Port of South LouisianaBühler GmbHThe Wolfson Centre for Bulk Solids Handling Technology TBA GroupPort of Vancouver USACleveland Cascades Ltd
  • Coaltrans Global 2021
  • TOC Events
  • TBA Group
  • Port of South Louisiana
  • Vigan
  • Port of Stockton

Hydrex repairs bulker scrubber overboard pipe

Hydrex repairs bulker scrubber overboard pipe

(Posted on 06/07/20)

Last month Hydrex diver/technicians carried out scrubber overboard pipe repairs in Belgium and the Netherlands. In Flushing the corroded overboard pipe of a 229-meter bulker was replaced. In Antwerp the same was done on a 200-meter roro vessel. In both cases the new pipe was protected with Ecospeed, a chemical resistant coating produced by Subsea Industries.

Exhaust scrubbers are systems that filter out all harmful toxins from exhaust gasses of marine diesel engines. These can severely corrode the pipes of the scrubber which can result in water ingress if not handled quickly enough.

A small team traveled to the location of the bulker to perform an inspection of the damaged pipe on both the waterside and the onboard side of the hull. This confirmed that the scrubber outlet was corroded. Replacing the affected part of the pipe in its entirety was the only option.

A cofferdam had been constructed at the Hydrex workshop based on the drawings sent by the customer. The team installed this cofferdam over the outlet of the pipe. This allowed them to perform work inside the engine room without water ingress.

Next the team cut away the old pipe. The shell plating was then prepared for the installation of the replacement part. The new pipe had also been constructed at the Hydrex warehouse in Antwerp with a diffuser and flange already in place. The pipe was then positioned and secured with a full penetration weld. Next and independent inspector carried out NDT testing of the welding work.

To prevent the new pipe from corroding, the inside was coated with Ecospeed. This product is produced by Hydrex sister company Subsea Industries. www.subind.net. Ecospeed is highly chemically resistant. Taking into account the nature of the process taking place inside a scrubber, this is essential for a lasting protection of the pipe. Ecospeed can also be used to protect a newly installed scrubber system from day one.

The same procedure was followed on the corroded starboard overboard scrubber pipe of the roro vessel in Antwerp. The portside overboard pipe of this vessel had been replaced eight months ago and had also been coated with Ecospeed at that point. An inspection of the portside pipe revealed that the pipe and the Ecospeed coating were still in perfect condition. No further action was needed for this pipe.

Latest News

New security guidance from ICS

(Posted on 11/04/21)

As recent news reports highlight, the shipping industry continues to face threats such as piracy, kidnapping... Read more


Algoma takes delivery of latest Equinox Class bulker

(Posted on 06/04/21)

Algoma Central Corporation, a leading supplier of marine transportation services, has announced that... Read more


Wavespec announces management buyout

(Posted on 06/04/21)

Wavespec, as the last technical entity within Braemar Shipping Services Plc, has announced that it is... Read more


Vaccination lottery for dry bulk sector

(Posted on 31/03/21)

INTERCARGO believes that, once again seafarers are falling victim to the lack of focus and joined up... Read more


Suez demonstrates importance of shipping

(Posted on 28/03/21)

As efforts to refloat the Ever Given continue, the International Chamber of Shipping (ICS) has released... Read more


GTMaritime moves to employee ownership

(Posted on 28/03/21)

GTMaritime has announced that it has transitioned its business to an Employee Owned Trust (EOT), in... Read more


Joint research on autonomous ships risk

(Posted on 28/03/21)

Leading classification society ClassNK has begun joint investigative research with Sompo Japan Insurance... Read more


Western Bulk looks to “promising” 2021

(Posted on 22/03/21)

Oslo-based global dry bulk operator, Western Bulk has published its 2020 Annual Report with a full year... Read more


Reducing seafarer anxiety and sadness

(Posted on 22/03/21)

International maritime charity Sailors’ Society’s Wellness at Sea training and support reduces... Read more


Great Eastern adds to bulk fleet

(Posted on 17/03/21)

The Great Eastern Shipping Company Limited (G E Shipping) has signed a contract to buy a second-hand... Read more


TelestackPort of StocktonViganCimbriaTOC EventsSailors Society
  • Cleveland Cascades Ltd
  • Port of Vancouver USA
  • Sailors Society
  • Telestack

Subscribe to our newsletter

Keep up to date with the latest global news in bulk cargo handling and shipping