Pass Benchmark: 70% (21/30) • Standard: USCG NMC / 46 CFR
USCG Engineering Safety & Environmental Protection (Set 4)
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Question 1 of 30
To prevent oil from escaping into the sea when ballasting through the cargo piping system, you should FIRST __________.
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30 MCQs #1 To prevent oil from escaping into the sea when ballasting through the cargo piping system, you should FIRST __________. #2 Water ballast placed in a tank that has been crude oil washed, but not water rinsed, shall be regarded as __________. #3 Which of the following procedures reduces the possibility of an interior ventilation duct fire from rapidly spreading? #4 When welding or burning aboard a vessel, you must be certain that the space __________. #5 A fire is considered 'under control' when __________. #6 The Muster List ("Station Bill") shows each crew lifeboat station, their duties during abandonment, basic instructions, and __________. #7 In a typical automatic fire alarm system, which of the listed actions will cause an indication of a fire to be given in the annunciator cabinet? #8 A hand portable CO2 fire extinguisher is effective on burning oil only __________. #9 If a fire broke out in an automation console, you would first secure the power and then proceed to use which of the listed hand portable fire extinguishers? #10 A squeeze-grip type carbon dioxide portable fire extinguisher has been partially discharged. It should be __________. #11 Which of the listed methods is the most effective to fight a fire on the open deck of a vessel if using a dry chemical type fire extinguisher? #12 When fighting a fire with a portable dry chemical extinguisher you should always __________. #13 You are fighting a class "B" fire with a portable dry chemical extinguisher. The discharge should be directed __________. #14 To properly maintain fire hoses, you should __________. #15 There is always a lower water pressure at the fire hose outlet than is found at the discharge of the pump. Which of the following reasons is the common cause of this loss in pressure? #16 Fire hoses located at protected fire stations must always be __________. #17 A low velocity fog applicator is held in an all-purpose nozzle by a bayonet joint. The applicator is prevented from rotating in the joint by __________. #18 An extinguishing agent which effectively cools dilutes combustible vapors and provides a heat and smoke screen is __________. #19 Low velocity water fog is used in firefighting as a __________. #20 When a ship's low-pressure CO2 fixed fire extinguishing system is activated from a remote location, what determines the quantity of CO2 that will be released into the selected compartment? #21 After extinguishing a paint locker fire using the fixed CO2 system, the next immediate action is for the space to be __________. #22 When fighting a machinery space fire, you should operate a fixed CO2 system by opening the control valve to the space protected and __________. #23 Why is it essential to introduce CO2 from a fixed fire extinguishing system, into a large engine room, as quickly as possible? #24 The source of power for the CO2 discharge alarm siren is obtained from __________. #25 The primary function of an automatic sprinkler system is to __________. #26 While fighting a fire, in order to utilize two hoses from a single 'wye' gate attached to a hydrant outlet, you need only turn the valve handle __________. #27 One of the disadvantages of using carbon dioxide to extinguish a fire in an enclosed space is __________. #28 As a firefighting medium, CO2 can be dangerous under certain conditions as it can cause __________. #29 Which extinguishing agent is most likely to allow reflash as a result of not cooling the fuel below its ignition temperature? #30 Dry chemical extinguishing agents extinguish a fire by __________.
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