Cathodic protection (CP) of stainless steels
We provide cathodic protection (CP) that prevents and control corrosion as a part of asset integrity management.
Cathodic protection services and solutions
In order to prevent corrosion from damaging and tearing down valuable assets, cathodic protection systems are installed. We have more than 35 years of experience within cathodic protection and offer various types of solutions.
For a variety of industries, we offer:
- CP modelling
- CP design
- CP inspection
- CP management and consulting
Many of these services draw from our in-house developed computer software, SeaCorrTM, which is designed to simulate CP systems. We also provide solutions for stainless steels, which in many cases are in fact prone to corrosion. Our combination of practical and theoretical approaches provides more accurate results, which is important when considering inspection intervals and life extension studies.
Resistor Controlled Cathodic Protection (RCP) for stainless steels
Resistor controlled Cathodic Protection (RCP) prevents internal corrosion of stainless steels. It is highly applicable in chlorinated seawater and produced water systems that are likely to experience severe corrosion, which in turn may increase service cost. The system is based on sacrificial anodes with resistors that control the anode output. This enables very low current densities, allowing for significantly extended protection ranges from individual anodes. RCP anodes are easily installed and extend the service life of existing piping systems.
By using RCP, you are able to improve the first time investment costs (CAPEX) with the addition of a smaller replacement cost during the operational phase and allow for the use of inexpensive, low alloyed, stainless steels as an alternative to expensive components. RCP can also be used to prevent galvanic corrosion in couplings between materials and corrosion of various highly alloyed steel components in sea water systems.
RCP design is carried out through our simulation software, RCPSimTM. This modelling tool allows us to easily carry out mathematical calculations such as anode distribution, current density distribution, anode consumption and resistor values, all in one integrated model. Calculations are based on FDM (Finite Difference Method), where complex boundary conditions are handled by linearisation and iterations. RCPSimTM handles complex piping networks with branching pipes in various diameters, with heat exchangers, filters, valves and pumps implemented into one model.
Consultancy and Expertise
Our vast experience within asset integrity management makes us capable of making qualified decisions and evaluations. This, in addition to our variety of specialists within areas ranging from materials technology, structural integrity to monitoring and inspection, makes us a preferred partner and supplier to the offshore industry.
Do not hesitate to contact us if you would like to receive more information, or if you have any questions or inquiries regarding cathodic protection with the nuclear power industry.