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Engine Room Steam Plants

 

A 8 ounces of oxygen, dissolved in 500,000 pounds of water, is a concentration of __________. 1.0 ppm 4.0 ppm 8.0 ppm 16.0 ppm
C A back pressure trip on a ship's service turbo-generator functions to trip the turbine under what circumstance? gland seal leakoff pressure is too high lubricating oil pressure is too low amount of cooling water to the condenser is insufficient amount of cooling water to the condenser is excessive
C A back-pressure trip on a ship's service turbo-generator functions to trip the turbine under what circumstance? gland seal leakoff pressure is too high lubricating oil pressure is too low amount of cooling water to the condenser is insufficient amount of cooling water to the condenser is excessive
C A boiler main feed check valve functions to __________. check pressure pulsations in the feed line provide feed pump positive discharge head prevent backflow of water from the boiler in the event of a feed pump failure reduce feed pump discharge pressure loading
D A boiler pressuretrol senses steam pressure changes and __________. controls the flow of feedwater to the boiler monitors the boiler high water level secures the fires when a fusible plug burns out automatically regulates the quantity of oil and air flow to the burner
B A centrifugal oil purifier should be shut down if the __________. presence of oil is indicated in the gravity tank bull's-eye purifier is vibrating badly trapped water is discharged from the overflow line observation cover clamp needs tightening
D A lube oil sample is taken from the main engine lube oil system and visually inspected. Which of the following would indicate water contamination? A clear, amber color A reddish-orange color A black color A milky-white color
C A main condenser utilizing a scoop for the circulation of sea water must be constructed as a __________. parallel flow heat exchanger counterflow heat exchanger single-pass heat exchanger two-pass heat exchanger
A A photoelectric cell installed in a boiler burner management system __________. opens the burner circuit upon sensing a flame failure detects a flame failure by monitoring radiant heat from glowing refractory requires mechanical linkage to secure the burner fuel supply must be bypassed at low firing rates
B A poorly cleaned lube oil purifier bowl may result in __________. excessive lube oil consumption improper separation excessive water discharge rate insufficient oil supply to the gravity tank
C A slight vacuum is maintained in the shell of the first stage heater shown in the illustration. The primary reason for the vacuum is to __________. Illustration SG-0025 force the use of the main condenser as the drain cooler provide a low pressure area to guarantee feed water flow to the heater maintain a positive flow of steam as supplied by the main engine LP bleed system avoid the necessity of having to use the condensate pumps
C A turbo-generator back pressure trip can be actuated as a result of __________. an excessive pressure drop through the turbine a steam inlet valve being partially open insufficient circulating water flow through the condenser excessively low exhaust pressure
C According to the illustrated auxiliary steam and HP bleed steam system diagram, what are the characteristics of the steam supplied to the main feed pump drive turbines? Illustration SG-0005 143 psig desuperheated steam 850 psig saturated steam 850 psig desuperheated steam 850 psig superheated steam
D According to the illustrated auxiliary steam and HP bleed system diagram, what steam loads are supplied by the same steam pressure reducing station? Illustration SG-0005 Contaminated evaporator and distilling plant air ejectors Tank cleaning heater and ship's whistle Main feed pump drive turbines and turbine gland seal regulators Main boiler burner steam atomizers and turbine gland seal regulators
D According to the illustrated cross-compounded main propulsion turbine set, where are the astern elements located? Illustration SE-0016 Aft end of the high pressure turbine. Aft end of the low pressure turbine Forward end of the high pressure turbine. Forward end of the low pressure turbine.
B According to the illustrated diagram, what is the correct sequential order of heat exchangers that the main condensate pump pumps condensate through? Illustration SG-0010 Main air ejector condenser, dearating feed tank, first stage feed heater, gland exhaust condenser. Main air ejector condenser, gland exhaust condenser, first stage feed heater, dearating feed tank. Main air ejector condenser, first stage feed heater, gland exhaust condenser, dearating feed tank. Main air ejector condenser, dearating feed tank, gland exhaust condenser, first stage feed heater.
A According to the illustrated diagram, what is the normal source of heat for the boiler air heaters when the vessel is underway under full power? Illustration SG-0024 Intermediate pressure bleed steam. Main feed pump drive turbine exhaust. Dearating feed tank. Main boiler furnace.
D According to the illustrated diagram, what is the normal source of heat for the first stage feed heater and the distilling plants when the vessel is underway under full power? Illustration SG-0024 Dearating feed tank. Main feed pump drive turbine exhaust. Intermediate pressure bleed steam. Low pressure bleed steam.
C According to the illustrated diagram, what statement is true concerning the operation of the "make-up valve"? Illustration SG-0010 The "make-up valve" opens when the level in the main condenser hot well rises to a certain level and allows the excess water to be pumped to the distilled water tank by the main condensate pump. The "make-up valve" opens when the level in the DFT (dearating feed tank) drops to a certain level and allows make-up water to be drawn out of the distilled water tank via vacuum drag into the main condenser. The "make-up valve" opens when the level in the main condenser hot well drops to a certain level and allows make-up water to be drawn out of the distilled water tank via vacuum drag into the main condenser. The "make-up valve" opens when the level in the DFT (dearating feed tank) rises to a certain level and allows the excess water to be pumped to the distilled water tank by the main condensate pump.
B According to the illustrated diagram, what statement is true concerning the operation of the main condenser hotwell level control device? Illustration SG-0010 The main condenser hotwell level is controlled by controlling the speed of the main condensate pump. The main condenser hotwell level is controlled by throttling the flow in a recirculating line teed off the main condensate pump discharge line and leading back the main condenser. The main condenser hotwell level is controlled by throttling the main condensate pump discharge to the main air ejector. The main condenser hotwell level is controlled by throttling the main condensate pump suction from the main condenser hotwell.
C According to the illustrated lubricating oil system diagram, which of the labeled items is the lube oil gravity tank? Illustration SE-0011 A B C K
A According to the illustrated lubricating oil system diagram, which of the labeled items is the lube oil renovating tank? Illustration SE-0011 A B C K
A According to the illustrated lubricating oil system diagram, which of the labeled items is the lube oil settling tank? Illustration SE-0011 A B C K
D According to the illustrated lubricating oil system diagram, which of the labeled items is the lube oil sludge tank? Illustration SE-0011 A B C K
C According to the illustrated lubricating oil system diagram, which of the labeled items would be used to manually strip out the sludge from the bottom of the main lube oil sump prior to entry for cleaning? Illustration SE-0011 G M N D
A According to the illustrated lubricating oil system diagram, which of the labeled items would be used to verify that the gravity lube oil tank is full and overflowing? Illustration SE-0011 D N O The gravity tank does not ordinarily overflow.
A According to the illustrated steam and HP bleed system diagram, which steam pressure reducing station has the lowest set point? Illustration SG-0005 Tank cleaning seawater heater Main boiler burner steam atomizers and turbine gland seal regulators Main, auxiliary, and distilling plant air ejectors Ship's whistle
D According to the illustrated steam tables, what would be the superheater outlet temperature if saturated steam at 400 psia was elevated 192.83 F? Illustration SG-0004 192.83 F  247.31 F  444.59 F 637.42 F
C According to the illustration, bellows "I" in the gland seal regulator is actuated by __________. Illustration SE-0019 lube oil pressure control air pressure gland seal steam pressure steam throttle pressure
A According to the illustration, what actuates the bellows "I" in the gland seal regulator? Illustration SE-0019 gland seal steam pressure control air pressure lube oil pressure steam throttle pressure
D According to the temperature/enthalpy diagram for water at atmospheric pressure, if the substance is undergoing a heat gain, what heat transfer process is represented by the region associated with "4"? Illustration SG-0001 Water absorbing its specific heat and experiencing a rise in temperature. Steam dissipating its specific heat and experiencing a drop in temperature. Steam dissipating its latent heat of condensation and changing its physical state to become water. Water absorbing its latent heat of vaporization and changing its physical state to become steam.
