Cathodic Protection

Savcor Cathodic Protection (CP) prevents corrosion in concrete and metallic structures.

A Cathodic Protection (CP) operates with opposite direction of the current. The current is fed through the anodes and the protected vessel is the cathode. In mild steel structures, the steel will be driven by the external current of an Electrochemical Protection System to a status of immunity against corrosion whereas stainless steel will be maintained in a region of perfect passivity.

The key for protection control is measuring the electrochemical potential of the protected structure. The required protection current is adjusted based on the potential values measured.

Anodic Protection

In Savcor Anodic Protection (AP), the metal surface is polarized with rectifiers feeding direct current through cathodes. Anodic current forms a strong passive oxide film on carbon steel and makes it corrosion resistant, even in the harshest environments. Erosion corrosion or pitting corrosion cannot cause failures on surfaces with anodic protection. Dangerous cracks by stress corrosion are also avoided. When installed in old equipment, anodic protection prevents corrosion already in action.


Online Structural Health Monitoring (OHM)

Gives Valuable Information about the Structure

Savcor OHM - a comprehensive Online Structural Health Monitoring System is essential in large valuable structures, often in critical positions, such as bridges, high-rise buildings and complex architectural showcase projects. Online measurements detect design errors, potential damage or unexpected structural response of the structure. The slow structural fatigue caused by corrosion that often remains unnoticed, is clearly visible in the measurement results.
The key features of intelligent structure concept are continuous and reliable dataflow and easily interpreted reporting utilizing Building Information Modeling (BIM) and dynamic 3D models.

Online Alkaline Measurements

for Optimized Pulp Cooking 

Control of the make-up cooking liquor, as well as initial and resulting alkali concentration, affects the uniformity of pulp produced. During the cooking process, residual alkali strength fluctuates with changes in chip composition, species, wood moisture, and the uniformity of concentration of the make-up chemicals.

Measurement of effective alkali concentration inside the digester has never been done before. The present methods require a filtered side stream which add delay and error. Savcor, together with Andritz has utilized its long experience in electrochemical measurements inside the digesters and developed an accurate in-situ alkali measurement.