Machinist's Mate (MM) Advancement Practice Test

These questions are part of the practice quiz. Start practicing

• During a serious contamination incident, at what interval should boiler samples be drawn?
• Which publication covers pollution control procedures?
• For optimal boiler performance, when should you assess the condition of the watersides?
• In a pneumatic transmitter, computing and comparison can be accomplished by which of the following methods?
• What type of ruptures are typically caused by insufficient steam or water flow?
• What portion of the steam drum contains a manhole for access to the drum for cleaning, inspection, and repair?
• Which types of steam traps are classified as mechanical traps?
• From which two parts of an outside micrometer do you obtain readings?
• Outside dovetail type turbine blading is used with what type of entry?
• What does a guide ring primarily control in a nozzle reaction safety valve?
• Dies are primarily used to cut which type of threads?
• What type of heat transfer is generated by the sun as it heats the earth without heating space?
• Superheater protection steam is taken from which system?
• Where is the pre-close out inspection of the main reduction gear recorded?
• What percent of the operating pressure must the hydrostatic test pressure be set at for checking rerolled tube seats for leakage?
• What type of cracking is caused by stresses from normal expansion and contraction in a burner front?
• What is the most common cause of fireside grooving in boiler tubes?
• What is used to seal the nozzle diaphragm and the rotor on an SSTG?
• What is an essential action after a boiler has been taken offline for maintenance?
• What does the term radial flow refer to in steam operations?
• What type of steam trap relies on the variable density of condensate?
• What is mechanical energy in transition called?
• Once the boiler purge is complete, what is the time frame in which fires must be lit?
• What type of caliper is known for providing very accurate measurements over a large range?
• The term "high pressure boiler" refers to a boiler operating at what minimum pressure?
• What is the requirement for installing locks on main reduction gear panels and plates?
• What is the primary function of the steam drum swash plates?
• What function does the safety shutoff device serve in main propulsion boilers?
• What is the term for the longest movement possible between the spindle and anvil in a micrometer?
• What does the term "steaming hours" refer to?
• How are powered conveyors typically configured?
• How is the propeller and shaft supported outside the hull of the ship?
• Which damage is indicated by abnormal cratering at the ends of tubes?
• What is a distinct feature of impulse steam traps compared to others?
• What is typically checked during the maintenance of auxiliary turbines?
• In automatic boiler controls, along with steam pressure and airflow, what is the third loop associated with the automatic boiler control system?
• What is the role of the Gas Free Engineer?
• What is the primary function of a thrust bearing in a main engine?
• In which type of tubes are thick-lipped ruptures most commonly found?
• Which temperature indicates a hot main condenser?
• The lube oil cooler should be bypassed on an operating auxiliary turbine until the discharge oil temperature reaches what?
• What function does the trick wheel serve in a steering system?
• How much desiccant is recommended for a proper dry lay-up per 1,000 gallons of cold water capacity?
• What is the only authoritative source of information on the boiler system on any ship?
• What is the purpose of the ratchet stop on an outside micrometer?
• What must be signed by the repair activity representative to indicate satisfaction with the tag-out?
• Why are extraction valves fitted on some LP and HP turbines?
• Which person is ultimately responsible for the safety of a space that may have gas contamination?
• Which chemical can be used if sodium metasilicate is unavailable for boil-out?
• To what system or equipment do turbine casing drains normally drain?
• What type of turbine blading is used for installation in circumferential grooves?
• What does a red sealant on lagging cloth indicate?
• What is the minimum percentage of tooth contact required for satisfactory operation of reduction gears with a 125 k-factor or less?
• Which periodicity code indicates a situation requirement check?
• Which type of relays on a general regulator combustion control system prevent the master demand signal from bleeding out the range?
• Which dishwashing machine is fully automatic?
• What is a key consideration when selecting flexible hoses for burner leads?
• What should flexible hose be replaced with to enhance safety?
• Which authority must grant permission to change safety valve settings?
• Which index lists onboard ships drawings and blueprints?
• What causes the ram to move on an electrohydraulic steering unit?
• What document provides the most current listing of Maintenance Index Pages (MIPs)?
• What method of measurement is used to determine radial seal wear?
