_________ is the main concern during start-up, shutdown and/or hydro testing for equipment/piping operating at elevated temperatures. This event can also occur in an auto refrigeration event in units processing light hydrocarbons.
A) Stress fracture
B) Carburization
C) Spheroidization
D) Brittle fracture

Question

Quizplus · Accepted Answer

The main concern during start-up, shutdown, and/or hydro testing for equipment/piping operating at elevated temperatures is brittle fracture. This occurs due to the rapid temperature changes and thermal stresses that can cause the material to become brittle and prone to cracking or fracturing. Carburization, spheroidization, and stress fractures are also important considerations in high-temperature applications, but are not the main concern during start-up, shutdown, and hydro testing.

_________ Is the Main Concern During Start-Up, Shutdown And/or Hydro