B After a boiler has been taken off the line and is cooling, the air cock is opened to __________. purge all air from the steam drum prevent the formation of a vacuum within the boiler guard against entrapped gas pockets in the superheater allow even cooling of the steam drum
A After the steam leaves the low pressure turbine, it enters the __________. main condenser turbine extraction valve manifold feed and filter tank first-stage feed water heater
D Air accumulated in the inter condenser of the air ejector assembly is discharged directly to the __________. high pressure turbine main condenser atmosphere after condenser
B Air in the main condenser is harmful because it will __________. cause heat to be transferred too rapidly decrease the vacuum in the main condenser cause the turbine casing to warp and bow decrease the turbine exhaust steam pressure
A Allowance for axial expansion of the steam turbine due to temperature changes is provided for by the use of __________. a deep flexible I beam support rotor position indicators pivoted-shoe type thrust bearings casing flexible joints
C An efficient seal is normally obtained between the upper and lower halves of a turbine casing by __________. asbestos gaskets flexible steel seal strips precision metal-to-metal contact copper gaskets
D An excess pressure governor is a special type of control device which would normally be found on a __________. main circulator pump forced draft fan low pressure propulsion turbine turbine-driven feed pump
B An overheated bearing in the main propulsion unit is indicated by __________. high level in the lube oil sump high temperature of the lube oil leaving the bearing bubbles in the sight flow glasses sludge in the lube oil strainers
A As Chief Engineer, while at sea, the engine room reports the superheater outlet temperature is erratic and fluctuating. Which of the following could be a possible cause? Boiler carryover. Too much excess air. Low boiler water level. Low feed water temperature.
B As found in a reduction gear drive system, thrust bearings serve to __________. limit the radial movement of the shaft transmit the force produced by the propeller to the structure of the ship hold the main engine in place increase the shaft speed
B As shown in the illustrated D type single furnace boiler, what does item "E" represent? Illustration SG-0008 Riser tubes Downcomer tubes Upcomer tubes Support tubes
B As shown in the illustrated D type single furnace boiler, what does item "F" represent? Illustration SG-0008 Screening tubes Generating tubes Superheater tubes Desuperheater tubes
A As shown in the illustrated D type single furnace boiler, what does item "H" represent? Illustration SG-0008 Feedwater economizer Combustion air heater Integral superheater Auxiliary steam desuperheater
D As shown in the illustration, bellows "I" in the gland seal regulator is actuated by __________. Illustration SE-0019 lube oil pressure steam throttle pressure control air pressure gland seal steam pressure
C As shown in the illustration, live steam is supplied to the gland seal regulator via __________. Illustration SE-0019 line "G" line "A" line "C" line "D"
A As shown on the illustrated boiler steam drum gauge glass, what do items "D" and "M" represent? Illustration SG-0020 mica sheets glass plate inserts cover plates asbestos gaskets
B As shown on the illustrated huddling chamber type safety valve drawing, what item is associated with setting the blow down adjustment? Illustration SG-0018 A B C G
C As shown on the illustrated soot blower diagram, what item is responsible for opening and closing the steam admission poppet valve at the appropriate times during element rotation? Illustration SG-0023 5 6 7 11
D As shown on the illustrated sootblower diagram, how is the soot blower element rotated? Illustration SG-0023 Manually operated with a hand wheel. Air operated with a pneumatic motor. Manually operated with a hand-crank. Manually operated with an endless chain.
B As the speed of an oil lubricated ball bearing increases, fluid friction, due to churning, generates heat. This condition may be avoided by __________. adding more lubricant until the ball bearings are completely covered with a layer of oil reducing the quantity of lubricant until only a mist of oil is present on the ball bearings maintaining a continuous fluid level over half of the outer race installing oil rings on the ball bearings
C Assuming that the turbine in question is a condensing turbine, what system connections are represented by areas labeled "E" and "F" on the illustrated turbine gland? Illustration SE-0006 Both "E" and "F" represent the gland sealing steam system connections. Both "E" and "F" represent the gland exhaust steam system connections. "E" represents the gland sealing steam system connection and "F" represents the gland exhaust steam system connection. "E" represents the gland exhaust steam system connection and "F" represents the gland sealing steam system connection.
B At what piston position should you set the valve clearance on a four stroke auxiliary diesel engine? BDC on the intake stroke TDC on the compression stroke BDC on the power stroke TDC on the exhaust stroke
D Babbitt is a metal alloy commonly used for lining __________. shim stock saltwater piping valve seats precision bearings
D Bottom blow valves are installed on water-tube boilers to __________. completely drain the boiler in an emergency prevent sludge from forming in the steam drum remove floating impurities from the boiler water surface remove settled solids from the water drum
D By which of the listed methods may heat be transferred from one body to another? Radiation Convection Conduction All of the above.
C Clean, low pressure steam drains are collected in the __________. deaerating feed water heater contaminated drain inspection tank atmospheric drain tank main condenser hot well
B Concerning the classification of steam turbines, a cross compound designed unit __________. consists of reaction stages and a dummy piston consists of a high pressure turbine, crossover pipe, and low pressure turbine is made up of a varied assortment of impulse and reaction staging consists of one Curtis stage and reaction blading
C Condensate return lines from tank heating coils are led to the __________. DC heater atmospheric drain tank contaminated drain system main condenser
B Cooling water to the vent condenser in a DC heater is supplied by the __________. salt water circulator main and/or auxiliary condensate pump main feed pump feed booster pump
D During high speed operation of the main turbine propulsion unit, the heat absorbed by the lubricating oil is removed by the __________. distillate cooler lube oil purifier sump vents lube oil cooler
C During normal operation of a main propulsion turbine, the lube oil supply temperature to the bearings should be maintained at approximately __________. 72F 60F 120F 140F
A During the routine inspection of an operating centrifugal lube oil purifier, you notice oil discharging through the water discharge port. Which of the following actions should be taken? Add water to seal the bowl. Decrease the temperature of the entering oil to lower the specific gravity. Increase the bowl speed to balance the water and oil discharges. Do nothing as this is normal.
A Excessive recirculation of condensate should be avoided, as it can cause __________. excessive cooling of the condensate overheating of the air ejectors the condenser hot well to be completely drained at low speeds overheating of the vent condenser
C Excessive water in an operating lube oil system can be detected by __________. sounding the lube oil settling tank checking oil for unusually low temperature the amount of water discharging from the lube oil purifier examining the lube oil strainers
C Excessive water loss from the main feed system can be caused by __________. excessive recirculation of condensate from the outlet of the air ejector condenser to the main condenser a leak in the desuperheater internal gasket an atmospheric drain tank trap frozen in the closed position a vapor bound main condensate pump
A For the gland seal regulator shown in the illustration, an increase in gland seal pressure will result in __________. Illustration SE-0019 piston 'F" moving upward to shut the makeup steam valve "B" and open the exhaust valve "E" piston "F" moving downward to shut the makeup steam valve "B" and open the exhaust valve "E" piston "F" moving upward to open the makeup steam valve "B" and close the exhaust valve "E" piston 'F" moving downward to open the makeup steam valve "B" and close the exhaust valve "E"
D Fuel oil settling tanks are used to __________. store oil for immediate use precipitate out water and solids facilitate the stripping of sludge and water All of the above.
B Fuel piping should be regularly inspected for leaks. What leak location would be particularly troublesome in terms of presenting a fire hazard? Fuel oil service pump shaft seal. Fuel oil service pump discharge strainer. Fuel oil service pump suction strainer. Fuel oil transfer pump suction strainer.
