Pass Benchmark: 70% (21/30) • Standard: USCG NMC / 46 CFR

USCG Deck General (Set 39)

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Question 1 of 30

The main function of a stripping system is to __________.

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30 MCQs

#1 The main function of a stripping system is to __________. #2 The fitting at the end of a cargo line in a tank that allows suction to be taken close to the bottom of a tank is a __________. #3 What will NOT increase friction of a liquid flowing in a pipe and cause a loss of suction head? #4 What is the most commonly used material for valve construction in LNG cargo piping? #5 In accordance with regulations, what is the required bursting pressure of a cargo hose used for transferring liquefied gases? #6 If two centrifugal pumps, driven by two independent electric motors, operating at unequal speeds are discharging an inflammable liquid through a common discharge line, the higher speed pump may cause the slower pump to do which of the following? #7 On a vapor control system, what must each vessel's vapor connection flange have? #8 Which of the following conditions would be hazardous if you were using two centrifugal pumps to discharge a flammable liquid? #9 Centrifugal pumps have what advantage(s) over reciprocating pumps? #10 A deepwell pump is a type of __________. #11 All of the following steps are taken in starting a centrifugal pump, EXCEPT to __________. #12 Which method should be used to warm up the pump turbines prior to discharge? #13 Steam driven pumps are considered, by regulations, sources of vapor ignition if the steam temperature is at least what temperature? #14 Which of the following statements concerning deep well cargo pumps is correct? #15 What are submerged LNG pump bearings lubricated by? #16 The blowers of an inert gas generation system aboard a tanker, will be automatically secured if __________. #17 What is TRUE of pressure/vacuum valves? #18 What is the purpose of the relief valve of a cargo pump? #19 Which characteristic is an advantage of a butterfly valve as compared to a gate valve? #20 What is the purpose of a check valve? #21 What type of valve will usually be on the discharge side of a cargo pump on a tank vessel? #22 Pressure-vacuum relief valves on tank vessel cargo tanks should be kept in good working order to prevent __________. #23 The high-level overfill tank alarm, installed in the on-board monitoring system, must __________. #24 In an inert gas system, high pressure alarms are set in the main vapor collection line to cause an audible and visual alarm if the pressure reaches a certain level. What is the percentage of the lowest relief valve setting at which the alarm must sound? #25 You are on an inerted tankship. A low pressure alarm must be set to cause an audible and visual alarm if the pressure in the tanks cannot be maintained at more than __________. #26 Which part of the inert gas system is designed to relieve sudden large overpressures that exceed the capacity of the mechanical P/V valves? #27 After the initial cleaning of flue gas in an inert gas system the gas is passed through what device for final cleaning? #28 The deck water seal of the inert gas system __________. #29 Which of the listed functions is the purpose of a gas scrubber in an inert gas generation system? #30 In order for combustion to occur inside a piping system such as a vapor collection header in a marine emission control system, there must be __________.

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