Tankers Full Question Bank
A single fitting installed in a pipeline that either blanks off the pipe or allows a full flow passage of a liquid through the pipe is referred to as a __________. A. spectacle flange B. pivot coupling C. quick-release coupling D. blind flange
A
A relief valve for a cargo pump is generally installed __________. A. between the pump and discharge valve B. between the pump and suction valve C. after the suction valve D. after the discharge valve
A
What is NOT a precaution to be taken when topping off? A. Notify the engine room of the procedure. B. Reduce the loading rate. C. Give the operation your undivided attention. D. Maintain communications with the dock man
A
What is meant by "thieving" a petroleum cargo? A. Determining the amount of water (if any) in each cargo tank. B. Reducing the gross cargo calculations to net amounts. C. Adjusting the cargo figures to coincide with the draft. D. Siphoning off a few barrels of petroleum for shipboard use.
A
What is the lowest temperature at which a liquid gives off sufficient vapors to form a flammable mixture with air in the presence of an ignition source? A. Flash point B. Flammable range C. Reid vapor index D. Autoignition temperature
A
What is the lowest temperature at which the vapors of a flammable liquid will ignite and cause self-sustained combustion in the presence of a spark or flame? A. fire point B. flash point C. vaporization temperature D. autoignition temperature
A
What is the minimum temperature required to ignite gas or vapor without a spark or flame being present called? A. flash point B. autoignition temperature C. lower explosive limit D. fire point
A
What type of valve is usually on the discharge side of a cargo pump on a tank vessel? A. check valve B. spectacle valve C. globe valve D. butterfly valve
A
When bunkering at anchorage which of the following signals must be displayed? A. A red flag by day, red light by night B. A red light by night ONLY C. A red flag by day ONLY D. No signal required at anchorage
A
When discharging a tanker, how can list be controlled? A. by using wing tanks near the longitudinal center, discharging as necessary B. by shoreside personnel C. by using a center tank near the bow, discharging as necessary D. by using the after peak tank, loading as necessary
A
When discharging an oil cargo, the first consideration is to __________. A. get the bow up B. discharge from the centerline tanks first C. discharge from the wings first D. discharge from amidships first
A
When selecting the fuel oil tanks for the "burn-out" of bunkers during a voyage consideration of all of the following must be taken with the EXCEPTION of __________. A. flashpoint B. list C. stability D. trim
A
Which factor must be considered when determining the order of loading of dissimilar products through the same piping system aboard a tanker? A. Contamination of the cargo B. Flash points C. Specific gravities D. Reid vapor pressures
A
Which of the following actions is not considered to have the potential for generating static electricity? A. discharging a fire hose on deck B. settling of solids or water in petroleum C. spraying or splashing of petroleum D. flow of petroleum through pipes
A
Which of the following best describes the heat value of a fuel? A. the amount of heat released when a fuel is burned B. the cost per BTU of a fuel C. the temperature to which a fuel must be raised to cause ignition D. the amount of fuel added to a fuel to cause it to burn
A
Which of the following describes the relationship between the vapor pressure of a substance and temperature? A. increases with the temperature B. decreases as temperature increases C. is not affected by temperature D. may increase or decrease as the temperature rises
A
Which of the following is the pipe used to connect two separate piping systems on a tank vessel? A. crossover B. transfer C. connection D. junction
A
Which of the signals listed is required to be displayed during the day while bunkering? A. A red flag B. A red and yellow flag C. A yellow flag D. A red light
A
Which product is most likely to accumulate static electricity? A. Lubricating oil B. Hard asphalt C. Crude oil D. Residual fuel oil
A
Which statement about a centrifugal cargo pump is TRUE? A. It must have a positive suction. B. It is a positive displacement pump. C. Increasing rotation speed will decrease discharge pressure. D. All of the above
A
Which statement is TRUE of centrifugal pumps aboard tankers? A. They are more expensive than reciprocating pumps. B. They are gravity-fed. C. They are used for stripping pumps. D. They are used for stripping pumps.
