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Before discharge of cargo tank ballast is undertaken，______．
A.the deck isolating valve is open
B.flue gas isolating valve
C.blower suction valve
D.blower discharge valve
参考答案
更多 “ Before discharge of cargo tank ballast is undertaken，______．A.the deck isolating valve is openB.flue gas isolating valveC.blower suction valveD.blower discharge valve ” 相关考题
考题
What would NOT require that a detailed report of the release of hazardous cargo be made to the Department of Transportation?A.The valve on an empty portable tank that contained acetone is accidently opened and some of the residue escapes to the open seaB.A carboy of nitric acid is broken on deck while loading and is flushed overboard with no injury or damageC.Part of your deck cargo of five gallon cans of paint is damaged and leaking so you jettison them to eliminate the fire hazardD.Heavy weather causes damage to packages of a hazardous liquid that is subsequently pumped out at sea through the bilge pumping system.
考题
The valve on the discharge side of a cargo pump on a tank vessel will usually be a ______.A.butterfly valveB.spectacle valveC.check valveD.globe valve
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
Which statement is TRUE concerning the tandem working arrangement of pedestal cranes when completing a quad lift?A.The discharge is slow due to the size of the cargo and all the cranes working togetherB.The cargo discharge can be accomplished with controlled pendulationC.The cargo discharge can be performed in port or at anchorD.The cranes enable the handling of heavy cargos without shoreside assistance
考题
You are on a multiple product tanker and carrying methyl acrylate，diethanolamine，and triethylamine. Which statement is TRUE?A.Methyl acrylate may be loaded in a tank adjacent to diethanolamine but not triethylamineB.The heating coils to the cargo tank loaded with methyl acrylate must be blanked offC.Valve components made of aluminum，copper，or zinc may not be in contact with the cargoesD.Each crew member working on deck must have an emergency escape breathing apparatus
考题
In Cargo Survey，T．C．V．refers to ______．A.total calculated volumeB.terminal cargo volumeC.tank cargo valveD.tolerance of cargo valve
考题
Inerting means ______．A.The introduction of inert gas into a tank with the object of reducing the oxygen content to below 8% by volumeB.The introduction of inert gas into a gas free tank for the purpose of reducing the oxygen content to below 8% by volumeC.The introduction of inert gas into a cargo tank during cargo discharge to replace the volume of discharged cargoD.All of the above
考题
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 ______．A.Suction endB.StrainerC.Bell-mouthD.Vacuum valve
考题
The discharge into sea of substances in Category A as defined or of those provisionally assessed as such or ballast water，tank washings，or other residues or mixtures containing such substances shall be ______．A.MotivatedB.InnovatedC.ProhibitedD.Provided
考题
Valves on steam-smothering lines to cargo tanks shall be set with ______．A.The master control valve shut and valves to individual cargo tanks shutB.The master control valve open and valves to individual cargo tanks shutC.The master control valve shut and valves to individual cargo tanks openD.All valves open
考题
When a tank is to be gas freed after washing，the concentration of hydrocarbon vapour should be reduced by purging the inerted cargo tank with ______．A.the oxygenB.the gasC.the inert gasD.the hydrocarbon vapour
考题
You start a centrifugal cargo pump to discharge cargo．The pump works for a while and then loses suction．This could be caused by ______．A.The pump running backwardsB.Incomplete primingC.The discharge head being too highD.All of the above
考题
单选题Petroleum cargo tanks should not be topped off at deck level when loading on a cold day because（）.A
a subsequent temperature rise will cause the cargo to overflowB
air pockets may cause the cargo to bubble out of the ullage holeC
the increased viscosity of the product requires higher loading pressure which increases the chances of a spillD
the tank valve may be stiff and a spill will occur before the valve can be closed
考题
单选题What is the purpose of pressure-vacuum relief valves? （）A
Regulation of discharge pressure from cargo pumpsB
Maintaining constant velocity in cargo linesC
Regulation of suction head on cargo pumpsD
To maintain a tank or void at atmospheric pressure
考题
单选题Upon the survey it is found the deck control valve of the fore peak tank could not be（）.A
tighted formallyB
shut tightlyC
combined properlyD
closed suitably
考题
单选题A segregated ballast system is a system where （）A
all ballast is processed through the oily water separatorB
ballast is taken on and discharged through a separate main deck riserC
ballast and cargo tanks are separated by cofferdamsD
all ballast lines, tanks, and pumps are independent of those used for oil
考题
单选题What is a characteristic of all centrifugal cargo pumps? （）A
They are self-primingB
Decreasing the speed of rotation will decrease the discharge pressureC
Opening the discharge valve wider will increase the discharge pressureD
All of the above
考题
单选题The term "load on top" is used on many crude oil carriers, is to provide a method for （）.A
calculating the ullage in the cargo tanksB
loading ballast by gravityC
the loading of new cargo into the slop tank as a procedure to minimize pollutionD
calculating the ratio of cargo expansion in a cargo tank
考题
单选题What would NOT require that a detailed report of the release of hazardous cargo be made to the Department of Transportation? （）A
The valve on an empty portable tank that contained acetone is accidently opened and some of the residue escapes to the open seaB
A carboy of nitric acid is broken on deck while loading and is flushed overboard with no injuryor damageC
Part of your deck cargo of five gallon cans of paint is damaged and leaking so you jettison them to eliminate the fire hazardD
Heavy weather causes damage to packages of a hazardous liquid that is subsequently pumped out at sea through the bilge pumping system
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What 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
单选题A relief valve for a cargo pump is generally installed（）.A
after the discharge valveB
between the pump and discharge valveC
after the suction valveD
between the pump and suction valve
考题
单选题Inerting means（）.A
the introduction of inert gas into a tank with the object of reducing the oxygen content to below 8% by volumeB
the introduction of inert gas into a gas free tank for the purpose of reducing the oxygen content to below 8% by volumeC
the introduction of inert gas into a cargo tank during cargo discharge to replace the volume of discharged cargoD
All of the above
考题
单选题Your tank vessel is fully loaded, and you find that she is down slightly by the head. To adjust the trim, you may（）.A
add ballast aftB
load more cargo aftC
shift cargo aftD
All of the above
考题
单选题The valve on the discharge side of a cargo pump on a tanker will usually be a（）.A
butterfly valveB
spectacle valveC
check valveD
globe valve
考题
单选题The combined fan discharge rate in an inert gas system is related to the（）.A
shoreside loading rateB
maximum cargo pump discharge rateC
boiler forced draft fan rateD
size of the largest cargo tank
考题
单选题The valve on the discharge side of a cargo pump on a tank vessel will usually be a（）.A
butterfly valveB
spectacle valveC
check valveD
globe valve
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