• Which reference delineates proper tag-out procedures?
• The entire furnace deck must be renewed when the firebrick reaches how many inches for anchored decks?
• Which type of check is indicated by a PMS periodicity code of "R"?
• Sensible heat is defined as?
• What type of measurement does an outside micrometer provide?
• Which type of tubes are normally found to contain thermal cracks?
• Which maximum furnace temperature is boiler refractory firebrick designed to withstand?
• What occurs in the boiler due to overheating of tubes or from stresses developed during installation?
• Boilers must be inspected for strength and integrity at least once every how many years?
• How is desiccant lay-up monitored after the lay-up is established?
• What information is contained in the liquid load plan (draft report)?
• A steam blanket lay-up shall be monitored at what frequency by the responsible watch stander?
• When sending reports to higher authorities, what additional document is sent along with the report to the Type Commander?
• At what temperature should the journal bearing be closely monitored to avoid overheating?
• Which tool is specifically used to resurface handhole seats?
• What is defined as the feedwater as it enters the boiler feed drum?
• How often is the Current Ships Maintenance Project (CSMP) verified and updated?
• How often must the main reduction gear dehumidifier system be checked for correct operation?
• In what order are drawings in the Ship Drawing Index (SDI) listed?
• Who does the Engineering Officer of the Watch (EOOW) report to?
• An excess of which substance was probably used in mixing the material during installation of a castable burner if the front breaks up after very little use?
• What is the normal length of a tapered plug?
• Which of the following is an important aspect of daily log approval by the Engineer Officer?
• Low pressure packing should never be used to pack which type of steam valves?
• What type of burner front cracks are caused by normal expansion and contraction?
• What is a key factor that affects the effective functioning of double helical gears?
• How many hours are necessary to bring a cold boiler online?
• What role do waterwall tubes primarily serve in a steam generation system?
• How is the total heating surface of a naval boiler defined?
• How do steam separators separate the steam and water mixture?
• What is the purpose of confining heat to the firebox using refractory material?
• How is the minimum fuel oil pressure set on a general regulator?
• Volume 3 of which publication contains general guidelines for engineering casualty control?
• At what pressure below the lowest safety valve setting are boiler safety valve gags placed on safety valves?
• What should be done if a boiler firing rate must exceed the maximum limit?
• What does a valve marked 2000 WOG indicate?
• What is the temporary distortion of the SSTG rotor after multiple start/stop episodes called?
• What material are the disks and seats of valves in high temperature steam systems surfaced with?
• What is defined as the quantity of heat required to raise the temperature of 1 gram of water through 1 degree on the Celsius scale?
• Which type of deposits act as insulators and reduce the heat transfer across any surface?
• How long must castable refractory be air cured prior to being baked out?
• Which document would cover special instructions from the Chief Engineer during night watch hours?
• When is desiccant replacement necessary in the lay-up procedure?
• If lumps are discovered in a newly opened bag of castable, what action should be taken?
• What is one critical function of the governor in an SSTG?
• Who is responsible to the CDO for the inport Fire Party?
• Which Personnel Qualification Standards (PQS) section is termed the 400 series?
• What is the most common type of tube perforation?
• Why is a ball check valve installed in the bottom cutout valve of the gage glass?
• What component is essential for connecting the boiler's steam drum to the steam piping?
• Where can detailed information on the selection of insulation, lagging, and fastening be found?
• What component assists in the proper mixing of air and fuel oil spray in a combustion system?
• What action should be taken before entering port regarding boiler tubes?
• What type of joints use packing material?
• Which term is used to describe openings in a tube not associated with tube enlargement?
• What is the significance of spacing refractory anchors correctly?
• What is the main purpose of a blowdown process in boiler operation?
• What are the three components of the Engineering Operational Sequencing System (EOSS)?
• What is the desired range of steam atomization temperature?
• How often should air compressor relief valves that cannot be tested by hand be evaluated?
• The Kingsbury thrust bearing shoes serve what purpose?
• What determines the tightness of a valve piston?
• Which tools are often employed for preparing a Formal Work Package?
• How many years are PMS Quarterly schedules kept on file?
