Case Study: CC020: Corroglass 600 for water boxes
Repair and protection for air cooler waterboxes.


Power generation industry.

Application Date

August 2004.

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.


Internal: Corroglass 600 & Vinyl ester glass fabric.
External: Plasmet ZF & cosmetic enamel topcoat.


Motor oil cooling water box.

Coating system

• Internal grit blast to ISO 8501-1 SA 21/2.
• External grit blast to ISO 8501-1 SA 2.
• Hand application using specialized 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 colors.

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.