What is the gas above the liquid in an LNG...

Question 1 / 2707066636ee728f7522a1c517c78

Question 1 of 2707066636ee728f7522a1c517c78

What is the gas above the liquid in an LNG tank?

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Question 1 of 27070

Q

What is the gas above the liquid in an LNG tank?

🔍 Key Concepts

• Behavior of liquefied natural gas (LNG) in a closed cargo tank • What forms when a liquefied gas starts to warm/boil in a tank • Difference between inert gas, nitrogen, and the cargo’s own vapor

💭 Think About

• When LNG is carried in a tank, what happens to some of the liquid as it absorbs heat over time? • In a properly operated LNG cargo tank, is the space above the liquid usually filled with something added from outside, or mainly with something that comes from the cargo itself? • Which of the options listed is actually the same substance as the cargo, just in a different physical state?

✅ Before You Answer

• Identify which answer choice is the same material as LNG but in vapor form • Eliminate gases that are normally used for inerting or padding tanks for other types of cargoes • Be sure you understand that LNG is primarily methane, and think about what its vapor phase would be called

Question 1 of 27070

Q

What is the gas above the liquid in an LNG tank?

A

very dry air

B

inert gas

C

gaseous natural gas

D

nitrogen

Question 1 / 2707066636ee728f7522a1c517c78

Question 1 of 2707066636ee728f7522a1c517c78

What is the gas above the liquid in an LNG tank?

Back

Question 1 of 27070

Q

What is the gas above the liquid in an LNG tank?

🔍 Key Concepts

• Behavior of liquefied natural gas (LNG) in a closed cargo tank • What forms when a liquefied gas starts to warm/boil in a tank • Difference between inert gas, nitrogen, and the cargo’s own vapor

💭 Think About

• When LNG is carried in a tank, what happens to some of the liquid as it absorbs heat over time? • In a properly operated LNG cargo tank, is the space above the liquid usually filled with something added from outside, or mainly with something that comes from the cargo itself? • Which of the options listed is actually the same substance as the cargo, just in a different physical state?

✅ Before You Answer

• Identify which answer choice is the same material as LNG but in vapor form • Eliminate gases that are normally used for inerting or padding tanks for other types of cargoes • Be sure you understand that LNG is primarily methane, and think about what its vapor phase would be called