B
Which tanker discharge pattern would be the safest and most efficient? A. Empty the forward tanks and start working aft, emptying each tank in sequence B. Start discharging with most of the discharge coming from forward, but include some from midships and after tanks C. Start pumping from midships and then work forward and aft simultaneously as the midships tank is emptied D. Start pumping from forward, midships, and aft with the discharge distributed equally among the tanks
B
With an increase in temperature the volume of flammable and combustible liquids __________. A. remains constant if pressure remains constant B. expands C. contracts D. remains constant
B
You are on a tankship discharging oil. When all of the oil that the main cargo pumps can handle is pumped out of a tank, the remainder is __________. A. gravitated to the centers from the wings and pumped out with the main pumps B. stripped out and pumped directly ashore into the mainline as the remaining cargo tanks are pumped out with the main pumps C. stripped to one tank and then pumped out with the main pumps D. stripped out and pumped directly ashore after all the tanks have been emptied by the main pumps
B
It would be prudent to perform which of the following actions prior to the commencement of bunkering? A. plug the sounding pipes B. close the lids on the vents C. plug the vents D. plug the scuppers
D
On tankers with manually operated tank valves, which of the following is the type of valve most commonly used? A. gate valve B. globe valve C. check valve D. butterfly valve
D
Which of the following is equivalent to a "barrel", which is a unit of liquid measure? A. 40 U.S. gallons at 50° F B. 45 U.S. gallons at 75° F C. 43 U.S. gallons at 65° F D. 42 U.S. gallons at 60° F
D
Which of the following statements concerning deep well cargo pumps is correct? A. The impeller is located at the upper end of the shaft. B. Special priming provisions are necessary. C. The prime mover is connected at the lower portion of the shaft. D. A pump room is not necessary.
D
Which of the following terms best defines the spontaneous mixing of a tank's liquid contents when a heavier layer forms above a less dense lower layer? A. flash over B. boil off C. cascading D. rollover
D
Which of the following terms best describes the amount of product in a tank measured from the tank top to the level of liquid? A. Innage B. Thievage C. Outage D. Ullage
D
Which refers to the depth of a petroleum product in a tank? A. Ullage B. Thievage C. Outage D. Innage
D
Which statement is TRUE concerning deep well self-priming pumps? A. In recent years deep well pumps have become increasingly unpopular in product tankers and medium size crude ships. B. When loading oil cargo, it is always loaded via the discharge line through to the pump until the tank is topped off. C. There is no danger of damaging the pump from overheating. D. Stripping systems are generally eliminated for the purposes of cargo handling.
D
Which statement is TRUE of centrifugal pumps aboard tankers? A. They require extensive maintenance. B. They are used for stripping pumps. C. They are more expensive than reciprocating pumps. D. They are gravity-fed.
D
Which step is NOT generally taken when gas-freeing a tank? A. Removal of corrosion products and sludge B. Fresh air ventilation C. Washing the tank interior with sea water D. Application of degreasing solvents
D
46 CFR directs the location of fuel oil sounding tubes and access openings for fuel oil tanks on cargo vessels. Where can the tubes be located? A. Cargo holds B. Laundries C. Crew lounge D. Washrooms
A
A precaution you should take before bunkering is to __________. A. plug the scuppers B. close the lids on the vents C. plug the vents D. plug the sounding pipes
A
A vessel loads edible oil in a deep tank through a manhole at the mid-length of the tank. In order to fill the tank to maximum capacity, what trim should the vessel have? A. In level trim B. Down by either the bow or stern C. Down by the stern D. Down by the bow
A
Fire protection and manning regulations for towing vessels state that the Master or person in charge must ensure that all crew members who have not participated in the drills or received the safety orientation __________. A. receive a safety orientation within 24 hours of reporting for duty B. view a videotape on safety procedures within 48 hours of reporting for duty C. receive a safety orientation or view a videotape before the vessel gets underway D. none of the above
A
How should pinching of the cargo hose between the vessel and the dock be prevented? A. adjusting the hose supports B. laying out an excess length of hose on deck C. tying off the topping lifts and runners to winch heads D. install hose preventers
A
In order to reduce the accumulation of static electricity while loading petroleum products, you should __________. A. start to load slowly B. start to load at maximum pressure C. increase the air flow into the tank D. use the overall method of loading only
A
Line Displacement" is a procedure that is followed at an oil terminal facility, when there is a change of which of the following? A. product during the final phase of loading B. product before the start of loading C. cargo lines at the terminal before loading D. product after the final discharge
A
On many modern tankers, which of the following devices is used to reduce cargo pump leakage to the pump room bilge? A. Mechanical seals B. Shaft sleeves C. Clipper seals D. Flinger rings
A
On tankers ullages are measured from what point? A. an above-deck datum such as the top of the ullage pipe B. the tank ceiling aboard transversely framed vessels C. the tank top D. Fire point
A
On tankers ullages are measured from what point? A. an above-deck datum such as the top of the ullage pipe B. the tank ceiling aboard transversely framed vessels C. the tank top D. a thievage mark below the edge of the deck
A
On tankers using manually operated tank valves, what does the deck hand wheel indicator register? A. approximate number of turns the tank valve has been opened B. exact lift position of the tank valve disk, through 100% of its operation C. oxygen content of the tank D. level of oil in the tank
A
Pinching of the cargo hose between the vessel and the dock should be prevented by __________. A. adjusting the hose supports B. tying off the topping lifts and runners to winch heads C. laying out an excess length of hose on deck D. All of the above
A
Tankers that are in service carrying "sour crudes" are faced with additional problems for their safe operation. One such problem is called "polyphoric oxidation" what does this result in? A. particles of rust in the tanks reaching a high temperature during "gas free" operations. B. a lighter grade of crude being needed for tank washing. C. additional time for tank cleaning. D. a second scrubber, known as an alkaline scrubber, to be added in series to the "normal" scrubber.