B Gland sealing steam is used during steam turbine operation to prevent the loss of __________. air vacuum temperature oil
B High pressure and low pressure drain systems are part of the __________. auxiliary turbine bleed system condensate drain system boiler drain system contaminated drain system
D High pressure steam drains are normally discharged to the __________. drain and inspection tank reserve feed tank atmospheric drain line DC heater
A How is an auxiliary turbine boiler feed pump normally stopped? by actuating the throttle hand tripping device by increasing the load on the driven unit by closing the exhaust valve slightly by rotating the hand lube oil pump backwards
A If a steam propulsion plant is provided with two main propulsion boilers, two fuel oil service heaters, two fuel oil service pumps, and two fuel oil settling tanks, what is the capacity of each fuel oil service heater? Each heater has the capacity to supply heated fuel to both boilers under full load with one service pump running. Each heater has the capacity to supply heated fuel to both boilers under full load with both service pumps running. Each heater has the capacity to supply heated fuel to just one boiler under full load with both service pumps running. Each heater has the capacity to supply heated fuel to just one boiler under full load with one service pump running.
D If an attempted light off of an idle boiler fails, what should be done? Another light off attempt (just one) can be undertaken before any additional precautions need to be observed. Another light off attempt (with no limit) can be undertaken before any additional precautions need to be observed. The fuel should be secured to the boiler and the boiler allowed to remain idle for a few minutes before another light off attempt is made. The fuel should be secured to the boiler and the furnace purged of combustible vapors with the forced draft fan before another light off attempt is made.
A If an auxiliary diesel engine is overheating at a steady load, what should be the first thing that you suspect? loss of cooling water flow air intake blocked excessive fuel low lube oil pressure
A If an auxiliary diesel engine starts firing but does not come up to normal speed, without load or under a small load, one cause may be __________. a clogged fuel filter late fuel injection incorrect fuel oil excessive compression pressure
A If live steam is supplied directly to the tank heating coils, the collected drains in the "clean" section of the contaminated drain inspection tank are removed directly to the __________. atmospheric drain tank main and/or auxiliary condenser deaerating feed water heater makeup feed water tank
C If the boiler water and condenser hot well levels are normal, but the DC heater level is only 30% of full, you should __________. increase the speed of the condensate pump bypass the vent condenser and third-stage feed heater open the makeup feed open the feed pump recirculating valve wide
A If the condensate level in the loop seal of the air ejector inter condenser is lost, __________. air will be drawn back into the main condenser no condensate will flow through the system the air ejector will not transfer heat to the condensate the air ejector will overheat
B If the water level in a steaming boiler is dropping rapidly and cannot be kept at the normal level by standard practices, you should __________. speed up the feed pump to raise the water to normal secure the fires and then secure the steam stop secure the steam stop and then secure the fires blow down the gauge glass to find the true water level
C If water hammer develops while opening the valve in a steam line, which of the following actions should be taken? Stop opening the steam valve, open the drain line valves, resume opening the steam valve slowly, and shut the drain line valves after the steam valve is open fully.  Increase the speed of opening the steam valve to rapidly heat the line to stop the water hammer. Shut the steam valve at once, open the drain valves until all moisture is drained, shut the drain line valves, and slowly open the steam valve again. Continue to fully open the steam valve as the drain line valves are opened until all moisture is drained, shut the drain line valves.
A If you noted a large difference in the pressures indicated by a duplex pressure gage to the fuel oil system strainer, you should __________. shift to a clean fuel oil strainer secure the fuel oil service pump increase the fuel pump discharge pressure reduce the firing rate of the boilers
B In a boiler equipped with a three-element automatic feed water regulator, erratic variations in the steam drum water level could be caused by __________. ruptured feed water control valve diaphragm high solids content and foaming in the drum low feed water temperature high feed water temperature
A In a coil-type forced circulation water-tube boiler, __________. steam demand response is comparatively rapid steam is recirculated through heating coils in the boiler unevaporated feedwater is discharged through the skim tube steam demand response is slow
C In a cross-compounded turbine propulsion plant, steam enters the __________. high pressure unit and then cross-flows to the condenser high and low pressure units simultaneously high pressure unit and then flows through a crossover to the low pressure unit high pressure, intermediate and low pressure units simultaneously
B In a disk type centrifugal purifier, the bowl is mounted on the upper end of the __________. radial thrust bearing bowl spindle worm wheel friction clutch
C In a flash type distilling plant, a screen is fitted over the suction connection to the brine overboard pump in order to prevent __________. the pump from cavitating electrolysis from occurring in the pump scale from passing into the brine pump and clogging impeller passages excessively large salt crystals from damaging the pump
C In a gravity type lube oil service system, if no lube oil appears in the sight glass of the return drop line while underway, this is a positive indication that __________. there is a failure of all lube oil pumps no oil is flowing to the bearings no oil is overflowing from the gravity tank the gravity tanks are empty
B In a main propulsion steam turbine installation, the condensate pump initially discharges to the __________. distillate tank air ejector condenser deaerating feed tank first stage heater
B In a pressure type main propulsion turbine lubrication system, the lube oil service pumps normally take suction from the main sump and discharge directly to the __________. main thrust bearing lube oil coolers gravity feed tank lube oil header
B In a single furnace boiler, where is the steam typically cooled for use as auxiliary steam? Condenser Desuperheater Superheater Air ejector
B In accordance with 46 CFR Subchapter F (Marine Engineering), main propulsion water-tube boilers are not required to be fitted with a surface blow-off valve if the design pressure is which of the following? 300 psig (2169 kPa) or over 350 psig (2413 kPa) or over 500 psig (3548 kPa) or over 550 psig (3893 kPa) or over
D In accordance with 46 CFR Subchapter F (Marine Engineering), new fuel oil service piping between pumps and burners are required to be subjected to __________. a hydrostatic leak test to the design pressure specified by the Coast Guard a hydrostatic test of 1.25 times the maximum allowable pressure with the relief valves closed spot radiographic examination of portions of the finished weld joints a hydrostatic test of 1.5 times the maximum allowable pressure but not less than 500 psi (3447 kPa)
D In accordance with 46 CFR Subchapter F (Marine Engineering), the final setting of boiler safety valves is required to be conducted in presence of the __________. Chief Engineer OCMI COTP Marine Inspector
B In accordance with 46 CFR Subchapter F (Marine Engineering), when preparing to hydrostatically test a water-tube boiler, which of the following steps must be followed? Remove all inspection plates and manhole covers as required by the marine inspector. Fill the boiler with water not less than 70F (21.1C), nor more than 160F (71.1C). Make arrangements for simultaneously testing main and auxiliary steam stops with water and steam pressure. Warm the boiler to a temperature not exceeding 100F (37.8C). 13. T reatment of boiler feed water for the control of hardness is necessary to prevent_.
D In accordance with 46 CFR Subchapter F (Marine Engineering), which of the following is permitted in boiler fuel oil service system discharge piping? Bushings made of seamless steel. Street ells made of carbon steel. Pipe unions one inch or greater in diameter. Screwed bonnet valves of the union bonnet type.
C In accordance with 46 CFR Subchapter F (Marine Engineering), which of the following statements is true concerning the inspection of water-tube boilers? All boiler mounting studs or bolts shall be removed for examination by a Coast Guard inspector every 4 years after initial inspection. All mountings shall be opened up and examined by a Coast Guard inspector at eight year intervals after the initial inspection. Boiler mountings attached directly to the boiler plating by screwed studs and nuts shall be removed and examined every 10 years. Boiler mountings attached to boiler nozzles must be opened and removed for examination every 8 years.
C In addition to sensing steam drum water level, what additional sensing input does a two- element feed water regulator control system utilize? Boiler feed flow Boiler fuel flow Boiler steam flow Boiler air flow
A In terms of the completeness of combustion, in viewing the condition of the stack, what would be the indication of the LEAST complete combustion and LOWEST boiler efficiency? Black smoke White smoke Clear stack Light brown haze
A In terms of the completeness of combustion, in viewing the condition of the stack, what would be the indication of the MOST complete combustion and HIGHEST boiler efficiency? Light brown haze Clear stack White smoke Black smoke
B In terms of the diluting effect of excessive excess air, when viewing the flame through a peephole, what would be the indication of the greatest diluting effect with far too much excess air? Golden yellow flame Dazzling white flame Yellow flame Orange flame
C In the condensate system, the automatic recirculating valve can be actuated by the __________. superheater steam flow DC heater water level condensate temperature condensate pump discharge pressure
A In the illustrated exploded view of a pivoted shoe thrust bearing, identify the base ring __________. Illustration SE-0014 I Q N L
B In the system illustrated, what type of valves are downstream of point "A"? Illustration SG-0005 swing check/ stop valves stop-check/ stop valves globe valves/ gate valves gauge valves/ drain valves
A In what part of a main boiler fuel oil service system is it permissible to raise the temperature of the fuel above the flash point? Between the fuel oil service heater and the boiler burner atomizers. Between the fuel oil service pump and the fuel oil service heater. Between the fuel oil settling tank on service and the fuel oil service pump. At no point in the fuel oil service system is it permissible to raise the temperature above the flash point.
