Chimney for bio-methane plant gets corrosion protected13 January 2020

Leeds-based corrosion protection and engineering services specialist Corroserve has completed a contract to protect the internal surfaces of a newly manufactured mild steel chimney prior to it being installed at a bio-methane plant on Teesside.

The 1.2m diameter chimney was in three sections – 30m in all. In service, the chimney will be exposed to a range of waste gasses, including hydrogen sulphide, so protecting it by lining with a coating system would extend its service life and reduce future maintenance down time.

Completed at its Leeds factory, Corroserve first abrasive blast cleaned all the internal surfaces to remove heavy mill scale and provide the required surface profile for coating. This was followed by the application of multiple coats of Polyglass VEF – spray applied using Agmec internal pipe spraying equipment.

The Agmec pipe sprayer is part of the Corrocoat range of internal pipe blasting and spray equipment. Developed to coat pipe internals from 100-2000mm diameter, it uses centrifugal force produced by a spray cup. A fan spray pattern is produced by the multi-axial head. A constant-speed winch draws the sprayer through pipes up to 150m long.

Adam Offord

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