Corrosion and fouling Protection of sea suction risers

Jul 27, 2020 | Uncategorized | 0 comments

Al Huda Corrosion treatment in Qatar was asked by its client, nakilat svitzer wijsmuler (nsw) to inspect and recommend a programme of refurbishment and on-going protection for a number of sea suction risers.

A crew boat is a vessel specialising in the transport of offshore support personnel, deck cargo and below-deck cargo to and from offshore installations. Based in Ras Laffan Port in Qatar, NSW had identified three boats that required corrosion and fouling protection.

Al Huda recommended that the six sea suction risers be bristle blast cleaned to remove marine fouling and provide a suitable surface profile. The surface was then primed and subsequently coated with Polyglasss VE HA to a required dft of 1000μm and the flanges were cast using Corroglass 602. In order to provide ongoing non-toxic protection against marine growth the internals were given a final coat of Biofoul to a dft of 300μm.

With the programme of work completed the sea suction risers are now fully corrosion protected in this highly corrosive marine environment and thanks to Biofoul, protected from fouling by marine growth.