Our process can be applied both online and offline. With the longest experience in the industry, we are specialized in the chemical cleaning of water cooled generator coils and the stator cooling water system. Our method is based on the use of chelants (e.g. EDTA) with innovative developments built on 40 years of industry knowhow.
Chelant cleaning removes copper oxides without attacking the system materials. The method employs dedicated monitoring of the process parameters, customized addition of the chelating agent and an oxidizer, and proprietary auxiliary chemicals.

We are currently the only company capable of deploying experienced teams to safely conduct online chemical cleanings while the machine is in operation (More details here).

Key facts and competences

• Online: cleaning is done while the generator is running; the cleaning does not interfere with any regime of generator operation
• Offline: cleaning is done while the generator is shut down, usually during outages. This means reduced cleaning time, reduced costs
• Emergency cleaning: fast and professional support from the beginning to end to prevent forced outages
• Preventive maintenance: Copper oxides are formed naturally, and might cause a forced outage. Well planned preventive maintenance will keep the unit running and the cleaning also helps assess the unit condition
• Restoring a stable oxide layer: In some cases, an instable oxide layer can cause problems. We can replace it with an optimally-formed and stable layer.
• Targeted single bar treatment: In cases of severe plugging, an approach combining mechanical with targeted chemical cleaning is usually successful.

No plant interference: our equipment is set up at the cooling water skid, usually located in the basement and out of the way
No environmental impact: zero liquid waste
Root cause analysis: Before, during and after a cleaning, SvoBaTech is supporting you in researching the root cause for the plugging

Our expertise assures you optimal guidance on design, operation and maintenance of your stator cooling water system.

Where we can help

• Unsure about interpretation of observations and measurement data from the generator and its cooling water system?
• Unsure whether your stator cooling water system is about to cause load reductions or worse?
• Plan to update or modify your cooling water system?
• Is your instrumentation up to the task?
• Consider changing your water chemistry?
• Do you encounter re-occurring problems?

With our combined expertise from more than 100 years experience we are happy to assist you!

Statorguard is the first hydrogen leakage monitoring system which not only monitors the hydrogen leakage rate and injects CO2 free air, but also monitors the CO2 concentration of the injected air and ensures a non-explosive atmosphere due to the improved injection
concept.

What you get

• Compact design
  • CO2-free air injection, hydrogen leakage monitoring and control display in one place
  • Delivery of complete modular skids
• Easy to install during operation
  • Simple, standardized interfaces
  • Requires only three connections at the stator cooling water system and access to instrument air
• Stand-alone island solution or integrated plant solution available
• Low maintenance
  • CO2 removal efficacy is monitored; CO2 and H2 sensor calibrations are done automatically
• Visual alarms
  • Configurable alarms and warnings for relevant parameters

International patent pending

In some situations it can be beneficial to run a stator cooling water system with alkaline chemistry. An analysis of the situation is necessary to assess whether this measure is useful or not.
After working with and analyzing all popular designs in the industry, we designed a low-maintenance, failsafe and modular system to satisfy all needs. It can be installed and commissioned while the plant is operating.

What you get

• Recommendations on
• • Benefit of alkalization
  • Best configuration
• Delivery of complete modular skids
  • Easy to install during operation with standardized interfaces
  • Easy integration in all stator cooling water systems
  • Controls pH reliably with a tolerance of +/- 0.05 units
  • Low and simple maintenance
• Several independent safeguards against over-injection
• Extra low maintenance option available
• Stand-alone island solution available