C In which four stroke diesel engine system are sacrificial zinc anodes most commonly found? fuel system exhaust system cooling system lube oil system
C In which of the listed components is chemical energy converted to thermal energy with regards to boiler operation? Superheater Steam drum Furnace Economizer
B Lube oil is preheated before centrifuging in order to __________. boil off water improve purification reduce friction of the rotating components of the centrifuge prevent corrosion
A Lube oil temperature leaving the lube oil coolers is regulated by throttling the __________. cooling water outlet valve lube oil outlet valve cooling water inlet valve lube oil return flow valve
C Magnets are installed in the main propulsion turbine lube oil strainers to attract metal particles released through wearing of the __________. turbine blades Babbitt bearings reduction gears turbine labyrinth
C Makeup feedwater is brought into an operating closed feed system via the __________. auxiliary feed pump main feed pump condenser vacuum drag line feed booster pump
D Most auxiliary turbine feed pumps do not require an external source of gland sealing steam because they __________. operate at relatively low pressures operate with only a small amount of axial thrust utilize carbon packing rings at the low pressure end exhaust to pressures above atmospheric pressure
D Most auxiliary turbine feed pumps do not require an external source of gland sealing steam because they __________. operate at relatively low pressures utilize carbon packing rings at the low pressure end operate with only a small amount of axial thrust exhaust to pressures above atmospheric pressure
A On a main propulsion turbine set of a merchant ship, where is the astern staging generally located? Within the low pressure turbine Within the intermediate pressure turbine Within a separate astern turbine Within the high pressure turbine
B On a ship equipped with a gravity type lube oil system, which of the conditions listed will occur FIRST if the main lube oil pump discharge pressure is lost? All bearing oil pressure will be lost. An alarm will sound. The astern throttle will immediately open. Lube oil will be provided to the bearings and gears via the gravity tank overflow line.
B On a steam vessel with two high pressure boilers, one suspects a superheater leak. How would you determine which boiler may be leaking and what would be the indication(s)? Hissing noises from boiler casing in way of the superheater headers and/or evidence of water leaking from casing doors. Increased boiler make-up water consumption, increased opening of that boiler's feed water valve, and/or unusual control signals to that boiler's feed water valve. Decreased superheated steam temperature from the effected boiler and reduction in boiler water chemical concentration. Increased boiler water make-up consumption and a loss of boiler water treatment chemical concentration in the effected boiler.
C On US flag steam propulsion vessels, the main reason for having a low suction line on the fuel oil service or settling tanks is to accomplish which of the following? increase the amount of fuel available for use decrease suction head on the pump facilitate water removal prevent loss of suction during rough weather
D Originally steam ship f/o service and settling tanks were designed with only a high suction and a low suction and no other valves. What was the purpose of the low suction? prevent loss of suction during rough weather increase the amount of fuel available for use decrease suction head on the pump facilitate water removal
A Prior to initial light-off of an idle boiler, what must first be done to prevent boiler flareback? The furnace must first be purged of combustible vapors with the forced draft blower while the air register doors are open. The furnace must first be purged of inert vapors and oxygen with the forced draft blower while the air register doors are closed. The furnace must first be purged of combustible vapors with the forced draft blower while the air register doors are closed. The furnace must first be purged of inert vapors and oxygen with the forced draft blower while the air register doors are open.
C Prior to relieving the watch you should first check the fireroom status by verifying the boiler steam drum level and __________. port and starboard settling tank levels preparing to blow tubes inspecting the fires and burners stack temperature
D Salt water contamination of condensate could occur at which component? Inter condenser DC heater After condenser Fresh water evaporator
B Serious tube leaks in the air ejector after condenser assembly may cause __________. an overflow of the contaminated drain inspection tank an overflow of the atmospheric drain tank clogged steam strainers fouled nozzles
B Steam supplied to the main propulsion turbines is __________. desuperheated steam superheated steam saturated steam wet steam
A Steam traps are essential components of any steam cycle. When malfunctioning, they will reduce cycle's energy efficiency and may cause other problems in the condensate drain system. What simple, definite, technique may one use to identify a malfunctioning trap? Use a surface temperature indicating instrument on up stream and down stream piping of trap and compare the two readings. Open a drain line down stream of trap to see if steam is emitted. Intermittent noises may/would indicate a malfunctioning trap. Listen to the trap's function sounds, such as hissing, condensate flow.
A The adjustable spherically seated self-aligning bearing housings used in main turbines are provided with oil deflector rings. The function of these rings is to __________. prevent the external leakage of oil out of the bearing housing ensure efficient lubrication of the bearing direct the flow of oil through the bearing prevent the leakage of main steam into the oil
D The adjustable spherically seated self-aligning bearing housings used in turbines are provided with oil deflector rings. The function of these rings is to __________. prevent the leakage of main steam into the oil direct the flow of oil through the bearing ensure efficient lubrication of the bearing prevent the external leakage of oil out of the bearing housing
A The astern guarding valve on main propulsion steam turbine units must be open when a vessel is __________. maneuvering into port at full sea speed running with a warm bearing loading cargo
A The atmospheric drain tank (ADT) normally drains to the__________. main and/or auxiliary condenser main and/or auxiliary air ejector condenser reserve feed tanks distillate tank
A The automatic recirculating valve in the main condensate recirculating line is controlled by a temperature sensor which is located at the __________. air ejector condensate discharge main condensate pump suction main condensate pump discharge condensate inlet to the main air ejectors
C The auxiliary exhaust system shown in the illustration can be supplied by steam from the __________. Illustration SG-0024 distilling plant turbo generators IP bleed system LP bleed system
D The best indication that a bearing is being properly lubricated is by the __________. oil temperature leaving the lube oil cooler oil pressure at the lube oil pump discharge lube oil strainer condition during cleaning and inspection oil temperature indicated by the bearing thermometer
B The boiler superheater vent, using the illustration, would be connected to the part labeled "________ ". Illustration SG-0007 J M C D
B The component shown in the illustration, labeled "I", is the __________. Illustration SE-0013 first reduction pinion first reduction gear second reduction gear second reduction pinion
A The component shown in the illustration, labeled "IV", is the __________. Illustration SE-0013 bull gear high speed pinion low speed pinion first reduction gear
D The connections labeled "A" in the illustration, are used to __________. Illustration SG-0025 provide a point of admission for the steam air heater drains drain condensate from the feed water heater to the main condenser provide a point of admission for the L.P. bleed steam maintain a vacuum in the shell of the feed water heater
C The constant pressure governor of a turbine-driven feed pump maintains which of the following pressures at a constant value for all capacities? Pump suction Turbine inlet Pump discharge Turbine exhaust
A The cooling water flow from an air ejector inter condenser and after condenser is discharged directly into the __________. condensate and feed system main condenser hot well atmospheric drain tank auxiliary condenser hot well
A The DC heater automatic level dump valve is used to __________. drain excess feed water to the distilled water tank divert the flow of condensate from the first stage heater to the vent condenser recirculate condensate to the atmospheric drain tank maintain a proper condensate level in the condenser hot well
D The DC heater functions to __________. remove air from feed water heat feed water store feed water All of the above.
