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

___________ is the result of cyclic stresses caused by variations in temperature. 

Soil to Air interface areas are usually more susceptible to corrosion than the rest of the structure because of ___________ and __________ availability. 

Creep damage is found in high temperature equipment operating above the ________. Fired heater tubes and components, Catalytic reactors, FCC reactors and FCC fractionator and regenerator internals all operate in or near this.

________ of a component is the most important factor in determining a components resistance to mechanical fatigue.