Question 1 Remove Topic Question Text What are the two main principles for unloading liquefied gas cargo tanks? Explanation These are the two standard discharge arrangements covered in the operational material. Option 1 Remove Option 2 Remove Option 3 Remove Option 4 Remove Add Option
Question 2 Remove Topic Question Text When unloading from a closed cargo tank, what generally happens to tank pressure? Explanation Tank pressure usually falls during discharge unless vapour is returned or pressure is made up by another method. Option 1 Remove Option 2 Remove Option 3 Remove Option 4 Remove Add Option
Question 3 Remove Topic Question Text During unloading without vapour return, what is the preferred pressure strategy? Explanation Adequate pressure support helps maintain transfer rate and prevents unstable conditions. Option 1 Remove Option 2 Remove Option 3 Remove Option 4 Remove Add Option
Question 4 Remove Topic Question Text Which method can be used to provide vapour pressure make-up during discharge without vapour return? Explanation The vaporizer can generate cargo vapour to support tank pressure during discharge. Option 1 Remove Option 2 Remove Option 3 Remove Option 4 Remove Add Option
Question 5 Remove Topic Question Text Which parameter should be monitored continuously during cargo discharge? Explanation Seal oil condition is a key machinery safety check during pump operation. Option 1 Remove Option 2 Remove Option 3 Remove Option 4 Remove Add Option
Question 6 Remove Topic Question Text If leakage, hose fracture, or a serious cargo pressure alarm occurs during discharge, what is the immediate action? Explanation The emergency response sequence requires immediate shutdown and isolation of transfer operations. Option 1 Remove Option 2 Remove Option 3 Remove Option 4 Remove Add Option
Question 7 Remove Topic Question Text What is a typical sign of cavitation in the cargo pump system? Explanation Cavitation causes erratic hydraulic performance and unstable motor load. Option 1 Remove Option 2 Remove Option 3 Remove Option 4 Remove Add Option
Question 8 Remove Topic Question Text What approximate liquid remainder is left per tank half when the pump stops in the referenced training material? Explanation This figure is used in the training material to emphasize why stripping and residue removal remain necessary. Option 1 Remove Option 2 Remove Option 3 Remove Option 4 Remove Add Option
Question 9 Remove Topic Question Text Why must residual liquid be removed before changing grades or preparing for tank entry? Explanation Residual liquid continues to boil and hold local steel temperature down until the liquid is gone. Option 1 Remove Option 2 Remove Option 3 Remove Option 4 Remove Add Option
Question 10 Remove Topic Question Text What is the maximum permitted hot gas temperature during boil-off removal of residual liquid? Explanation Hot gas temperature must remain within limits to avoid damaging tanks and associated systems. Option 1 Remove Option 2 Remove Option 3 Remove Option 4 Remove Add Option
Question 11 Remove Topic Question Text Which change indicates that all liquid has likely been removed from the cargo tank? Explanation Once the last liquid is gone, the tank bottom warms rapidly and pressure behaviour changes. Option 1 Remove Option 2 Remove Option 3 Remove Option 4 Remove Add Option
Question 12 Remove Topic Question Text What target temperature is given for the secondary barrier during tank warm-up? Explanation The training package uses +5C as the secondary barrier warm-up target. Option 1 Remove Option 2 Remove Option 3 Remove Option 4 Remove Add Option
Question 13 Remove Topic Question Text If vapour leakage to the IBS is suspected, what monitoring routine is recommended initially? Explanation Structured trend monitoring helps determine whether the condition is stable or worsening. Option 1 Remove Option 2 Remove Option 3 Remove Option 4 Remove Add Option
Question 14 Remove Topic Question Text How many warning signs are considered enough to require immediate action if liquid leakage to the IBS is suspected? Explanation The training material uses a two-sign threshold for immediate escalation. Option 1 Remove Option 2 Remove Option 3 Remove Option 4 Remove Add Option
Question 15 Remove Topic Question Text If the IBS is contaminated by cargo leakage, how should IBS pressure be controlled? Explanation Keeping pressure just below the relief setting avoids unnecessary lift while maintaining control. Option 1 Remove Option 2 Remove Option 3 Remove Option 4 Remove Add Option
Question 16 Remove Topic Question Text What is an early warning sign of secondary barrier deterioration in IBS/IS monitoring? Explanation Divergence in the monitored curves indicates changing thermal behaviour across the barrier system. Option 1 Remove Option 2 Remove Option 3 Remove Option 4 Remove Add Option
Question 17 Remove Topic Question Text What should be done if an extensive or spreading cold spot develops in a cofferdam? Explanation A growing cold spot suggests abnormal heat leakage and requires immediate protective action. Option 1 Remove Option 2 Remove Option 3 Remove Option 4 Remove Add Option
Question 18 Remove Topic Question Text What is the most effective extinguishing agent for gas fires in the training material? Explanation Dry powder is typically the primary extinguishing agent for gas fires because of its rapid flame knockdown capability. Option 1 Remove Option 2 Remove Option 3 Remove Option 4 Remove Add Option
Question 19 Remove Topic Question Text When jettisoning cargo in an emergency, what discharge limit is specified in the training material? Explanation The jettisoning guidance limits the rate to control the emergency and reduce escalation risk. Option 1 Remove Option 2 Remove Option 3 Remove Option 4 Remove Add Option
Question 20 Remove Topic Question Text What is the correct action if communication fails during an STS transfer? Explanation Reliable communication is a basic safety requirement for continuing STS cargo operations. Option 1 Remove Option 2 Remove Option 3 Remove Option 4 Remove Add Option
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