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Regulations require that cargo tanks carrying grades D or E liquids on tank barges be vented with ______．
A.Gooseneck vents and flame screens
B.Pressure-vacuum relief valves
C.Branch vent lines and a vent header
D.Forced draft blowers
参考答案
更多 “ Regulations require that cargo tanks carrying grades D or E liquids on tank barges be vented with ______．A.Gooseneck vents and flame screensB.Pressure-vacuum relief valvesC.Branch vent lines and a vent headerD.Forced draft blowers ” 相关考题
考题
An inert gas system installed on a tanker is designed to ______.A.aid in the stripping and cleaning of cargo tanksB.increase the rate of discharge of cargoC.force toxic and explosive fumes from a cargo tank to vent to the outside atmosphereD.lower the oxygen levels inside cargo tanks，making explosion nearly impossible
考题
How does an inert gas system on a tanker function to prevent explosions in cargo tanks?A.De-energizes the "charged mist" effectB.Maintains a positive pressure on the vent header to cool the flammable vaporsC.Inert gas filters out the flammable vapors from the cargo tank spacesD.Inert gas dilutes the flammable vapor and air concentrations to keep them below the lower explosive limit
考题
To determine which grades of cargo a tank vessel is permitted to carry you should ______.A.refer to the vessel's Certificate of InspectionB.examine the cargo tanks and fittingsC.ask the terminal supervisor or his representativeD.check the loading order
考题
You are cleaning the tanks after carrying a cargo of crude oil. Which statement is TRUE?A.Washing water should be recirculated if possible because it has the same electric potential as the cargo tank being cleanedB.The hoses to portable cleaning machines should be disconnected before the machines are removed from the tankC.The principal hazard with steaming cargo tanks is raising the ambient temperature above the flame point of the cargo residueD.Steam cleaning and water washing are both capable of generating electrostatic charges within a tank
考题
Which statement is TRUE concerning protection of double bottom tanks against excessive pressure?A.Each vent for the tank must be equal to the area of the tank filling lineB.The tanks must be protected by overflowsC.The total area of the vents or the overflow shall be at least equal to the area of the fill lineD.There must be twice as much vent area as the area of the fill line
考题
Regulations require that cargo pumps in tankers carrying grade D liquid cargo shall be isolated from sources of vapor ignition by ______．A.CofferdamsB.Gastight bulkheadsC.Passageways or living quartersD.General cargo spaces
考题
Regulations require that cargo tanks in which grades B or C liquids are carried must be vented with which of the following ________．A.Gooseneck ventsB.Flame screensC.Pressure vacuum relief valvesD.Forced draft blowers
考题
Which spaces are required to be segregated from cargo tanks carrying grades A，B，C，or D cargoes ________．A.Pump roomsB.Enclosed deck spacesC.CofferdamsD.Navigation spaces
考题
单选题How does an inert gas system on a tanker function to prevent explosions in cargo tanks? （）A
De-energizes the charged mist effectB
Maintains a positive pressure on the vent header to cool the flammable vaporsC
Inert gas filters out the flammable vapors from the cargo tank spacesD
Inert gas dilutes the flammable vapor and air concentrations to keep them below the lower explosive limit
考题
单选题Regulations require that cargo pumprooms on tank barges (constructed in 1965) carrying grades B or C liquid cargoes have power ventilation systems which can completely change the air in （）.A
1 minuteB
3 minutesC
5 minutesD
10 minutes
考题
单选题Regulations require that tankers handling grade B liquids shall have their cargo pumps separated from all sources of vapor ignition by（）.A
cofferdamsB
empty cargo spacesC
gas tight bulkheadsD
areas equipped with power ventilation
考题
单选题You are cleaning the tanks after carrying a cargo of crude oil. Which statement is TRUE? （）A
Washing water should be recirculated if possible because it has the same electric potential as the cargo tank being cleanedB
The hoses to portable cleaning machines should be disconnected before the machines are removed from the tankC
The principal hazard with steaming cargo tanks is raising the ambient temperature above the flame point of the cargo residueD
