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
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
相关考题：
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.
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
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
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
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
In Cargo Survey，T．C．V．refers to ______．A.total calculated volumeB.terminal cargo volumeC.tank cargo valveD.tolerance of cargo valve
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
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
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
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
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
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
单选题Petroleum cargo tanks should not be topped off at deck level when loading on a cold day because（）.Aa subsequent temperature rise will cause the cargo to overflowBair pockets may cause the cargo to bubble out of the ullage holeCthe increased viscosity of the product requires higher loading pressure which increases the chances of a spillDthe tank valve may be stiff and a spill will occur before the valve can be closed
单选题What is the purpose of pressure-vacuum relief valves? （）ARegulation of discharge pressure from cargo pumpsBMaintaining constant velocity in cargo linesCRegulation of suction head on cargo pumpsDTo maintain a tank or void at atmospheric pressure
单选题Upon the survey it is found the deck control valve of the fore peak tank could not be（）.Atighted formallyBshut tightlyCcombined properlyDclosed suitably
单选题A segregated ballast system is a system where （）Aall ballast is processed through the oily water separatorBballast is taken on and discharged through a separate main deck riserCballast and cargo tanks are separated by cofferdamsDall ballast lines, tanks, and pumps are independent of those used for oil
单选题What is a characteristic of all centrifugal cargo pumps? （）AThey are self-primingBDecreasing the speed of rotation will decrease the discharge pressureCOpening the discharge valve wider will increase the discharge pressureDAll of the above
单选题The term "load on top" is used on many crude oil carriers, is to provide a method for （）.Acalculating the ullage in the cargo tanksBloading ballast by gravityCthe loading of new cargo into the slop tank as a procedure to minimize pollutionDcalculating the ratio of cargo expansion in a cargo tank
单选题What would NOT require that a detailed report of the release of hazardous cargo be made to the Department of Transportation? （）AThe valve on an empty portable tank that contained acetone is accidently opened and some of the residue escapes to the open seaBA carboy of nitric acid is broken on deck while loading and is flushed overboard with no injuryor damageCPart of your deck cargo of five gallon cans of paint is damaged and leaking so you jettison them to eliminate the fire hazardDHeavy weather causes damage to packages of a hazardous liquid that is subsequently pumped out at sea through the bilge pumping system
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（）.Aopen and individual tank valves openBopen and the individual tank valves closedCclosed and the individual tank valves closedDclosed and the individual tank valves open
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?（）AThe tank must be gas freedBThe tank must be ballastedCThe tank must be vented to the atmosphereDThe bypass valve must also be closed
单选题A relief valve for a cargo pump is generally installed（）.Aafter the discharge valveBbetween the pump and discharge valveCafter the suction valveDbetween the pump and suction valve
单选题Inerting means（）.Athe introduction of inert gas into a tank with the object of reducing the oxygen content to below 8% by volumeBthe introduction of inert gas into a gas free tank for the purpose of reducing the oxygen content to below 8% by volumeCthe introduction of inert gas into a cargo tank during cargo discharge to replace the volume of discharged cargoDAll of the above
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（）.Aadd ballast aftBload more cargo aftCshift cargo aftDAll of the above
单选题The valve on the discharge side of a cargo pump on a tanker will usually be a（）.Abutterfly valveBspectacle valveCcheck valveDglobe valve
单选题The combined fan discharge rate in an inert gas system is related to the（）.Ashoreside loading rateBmaximum cargo pump discharge rateCboiler forced draft fan rateDsize of the largest cargo tank
单选题The valve on the discharge side of a cargo pump on a tank vessel will usually be a（）.Abutterfly valveBspectacle valveCcheck valveDglobe valve