In our refinery Crude heater when open it we see moisture on whole pipe. Can you explain the possible cause for that?
Eric Vetters, ProCorr Consulting Services, email@example.com
On the inside of the tubes, moisture will be present from steam used to get the furnace hydrocarbon free. If you are talking about the outside of the tubes I would need to understand more about your climate and shut down procedures to anything more than guess.