Cathodic protection manual

TM CHAPTER 2 CATHODIC PROTECTION DESIGN Required information. resistivity increases, the corrosion rate decreases Before dec iding which type, galvanic or impressed curre nt, cathodic protection system will be usedFile Size: KB. and cathode sites will not exist. Cathodic protection is commonly used on many types of structures, such as pipelines, underground storage tanks, locks, and ship hulls. Types of cathodic protection systems. There are two main types of cathodic protection systems: galvanic and impressed current. Figure shows these two types. cathodic protection system will be used and before the system is designed, certain preliminary data must be gathered. a. Physical dimensions of structure to be protected. One important element in designing a cathodic protection system is the structure's physical dimensions (for example, length, width, height, and diameter).

cathodic protection still exists as proven on the last close-interval corrosion survey. The procedures are the same as the close-interval corrosion survey, with different minimum requirements for the potential measurements. The close-interval corrosion survey data should be used to determine where potential measurements must be taken to reasonably. CP 1 – Cathodic Protection Tester Course Manual © NACE International, 02/01/05 RP “Steel Cased Pipeline Practices” TM “Measurement Techniques Related to Criteria for Cathodic Protection on Underground or Submerged Metallic Piping Systems” TM “Measurement Techniques Related to Criteria for Cathodic Protection on. Cathodic protection is a means of reducing corrosion of a metal by artificially causing direct current to flow from external anodes, through the electrolyte (soil or water), and onto the structure to be protected. The two types of CP systems are galvanic anode and impressed current. Galvanic anode CP systems provide cathodic current by galvanic corrosion or by sacrificing one material to prevent corrosion of the other.

Corrosion Monitoring and Cathodic Protection Systems. (a) galvanized enclosure, and (b) manual taps for adjusting the voltage. Section 5 – Installation/Repair of Cathodic Protection Systems. provide sufficient documentation in order to evaluate the results generated by a. Tank Bottom Cathodic Protection System Installation Guide for MATCOR SPL™ Tank Ring Anode System. Page 1 of 4. READ THE FOLLOWING. INSTRUCTIONS.