Scrubber Repairs

5 Oceans offers a range of innovative Scrubber Overboard Repairs for damage caused by scrubbers acids to the discharge piping. Many of these solutions can be carried out in-situ during cargo ops, or even while sailing. Helping you to avoid costly, unexpected time in drydock.
We can provide:
  • Pipe renewal with a class approved insert
  • Wet coating repairs
  • Dry coating repairs
  • Welding repairs
  • Hyperbaric welding repairs
  • GRE pipe laminating
These services are crucial for maintaining the operational integrity of vessels and minimizing operational downtime. 5 Oceans provides a fast service for underwater scrubber repair needs, worldwide. Using custom fabricated cofferdams and hyperbaric habitats, defective scrubber pipes can be replaced underwater using dry welding procedures that qualify as permanent repairs by all top tier classification societies.
What are scrubber systems?
Scrubbers or Exhaust Gas Cleaning Systems (EGCS) are used to remove particulate matter and harmful components, such as sulphur oxides and nitrogen oxides from the exhaust gasses generated as a result of combustion processes in marine engines, to implement pollution control.
What is the difference between open-loop, closed loop or hybrid scrubber systems?
Scrubbers come in three varieties: open-loop, closed-loop, and hybrid. Open-loop systems suck in seawater, spray it into the exhaust, and discharge it overboard, often without treatment. Instead of using seawater, closed-loop systems have a tank of alkaline-dosed freshwater onboard. After it is sprayed into the exhaust, the water is filtered to remove solid particles and then recirculated, with a small amount of “bleed-off” water discharged overboard. Hybrid scrubbers can be operated in open-loop or closed-loop mode. About 80% of scrubbers installed on ships are open-loop. Hybrid scrubbers account for about 17% and closed-loop scrubbers account for less than 2%. Open-loop scrubbers are the most popular because they are the least expensive to install and operate. Hybrid scrubbers cost more, but provide a bit of insurance against local restrictions on open-loop scrubber discharges, as they can be switched to closed-loop or zero-discharge mode. Mainly, ships use hybrid scrubbers in open-loop mode to avoid collecting and storing scrubber sludge, which needs to be disposed of on land, for a fee of course. Closed-loop systems are the most expensive and, unlike open-loop systems, continuously collect and store scrubber sludge that must be removed from the recirculating washwater.
What is hyperbaric welding?
Hyperbaric welding is the process of welding at elevated pressure. Hyperbaric welding is taking place dry inside a specially constructed positive pressure enclosure and hence a dry environment. This improved environmental control leads directly to improved process performance. 5 Oceans Diving has various hyperbaric welding solutions and experienced professionals available to fit your requirements
Contact us
Contact us today to schedule an consult about our scrubber repair options. Our team is ready to provide repair plans which will meet your requirements and save you time and money by reducing downtime.

Underwater repairs, maintenance and inspection for the international merchant fleet.