• What must the lube oil temperature be on an SSTG prior to bringing it up to operating speed?
• Lowering the nozzle ring on a nozzle reaction safety valve affects which additional factor?
• What material should be used to fill gaps exceeding 1/4 inch on two sidewall tubes?
• Which ship's publication is used to combat Class B fires in propulsion spaces?
• Who designates the fund codes that may be used by each ship and under what circumstances they may be used?
• What is the purpose of the boiler air casing in terms of boiler operation?
• At what condition does torsional critical speed typically occur in a Marine Reduction Gear (MRG)?
• If control air pressure is lost, to which position will the fuel oil control valve always fail?
• How long must hydrostatic pressure be maintained before inspecting pressure parts?
• What is sludge in boiler water primarily composed of?
• What is the minimum temperature at which boiler tube expanders should operate for optimal performance?
• Dishwashing machines are classified into how many groups?
• How is the operation of bellows type steam traps controlled?
• What is the minimum pressure required for nitrogen blanket lay-up?
• What is the purpose of an atomizer in an oil boiler?
• Fireside thinning is primarily associated with which type of corrosion?
• What is the purpose of backflushing heat exchangers?
• Which type of tubes are NOT typically used in a D-type boiler?
• What action must be taken if the safety valves of a boiler cannot be adjusted to lift within the prescribed range?
• If 1" or 1.25" tubes in the main generating bank are married, the tube joints must be tested at which percent of boiler steady state pressure and satisfactorily pass hydro in order for no corrective action to be taken?
• When the ship is within 1 hour of port or anchorage and maintaining standard speed, the reduction gear lube oil temperature is lowered to what?
• Adjusting the fuel oil header pressure during a white smoke condition can lead to what risk?
• Who approves operating logs on a daily basis?
• What usually characterizes the appearance of tool marks on boiler tubes?
• Which type of failure is indicated by a hot spot on the burner air register on an operating boiler?
• When should safety valve gages be placed on the boiler before setting safeties?
• What is the role of the engineering officer in a naval boiler system?
• The Oil Pollution Act of 1961 prohibits the discharge of oil or water having oil in it into the sea within how many miles of any land?
• How many gallons of fuel is the system aligned to draw off when stripping fuel tanks?
• What is a primary characteristic of a relief valve?
• What is the maximum final distillate salinity indicator reading?
• Which Quality Assurance (QA) form is used for testing and inspection?
• What causes the initial lifting of a safety valve?
• What term is associated with a deficiency of air and excessive vibration of the boiler?
• How often must the cleaning handle be rotated as well as cleaning performed on knife edge type strainers while they are online?
• How can damaged labyrinth packing be repaired when replacement is not possible?
• What is the saturation pressure for water at a saturation temperature of 212 degrees F?
• What range should the feedwater hydrazine level be maintained in ships with Chelant continuous injection systems?
• In the event of lost control air pressure, which pressure will the main feed pump control valve fail to?
• Which micrometer type is used to measure holes or recesses?
• Which valve type is light in weight and takes up less space than a gate or globe valve?
• Why is it important to ensure tubes project sufficiently into drums or headers?
• What method is recommended for removing hard fouling from heat exchangers?
• A boiler that provides some means of controlling the degree of superheat independently of the rate of steam generation is said to have?
• Who is responsible for directly supervising the preparation of a Formal Work Package for the equipment they are in charge of?
• How many years must Engine room/Fireroom operating logs be retained onboard?
• What is the primary goal of boiler water treatment?
• How many levels, in accordance with PMS, is boiler flex testing measured in?
• How are atomizer spray plates orifices checked for proper size?
• Prior to thrust bearing measurements on the main engine, how long should the turbine be at ambient temperature with throttles shut?
• What device is installed on the main engine to prevent the leakage of steam from the engine?
• How often are boiler firesides cleaned?
• When warming up steam assisted atomizers, how long is the recommended warm-up time with steam prior to light-off?
• What action occurs during the formation of slag on the brickwork due to seawater contamination?
• Which type of operation is considered the safest for engineering plant alignment?
• Boiler safety valves must be lifted by a hand easing gear how many psi below operating pressure?
