Cooling Tower Maintenance and Testing Services

We are all aware of the dangers of Legionella in cooling towers, and the biocide cost to have ‘clean’ systems.

However, if you have a cooling water system, you know there are many additional factors that need to be considered in relation to controlling Legionella in cooling towers.

Oxidising Biocides such as Chlorine and Bromine, among others, are used extensively for the control of bacteria populations in cooling water systems.

However, uncontrolled or overdosing of Oxidising Biocides can provide the conditions for rapid active corrosion on system metals. Oxidising Biocides have a burning action which requires intimate contact with the biomass. Therefore, thicknesses of biomass can provide a protective layer for underlying bacterial populations.

In order to reduce this biomass, the Oxidising Biocide levels are often increased which can cause excess levels on metals that don’t have high biomass contamination. This can lead to active corrosion sites.

Non Oxidising Biocides
Alternatively, Non Oxidising Biocides have a much longer lingering effect maintaining a residual following any interruptions to dosing.

Non Oxidising Biocides have a much greater capacity to penetrate bio-films (biomass) and inhibit the growth functions of the bacteria. Non Oxidising Biocides also have a much higher level of compatibility with corrosion & scale inhibitors and dispersants than Oxidising Biocides.

Overview
Tandex understands that cooling water systems can be very expensive and customers don’t want to have to replace them. That’s why we aim for long-term solutions to your water treatment needs.

Tandex manufactures a complete range of industrial chemicals for controlling Legionella which includes a range of nonoxidising biocides.

Our Service Programs
As part of our comprehensive on-site Cooling Tower service programs, Tandex provides various products and services for efficient cooling tower maintenance.

These include:

• cooling tower inspections
• cooling tower on-site servicing & chemical testing
• Legionella sampling & Heterotrophic Colony Count (HCC) sampling
• corrosion prevention products, corrosion monitoring & testing
• scale prevention products
• biocides and bio-dispersants
• As well as a range of cleaning products, maintenance services, dosing and safety equipment.

• Tandex service programs are monitored via our computer tracking system to help ensure every site is attended on time.
• Service reports are assessed regularly to ensure the best results for every site.
• Water samples are transported under refrigerated conditions to an independent NATA approved laboratory for testing.
• All results are confirmed in writing and any corrective action required is carried out in accordance with legislative requirements.