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Boiler HP Steam Line Preservation

Boiler HP Steam Line Preservation

Boiler HP Steam Line Preservation

(OP)
Good day,
I need someone who has experience in boiler (HRSG) preservation. One of our HRSG's is under refurbishment (replacement of a bundle of tubes or harps). How do we stop the corrosion to build-up on the internal surface of piping? At what percentage of oxygen that corrosion will not occur?

RE: Boiler HP Steam Line Preservation

You can remove moisture by using desiccant and possibly several air heaters to keep the humidity levels below 20% to avoid rust.

RE: Boiler HP Steam Line Preservation

(OP)
Thanks metengr!

Is there a written theory that if we keep the relative humidity below 20% and continuous hot air blowing in order to avoid rust? In this condition what is the percentage of oxygen?

RE: Boiler HP Steam Line Preservation

It's not so much the oxygen content as the moisture. This is from experience in the power generation industry for over 40 years.

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