To save time and money for the owners of a general cargo vessel that was leaking oil, a Hydrex diver-technician team replaced three stern tube seals, using one of the company’s flexible mobdocks. This enabled the team to carry out the entire operation underwater during the vessel’s stop in Antwerp.
After the team and all equipment had arrived at the vessel, the Hydrex team leader met up with the vessel’s owner and superintendent while the rest of the diving team set up a work station to monitor all underwater activities. Next all quayside preparations were made for the main activity, which started immediately with the removal of the rope guard. This was followed by a thorough underwater inspection and shaft weardown readings.
It was revealed that the leak was caused by a totally worn down oil seal and running area. A spacer ring was installed to push the housing of the seals further from the stern tube and over a new running area for the seals. Next the flexible mobdock was installed, creating a dry working environment for the divers to allow the entire stern tube assembly to be cleaned before the damaged seals were replaced. Subsequently all parts were reinstalled and secured. After a leakage test was successfully performed, the rope guard was welded on again.
With more than 35 years of experience and its well trained diving teams, the Hydrex technical department knows how to handle any kind of operation with the highest standards and always saving time for the customer.
If you would like to learn more about stern tube seal repairs, visit our special stern tube seal repair page or contact one of our offices. All lines have 24/7 service.