Case Studies
TES in practice: evidence from the field.
These case studies document where TES and Mexel®432 have been applied, what was measured and what results were observed. They are written to give station engineers and decision-makers a clear, honest picture of what TES can deliver — and what it cannot.
Each case study follows a consistent structure: baseline conditions, intervention approach, observed results and lessons learned. Where independent verification was conducted, we include the referee's conclusions.
What you'll find in these case studies
Baseline data
Pre-treatment performance metrics including TR, TTD, condenser vacuum, and where available, heat-rate data.
Treatment protocol
Dosing rates, chemistry parameters, and integration with existing water-treatment programs.
Measured results
Changes in key performance indicators during treatment period compared to baseline.
Lessons learned
Operational insights, challenges encountered, and recommendations for future deployments.
South Africa
Eskom power stations
TES has focused its initial deployments at South African coal-fired power stations where cooling-water challenges are acute. These sites face variable raw-water quality, high solids loading, biofouling and corrosion—conditions that make them ideal testing grounds for the TES approach.
Eskom • Wet-cooled coal
Tutuka Power Station
TES dosing system installed. Validated via ASME PTC 12.2. Pilot progress constrained by on-the-ground conditions including dam status, water configuration and induction scheduling. Full case study to follow once baseline and intervention data collection is complete.
Expected completion: Subject to station conditions
Why Eskom stations?
Complex water chemistry
Eskom stations face challenging raw-water quality with high TDS, variable pH and seasonal biofouling—perfect for validating Mexel®432 performance.
Established protocols
Validated via ASME PTC 12.2, providing a rigorous, transparent framework for baseline → intervention → review assessment.
Independent verification
Water Research Commission (WRC) can act as independent referee, ensuring credible, unbiased evaluation of results.
International
Global Mexel®432 installations
Mexel®432 has a 30+ year track record across power generation, refining, petrochemical, desalination and marine industries worldwide. These reference cases demonstrate the product's proven performance in diverse cooling-water environments and validate the chemistry underlying the TES approach.
France
EDF Nuclear Power Stations
Multiple EDF nuclear plants use Mexel®432 for condenser and cooling-system protection. Long-term deployments (10+ years in some cases) with consistent biofouling control and improved heat transfer performance.
Reduced mussel/barnacle fouling
Extended cleaning intervals
Corrosion inhibition
Industry: Nuclear power
Application: Condenser protection
United States
Refinery cooling towers
US refineries have deployed Mexel®432 to manage biofilm and Legionella risk in recirculating cooling water systems while reducing overall chemical load. Replaces multi-product programs with single-chemistry approach.
Biofilm control
Legionella risk reduction
Lower chemical footprint
Industry: Oil & gas
Application: Cooling towers
Middle East
Desalination plants
Mexel®432 protects intake systems and heat exchangers in seawater desalination facilities, preventing marine fouling without environmental harm. Critical for maintaining thermal efficiency in high-salinity environments.
Marine fouling prevention
Heat exchanger protection
Environmental compliance
Industry: Desalination
Application: Marine fouling control
Japan
Coastal power stations
Japanese thermal power stations using seawater cooling have applied Mexel®432 to control mussel and barnacle fouling in intake tunnels and condensers. Demonstrated efficacy in challenging marine environments with high biofouling pressure.
Mussel/barnacle control
Intake tunnel protection
Seawater compatibility
Industry: Thermal power
Application: Seawater cooling
Brazil
Petrochemical complexes
Brazilian petrochemical facilities have used Mexel®432 for heat exchanger protection across multiple process units, reducing unplanned shutdowns and maintenance costs. Proven integration with existing treatment programs.
Reduced maintenance shutdowns
Multi-unit application
Cost efficiency
Industry: Petrochemical
Application: Heat exchangers
India
Steel & manufacturing
Indian steel plants and heavy manufacturing sites have deployed Mexel®432 to protect process cooling systems from scale and biofouling buildup. Effective in high-temperature, high-solids industrial cooling-water environments.
Scale control
High-solids tolerance
Process reliability
Industry: Steel & manufacturing
Application: Process cooling
About international references
These international case studies represent Mexel®432 deployments by Mexel Industries (France) and its global partners across 30+ years of field application. TES holds the exclusive distribution rights for Mexel®432 in Southern Africa and applies the same proven chemistry within the structured TES approach (IoT dosing, data integration and verification protocol).
Detailed technical documentation, site reports and performance data are available on request for qualified enquiries. Contact us to discuss specific industry applications relevant to your operation.
Want more detail on these case studies?
We maintain detailed technical documentation, site reports and performance data for all international Mexel®432 deployments. For Eskom stations, we can share verification protocol documentation and discuss how the same approach could apply to your site.
Technical site reports and performance summaries
Baseline vs. intervention data comparisons
Industry-specific application guidance