Cooling towers provide an ideal environment for the growth and incubation of many organisms, including the Legionella bacteria. Periods of non-use (winter lay-up) exacerbate the problem. Although a consistent biocide program can reduce the risks, it is best practice to clean a cooling tower at least twice a year. We will work with you to customise a cleaning program that will meet health department guidelines and standards whilst meeting your specific needs.

How we clean your cooling tower:

  • Isolate heat source and chemical dosing equipment
  • Perform a 1 hour disinfection by adding a bio-dispersant and chlorine while maintaining correct chlorine and PH levels
  • Isolate the system ensuring correct lockouts are performed (LOTO)
  • Remove access panels, louvres and drift eliminators to gain access to all areas of the cooling tower
  • High pressure clean the cooling tower casing
  • Check water distribution system and spray nozzles
  • Remove all solid matter from the basin floor and sump
  • Clean and refit louvres, drift eliminators and access panels
  • Refill system with water and de-isolate pump
  • Perform second disinfection by adding chlorine while maintaining correct chlorine and PH levels for 1 hour. Drain to sewer or neutralise excess chlorine level
  • Refill with fresh make up water and repassivate system with Biocide and corrosion inhibitor
  • Recommission system and place dosing equipment back on line
  • Provide detailed condition report and cleaning certificate