Cathodic Protection Training Bench Model ETR 009
Cathodic Protection Training Bench Model ETR 009
Sci-tech Cathodic Protection Training Bench Model ETR 009 is a technique to control the corrosion of a metal surface by making it work as a cathode of an electrochemical cell. This is achieved by placing in contact with the metal to be protected another more easily corroded metal to act as the anode of the electrochemical cell. Cathodic protection systems are most commonly used to protect steel, water or fuel pipelines and storage tanks, steel pier piles, ships, offshore oil platforms and onshore oil well casings.
Item Description
The present specification deals with the description of a training device for the introduction to the Cathodic Protection discipline.
The specification limits its view over the functions of the training bench, giving the primary list of experiments with which the student can try by himself to practically deepen into the phenomena of the corrosion control of metals in contact with the electrolyte. The theoretical study that precedes the experiments is reported in the manual, essential part of the bench. In this book the background and the scope of the experiment are easily explained.
The bench provides facilities to study the case of isolated systems, as well as the case of systems where different metals are coupled together. Particular attention is given to the presence or not of several kinds of insulating materials over the surfaces of the samples, in order to demonstrate the different behavior of the same material when coated or bare.
The bench provides suitable devices to highlight the concept of the free corrosion potential, measured with easy to use reference electrodes and means suitable to build with a certain accuracy the polarization curves.
Protective techniques are represented as per sacrificial anodes systems of several type of metals as per impressed current Cathodic Protection systems, with the possibility to see which is the
explanation of the use of constant voltage, constant current and constant potential feeders.
The bench is provided with measuring facilities characterized by suitable sensitivity and accuracy.
A suitable multi‐channel interface can connect the bench to a PC in order to record the experiment results and give the trace for further studies.
Technical Specifications
CATHODIC PROTECTION TRAINING BENCH LIST OF EXPERIMENTS:
‐ The use of the voltmeter
‐ The reference cell
‐ The Daniel Cell
-The first and second species conductors
‐ Introduction to the Cathodic Protection Criteria
-Introduction to the sacrificial anodes in Zn, Mg, and Al
‐ Introduction to the Cathodic Protection Impressed Current System
‐ The consumable impressed current anode (Fe)
‐ The inert impressed anode (Ti‐Pt and MMO)
‐ Resistance concept, circuit for the first and second species conductors
‐ Introduction to the specific resistance concept over three different first species conductors (Fe; Cu; Fe‐Ni)
– Introduction to the concept of interference due to the presence of external electric fields on buried or submerged structures (Stray Currents)
‐ Air presence influence on resistivity (insufflate air effect)
‐ Current density introduction and Tafel Curves construction
‐ Temperature effect over the Current density (thermostatic cell)
‐ Air presence influence over the Current density (insufflate air effect)
‐ Coating and Current density
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