A
The most likely time for oil pollution while bunkering is when __________. A. final topping off is occurring B. hoses are being blown down C. first starting to receive fuel D. hoses are disconnected and being capped
A
The pipe used to connect two separate piping systems on a tank vessel is known as a __________. A. crossover B. transfer C. connection D. junction
A
The scuppers had been plugged as required at the time an oil spill occurs on deck. After shutting down the transfer, the engine room should first be informed and then __________. A. spread an absorbent material, such as sawdust B. sound the general alarm C. rig a fire hose and call for water on deck D. remove the plugs from the scuppers
A
The terminal indicates to you that they are going to use a booster pump to assist the discharging operation. You start the discharge, and in a few minutes the pressure drops sharply. This could be a result of which of the following? A. booster pump coming on the line and discharging properly B. booster pump failing to start C. booster pump being lined up in the wrong direction D. ships pump speeding up
A
To insure proper seating when closing a valve on a tank, the valve should be __________. A. closed, opened a half turn, and then closed again B. closed against the stop and the locking pin inserted C. set up tight using a valve wrench D. set up as tight as possible by hand
A
To insure proper seating when closing a valve on a tank, what position should the valve be in? A. closed, opened a half turn, and then closed again B. set up as tight as possible by hand C. closed against the stop and the locking pin inserted D. set up tight using a valve wrench
A
U.S. regulations define several acceptable means of closure for ballast and fuel oil tank vents. Which of the following is an example of acceptable means? A. manually operated ball check valve B. automatically operated hinged closure C. permanently installed canvas hood D. corrosion resistant wire screen
A
What are flame screens used for? A. prevent flames from entering tanks B. protect firefighters from flames C. keep flames and sparks from getting out of an engines exhaust system D. contain flammable fumes
A
What is NOT a precaution to be taken when topping off? A. Notify the engine room of the procedure. B. Maintain communications with the dock man. C. Reduce the loading rate. D. Give the operation your undivided attention
A
Which statement is FALSE concerning precautions during fueling operations? A. Fuel tanks should be topped off with no room for expansion. B. All windows, doors, hatches, etc. should be closed. C. A fire extinguisher should be kept nearby. D. All engines, motors, fans, etc. should be shut down when fueling.
A
Which statement is TRUE concerning insulating flanges? A. They should be inspected and tested periodically to ensure that the insulation is clean and in good condition. B. After the insulating flange is installed, hot work may be performed on deck. C. Switching off a cathodic protection system may be substituted for using an insulating flange D. The measured resistance value after installation should be less than 1,000 ohms.
