网友您好, 请在下方输入框内输入要搜索的题目:
题目内容
(请给出正确答案)
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 line
B.The tanks must be protected by overflows
C.The total area of the vents or the overflow shall be at least equal to the area of the fill line
D.There must be twice as much vent area as the area of the fill line
参考答案
更多 “ 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 ” 相关考题
考题
When measuring the oxygen content of the cargo tanks prior to loading cargoes requiring vapor recovery,check it ______.A.one meter from the tank bottom and one meter below the tank topB.one half the ullage of the tank and one meter below the tank topC.one half the ullage of the tank and one meter above the tank bottomD.at three meter intervals from the tank top to the bottom
考题
Which action must be taken when an individual cargo tank is closed off from the inert gas system by the tank isolation valve?A.The tank must be gas freedB.The tank must be ballastedC.The tank must be vented to the atmosphereD.The bypass valve must also be closed
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
You are on a cargo vessel carrying toluol in bulk in portable tanks. Which is a requirement for pumping the toluol?A.Hose connections to the tank must be made with a minimum of three boltsB.There must be water pressure on the fire mainC.You must shut down if another vessel comes alongsideD.If transferring at anchor,you must display a red flag by day and a red light at night
考题
You are loading a cargo tank on your container ship. The tank displays the red label shown. Which statement is TRUE?A.The tank contains propyleneB.The tank's volume is 1077 cubic feetC.There are three tanks in the shipmentD.The tank contains an oxidizing material
考题
A loaded hopper barge with independent tanks has a placard,with alternating red and white quadrants,on each side and end.Which statement concerning this barge is TRUE ________.A.The cargo will spontaneously ignite if released to the atmosphereB.You must operate this barge as a lead bargeC.The barge should be spotted as far away from the towboat as possibleD.The barge must be in a protected position within the tow
考题
Which operation may cause the pressure in an inert tank to fall below the prescribed limits ________.A.LoadingB.DischargingC.Crude oil washingD.Steaming tanks
考题
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
Which statement is TRUE concerning cargo hose on tank barges ________.A.Cargo hose must be able to withstand the shut-off head plus the static head of the cargo pumpB.Cargo hose must be able to withstand the static head of the cargo pump but no less than 100 psiC.Cargo hose must be able to withstand the shut-off head less the static head of the cargo pump but no less than 100 psiD.Cargo hose must be able to withstand at least 150 psi
考题
You are on a tanker designed to carry molten sulfur.Which statement is TRUE ________.A.There must be two portable toxic vapor detectors on boardB.The cargo tank ventilation system must maintain the H2S vapor concentration at 1.85% or more by volumeC.Cargo temperature may be taken by portable thermometersD.The pressure in the heating coils in the tanks must be less than that of the cargo exerted on them
考题
单选题In a commonly used fuel oil system, the oil is stored in tanks in the double bottom from which it is pumped to () and heated.A
a service tankB
a settling tankC
an expansion tankD
a double bottom tank
考题
单选题In a typical fuel oil system, the oil is stored in tanks in the double bottom from which it is pumped to () and heated.A
a service tankB
a collecting tankC
a sumpD
a settling tank
考题
单选题Fuel oil tank vents are fitted with a screen which will stop().A
oil from flowing out of the tank ventB
air from entering the tank ventC
vapors from leaving the tank ventD
flames on deck from entering the tank vent
考题
单选题When measuring the oxygen content of the cargo tanks prior to loading cargoes requiring vapor recovery,check it().A
one meter from the tank bottom and one meter below the tank topB
one half the ullage of the tank and one meter below the tank topC
one half the ullage of the tank and one meter above the tank bottomD
at three meter intervals from the tank top to the bottom
考题
单选题水泥涂料用于淡水舱和双层底舱。()A
Primer is used for sea water tanks and double bottom tanks.B
Cement wash is used for fresh water tanks and double bottom tanks.C
Varnish is used for fresh water tanks and double bottom tanks.D
Bitumen is used for fresh water tanks and double bottom tanks.
考题
单选题You are on a cargo vessel carrying toluol in bulk in portable tanks. Which is a requirement for pumping the toluol? ()A
Hose connections to the tank must be made with a minimum of three boltsB
There must be water pressure on the fire mainC
You must shut down if another vessel comes alongsideD
If transferring at anchor,you must display a red flag by day and a red light at night
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When checking the oxygen content of the cargo tanks prior to loading cargoes requiring vapor recovery,the atmosphere must be sampled().A
one meter from the tank bottom and one meter below the tank topB
one half the ullage of the tank and one meter below the tank topC
one half the ullage of the tank and one meter above the tank bottomD
at three meter intervals from the tank top
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If emergency welding repairs must be made to the upper area of a fuel tank, the tank and/or adjacent compartments may need to be ()A
gas freedB
inertedC
filled with waterD
all of the above as necessary
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Each drilling unit equipped with helicopter fuel storage tanks must have the tanks installed as far as practicable from the().A
landing area and sources of vapor ignitionB
main deckC
engine roomD
drill floor
考题
单选题Longitudinal and transverse separtions between the tanks,which are used to prevent liquids from leaking from one double bottom tank into the other ,are called().A
double bottomsB
cofferdamC
navigating bridgeD
superstructure
考题
单选题To avoid excessive pressures in the fuel oil filling system during bunkering, you should ().A
close the tank filling valves quicklyB
top off all tanks at the same timeC
rill completely all tanks to less than 95% fullD
reduce the loading rate when topping off
考题
单选题Portable fire extinguishers must be provided for the cargo tank area of an unmanned tank barge().A
only when fully loadedB
if one or more tanks are fullC
when transferring cargoD
only when the barge is being towed
考题
单选题Which operation may cause the pressure in an inert tank to fall below the prescribed limits().A
LoadingB
DischargingC
Crude oil washingD
Steaming tanks
考题
单选题A vessel is equipped with cross-connected deep tanks.In which situation should the crossconnection valve be closed?().A
The tank lie above the waterline and are filledB
The tank are partically filled with dry cargoC
The tanks are partially filled with liquid cargoD
The tanks are filled and lie below the waterline
热门标签
最新试卷