| Course Snapshot & Objectives
Course ObjectivesUpon completion of this course, the operating personnel will be able to:- Identify DOT Subpart H - Corrosion Control regulations 195.563, 195.565, 195.567, 195.573, and 195.585 regarding liquid pipeline systems.
- List the four conditions that must be met before a corrosion cell can function.
- Describe why and where corrosion on metal structures occurs.
- State the function of the anodic and cathodic areas and their roles in protecting aboveground steel tanks from metal loss.
- Describe stray (interference) currents and direct current (DC).
- Identify general corrosion, pitting corrosion, and various types of corrosion cells on steel storage tanks.
- Describe the following two methods used to apply cathodic protection - galvanic (sacrificial) anodes and impressed current systems.
- State the external corrosion control testing intervals for cathodic protection systems and breakout tank inspections.
- Explain the role insulated (electrical isolation) joints and protective coatings play in cathodic protection efforts.
- Describe the theory of anode operation and the procedure for anode installation.
- Take measurements for tank bottom-to-soil potential readings while considering the IR drop.
- Take measurements for tank bottom-to-soil potential readings at the center of the tank bottom.
- Recognize abnormal operating conditions (AOC) related to the performance of rectifier inspections.
- React to these abnormal operating conditions.
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