A The dirty oil inlet on centrifugal lube oil purifiers is located at the __________. bottom of the tubular bowl type top or bottom of the disk type depending upon whether the unit is to be operated as a separator or clarifier bottom only of the disk type top of the tubular bowl type
D The duty engineer reports an alarm on the condensate observation tank oil sensor. Which of the following could be a possible cause? A leaking hot water heater. A leaking fuel cooler. A leaking main engine lube oil cooler. A leaking bunker tank heating coils.
D The feedwater heater shown in the illustration is actually comprised of three separately functioning heat exchangers. These heat exchangers are identified as the __________. Illustration SG-0025 first stage heater, intercondenser, and aftercondenser drain cooler, distillate condenser, and fresh water drain collector intercondenser, aftercondenser, and gland exhaust condenser first stage heater, gland exhaust condenser, and drain cooler
B The gravity tank in a gravity lube oil system serves to __________. supply the lube oil service pump with a positive suction head maintain oil supply for several minutes to bearings should the lube oil service pump fail store heated lube oil settle lube oil prior to purifying
C The intermediate pressure bleed steam system, shown in the illustration, is used to supply steam at approximately __________. Illustration SG-0024 13.6 psig 35.0 psig 67.0 psig 13.6 psia
A The item shown in the illustration is commonly identified as a __________. Illustration GS-0124 bowl type purifier machine shop lathe attachment machine shop milling machine attachment disk type purifier
A The jacking gear must be engaged as quickly as possible when securing the Main Turbines in order to __________. prevent uneven cooling of the turbine rotors maintain a constant supply of lube oil to the main unit prevent the stern tube bearing from overheating permit rapid cooling of the reduction gears
C The jacking gear on main propulsion turbines can be used to __________. lift the reduction gear casing provide propulsion in emergencies provide reduction gear tooth inspection reduce turbine speed during maneuvering
A The leakage of air into the pump casing by way of the packing gland of a condensate pump, is prevented by __________. a water seal line to the packing gland an air seal line from the compressed air line special packing in the stuffing box the vacuum in the pump suction
C The lube oil coolers installed in a gravity lubricating oil system are located between the __________. gravity tanks and lube oil sump lube oil sump and lube oil pumps lube oil pumps and gravity tanks gravity tanks and main units
B The main feed check valve functions to __________. reduce feed pump discharge pressure loading prevent backflow of water from the boiler in the event of a feed pump failure check pressure pulsations in the feed line provide feed pump positive discharge head
D The main reason for having a low suction line on the fuel oil service or settling tanks is to __________. increase the amount of fuel available for use decrease suction head on the pump prevent loss of suction during rough weather facilitate water removal
D The main turbine gland sealing system is designed to __________. seal the turbine shaft against air leakage into the turbine casing allow minimal steam leakage out of the gland regulate steam pressure to the glands when the main turbine is operating at reduced speeds All of the above.
A The maximum temperature rise of oil passing through any reduction gear set, or bearing, should not exceed __________. 50F (27.8C) 90F (44.5C) 70F (38.9C) 30F (16.7C)
A The overspeed tripping device installed on an auxiliary turbine is automatically actuated by __________. centrifugal force high back pressure hydraulic pressure pneumatic force
D The pressure in the feedwater system must exceed boiler steam drum pressure in order to __________. prevent air leakage into the feed water system prevent water hammer in the lines remove the steam from the steam drum force the feed water into the boiler
D The purpose of a "peep" hole in the boiler casing is to __________. examine the condition of the refractory cones check for excess smoke in the stack check the operation of the soot blowers examine the condition of the flame
C The purpose of the steam control valves installed in the auxiliary exhaust line is to __________. regulate back pressure in the desuperheater line seal the vent condenser to prevent the escape of condensate control steam admission and maintain the proper steam spray pattern in the DC heater preheat the condensate before it enters the vent condenser
B The safety device provided on a turbo generator which closes the throttle automatically when the cooling water to the condenser is insufficient is called a/an __________. over speed trip back pressure trip low pressure trip high temperature trip
C The solenoid valves in the fuel oil supply line to a boiler are automatically closed by __________. a decrease in feed temperature high furnace air pressure high steam pressure low steam pressure
B The source of metal particles adhering to the magnets in a lube oil strainer is probably from the __________. shaft journal reduction gears Babbitt material bearing shell
D The steam drum in a D-type marine boiler __________. maintains circulation by forcing steam bubbles downward in the generating tubes acts as a receptacle for heavy suspended solids in boiler feed water supports the superheater tube bank provides a space for moisture to separate from the steam
A The term "separation" as used in oil purification refers to the removal of __________. water from a mixture of oil liquids acid contaminants from oil oil from its additives solids from lube oil
B The unit shown in the illustration is used as the __________. Illustration SG-0025 flash evaporator salt water feed heater combined low pressure feed heater Butterworth feed heater high pressure feed heater
B The upper section of the feedwater heater indicated by "G" in the illustration is used as the __________. Illustration SG-0025 after condenser first stage heater gland exhaust condenser drain cooler
D To prevent blowback when attempting to light off an idle boiler, what statement is true? The boiler fuel oil supply header temperature must be maintained below the pour point of the fuel, the furnace floor should be free of oil, and the furnace should be purged. The boiler fuel oil supply header temperature must be maintained at the temperature necessary to obtain proper atomization of the fuel, the furnace floor should be free of oil, and there should be sufficient combustible gases in the furnace. The boiler fuel oil supply header temperature must be maintained above the flash point of the fuel, the furnace floor should be free of oil, and there should be sufficient combustible gases in the furnace. The boiler fuel oil supply header temperature must be maintained at the temperature necessary to obtain proper atomization of the fuel, the furnace floor should be free of oil, and the furnace should be purged.
B To prevent pulsations from developing in the boiler feedwater lines, the discharge side of a reciprocating feed pump is equipped with a/an __________. feed water regulator air chamber reed valve relief valve
B To properly remove the burner tip nut from the burner barrel, the barrel should be __________. clamped in a machinist's vice on the work bench held by the fixture on the burner cleaning bench fixed in the burner stowage rack removed from the gooseneck before removing the tip nut
C Under EMERGENCY operating conditions with the main feed valve malfunctioning, what should be the proper valve positions for controlling feedwater to the boiler? auxiliary stop-check valve fully open and the auxiliary stop valve regulated by the feedwater regulator auxiliary stop and stop-check valves fully open and the feed pump speed used to regulate the amount of flow auxiliary stop valve fully open and the auxiliary stop-check valve used to regulate the amount of flow auxiliary stop-check valve fully open and the auxiliary stop valve used to regulate the amount of flow
D Under EMERGENCY operating conditions, the proper valve positions for controlling feedwater to the boiler should be the __________. auxiliary stop-check valve fully open and the auxiliary stop valve regulated by the feed water regulator auxiliary stop-check valve fully open and the auxiliary stop valve used to regulate the amount of flow auxiliary stop and stop-check valves fully open and the feed pump speed used to regulate the amount of flow auxiliary stop valve fully open and the auxiliary stop-check valve used to regulate the amount of flow
C Under normal conditions, the rate of heat transfer in a feedwater heater is most greatly affected by the __________. speed of the main feed pump density of the feed water temperature differential between the steam and feed water pH of the feed water
A Under what circumstances would a propulsion steam turbine turning (jacking) gear most likely be used? Warming-through the main turbines prior to maneuvering. While applying a reverse thrust for stopping the shaft. While undergoing astern operations. For additional power while underway.