Steam cleaning and water washing are both capable of generating electrostatic charges within a tank
考题
单选题To determine which grades of cargo a tank vessel is permitted to carry you should（）.A
refer to the vessel's Certificate of InspectionB
examine the cargo tanks and fittingsC
ask the terminal supervisor or his representativeD
check the loading order
考题
单选题Access to a cargo pumproom on a tank vessel carrying grades A，B，C or D liquid cargoes shall be（）.A
at least 13.1 feet away from the galleys，living quarters or navigation spacesB
from the open deckC
only from areas equipped with power ventilation systemsD
isolated from any part of the vessel which normally contains sources of vapor ignition
考题
单选题According to regulations，access to a cargo pumproom in a tanker carrying grades C or D liquid cargo shall be（）.A
from areas equipped with power ventilationB
only from enclosed areas free from sources of vapor ignitionC
from the open deckD
from within the vessel
考题
单选题The system of valves and cargo lines in the bottom piping network of a tank vessel that connects one section of cargo tanks to another section is called a（）.A
crossoverB
runaroundC
come-alongD
manifold
考题
单选题Regulations require that pumprooms on tank vessels carrying grade C liquid cargo with machinery spaces below the freeboard deck be ventilated with（）.A
power ventilationB
gooseneck vents and flame screensC
at least two ducts extending to the weather deckD
a vent header system
考题
单选题Regulations require that cargo pumps in tankers carrying grade D liquid cargo shall be isolatedfrom sources of vapor ignition by（）.A
cofferdamsB
gastight bulkheadsC
passageways or living quartersD
general cargo spaces
考题
单选题Regulations require that cargo tanks carrying grades D or E liquids on tank barges be vented with（）.A
gooseneck vents and flame screensB
pressure-vacuum relief valvesC
branch vent lines and a vent headerD
forced draft blowers
考题
单选题Regulations require that access to a cargo pumproom in a tanker carrying grade D liquid cargo，shall be（）.A
away from galleys，living quarters，or navigation spacesB
only from areas equipped with power ventilation systemsC
from the open deckD
isolated from sources of vapor ignition
考题
单选题In setting the valves on a steam-smothering system on a tank vessel，the master control valve to cargo tanks should be（）.A
open and individual tank valves openB
open and the individual tank valves closedC
closed and the individual tank valves closedD
closed and the individual tank valves open
考题
单选题According to regulations，access to a cargo pumproom in a tank vessel carrying grades C or D liquid cargo shall be（）.A
from areas equipped with power ventilationB
only from enclosed areas free from sources of vapor ignitionC
from the open deckD
from within the vessel
考题
单选题An inert gas system installed on a tanker is designed to（）.A
aid in the stripping and cleaning of cargo tanksB
increase the rate of discharge of cargoC
force toxic and explosive fumes from a cargo tank to vent to the outside atmosphereD
lower the oxygen levels inside cargo tanks，making explosion nearly impossible
考题
单选题Which statement is TRUE concerning protection of double bottom tanks against excessive pressure? （）A
Each vent for the tank must be equal to the area of the tank filling lineB
The tanks must be protected by overflowsC
The total area of the vents or the overflow shall be at least equal to the area of the fill lineD
There must be twice as much vent area as the area of the fill line
考题
单选题The greatest effect on stability occurs from loose liquids flowing（）.A
from side to side in the tanks of the vesselB
from fore to aft in the tanks of a vesselC
in and out of a vessel that is holed in a wing tankD
in and out of a vessel that is holed in a peak tank
考题
单选题On a vessel carrying grades A，B，C or D cargoes，enclosed spaces where sources of vapor ignition are normally present shall NOT be segregated from cargo tanks by（）.A
cofferdamsB
galleysC
pump roomsD
tanks used to carry liquids having a flash point of 150°F or above
考题
单选题Regulations require that tank vessels handling grade B liquids shall have their cargo pumps separated from all sources of vapor ignition by（）.A
cofferdamsB
empty cargo spacesC
gas tight bulkheadsD
areas equipped with power ventilation
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