Question 1 Remove Topic Question Text What are the two main principles for unloading cargo tanks listed on Day 5? Explanation The Day 5 unloading principles slide identifies discharge with vapour return and discharge without vapour return as the two main methods. 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 tank, what generally happens to tank pressure? Explanation The unloading principles slide notes that tank pressure generally decreases when unloading from a closed tank. Option 1 Remove Option 2 Remove Option 3 Remove Option 4 Remove Add Option
Question 3 Remove Topic Question Text What type of cargo pump is described in the Day 5 cargo pump overview? Explanation The Day 5 pump overview describes cargo pumps as single-stage, electric-driven, fixed-speed, centrifugal deepwell pumps. Option 1 Remove Option 2 Remove Option 3 Remove Option 4 Remove Add Option
Question 4 Remove Topic Question Text What rated capacity is given for the Day 5 cargo pumps? Explanation The cargo pump overview slide gives a rated pump capacity of 350 m3/h. Option 1 Remove Option 2 Remove Option 3 Remove Option 4 Remove Add Option
Question 5 Remove Topic Question Text At the beginning of the cargo pump operation procedure, how much should the discharge valve be opened? Explanation The procedure specifies the discharge valve should initially be approximately 10% open. Option 1 Remove Option 2 Remove Option 3 Remove Option 4 Remove Add Option
Question 6 Remove Topic Question Text What should be done with the tank filling valve before starting the cargo pump? Explanation The pump procedure requires the tank filling valve to be fully open before starting the pump. Option 1 Remove Option 2 Remove Option 3 Remove Option 4 Remove Add Option
Question 7 Remove Topic Question Text Where are the booster pumps located? Explanation The booster pump overview states that two cargo booster pumps are located on deck close to the heater and vaporizer. Option 1 Remove Option 2 Remove Option 3 Remove Option 4 Remove Add Option
Question 8 Remove Topic Question Text What is the best practice for tank pressure during unloading without vapour return? Explanation The slide advises maintaining high cargo tank pressure during unloading without vapour return to avoid pressure-related issues. Option 1 Remove Option 2 Remove Option 3 Remove Option 4 Remove Add Option
Question 9 Remove Topic Question Text Which method is listed to provide pressure make-up and avoid vacuum during unloading without vapour return? Explanation One listed pressure make-up method is supplying vapour by evaporating cargo liquid in the cargo vaporizer. Option 1 Remove Option 2 Remove Option 3 Remove Option 4 Remove Add Option
Question 10 Remove Topic Question Text Which parameter should be monitored continuously during discharging operations? Explanation Critical discharge monitoring points include tank pressure and level, discharge pressure, mechanical seal oil level, and motor ammeters. Option 1 Remove Option 2 Remove Option 3 Remove Option 4 Remove Add Option
Question 11 Remove Topic Question Text If leakage, hose fracture, or tank pressure alarm occurs during discharge, what is the immediate response? Explanation The emergency response section instructs operators to activate the ESD system if leakage, hose fracture, or tank pressure alarm occurs. Option 1 Remove Option 2 Remove Option 3 Remove Option 4 Remove Add Option
Question 12 Remove Topic Question Text When liquid height falls below 2 meters, what should be done to avoid cavitation? Explanation The tank emptying procedure says to throttle the discharge valve progressively when liquid level is below 2 meters to avoid cavitation. Option 1 Remove Option 2 Remove Option 3 Remove Option 4 Remove Add Option
Question 13 Remove Topic Question Text What is a sign of cavitation in the cargo pump system? Explanation The presentation identifies unstable discharge pressure and ammeter readings as signs of cavitation. Option 1 Remove Option 2 Remove Option 3 Remove Option 4 Remove Add Option
Question 14 Remove Topic Question Text What approximate liquid remainder is left per tank half when the pump stops? Explanation The final stage slide states an approximate liquid remainder of 171 liters per tank half when the pump stops. Option 1 Remove Option 2 Remove Option 3 Remove Option 4 Remove Add Option
Question 15 Remove Topic Question Text Why may tank warming be required before loading a new cargo? Explanation Warming is needed when a warmer cargo will be loaded after a colder one to prevent vapour condensation in the cold tank. Option 1 Remove Option 2 Remove Option 3 Remove Option 4 Remove Add Option
