Free API API-571 Exam Questions

Which of the following materials is not susceptible to high temperature hydrogen attack? 

With sulfuric acid corrosion, mix points with _______ cause heat to be released and high corrosion rates can occur where the acid becomes diluted. 

When caustic stress corrosion cracking is a concern, steam out of _________ carbon steel piping and equipment should be avoided

The signature mark of a fatigue failure is a _______ type fingerprint that has concentric rings.

At elevated temperatures, dissimilar weld metal cracking is aggravated by the diffusion of carbon out of the weld metal and into the base metal. The temperature at which carbon diffusion becomes a concern is above ________.