In power generation with thermal power stations and desalination plants, all experience has shown that the most severe corrosion problems have been located in the cooling water systems. Especially when the cooling water has been sea water, fresh or back fish water. This has been the case both for fossil-fueled power stations and atomic power stations.
The main reason for this is of course that seawater and back fish water as such are very corrosive electrolyte but there is also several other factors prevailing in cooling water systems, which in different ways may increase the corrosion rate of the materials used. Examples are :
- High water velocity and turbulent flow.
- Presence of impurities in the water.
- Fouling increasing localized corrosion.
- Chlorination of water.
Among other corrosion preventive measures, cathodic protection has been widely used in counteracting corrosion in many different parts of the cooling water systems. As generally being a very effective and reliable protective measure, cathodic protection has to a large extent been used with great success.
The need for cathodic protection of pumps is significantly related to the design of the vertical turbine pump. There is also a risk of crevice corrosion on the internal parts of the pump in contact with water, especially during the periods when water is not flowing and stagnant water is in the pumps. Both galvanic and crevice corrosion can be avoided by using correctly designed CP Systems.
The detailed CP design cannot be completely standardized because of differences in design from one pump to another. In the case of the sacrificial method of the cathodic protection system, the anode design lifetime is by the requirement of routine maintenance of the pump at regular intervals, when the pump casing is reopened and coated reapplied and sacrificial anodes replaced.
Benefits of using Consultech :
- Experience with various kinds of cathodic protection systems spanning over 58 years.
- Cathodic protection system testing, installation, and upkeep experience for all kinds of structures globally.
- NACE corrosion engineers and professionals with high levels of training.
- Team members with prior client-side CP project expertise.
- Having experience leading corrosion divisions of big utilities and pipeline industries and multimillion-dollar CP projects.
- Compared to certain regularly used CP systems, Consultech’s several unique cathodic protection technologies are more affordable and have longer lifetimes.
Your corrosion issues are CONSULTECH’s primary concern. In addition to project management and comprehensive turnkey solutions, we are prepared to help with your requirements for corrosion engineering and field service, including design, production, installation, commissioning, and continuing maintenance. Additionally, we provide a huge selection of unique corrosion protection materials.
Contact our team of corrosion specialists for additional information, to ask a question, or to request a price. Within 24 hours, we’ll give you a call or reply to your email. Call +919824077820 for assistance and email consultech_cp@yahoo.com right away.
