API API-571

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

Which material does not have an endurance limit?

_____________ usually occurs when a colder liquid contacts a warmer metal surface. 

Phosphoric acid corrosion is usually found in ________ areas. 

Steam blanketing is when the heat flow balance is disturbed; individual bubbles join to form a steam blanket, a condition known as Departure from Nucleate Boiling (DNB). Once a steam blanket forms, tube rupture can occur rapidly, as a result of _________.