CASE STUDY
The Single Buoy Mooring (SBM) is an import/export medium for
crude oil. Moored one or two kilometres from the shore, SBMs allow tankers to collect or deliver crude oil without entering ports by mooring and connecting to pipes which transfer the material via a sub-sea link. The approximate weight of the SBM shown is 234 tons. It has a turntable with the ability to turn 360 degrees in order to facilitate berthing and is fitted with a crane.
The Single Buoy Mooring (SBM) is an import/export medium for
crude oil. Moored one or two kilometres from the shore, SBMs allow tankers to collect or deliver crude oil without entering ports by mooring and connecting to pipes which transfer the material via a sub-sea link. The approximate weight of the SBM shown is 234 tons. It has a turntable with the ability to turn 360 degrees in order to facilitate berthing and is fitted with a crane.
After surface preparation, using hydroblasting, the SBM was immediately coated with a 3-coat system in two different areas. Above the splash zone, Alocit 28.14 primer was used followed by Alocit 28.15 grey as a colour-coded second coat, with a final coat of P.U. for colour and U.V. protection. Total D.F.T 360 microns.
In the splash zone and subsea areas the same primer and second coat were used, but the final coat was Alocit 28.15 black, giving a total D.F.T. of 500 microns. Total area 2 1900m.
As well as the main SBM structure being coated, the internal surfaces of the cofferdams, which give buoyancy to the SBM, were coated. After power-tool preparation, one coat of Alocit 28.15 white was used at a DFT of 200 micron for corrosion protection, to seal the existing coal-tar finish and for safety – giving a lighter environment for inspections.
In the splash zone and subsea areas the same primer and second coat were used, but the final coat was Alocit 28.15 black, giving a total D.F.T. of 500 microns. Total area 2 1900m.
As well as the main SBM structure being coated, the internal surfaces of the cofferdams, which give buoyancy to the SBM, were coated. After power-tool preparation, one coat of Alocit 28.15 white was used at a DFT of 200 micron for corrosion protection, to seal the existing coal-tar finish and for safety – giving a lighter environment for inspections.
INSPECTION / TESTING
As well as providing a high performance anti-corrosion coating, using Alocit meant that significant time and cost savings could be achieved. Engineers from the commissioning oil company estimated up to 50% savings were achieved in some areas because it could be applied immediately after water blasting without affecting adhesion. Total 2 area coated was 800m.
Conditions:
Oily
Products:
Alocit 28.14, primer
Alocit 28.15, grey
Alocit 28.15, black
Alocit 28.15, white
Alocit 28.15, grey
Alocit 28.15, black
Alocit 28.15, white