A
Which statement is TRUE of centrifugal pumps aboard tank vessels? A. They are gravity-fed. B. They are positive displacement pumps. C. They produce a pulsating flow. D. They require more maintenance than a reciprocating pump
A
Which step is NOT generally taken when gas-freeing a tank? A. Application of degreasing solvents B. Removal of corrosion products and sludge C. Fresh air ventilation D. Washing the tank interior with sea water
A
Who must supervise functions aboard a tanker or tank barge such as connecting, disconnecting, and topping off? A. the person designated as "person in charge" B. any certificated tankerman C. the Master of the vessel D. the officer of the watch
A
You start a centrifugal cargo pump to discharge cargo. The pump works fine for awhile and then loses suction. What could have caused this? A. incomplete priming B. the pump running backwards C. the discharge head being too high D. head pressure on the suction side of the pump
A
Your tank vessel is loaded down to her marks, and you find that she has too much trim by the stern. To adjust the trim you may __________. A. shift bunkers forward B. load more cargo forward C. add ballast forward D. All of the above
A
Your vessel is taking on cargo oil when a small leak develops in the hose. You order the pumping stopped. Before you resume pumping, you should __________. A. replace the hose B. place a large drip pan under the leak and plug the scuppers C. repair the hose with a patch D. notify the terminal superintendent
A
In order to reduce the accumulation of static electricity while loading petroleum products, you should __________. A. use the overall method of loading only B. start to load slowly C. increase the air flow into the tank D. start to load at maximum pressure
B
Petroleum cargo tanks should not be topped off at deck level when loading on a cold day due to which of the following? A. air pockets may cause the cargo to bubble out of the ullage hole B. a subsequent temperature rise will cause the cargo to overflow C. the increased viscosity of the product requires higher loading pressure which increases the chances of a spill D. the tank valve may be stiff and a spill will occur before the valve can be closed
B
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. vacuum valve B. bell-mouth C. strainer D. suction end
B
The flame screens installed on tank vents that may contain combustible gases, are designed to prevent explosions by which of the following? A. allowing the escape of flammable vapors B. dissipating the heat of an external flame C. preventing flammable vapors from entering the tank D. absorbing any flammable vapors in the vicinity
B
The piping that routes an oil cargo from the manifold directly to a cargo tank and serves only one tank is known as a __________. A. filler line B. tank drop C. branch line D. cargo fill
B
The term "load on top" is used on many crude oil carriers, what is this a method for? A. calculating the ullage in the cargo tanks B. the loading of new cargo into a decanted slop tank as a procedure to minimize pollution C. calculating the ratio of cargo expansion in a cargo tank D. loading ballast by gravity
B
The valve on the discharge side of a cargo pump on a tank vessel will usually be a __________. A. butterfly valve B. check valve C. globe valve D. gate valve
B
To allow for the rise or fall in tide and for change in draft of a tankship during cargo transfer, cargo hoses must be suspended with __________. A. topping lifts and runners tied off to winches B. enough slack in their bight C. slings or saddles placed at 25-foot (8 meter) intervals D. All of the above
B
To prevent the overflow of cargo tanks due to expansion, where should you top off? A. to within 1 to 3 inches of its capacity B. to within 1% to 3% of its capacity C. to the bottom of the expansion trunk D. 1 to 3 inches from top of the vent pipe
B
Ullage measurements are taken from the top of the liquid to which of the following points? A. the base of the expansion trunk B. an above-deck datum, usually the top of the ullage hole C. the base of the ullage port D. a line scribed within the ullage port
B
What does the MARPOL 73/78 convention deal with? A. International Marine Organization Gas Carrier Code B. International Convention for the Prevention of Pollution from Ships C. International Convention of Safety of Life at Sea D. International Convention on Standards of Training Certification and Watchkeeping
B
What is LEAST likely to be used to strip a cargo tank? A. Rotary pump B. Centrifugal pump C. Eductor D. Reciprocating pump
B
What is NOT an advantage of centrifugal pumps over reciprocating pumps? A. They pump more cargo in less time. B. They require priming for stripping. C. They are smaller for equivalent pumping ability. D. They are less expensive
B
What is Reid Vapor Pressure? A. exerted by liquid cargo on the sides of a tank B. a measurement of the amount of flammable vapors given off by a liquid at a certain temperature C. exerted by liquid cargo on a cargo hose body D. the lowest temperature and pressure that will cause a flammable liquid to give off vapors
B
What is a characteristic of all centrifugal cargo pumps? A. They are self-priming. B. Decreasing the speed of rotation will decrease the discharge pressure. C. Opening the discharge valve wider will increase the discharge pressure. D. All of the above
B
What is a single fitting installed in a pipeline that either blanks off the pipe or allows a full flow passage of a liquid through the pipe? A. pivot coupling B. spectacle flange C. blind flange D. quick-release coupling
B
What is meant by "thieving" a petroleum cargo? A. Reducing the gross cargo calculations to net amounts B. Determining the amount of water (if any) in each cargo tank C. Adjusting the cargo figures to coincide with the draft D. Siphoning off a few barrels of petroleum for shipboard use
