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Case Study - Cooling Towers - BAC Sumps

Project Brief: The Internal Relining of 4 No. BAC Cooling Tower Sumps

System Specification: Solvent Free Polyurethane

Completion Date: 5th January 2010

COVAC Contract Ref: 913

Summary of Works

If left untreated, the internal steel substrates would be endangered with a continued risk from progressive corrosion, clogging of the filters and micro aquatic bacterial growth including Legionella, Pseudomonas and Biofilm; this can lead to further deterioration in the towers surface structure, performance and contamination of the down services with the supply and dispersion of unhygienic and potentially harmful water.

The Refurbishment of All 4 No. BAC Cooling Tower Sumps

The internal surfaces of the sumps having been drained of water prior to any work commencing.

water tank before treatment water tank before treatment water tank before treatment water tank before treatment water tank before treatment water tank before treatment water tank before treatment water tank before treatment

The internal substrates after being prepared by COVAC Operatives in accordance with ISO 8501-1:2007, utilizing mechanical power tools and manual tools.

water tank stripe coated water tank stripe coated

The substrates having received the1st full coat of Polyurethane coating (cream) Solvent Free Polyurethane, by means of brush and roller.

water tank after first coat of polyurethane coating water tank after first coat of polyurethane coating water tank after first coat of polyurethane coating water tank after first coat of polyurethane coating

All intricate areas were again ‘stripe coated’ for a second time. The following photographs show the final application of the 2nd coat of Solvent Free Polyurethane (grey).

water tank after second coat of polyurethane coating water tank after second coat of polyurethane coating water tank after second coat of polyurethane coating water tank after second coat of polyurethane coating

Call us today find out why you should use our alternative to water tank replacement on: 0800 772 3367.