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Question 11

________ has been a major problem on coke drum shells.

    Correct Answer: A

    Thermal fatigue has been a major problem on coke drum shells. This occurs due to the frequent and significant temperature changes that these structures undergo during operational cycles, leading to the formation of cracks over time.

Discussion
ahmadmmOption: A

Thermal fatigue cracking has been a major problem in coke drum shells. Thermal fatigue cracking can also occur on coke drum skirts where stresses are promoted by a variation in temperature between the drum and skirt