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Internal Corrosion Seminars

The Detection and Monitoring of Corrosive Conditions in Natural Gas Pipelines

   A basic but thorough course on internal corrosion in natural gas pipelines. It is designed to be of value to both inexperienced and experienced corrosion personnel. The format structure begins with a pipeline that has been aquired by the attendees' company. The attendee must prepare a complete and thorough investigation as to the internal corrosion tendencies to be expected in the newly aquired pipelime. The instructor "walks" the attendee through the process of obtaining valid data in order to accurately predict and monitor corrosion rates.

Seminar Outline:

  1. Corrosion Cell Chemistry
    1. Corroding agents - CO2, H2S, O2, NaCl, Bacteria, Organic acids, Etc.
  2. Gas Analysis - What to look for on gas chromatograph
    1. Field Analysis
    2. Laboratory Analysis
    3. Reading Gas Analysis Sheet- Data Interpretation
  3. Liquid Analysis - What to look for on water analysis report
    1. Liquids and Problems
    2. Sampling Procedures
    3. Field Analysis of Condensed Water
    4. Reading Water Analysis report - Data Interpretation
    5. Microbiological Investigations and Interpretation
  4. Solid Analysis
    1. Solids Analysis
    2. Solids Collection
    3. Field Analysis
    4. Laboratory Analysis - Data Interpretation
  5. Gas Flow Conitions
    1. Liquid Flow Patterns Video
    2. Gas Flow Calculations
  6. Internal Corrosion Monitoring
    1. Corrosion Coupons
      1. Types, Sizes, Placement, Etc.
      2. Calculating MPY Using Weight Loss Coupons
      3. MPY Standards - What's Acceptable
    2. Electrical Resistance Probes
      1. Types, Sensitivites, Electrode Styles, Alloys, Etc.
      2. How to Choose the Correct ER Probe Element
      3. Advantages and Disadvantages of ER Probes
    3. Hydrogen Probes
      1. Types, Placement, Etc.
      2. How Does it Work and/or Show Corrosion Attack
      3. Data Interpretation
  7. Non-Destructive Testing
    1. Ultrasonic
    2. Magnetic Flux Pig
    3. Picture Pig
    4. X-Ray
  8. Conculsion of Detection Investigation
    1. Reveiw of Information
    2. 11 Questions to Ask When Evaluating a System for Corrosive Tendencies
  9. Monitoring Internal Corrosion Control Methods
    1. Valid Methods
    2. Invalied Methods
  10. Case Strudies - "Natural Gas Pipeline Failures Caused by Internal Corrosion, Aided by Improper Placement and/or Evaluation of Corrosion Coupons"
    1. Case History 1
    2. Case History 2
  11. Round Table Discussion of Any Questions from Attendees

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