A Water boxes on main condensers are vented to __________. liberate air pockets and reduce waterside oxidation prevent excessive pressure on tube sheets provide a minimum condensate level in the hot well prevent vapor binding of the circulating pump
B What color smoke may be indicative of a leaking head gasket? blue smoke white smoke black smoke gray smoke
B What could be the cause of water hammer in a steam heating system? filling the auxiliary boiler with cold water steam admitted to a cold pipe filling the auxiliary boiler with hot water draining a sootblower line before cracking the steam supply valve
C What is the heat source for the deaerating feed tank introduced at "E" in the illustration? Illustration SG-0002 High-pressure drains Auxiliary steam Auxiliary exhaust steam Low-pressure drains
A What is the name of the device pictured in the illustration? Illustration SE-0001 Gear type flexible coupling Solid coupling Quill shaft Hydraulic clutch
B What is the name of the nozzle which is associated with the steam drum and is shown in the illustration? Illustration SG-0006 Steam outlet nozzle Feed inlet nozzle Safety valve nozzle Desuperheater outlet nozzle
D What is the normal destination of steam exiting a main feed pump drive turbine? SSTG condensers via the auxiliary exhaust steam line. Main condenser via the auxiliary exhaust steam line. Dearating feed tank via the main feed pump discharge line. Dearating feed tank via the auxiliary exhaust steam line.
D What is the primary reason that idle burners on a boiler be regularly checked to ensure that they do not drip? To prevent slag formation on the furnace floor. To prevent excessive soot buildup on boiler tubes. To prevent excessive fuel consumption. To prevent boiler flarebacks.
C What is the purpose of a rotocap on an auxiliary diesel engine exhaust valve spindle? to close the valve to increase lube oil penetration to the guide to increase valve life to keep the valve cool
B What is the purpose of the item labeled "nozzle" located on the illustrated steam turbine? Illustration SE-0003 Convert the potential energy of the supply steam to mechanical energy. Convert the potential energy of the supply steam to kinetic energy. Convert the kinetic energy of the supply steam to potential energy.  Convert the kinetic energy of the supply steam to mechanical energy.
A What is the purpose of the items labeled "moving blades" located on the illustrated steam turbine? Illustration SE-0003 Convert the kinetic energy of the steam exiting the nozzle to mechanical energy of rotation. Convert the potential energy of the steam exiting the nozzle to mechanical energy of rotation. Change the direction of travel of the steam. Convert the kinetic energy of the steam exiting the nozzle to potential energy.
A What is the purpose of the main steam stop bypass valve? gradually increase the pressure and temperature of the main steam piping when warming up cross-connect two steaming boilers isolate the main steam stop for repairs while steaming supply auxiliary steam when the main steam stop is closed
B What is the source of heat for a second stage feed heater (deaerating feed tank) while a vessel is underway under full load? High-pressure bleed steam Auxiliary exhaust steam Intermediate pressure bleed steam Low-pressure bleed steam
A What is the source of heat for a third stage feed heater (if fitted) while a vessel is underway under full load? High pressure bleed steam Auxiliary exhaust steam Low pressure bleed steam Intermediate pressure bleed steam
B What may be an indication of white smoke coming from the exhaust of an auxiliary diesel engine? worn piston rings cracked cylinder liner or head not enough air late injection timing
B What may be an indication that you have a leaking injection nozzle? low exhaust temperature and high firing pressure high exhaust temperature and low firing pressure high exhaust temperature and low compression pressure low exhaust temperature and high compression pressure
A What method of burner light-off presents the greatest danger to boiler flareback? Lighting-off from hot brick work. Lighting off with a torch. Lighting off from an adjacent burner. Lighting-off with an igniter.
B What size drill is used to drill the orifice of the sprayer plate of the illustrated atomizer? Illustration SG-0022 number 08 drill bit number 38 drill bit letter T drill bit The drill bit size cannot be determined from the available information.
B What statement concerning the operation of a propulsion steam turbine turning (jacking) gear is true? The turning gear is used to prevent turbine rotor distortion while warming-through only. The turning gear is never used while cooling since distortion is not an issue when cooling. The turning gear is used to prevent turbine rotor distortion while warming-through or while cooling, since distortion is an issue when warming-through or cooling. The turning gear is used to rotate the turbines, gearing, and shaft periodically when the main engines are secured only. The turning gear is never used to prevent turbine rotor distortion. The turning gear is used to prevent turbine rotor distortion while cooling only. The turning gear is never used while warming-through since rotor distortion is not an issue when warming-through.
C What statement is true concerning a propulsion steam turbine turning (jacking) gear? The jacking gear splined clutch is associated with the low pressure turbine second reduction pinion. The jacking gear splined clutch is associated with the low pressure turbine first reduction pinion. The jacking gear splined clutch is associated with the high pressure turbine first reduction pinion. The jacking gear splined clutch is associated with the high pressure turbine second reduction pinion.
A What statement is true concerning the illustrated boiler saddle, support and foot? Illustration SG-0015 The illustrated foot is the sliding foot located underneath the front of the water drum. The illustrated foot is the sliding foot located underneath the rear of the water drum. The illustrated foot is the fixed foot located underneath the front of the water drum. The illustrated foot is the fixed foot located underneath the rear of the water drum.
A What statement is true concerning the illustrated steam turbine bearing lubricating oil flow and temperature indicating device? Illustration SE-0010 The thermometer indicates the temperature of the oil leaving the bearing and the sight glass indicates the flow of the oil leaving the bearing as well. The thermometer indicates the temperature of the oil entering the bearing and the sight glass indicates the flow of the oil entering the bearing as well. The thermometer indicates the temperature of the oil entering the bearing and the sight glass indicates the flow of the oil leaving the bearing. The thermometer indicates the temperature of the oil leaving the bearing and the sight glass indicates the flow of the oil entering the bearing.
B What type of bearing is shown in the illustration? Illustration SE-0017 Single piece bushing Precision insert, split-half journal bearing Tilting pad journal bearing Precision-insert, split-half thrust bearing
C What type of thrust is the bearing shown in the illustrated steam turbine shaft bearing designed to absorb? Illustration SE-0007 Combination of radial and axial thrust Radial thrust only Axial thrust only Perpendicular thrust only
B When a boiler is removed from service for an extended period, why should the firesides be thoroughly dried after water washing? Prevent flarebacks on lighting off. Reduce the probability of corrosion. Reduce the possibility of thermal spalling. Prevent cracking of the brickwork.
C When a sudden increase in pressure occurs in a forced lubrication system, you should check for a __________. clogged lube oil pump suction high lube oil sump level loss of oil flow across one of the bearings ruptured tube in the lube oil cooler
B When blowing tubes on an integral superheat boiler fitted with an economizer, the operating sequence to be followed is recommended by the manufacturer. What section of the boiler is generally blown first and last? Superheater section Economizer section Generating tube bank section Screening tube section
B When blowing tubes, what is the determining factor in deciding how many revolutions of rotation of a soot blower element are required? When the scavenging air indicator shows clear. When the smoke indicator (periscope) shows clear. Soot blower elements are never rotated more than one revolution. When the steam supply manifold drains blow clear.
A When cleaning boiler fuel oil atomizer parts, what type of cleaning tool should NEVER be used? Steel tools Copper tools Wood tools Brass tools
B When cleaning the inside surfaces of the boiler tubes of a water-tube boiler with a powered rotary brush, the brush should be kept in motion to __________. prevent it from seizing avoid internal tube damage reduce wear to brush bristles reduce tube pitting
C When monitoring steam propulsion plant lubricating oil temperatures while underway, what represents the temperature rise across an individual bearing? The temperature difference between the lube oil cooler oil inlet temperature and the lube oil cooler oil outlet temperature. The temperature difference between the bearing lube oil outlet temperature and the lube oil cooler oil inlet temperature. The temperature difference between the bearing lube oil outlet temperature and the lube oil cooler oil outlet temperature. It is NOT possible to determine individual bearing temperature rises for lubricating oil.
C When operating with the auxiliary feed line, feedwater flow is controlled __________. automatically by the economizer bypass manually by adjustment of the auxiliary feed water regulator spring setting manually by throttling the auxiliary feed stop-check valve automatically by the main feed water regulator
C When performing a bottom blow on a boiler, what valve is spun open quickly? All valves are to be opened slowly. Blow down valve (first valve closest to water drum). Guarding valve (second valve away from the water drum). Skin valve (last valve prior to overboard opening).
