Case Study - Sectional, Steel Water Tanks
Client: XXXXXX Hospital
Project Brief: The Internal & External Refurbishment of 1 No. Hornsley Bridge, Sectional, Steel, Potable Water Retaining Structure.
System Specification: Solvent Free Polyurethane
Completion Date: 23rd July 2008
COVAC Contract Ref: 751
1 No. Hornsley Bridge, Sectional, Steel, Potable Water Retaining Structure, located externally behind the Estates Department and sized at approximately: 32’ x 24’ x 8’. The internals surfaces of the structure had previously been painted with an Epoxy System, which whilst in reasonable condition, has now come to the end of its useful life due to areas of sub-film corrosion and non-approval (WRAS / DWI) of the primer coat.
These photographs show the internal surfaces of structure having been drained of water and prior to any preparation works being carried out.
These photographs show the internal surfaces, after the mechanical preparation process by the COVAC Operatives using dry abrasive grit blast equipment in accordance with the a accepted Standard.
The following photographs show the substrate both during and after being fully coated with Solvent Free Polyurethane, by means of plural component spray equipment.
These final images show COVAC operatives checking the Elcometer 456 readings to ensure results of well above the nominal thickness required.
As with the internal surfaces, the external surfaces were mechanically prepared by the COVAC Operatives using dry abrasive grit blast equipment in accordance with the accepted Standard and these photographs show the external of the structure having been fully coated, utilising Solvent Free Polyurethane.
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