GASCO Exit Exam • Set 5 Question 2 of 30

How is BOIL OFF gas generated

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Direct Answer

Option D: All of the abov

Boil-Off Gas (BOG) is the continuous natural vaporization of cryogenic liquefied gas (like LNG at -161.5°C) caused by ambient heat ingress through the cargo tank insulation.

All Options

Evaporation

Heat ingress

Drop in pressure

All of the abov (Correct Answer)

Detailed Explanation & Context

Boil-Off Gas (BOG) is the continuous natural vaporization of cryogenic liquefied gas (like LNG at -161.5°C) caused by ambient heat ingress through the cargo tank insulation.

Relevant Framework: STCW 2010 Manila Amendments • DG Shipping E-Learning & Exit Exam Standards • Advanced Training for Liquefied Gas Tanker Cargo Operations (GASCO).

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More Questions in GASCO Set 5

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Q1 What characteristics should insulation materials possess for use in gas carriers? Q2 Which of the following is the ultimate source of energy for us? Q3 Why strainers are commonly installed in the cargo piping system? Q4 Which of these would you consider essential equipment to carry when working on the deck of ship carrying ammonia? Q5 What is the condition of inert gas as it is produced by the boilers or inert gas generator? Q6 For what reason cargo sampling is necessary in gas tanker? Q7 What is the MAIN danger to be guarded against when discharging using a cargo heater with sea water as the heating medium? Q8 Magnesium, Titanium, Sodium, Lithium and Potassium are classified as Q9 What are the symptoms of Asphyxiant , when LPG and LNG carried as cargo? Q10 Inert gas- How is sea water supplied to the deck seal ?