B When performing a periodic gauge glass blow down to insure that the glass is free and operating correctly, what action is performed first? Close the bottom shut off valve and open the drain valve to clear out the bottom connection to the gauge glass. Close the top shut off valve and open the drain valve to clear out the bottom connection to the gauge glass. Close the bottom shut off valve and open the drain valve to clear out the top connection to the gauge glass. Close the top shut off valve and open the drain valve to clear out the top connection to the gauge glass.
D When placing a cleaned and properly made up atomizer in the spare atomizer rack, how should the atomizer be stored? The atomizer should be stored vertically with the atomizer cap nut pointing upward. There are no specific storage requirements for spare atomizers. The atomizer should be stored horizontally with the atomizer cap nut pointing in either direction. The atomizer should be stored vertically with the atomizer cap nut pointing downward.
D When raising steam on an idle boiler and the steam pressure has risen to about 5 pounds more than the pressure of the boiler already on the line, you can __________. increase the boiler firing rate close the superheater vent close the air cock put the boiler on the line
A When removing a piston, what is a good indication that your lube oil is good and supplied in the proper amount? liners and piston rings have a bright surface and rings are free liners and piston rings have a dull grayish appearance and rings are free liners and piston rings have a dull grayish appearance and rings are tight liners and piston rings show an accumulation of lube oil deposits and rings are tight
A When reviewing the engine log on a steam ship, you notice a lower than normal feedwater temperature, high furnace pressure and higher than normal superheater temperature. Which of the following could be a possible cause? Excessively fouled boiler economizer gas side. Excessively fouled superheater gas side. Too much excess air. Excessively fouled water screen tubes.
C When the plunger of an injection pump of an auxiliary diesel engine is stuck, it may cause which of the following conditions? injector failure excessive fuel consumption failure of the cylinder to fire engine shutdown
C When transferring fuel from a fuel storage tank to a fuel oil settling tank, what is the best protection against an oil spill? Stopping the transfer of fuel when the fuel oil settling tank high level alarm sounds. Stopping the transfer of fuel based on a time estimate of previous transfers. Sounding the settling tank more often as the level rises and stopping the transfer before completely filling the tank. Sounding the settling tank less often as the level rises and stopping the transfer when the tank is completely filled.
C When used for the purpose of controlling the temperature of main steam, what is the source of water and steam for the illustrated device? Illustration SG-0013 The source of water is feed water and the source of steam is the desuperheater outlet. The source of water is condensate and the source of steam is the superheater outlet. The source of water is feed water and the source of steam is the superheater outlet. The source of water is condensate and the source of steam is the desuperheater outlet.
D When you hear an exhaust gas turbine of an auxiliary diesel engine surge it sounds like it is "barking." What is the likely cause of a turbine "barking?" worn bearings damaged blades insufficient lube oil supply a dirty intake air filter
B Where do fuel oil vapors tend to accumulate in an engine room? In the upper engine room spaces, especially in the fidley. In the lower engine room spaces, especially in the bilges. At the point in the engine room where the vapors were initially formed. Oil vapors tend to distribute throughout the engine room evenly.
D Which boiler casualty is considered to be the most serious? High water level Low feed pressure Loss of feed suction Low water level
D Which of the actions listed should be carried out immediately after securing the fires in one boiler of a two boiler ship? Open the air registers wide to cool the furnace. Secure the main feed pump. Drain and refill the boiler with cold water. Relieve all fuel oil service pressure to that boiler.
D Which of the condensers listed is cooled by sea water? Gland exhaust condenser Air ejector condenser Vent condenser Main condenser
B Which of the conditions listed could prevent a centrifugal condensate pump from developing its rated capacity? Flooding of the main condenser hot well. Closing the water seal line to the packing gland. Operating the pump with a positive suction head. Venting the pump to the vacuum side of the condenser.
A Which of the conditions listed should be immediately reported to the engineering officer on watch? Oil in the drain inspection tank. Water trickling in through the stern gland. Steam leaving the vent of the gland exhaust condenser. Lube oil passing through the bull's eye of the gravity tank overflow line.
D Which of the conditions listed would indicate a dirty fuel oil strainer? Decreasing pressure drop across the strainer Decreasing fuel oil temperature Dirt and sediment deposits in the atomizers Decreasing fuel oil pressure at the burner manifold
D Which of the devices listed is commonly used to compensate for the expansion and minor misalignments occurring between the main turbine rotor and the reduction gear? Sliding sleeve Quill shaft Expansion gear Gear type flexible coupling
C Which of the devices listed is found on an LP main propulsion steam turbine casing? Duplex set of relief valves HP turbine bypass valve Sentinel valve Sliding beam
B Which of the filter/strainer units listed permits you to clean the element while leaving the system on the line? Simplex Duplex Canister Bypass
D Which of the following conditions is indicated by oil flowing through a lube oil gravity tank overflow sight glass? Excessive oil is stored in the gravity tank. Insufficient oil is being pumped to the gravity tank. Turbine bearing failure has occurred. Sufficient oil flow is being supplied to the gravity tank.
B Which of the following is the purpose of the steam drum in a D-Type marine boiler? maintains circulation by forcing steam bubbles downward in the generating tubes provides a space for moisture to separate from the steam acts as a receptacle for heavy suspended solids in boiler feedwater supports the superheater tube bank
D Which of the following labeled items of the illustrated air register and burner assembly represents the means by which the flame may be visually checked for color and condition? Illustration SG-0016 2 4 10 14
D Which of the following labeled items of the illustrated air register and burner assembly represents the mechanism for operating the register air doors? Illustration SG-0016 2 4 6 12
B Which of the following labeled items of the illustrated air register and burner assembly represents the poke hole cover and would be temporarily removed to poke through a clinker? Illustration SG-0016 12 13 14 15
D Which of the following labeled items of the illustrated section of boiler refractory represents the insulating block? Illustration SG-0003 1 3 4 7
A Which of the following labeled items of the illustrated section of boiler refractory represents the insulating brick? Illustration SG-0003 1 3 4 7
C Which of the following methods is used to lubricate main propulsion turbine reduction gears? Oil is pressure fed through internal drilled passages which force oil to the gear's periphery. Oil rings in channels outside the gears dip into oil in the sump and carry it to the gear teeth. Oil is sprayed through nozzles at the point of gear mesh. The gears run through an open oil sump and oil is carried along on the gear teeth.
A Which of the following modes of heat transfer does NOT require any physical contact between a warmer and a cooler substance? Radiation Conduction Lamination All of the above.
A Which of the following precautions should be taken prior to lighting off a boiler? Purge the furnace of combustible gases. Bottom blow the mud drum. Close the air register. Secure the main steam line drains.
D Which of the following statements about boilers is correct? Loss of water will not harm a boiler if the water level can be restored. No boiler will continue to generate steam after the fires are secured. The water level in a properly operated boiler will not shrink or swell. A hot boiler will continue to generate steam after the fires are secured.
C Which of the following statements about gravity type lube oil systems is correct? The discharge from the gravity tanks flows to the lube oil pump suction. Any lube oil pump failure causes immediate damage to turbine bearings. Gravity tank overflow lines are lead directly to the lube oil sump. Gravity tanks are fitted with an overflow alarm.
C Which of the following statements is correct concerning heat transfer? Heat is given off from a high temperature region known as a heat sink.  Heat transfer rate is affected most by the size of the heat sink involved. Heat transfer rate is affected most by the temperature difference between the heat source and the heat sink. Heat transfer by radiation will occur only by mass motion of a fluid substance.
C Which of the following statements is correct concerning the operation of the level or drain regulator associated with the feed water heater shown in the illustration is correct? Illustration SG-0025 The regulator controls the volume of condensate leaving the gland exhaust condenser. The regulator maintains the flow of steam into the first stage heater of this unit. The regulator controls the level of condensate collected in the drain cooler section. The regulator controls the flow rate of condensate leaving the feed water outlet.
