Exam API-571 All QuestionsBrowse all questions from this exam
Question 81

_________ significantly increases the probability and severity of blistering, HIC and SOHIC.

    Correct Answer: A

    Hydrogen significantly increases the probability and severity of blistering, Hydrogen Induced Cracking (HIC), and Stress-Oriented Hydrogen Induced Cracking (SOHIC). These forms of damage are specifically related to the presence of hydrogen.

Discussion
ahmadmmOption: C

Cyanides, particularly in the vapor recovery sections of FCC and delayed coking units. significantly increase the probability and severity of blistering, HIC, and SOHIC damage.