. To utilise the full potential of condition-based maintenance, solid cooperation with the client is very important,” explained Van der Velde.

By collecting and comparing the data from multiple assets, Bakker Sliedrecht will eventually be able to see whether processes on board are running efficiently and where they can be further improved. “Based on the observations from analysed data, we can make recommendations to the client. For example, about a submersible pump that often runs up against the cavitation limit. We can then advise changing the drive speed. In this way, we hope to advise in more areas in the future to make ships operate more efficiently,” said Van der Velde.