B Which of the following types of bearings are used as line shaft bearings? Rigidly mounted, radial sleeve Ring-oiled, Babbitt-faced, spherical seat, shell Segmental, pivoted-shoe thrust tapered roller, split type radial
D Which of the labeled items attached to the top of the illustrated steam drum represents the means by which saturated steam is delivered to the superheater? Illustration SG-0011 A H P D
C Which of the labeled items within the illustrated steam drum helps prevent surging of water within the drum as a vessel pitches? Illustration SG-0011 C L M N
C Which of the labeled items within the illustrated steam drum represents the last line of defense in helping to prevent moisture carryover into the saturated steam leaving the steam drum? Illustration SG-0011 M B C N
A Which of the labeled items within the illustrated steam drum represents the means by which feed water is introduced into the steam drum? Illustration SG-0011 B E J L
B Which of the labeled items within the illustrated steam drum represents the means by which floating impurities are removed from the steam drum? Illustration SG-0011 B E J L
D Which of the labeled items within the illustrated steam drum represents the means by which water treatment chemicals are introduced into the steam drum? Illustration SG-0011 B E J L
C Which of the listed components would be considered the dividing line separating the condensate system from the feed water system? Main condenser Main air ejectors Deaerating feed tank Boiler drum
A Which of the listed conditions aids in directing gland leakoff steam from the low pressure propulsion turbine to pass through the gland exhaust condenser? The use of a gland exhauster fan. Steam pressure from the low pressure turbine. Steam pressure from the high pressure turbine. Compressed air in the air pilot.
A Which of the listed order of valves represents the proper installation of the main feedwater supply line to a marine propulsion boiler? Stop-check, regulator, stop Regulator, stop, stop-check Stop-check, stop, regulator Stop, regulator, stop-check
A Which of the pumps listed operates at constant speed and delivers water to the deaerating feed tank at a nearly constant pressure? Main condensate pump Main feed booster pump Main circulating pump Main feed pump
C Which of the valves listed should be closed before lighting off a boiler? Superheater vent valve Superheater drain valve Economizer drain valve Air cock valve
A Which statement is true concerning drain inspection tanks? Inspection tanks provide for a visual examination of condensate which could be oil contaminated. They collect condensate from the cargo tank heating coils only. They are discharged to the condensate system just forward of the feed pump. Inspection tanks collect all HP drains.
C Which statement is true concerning the operation of item 12 on the illustrated air register and burner assembly? Illustration SG-0016 The air register doors should be fully open for an individual burner that is lit and throttled for an individual burner that is idle. The air register doors should be throttled for an individual burner that is lit and fully closed for an individual burner that is idle. The air register doors should be fully open for an individual burner that is lit and fully closed for an individual burner that is idle. The air register doors should be fully open for all burners whether lit or not and fully closed for all burners only when the boiler is idle.
A Which statement is true concerning two-stage air ejector assemblies? The steam/air mixture from the main condenser is discharged by the first stage air ejector to the inter condenser. Steam to the after condenser is condensed and returned to the main condenser via the loop seal. Air is removed from the condensate as it passes through the tubes. The first stage air ejector takes suction on the second stage to increase vacuum.
C Which statement listed represents a vital function of the main condenser? Condensing of the exhaust steam from the main feed turbine pumps. Cooling of the exhaust steam from the auxiliary exhaust system before it enters the deaerating The recovery of feed water for reuse. Storage of feed water for immediate use in the boilers.
B Which steam plant watch operating condition requires priority attention over the other conditions listed? Vapor issuing from deaerating heater vent High level main condenser Low sewage tank chlorination section level High lube oil storage tank level
B Which system should be used when required to raise the water level in an idle boiler? Main condensate system Main feed system Auxiliary condensate system Chemical feed system
A While a vessel is underway, one of the FIRST indications of the failure of the gland leakoff exhaust fan motor is __________. excessive steam leakage at the turbine glands increased turbine exhaust temperature water knock on the turbine gland steam header loss of vacuum at the turbine
D While a vessel is underway, the low-pressure turbine high-speed pinion of the main reduction gears is damaged. After the damaged high-speed pinion is removed and the main engines are placed back into operation, what would be the speed and direction capability of the main propulsion engines? Reduced speed astern and full speed ahead Reduced speed ahead and full speed astern Reduced speed astern only Reduced speed ahead only
A While a vessel is underway, which of the conditions listed would indicate a leak in the lube oil cooler? Excessive lube oil consumption. Contamination of the lube oil. Excessive water discharge rate from the lube oil purifier. Corrosion of the journals and bearings.
C While fires are lit in a boiler, in terms of uptake dampers and air register doors, what conditions must be met? All uptake dampers should be throttled according to the firing rate, all air register doors on lit burners should be throttled according to the firing rate, and all air register doors on idle burners should be closed. All uptake dampers should be throttled according to the firing rate, all air register doors on lit burners should be wide open, and all air register doors on idle burners should be closed. All uptake dampers should be locked open, all air register doors on lit burners should be wide open or throttled, and all air register doors on idle burners should be closed. All uptake dampers should be locked open, all air register doors on lit burners should be throttled according to the firing rate, and all air register doors on idle burners should be open.
C While making your rounds, you notice the main lube oil temperature to be higher than normal. To remedy this situation, you should __________. open the lube oil cooler seawater inlet valve wider speed up the main lube oil pump increase the opening of the lube oil cooler seawater discharge valve throttle in on the lube oil cooler seawater discharge valve
B While raising steam on a cold boiler, the air cock is to be closed after __________. the economizer drain is closed steam has formed and all air is vented all burners have been lit and firing normally the boiler is cut in on the line
A While steaming underway the second engineer reports a high superheater outlet temperature. Which of the following could be a possible cause? Fouled screen tubes. High feedwater temperature. Plugged superheater tubes. Dirty superheater tubes.
B While underway on a steamship, the main condenser is operating under a 28.09 "Hg vacuum gauge. According to the illustrated properties of saturated steam table, how much condensate depression would there be if the condensate temperature leaving the main condenser hot well is 96.0F? Illustration SG-0026 1.83F 2.24F  8.71F  70.15F
D While underway the engineer on watch reports the vacuum in the main condenser has been gradually decreasing. Which of the following could be a possible cause? Low level in the boiler steam drum. Low sea water temperature. High level in the DC heater. High level in the condensate hot well.
B While underway, vacuum in the main condenser is primarily caused by the __________. main air ejector condensing of the exhausting steam suction drawn by the condensate pump after condenser loop seal
B While vacuum is being raised on the main unit and the turbine warmed, condensate is recirculated to the main condenser to __________. cool the main condenser shell for better vacuum ensure the condensation of air ejector steam provide a condenser vacuum seal maintain a proper DC heater water level
B Who must supervise the setting of a boiler safety valve? Any licensed engineer Inspector of the US Coast Guard Master Chief Engineer
C Why are two fuel oil heaters "E" provided in the fuel oil system shown in the illustration? Illustration SG-0009 To allow fuel of different temperatures to be provided to be provided to each boiler. Two heaters are necessary when both boilers steam at full load. To provide a backup in case one of the heaters becomes inoperable. Each heater supplies fuel to a different boiler.
C Why should the fuel oil be recirculated before lighting off a cold boiler on heavy fuel? To allow the fuel strainers to thoroughly clean the fuel. To allow fuel pressure to buildup gradually. To heat the fuel enough for proper atomization. To ensure that all water is removed from the fuel.
B Why would superheated steam be used in a propulsion turbine instead of saturated steam? Higher pressure available than saturated steam. Greater heat energy available per pound of steam. Less specific energy available per pound of steam. Lower required specific volume than saturated steam.
C Your auxiliary diesel engine has an air start system with a Bendix drive. You have the air cocks open to roll over the engine. You push the start button and nothing happens. What is the FIRST thing that you should suspect? the air tank needs blown down the engine needs prelubed the relay valve is sticking a cylinder is filled with water
D Zincs are installed in the main and auxiliary condenser water boxes to __________. prevent air pockets prevent scaling reduce turbulence reduce the effects of electrolysis