Question 16 Remove Topic Question Text Why must residual liquid be removed before changing grades or preparing for tank entry? Explanation Residual liquid continues to vaporize and keeps the surrounding temperature at the liquid's boiling point, so it must be removed. Option 1 Remove Option 2 Remove Option 3 Remove Option 4 Remove Add Option
Question 17 Remove Topic Question Text Before tank liquid level falls below 1 meter during stripping, what is recommended? Explanation The presentation recommends both pumps be running before liquid falls below 1 meter to avoid starting at very low levels. Option 1 Remove Option 2 Remove Option 3 Remove Option 4 Remove Add Option
Question 18 Remove Topic Question Text During boil-off removal of residual liquid, what is the maximum permitted hot gas temperature? Explanation The hot gas temperature control slide clearly states hot gas temperature shall not exceed +80C. Option 1 Remove Option 2 Remove Option 3 Remove Option 4 Remove Add Option
Question 19 Remove Topic Question Text What is one indication that all liquid has been removed from a tank? Explanation The slides state that tank pressure levels off and tank bottom temperature suddenly rises when all liquid has been removed. Option 1 Remove Option 2 Remove Option 3 Remove Option 4 Remove Add Option
Question 20 Remove Topic Question Text What target temperature is given for the secondary barrier during tank warm-up? Explanation The warm-up time estimates slide gives a target temperature of +5C on the secondary barrier. Option 1 Remove Option 2 Remove Option 3 Remove Option 4 Remove Add Option
Question 21 Remove Topic Question Text What hourly monitoring routine is recommended if vapour leakage to the IBS is suspected? Explanation The vapour leakage response protocol calls for hourly records over 8 hours without changing N2 flow initially. Option 1 Remove Option 2 Remove Option 3 Remove Option 4 Remove Add Option
Question 22 Remove Topic Question Text How many warning signs are considered enough to require immediate action for liquid leakage to the IBS? Explanation The Day 5 liquid leakage slide states that any 2 of the 5 warning signs require immediate action. Option 1 Remove Option 2 Remove Option 3 Remove Option 4 Remove Add Option
Question 23 Remove Topic Question Text If liquid leakage to IBS is suspected, to what level should contaminated IBS pressure be kept? Explanation The emergency response calls for venting the contaminated IBS and keeping pressure about 5-10 mbar below the 30 mbarg relief valve set point. Option 1 Remove Option 2 Remove Option 3 Remove Option 4 Remove Add Option
Question 24 Remove Topic Question Text What is an early warning sign of secondary barrier deterioration in IBS/IS monitoring? Explanation The monitoring slide states that diverging K1 curves are an early warning of secondary barrier deterioration. Option 1 Remove Option 2 Remove Option 3 Remove Option 4 Remove Add Option
Question 25 Remove Topic Question Text What is the maximum allowed value of ΔL = L(IBS) - L(Tank) when using the barrier punching device? Explanation The presentation warns that ΔL must stay below 0.5 m at all times during pump-out using the messenger or punching device. Option 1 Remove Option 2 Remove Option 3 Remove Option 4 Remove Add Option
Question 26 Remove Topic Question Text What should be done if an extensive or spreading cold spot develops in a cofferdam? Explanation The insulation deterioration slide says extensive or spreading cold spots in a cofferdam require maximum cofferdam heating. Option 1 Remove Option 2 Remove Option 3 Remove Option 4 Remove Add Option
Question 27 Remove Topic Question Text At what alarm level does ESD activate in the cargo overfilling protection scheme? Explanation The cargo overfilling slide states that LAEH at 99.0% activates ESD and stops all cargo operations. Option 1 Remove Option 2 Remove Option 3 Remove Option 4 Remove Add Option
Question 28 Remove Topic Question Text What is identified as the most effective extinguishing agent for gas fires? Explanation The emergency response slide clearly states that dry powder is the most effective extinguishing agent for gas fires. Option 1 Remove Option 2 Remove Option 3 Remove Option 4 Remove Add Option
Question 29 Remove Topic Question Text When jettisoning cargo, what discharge capacity limit is specified? Explanation The jettisoning procedure specifies limiting discharge to one cargo pump capacity only. Option 1 Remove Option 2 Remove Option 3 Remove Option 4 Remove Add Option
Question 30 Remove Topic Question Text What is the correct action if communication fails during an STS transfer? Explanation The STS transfer slide states that communication failure means all operations must be suspended until communications are restored. Option 1 Remove Option 2 Remove Option 3 Remove Option 4 Remove Add Option
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