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

USCG Safety & Environmental Protection (Deck) (Set 22)

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Question 1 of 30

Which danger exists to people when CO2 is discharged into a small enclosed space?

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30 MCQs

#1 Which danger exists to people when CO2 is discharged into a small enclosed space? #2 Which statement concerning carbon dioxide is FALSE? #3 While you are working in a space, the fixed CO2 system is accidentally activated. You should __________. #4 The safety discs on carbon dioxide cylinders are set to release at 2,700 psi. Under normal circumstances this pressure will be reached at a temperature of __________. #5 CO2 cylinders equipped with pressure actuated discharge heads will discharge automatically when __________. #6 Spaces protected by a fixed CO2 system must be equipped with an alarm which sounds __________. #7 A safety outlet is provided on the CO2 discharge piping to prevent __________. #8 Before using a fixed CO2 system to fight an engine room fire, you must __________. #9 The gross weight of a fully charged CO2 bottle in a fixed CO2 system is 220 lbs. When the bottle is empty it weighs 120 lbs. What is the minimum acceptable gross weight of the CO2 bottle before it should be recharged by the manufacturer? #10 The gross weight of a fully charged CO2 cylinder is 80 lbs. When the bottle is empty it weighs 60 lbs. What is the minimum acceptable gross weight of the CO2 bottle before it should be recharged by the manufacturer? #11 Fixed CO2 systems would not be used on crew's quarters or __________. #12 CO2 cylinders forming part of a fixed fire extinguishing system must be pressure tested at least every __________. #13 Fixed carbon dioxide extinguishing systems, for machinery spaces that are normally manned, are actuated by one control to open the stop valve in the line leading to the space, and __________. #14 In a fixed carbon dioxide extinguishing system for a machinery space, designed WITH a stop valve in the line leading to the protected space, the flow of CO2 is established by actuating __________. #15 Which of the following statements is true concerning the control activators, i.e., pull-handles, push-buttons or levers, for a space protected by a CO2 fixed fire extinguishing system? #16 A fixed carbon dioxide extinguishing system for a machinery space, designed WITHOUT a stop valve in the line leading to the protected space, is actuated by __________. #17 The carbon dioxide cylinders of a fixed fire extinguishing system may be located inside the protected space, if the quantity of CO2 required to protect that space is not more than __________. #18 In a fixed CO2 fire extinguishing system where pressure from pilot cylinders is used to release the CO2 from the main bank of cylinders, the number of required pilot cylinders shall be at least __________. #19 When pilot cylinder pressure is used as a means to release the CO2 from a fixed fire extinguishing system consisting of four storage cylinders, the number of pilot cylinders shall be at least __________. #20 In a fixed CO2 extinguishing system where provision is made for the release of CO2 by operation of a remote control, provision shall also be made for releasing the CO2 __________. #21 Which of the following statements is FALSE, concerning the regulations pertaining to the cylinder room of a fixed CO2 fire extinguishing system? #22 A crew member reports that the high-pressure alarm light of a low-pressure CO2 fixed fire extinguishing system is illuminated. The most probable cause of this condition would be that __________. #23 What would be a major consequence of the refrigeration system for a low-pressure CO2 fixed fire extinguishing system remaining inoperable? #24 When a ship's low-pressure CO2 fixed fire extinguishing system is activated from a remote location, what determines the quantity of CO2 being released into a selected space? #25 The normal designed CO2 storage tank temperature and pressure associated with a ship's low-pressure CO2 fixed fire extinguishing system is approximately __________. #26 Actuating the CO2 fixed system causes the shutdown of the __________. #27 The space containing carbon dioxide cylinders shall be properly ventilated and designed to prevent an ambient temperature in excess of __________. #28 As an extinguishing agent, foam __________. #29 Why should foam be banked off a bulkhead when extinguishing an oil fire? #30 Which statement is TRUE concerning the application of foam on an oil fire?

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