What is the liquid-to-gas expansion ratio of LNG when vaporized at atmospheric pressure?
Direct Answer
Option A: Approximately 1 : 600
LNG undergoes a significant volumetric expansion when transitioning from liquid to gas, with a ratio of approximately 1:600 at atmospheric pressure. This physical property is critical for cargo tank design and pressure relief valve sizing, as even a small liquid leak can generate a massive volume of flammable vapor.
All Options
Detailed Explanation & Context
LNG undergoes a significant volumetric expansion when transitioning from liquid to gas, with a ratio of approximately 1:600 at atmospheric pressure. This physical property is critical for cargo tank design and pressure relief valve sizing, as even a small liquid leak can generate a massive volume of flammable vapor.
Relevant Framework: STCW 2010 Manila Amendments • DG Shipping E-Learning & Exit Exam Standards • Liquefied Gas Tanker Cargo Operations (LGTCO/LGTF).
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