API-571 Questions Bank

Which of the following materials are subject to mechanical fatigue?

Corrosion under insulation is more severe between ________ and ____________.

Short term overheating is a permanent deformation occurring at relatively _________ stress levels as a result of localized overheating. This usually results in bulging and failure by stress rupture.

Regular and controlled carbon grades of stainless steels such as types 304/304H and 316/316H are particularly susceptible to sensitization in the weld HAZ. Low carbon “L” grades are less susceptible and usually can be welded without sensitizing. The “L” grades will not sensitize provided long term operating temperatures do not exceed about __________.