Under what temperature condition is the inside of a vessel skirt more susceptible to corrosion from condensed moisture?

The condition of the inside of a vessel skirt being more susceptible to corrosion from condensed moisture occurs at temperatures less than 100°F. At this temperature threshold, moisture can condense more readily on surfaces due to the cooling effect of the environment as well as low operating temperatures. When the temperatures are below 100°F, the metal surfaces can become cooler than the dew point of the surrounding air, and thus, moisture can easily accumulate and lead to corrosion.

This corrosion is a significant concern, as the presence of moisture facilitates electrochemical reactions that can deteriorate materials over time, especially if the metal is not adequately protected or coated. For operational and safety considerations, it is crucial to monitor and manage temperatures in this range to minimize corrosion risks and ensure the integrity of pressure vessels.