Cost-effective repairs for potable water tanks
Cost-effective repairs for potable water tanks
Keywords Corrocoat, Corrosion, Health and safety, Water quality
Maintaining the quality of storage vessels used to hold potable water is a vital issue for health and hygiene. When maintenance staff at the Kent & Sussex Hospital identified a problem with a segmental GRP potable water storage tank, which was leaking from the joints, they acted promptly to resolve the situation.
The tank was isolated from service, and corrosion engineering specialists Corrocoat were requested to put forward a solution. Initial investigations showed some corrosion damage around the joints, which was causing the visible leakages.
The solution implemented by Corrocoat's site services division involved blast cleaning the vessel to expose the extent of the damage, using vacuum recovery techniques to ensure recovery of spent abrasive and debris for a dust-free environment.
The internal surfaces around the joints were then treated using a specialist composite material developed and manufactured by Corrocoat, extended to a specified distance on either side of each joint to ensure total coverage.
These repairs were then overcoated using multiple coats of Corrocoat's Polyglass VEF material, a vinyl ester acrylic co-polymer approved by the Water Research Council (WRC) for use in potable water environments.
The repairs were completed satisfactorily, restoring the integrity of the storage vessel, which is now back in use at the Kent & Sussex Hospital.
Further details from Corrocoat Services Ltd. Tel: +44 (0)113 276 0760; Fax: +44 (0)113 276 0700;E-mail: enquiries@corrocoat.comWeb: www.corrocoat.com
