"carbon dioxide corrosion"

Question:

"What is present thinking on acceptable level of carbon dioxide in natural gas to minimize internal corrosion in natural gas pipelines?"

Answer:

The answer depends on other variables, i.e., fluid velocities, total pressure, etc. An old rule of thumb was based on if the carbon content was below 15 psia partial pressure, corrosion would be acceptable. I'm not certain if this axiom still applies though.

 

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