B
What is the distance between the surface of the liquid and the tank top in a cargo tank called? A. innage B. ullage C. thievage D. tankage
B
What is the purpose of pressure-vacuum relief valves? A. Maintaining constant velocity in cargo lines B. Automatic regulation of pressure or vacuum in enclosed spaces. C. Regulation of suction head on cargo pumps D. Regulation of discharge pressure from cargo pumps
B
What is the purpose of the relief valve of a cargo pump? A. Allows two or more tanks to be filled at the same time B. Permits the return of cargo to the suction side of the pump C. Provides for the emergency shutdown of the pump D. Provides for the removal of vapors
B
What should you do in order to reduce the accumulation of static electricity while loading petroleum products? A. start to load at maximum pressure B. start to load slowly C. increase the air flow into the tank D. use the overall method of loading only
B
What should you use when hooking up a cargo hose to your vessel manifold? A. self-contained breathing apparatus B. insulating flange or single length of non-conducting hose C. international shore connection D. oxygen analyzer
B
When bunkering at a dock which of the following signals must be displayed? A. A yellow flag by day, red light by night B. A red flag by day, red light by night C. A green flag by day, green light by night D. A red flag by day, a blue light by night
B
When carrying a cargo of asphalt or molten sulfur, which are carried at temperatures of over 300° F, one of the biggest dangers is __________. A. explosion of vapors after discharge B. water in the tanks or pipelines C. having the cargo too cool D. inadequate ullage space
B
When loading a petroleum cargo which is below average ambient temperatures, You must do which of the following? A. verify the vents are sealed B. verify there is room for expansion C. verify vapor baffles are installed D. all of the above
B
When loading a tanker, you should do which of the following? A. load only one tank at a time B. close valves by closing them down, reopening one or two turns, and re-closing C. keep a strain on the loading hoses D. keep the seamen on watch on standby in the mess room
B
When loading bulk liquid cargo, what is the FIRST action you should take if a cargo valve jammed open? A. Run out the vessel or terminal fire hose. B. Order the dock man to shut down. C. Call the owner, operator, or terminal supervisor. D. Trip the pump relief valve.
B
When stripping a tank, excessive air in the suction line may cause __________. A. an over pressurized line B. loss of suction C. increase of suction D. back pressure
B
Which of the following describes the depth of a product in a tank? A. Ullage B. Innage C. Outage D. Thievage
B
Which of the following describes the fresh air intake of the inert gas system? A. it opens when there is excessive vacuum on the deck water seal B. it allows the inert gas piping to be used for gas freeing the tanks C. it prevents the flue gas from falling below an oxygen content of 3% D. it enables outside air to mix with and to cool the hot flue gases
B
Which of the following procedures would insure proper seating of the valve when closing? A. set up tight using a valve wrench B. closed, opened a half turn, and then closed again C. closed against the stop and the locking pin inserted D. set up as tight as possible by hand
B
Your vessel is taking on cargo oil when a small leak develops in the hose. You order the pumping stopped. Before you resume pumping, which of the following action should you perform? A. place a large drip pan under the leak and plug the scuppers B. replace the hose C. notify the terminal superintendent D. repair the hose with a patch
B
Your vessel is taking on cargo oil when a small leak develops in the hose. You order the pumping stopped. What action should you take before you resume pumping? A. repair the hose with a patch B. replace the hose C. place a large drip pan under the leak and plug the scuppers D. notify the terminal superintendent
B
When stripping a tank, what is caused by excessive air in the suction line? A. an over pressurized line B. back pressure C. loss of suction D. increase of suction
C
Where are ullages measured from? A. the thievage mark B. the tank ceiling C. an above deck datum D. the tank top bushing
C
A deepwell pump is a type of __________. A. gear pump B. eductor C. centrifugal pump D. screw pump
C
All of the following steps are taken in starting a centrifugal pump, EXCEPT to __________. A. open the pump suction and discharge valves B. vent the pump casing C. set the relief valve D. check the lubrication system
C
Insulating flanges minimize the dangers arising from which of the following? A. smoking on deck B. tank over-pressurization C. accumulations of electrostatic charges D. loading asphalt
C
Oil product samples should be taken at the commencement and completion of loading operations. As the Person in Charge, where should the final samples be taken? A. the vessel's cargo tanks B. the dock riser C. the shore tank discharge D. the shore line low points
C
On modern tankers with separate pump rooms, which of the following is used to minimize cargo pump shaft leakage? A. Stuffing box glands B. Slinger rings C. Mechanical seals D. Shaft sleeves
C
The cargo pump relief valve is usually piped to which of the following components? A. crossover line B. atmosphere through pump vent C. suction side of pump D. cargo pump pressure gauge
C
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. come-along B. runaround C. crossover D. manifold
C
What is NOT a precaution to be taken when topping off? A. Maintain communications with the dock man. B. Reduce the loading rate. C. Notify the engine room of the procedure. D. Give the operation your undivided attention.
