Question 1557Deck General70% to pass
With reference to Liquefied Gas operations, what does the term "rollover" used to describe?
AI Explanation
The correct answer is C) when two or more stratified layers of different density LNG in the same tank suddenly mix together, causing a rapid increase in boil-off vapors.
Rollover in the context of liquefied gas operations refers to the sudden mixing of two or more layers of LNG in a storage tank that have different densities. This can occur when temperature and density gradients develop in the tank, leading to the formation of distinct layers. If these layers suddenly mix, it can cause a rapid increase in boil-off vapors, which can create significant safety hazards. The other options do not accurately describe the meaning of "rollover" in liquefied gas operations.
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