Hydrogen stress cracking is the same mechanism that is responsible for sulfide stress corrosion cracking in wet H(2)S environments except that HF acid is generating the __________.

Cracking of a metal due to stress relaxation during PWHT or in service at elevated temperatures is called ______. It is most often found in heavy wall sections.

Refractory lined equipment should be designed for erosion, thermal shock and __________.

CORRECT TEXT
Ways to prevent thermal fatigue include reducing stress concentrators by making _______________ transitions at places where the wall thickness changes.

Sensitization occurs in the _____ to _______ range.