C
What is a cofferdam? A. Area the product is loaded into B. Opening in the deck used for cleaning a tank C. Void or empty space separating two tanks D. Tube fitted to an ullage hole
C
What is an advantage of a gate valve over a butterfly valve? A. More compact B. Cheaper C. Less frequent maintenance D. Faster operation
C
What is litmus paste is used to determine? A. the tank datum point B. innage C. thievage D. ullage
C
What is the lowest temperature at which a liquid will give off sufficient vapors to form a flammable mixture with air? A. lower explosive limit B. fire point C. flash point D. threshold limit value
C
What is the maximum allowable oxygen content within the ships cargo tanks, inert gas piping and the vapor recovery system? A. 4% B. 5% C. 8% D. 10%
C
What is the purpose of the relief valve of a cargo pump? A. Allows two or more tanks to be filled at the same time B. Provides for the removal of vapors C. Permits the return of cargo to the suction side of the pump D. Provides for the emergency shutdown of the pump
C
What is the standard unit of liquid volume used in the petroleum industry? A. drum B. gallon C. barrel D. liter
C
What should be the first consideration when discharging an oil cargo? A. discharge from the centerline tanks first B. discharge from amidships first C. get the bow up D. discharge from the wings first
C
What type of valve will usually be on the discharge side of a cargo pump on a tank vessel? A. globe valve B. butterfly valve C. check valve D. gate valve
C
What will NOT increase friction of a liquid flowing in a pipe and cause a loss of suction head? A. Pipeline valves B. Backing rings for pipe welds C. Slowing the pumping rate D. Bends in the piping
C
When bunkering is complete, the hoses should be __________. A. stowed vertically and allowed to drain B. cleaned internally with a degreaser C. drained, blanked off, and stored securely D. washed out with hot soapy water
C
When loading a tanker, you should __________. A. load only one tank at a time B. keep a strain on the loading hoses C. close valves by closing them down, reopening one or two turns, and re-closing D. keep the seamen on watch on standby in the mess room
C
When loading a tanker, you should perform which of the following functions to ensure a safe operation? A. keep the seamen on watch on standby in the mess room B. load only one tank at a time C. close valves by closing them down, reopening one or two turns, and re-closing D. keep a strain on the loading hoses
C
When loading bulk liquid cargo, what is the first action you should take if a cargo valve jammed open? A. Call the owner, operator, or terminal supervisor. B. Unplug the deck scuppers. C. Order the dock man to shut down. D. Run out the vessel or terminal fire hose.
C
When measuring the oxygen content of the cargo tanks prior to loading cargoes requiring vapor recovery, check it __________. A. at three meter intervals from the tank top to the bottom B. one meter from the tank bottom and one meter below the tank top C. one half the ullage of the tank and one meter below the tank top D. one half the ullage of the tank and one meter above the tank bottom
C
Which method should be used to warm up the pump turbines prior to discharge? A. Run the turbine at slow speed with the pump disconnected B. Run the pump at high speed with the discharge valves closed C. Shut the discharge valve and run the pump at slow speed D. Lock the turbine rotor and slowly bleed in steam until operating temperature is reached
C
Which of the following conditions would be hazardous if you were using two centrifugal pumps to discharge a flammable liquid? A. Each pump operating at a different speed and taking suction from a common line. B. Both pumps operating at the same speed and discharging into a common line. C. Each pump operating at a different speed and discharging into a common line. D. Both pumps operating at the same speed taking suction from a common line.
