GASCO Exit Exam • Set 1 Question 7 of 30

What risk is associated with rapid liquid cargo release onto steel deck structures?

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Direct Answer

Option B: Brittle fracture of hull steel due to extreme cold

Cryogenic liquids cause severe localized thermal shock and brittle fracture in normal ship steel. Water curtains and deck protection are used.

All Options

Steel expansion and warping

Brittle fracture of hull steel due to extreme cold (Correct Answer)

Corrosion of hull plates

Immediate magnetic interference

Detailed Explanation & Context

Cryogenic liquids cause severe localized thermal shock and brittle fracture in normal ship steel. Water curtains and deck protection are used.

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 1

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Q1 What is the primary component of Liquefied Natural Gas (LNG)? Q2 At atmospheric pressure, what is the approximate boiling point of methane? Q3 Which code governs the construction and equipment of ships carrying liquefied gases in bulk? Q4 What is the function of Boil-Off Gas (BOG) on an LNG carrier? Q5 What gas is used to inert cargo tanks on gas carriers before introducing gas cargo? Q6 What is the Maximum Allowable Relief Valve Setting (MARVS) for a Type C independent tank on an LPG carrier? Q7 What risk is associated with rapid liquid cargo release onto steel deck structures? Q8 What type of pumps are most commonly used submerged inside LNG cargo tanks? Q9 What instrument measures low concentration flammable gas by catalytic oxidation? Q10 What safety feature automatically trips cargo valves and pumps during an emergency ESD activation?