Case Study

Repair and Protection for Air Cooler Waterboxes



Client Power generation industry, UK.   Application date August 2004.   Scope of Work  Scope of work due to severe sea-water corrosion leading to leakage, repair and future corrosion protection was essential. Also some mechanical modifications were carried out as specified by client.   Products Internally: Corroglass 600 series & Vinyl ester glass fabric. External: Plasmet ZF & cosmetic enamel topcoat.   Substrate Motor oil cooling waterbox.   Coating system • Internal grit blast to ISO 8501-1 Sa2½ • External grit blast to ISO 8501-1 Sa2. • Hand application using specialised techniques to rebuild seven damaged water boxes to provide effective, anti-corrosion protection. • Application internally of Corroglass 600 series to achieve a minimum dft of 1.5 mm. Coated across the flange faces and fully spark tested at 19kv and thickness checked. • Hand application of Plasmet ZF 150µm, followed by a top coat of enamel cosmetic top coat in customer’s house colours.   Coating Credentials This customer were able to save thousands of pounds, by recycling their old components – which some would have deemed as ‘scrap’. When the water boxes were re-installed, the customer benefited from the same efficiency that you would get with a new system with the added benefit of excellent corrosion protection – extending the life of the refurbished component. Corrocoat’s coating and engineering expertise combined once again benefited the customer two-fold.

Repair and protection for air cooler water boxes

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