C
Which of the following does not require cargo transfer operations on a tank vessel to be stopped? A. there is a fire on the dock or on a nearby vessel B. there is an electrical storm in the vicinity C. a tug comes alongside while the tanker is loading grade D and E cargoes D. a large, fresh oil spill is discovered immediately adjacent to the side of the tanker
C
Which of the following is a characteristic of Methane gas? A. it is corrosive B. it is volatile C. it is odorless D. it is active
C
Which of the signals listed is required to be displayed at night while bunkering at a dock? A. One red light over a yellow light B. One red light over a white light C. One red light D. Two red lights
C
Which pump must always be primed? A. Reciprocating pump B. Rotary pump C. Centrifugal pump D. All of the above
C
While discharging a tanker, list can be controlled by __________. A. using the after peak tank, loading as necessary B. shoreside personnel C. using wing tanks near the longitudinal center, discharging as necessary D. using a center tank near the bow, discharging as necessary
C
While loading bulk liquid cargo, a tank valve jams open, what is the first action you should take? A. unplug the deck scuppers B. call the chief engineer C. order the shore facility to shut down D. run out the vessels fire hose
C
With reference to Liquefied Gas operations, what does the term "rollover" used to describe? A. custody transfer at the terminal B. vapor pockets forming at the bottom of a half-filled tank C. when two or more stratified layers of different density LNG in the same tank suddenly mix together, causing a rapid increase in boil-off vapors D. moving LNG from one tank to another
C
You are moving a gas free tank barge to dry dock for repairs. The barge must have onboard a valid __________. A. Gas Free Certificate B. Permit to Proceed and Hot Work Permit C. Certificate of Inspection D. All of the above
C
You are on a tankship discharging oil. what happens to the remaining oil when all of the oil that the main cargo pumps can handle is pumped out of a tank? A. the remainder is stripped out and pumped directly ashore after all the tanks have been emptied by the main pumps B. the remainder is stripped out and pumped directly ashore into the mainline as the remaining cargo tanks are pumped out with the main pumps C. the remainder is stripped to one tank and then pumped out with the main pumps D. the remainder is gravitated to the centers from the wings and pumped out with the main pumps
C
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 backwards B. the discharge head being too high C. incomplete priming D. All of the above
C
Your tank vessel is fully loaded to the marks, and you find that she is down slightly by the head. Which of the following choices would be the best action to take to trim the vessel slightly by the stern? A. load more cargo aft B. add ballast aft C. shift cargo aft D. shift ballast from the aft to forward
C
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 aft B. load more cargo aft C. shift cargo aft D. All of the above
C
Your tank vessel is loaded down to her marks, and you find that she has too much trim by the stern. Which of the following action would reduce the excessive trim? A. add ballast forward B. load more cargo forward C. shift bunkers forward D. discharge cargo from the after tanks
C
A vessel loads edible oil in a deep tank through a manhole at the mid-length of the tank. In order to fill the tank to maximum capacity, what trim should the vessel have? A. Down by the stern B. Down by either the bow or stern C. Down by the bow D. In level trim
D
Cargo pump relief valves are piped to the __________. A. crossover lines interconnecting two pumps B. cargo pump pressure gauges C. atmosphere through pump vents D. suction side of pumps
D
Centrifugal pumps have what advantage(s) over reciprocating pumps? A. They pump more cargo in less time. B. They are less expensive. C. They are smaller for equivalent pumping ability. D. All of the above
D
If two centrifugal pumps, driven by two independent electric motors, operating at unequal speeds are discharging an inflammable liquid through a common discharge line, the higher speed pump may cause the slower pump to do which of the following? A. turn backward B. overspeed the driving end C. stop D. overheat
D
If you are bunkering and you close off one tank in the line of tanks being filled, the rate of flow to other open tanks on the same line will __________. A. remain constant B. decrease C. stop D. increase
D
Petroleum cargo tanks should not be topped off at deck level when loading on a cold day because __________. A. air pockets may cause the cargo to bubble out of the ullage hole B. the tank valve may be stiff and a spill will occur before the valve can be closed C. the increased viscosity of the product requires higher loading pressure which increases the chances of a spill D. a subsequent temperature rise will cause the cargo to overflow
D
Sounding tubes and access openings for fuel oil tanks on cargo vessels are permitted by U.S. regulations to be located in which of the listed spaces? A. Laundries B. crew lounge C. Washrooms D. none of the above
D
Static electricity may be built up by the __________. A. settling of solids or water in petroleum B. flow of petroleum through pipes C. spraying or splashing of petroleum D. All of the above
D
The flame screens installed on tank vents that may contain combustible gases, are designed to prevent explosions by which of the following? A. absorbing any flammable vapors in the vicinity B. allowing the escape of flammable vapors C. preventing flammable vapors from entering the tank D. dissipating the heat of an external flame
D
The main function of a stripping system is to __________. A. increase the loading rate of the shoreside pumps B. maintain the temperature of the cargo throughout the vessel C. dispose of dangerous vapors within the cargo tanks D. discharge liquid left in the cargo tanks after the main pumps have discharged the bulk
D
The main underdeck pipeline on a tankship is connected to individual tanks by __________. A. tank drops B. line drops C. crossovers D. branch lines
D
The piping that routes an oil cargo from the manifold to underdeck pipelines is known as a __________. A. transfer B. cargo fill C. branch line D. line drop
D
The terminal indicates to you that they are going to use a booster pump to assist the discharging operation. You start the discharge, and in a few minutes the pressure drops sharply. This could be a result of the __________. A. ship's pump speeding up B. booster pump failing to start C. booster pump being lined up in the wrong direction D. booster pump coming on the line and discharging properly
D
What are submerged LNG pump bearings lubricated by? A. graphite B. silicon grease C. Low Temp-a special cryogenic lubricant D. LNG
D
What happens to the volume of flammable and combustible liquids when temperature is increased? A. it remains constant if pressure remains constant B. it contracts C. it remains constant D. it expands
D
What is TRUE of pressure/vacuum valves? A. They are designed to provide for the flow of small volumes of tank atmospheres caused by thermal variations in a cargo tank. B. They should be kept in good working order by regular inspection and cleaning. C. They should operate in advance of the pressure/vacuum breakers. D. All of the above.
D
What is TRUE of pressure/vacuum valves? A. They are designed to provide for the flow of small volumes of tank atmospheres caused by thermal variations in a cargo tank. B. They should operate in advance of the pressure/vacuum breakers. C. They should be kept in good working order by regular inspection and cleaning. D. All of the above
D
What is meant by "thieving" a petroleum cargo? A. Reducing the gross cargo calculations to net amounts B. Adjusting the cargo figures to coincide with the draft C. Siphoning off a few barrels of petroleum for shipboard use D. Determining the amount of water (if any) in each cargo tank
D
What is the standard net barrel for petroleum products? A. 48 gallons at 70° Fahrenheit B. 50 gallons at 50° Celsius C. 60 gallons at 100° Saybolt D. 42 gallons at 60° Fahrenheit
D
When loading bulk liquid cargo, what is the FIRST action you should take if a cargo valve jammed open? A. Run out the vessel's or terminal's fire hose. B. Trip the pump relief valve. C. Call the owner, operator, or terminal supervisor. D. Order the dock man to shut down.
D
When loading bulk liquid cargo, what is the FIRST action you should take if a cargo valve jammed open? A. Trip the pump relief valve. B. Run out the vessel or terminal fire hose. C. Call the owner, operator, or terminal supervisor. D. Order the dock man to shut down.
D
When planning the loading or discharging of a VLCC (100,000 DWT+) what is the most important consideration? A. Rate of discharging B. Rate of loading C. Draft and trim D. Limits of the bending moments
D
Where do you check when measuring the oxygen content of the cargo tanks prior to loading cargoes requiring vapor recovery? A. one meter from the tank bottom and one meter below the tank top B. at three meter intervals from the tank top to the bottom C. one half the ullage of the tank and one meter above the tank bottom D. one half the ullage of the tank and one meter below the tank top
D
Where would you expect to find a "charged mist" on a tanker? A. In the overflow line while topping off. B. In a common vent header during tank ballasting. C. In a cargo tank during inerting operations. D. In a cargo tank during "Butterworthing".
D
Which characteristic is an advantage of a butterfly valve as compared to a gate valve? A. Less maintenance required B. Precise control over cargo flow C. No resistance to cargo flow when open D. Quick operation
D
Which factor must be considered when determining the order of loading of dissimilar products through the same piping system aboard a tanker? A. Reid vapor pressures B. Flash points C. Specific gravities D. Contamination of the cargo
D
Which factor must be considered when determining the order of loading of dissimilar products through the same piping system aboard a tanker? A. Specific gravities B. Flash points C. Reid vapor pressures D. Contamination of the cargo
D
Which of the following describes (auto) ignition temperature? A. the temperature at which a 1% mixture of the fuel with air will explode B. the temperature at which a fuel begins to give off explosive vapors C. the temperature at which a fuel if ignited will continue to burn D. the temperature at which no spark or flame is required to ignite gas or vap
D
Which tanker discharge pattern would be the safest and most efficient? A. Start pumping from midships and then work forward and aft simultaneously as the midships tank is emptied B. Start pumping from forward, midships, and aft with the discharge distributed equally among the tanks C. Empty the forward tanks and start working aft, emptying each tank in sequence D. Start discharging with most of the discharge coming from forward, but include some from midships and after tanks
D
While discharging a cargo, the stripping of the tanks falls behind schedule. What does this indicate? A. main pumps are working at a high discharge pressure B. stripping pump is not primed C. stripping line is cross-connected to the main line D. main pumps are leaving too much oil in the tanks
D
You may be able to avoid loss of suction in a pump by __________. A. opening the vent cock on the pump B. using a full tank to keep the pump primed C. closing down on the tank valve D. All of the above
D
Your tank vessel is loaded down to her marks, and you find that she has too much trim by the stern. What action should you take to obtain an even keel and still maintain profitability? A. load more cargo forward B. discharge cargo midships C. add ballast forward D. shift bunkers forward
D