• During boiler light off, what PPE must the torchman wear?
• What function does the surface blow pipe in the steam drum serve?
• How are handhole seats properly cleaned?
• When must a constant be re-established on a main engine bearing?
• Which size holes are drilled in the front and rear economizer vestibules to alleviate gas leaks?
• Who determines the combination of boilers and burners to be used that gives the greatest plant efficiency while considering safety and military requisites?
• What is the maximum allowable safety valve lifting pressure tolerance on boilers with a steam drum pressure between 711-1410 psi?
• Which section complements Fundamentals, Systems, and Watch-standing in the Personnel Qualification Standards (PQS)?
• What three types of anchor windlass will you find onboard a ship?
• What principle is used to describe the efficiency of a crane's load handling capabilities?
• In a three-element feedwater control system, which component develops a pneumatic signal proportional to the actual boiler water level?
• What type of inspection is performed bi-weekly on a secured reduction gear?
• What is considered a stage on an impulse turbine?
• What provides detailed procedures for performing maintenance requirements and specifies who, what, how, and with which resources a requirement is to be accomplished?
• Which NAVSUP form is utilized on mechanized (automated) ships?
• What effect does a blown diaphragm in the fuel oil characterizing relay have on the fuel oil header pressure?
• Why are naval boilers laid-up when idle for more than 24 hours?
• Which type of valve opens automatically when the pressure in the line becomes too high?
• What should be checked to ensure proper boiler operation?
• How is the principle of the conservation of energy stated?
• What is one method used in wet lay-up to prevent corrosion?
• What percentage of boiler full power capacity is boiler overload capacity normally?
• What is the effective loading pressure range on a general regulator combustion control system?
• What is the lube oil cooler outlet temperature maintained at?
• What are the two major parts that make up the electrohydraulic steering unit?
• Which work center receives and files the PMS feedback report 4790/7B green copy?
• Is it permissible to use shore steam for steam atomization?
• What type of seat does a butterfly valve have?
• What type are Navy electrohydraulic winches classified as?
• Deaerated feed water used in hot deaerated backfill lay up shall meet what dissolved oxygen limit?
• When warming up steam assisted atomizers, how long should you allow for warmup with steam before light off?
• What component is installed between the inner and outer casings of the boiler to facilitate water flow?
• Bacteria in the water is maintained by what?
• If oil spray nozzles on reduction gears become clogged, what corrective action should be taken?
• Who has the authority to authorize the dismantling or removal of any MRG casing or its access openings?
• What is the main purpose of the Main Space Fire-Fighting Doctrine?
• What will increase in boiler water due to an excessive amount of hydroxyl ions?
• What is the purpose of the desuperheater in a boiler system?
• The low pressure turbine element is normally defined as what type of turbine?
• What are the 5 wet lay-up methods?
• What is typically used to isolate and secure various components in a boiler system?
• What is a primary function of auxiliary boilers on vessels?
• What refractory material is used for the innermost layer of the firebox furnace?
• What are the two types of conveyors typically used aboard ships?
• What does the acronym AEL stand for?
• What is the purpose of the boiler air cock valves in main propulsion boilers?
• Why is a prior to light-off sample not necessary on a freshly filled and treated boiler?
• What publication outlines the required disposal methods for bilge water contaminated with hydrazine?
• What is the mode of heat transfer by which heat flows from a hotter to a colder substance through physical contact?
• What are the two primary effects that the flow of heat has on a substance?
• Lowering the adjusting ring on a huddling chamber safety valve when setting boiler safety valves will decrease blowdown and raise what?
• To what percent of rated load are cranes designed to withstand at no speed?
• What is the primary purpose of creating pressure in the economizer vestibules?
• While in port, how often must the secured reduction gear be rotated with lubrication?
• What type of plug is utilized to seal a drum or header tube hole if replacement tubes are not available?
• Which type of winch is primarily used for anchoring purposes?
• How long is the Engineering Log held on board?
• How should a damaged auxiliary turbine blade be removed when reblading is not feasible?
• Which tubes do not generate steam during high firing rates?
• A propeller that vibrates at its natural frequency is often characterized by which term?
• What is the required pressure of compressed air when using it for light off?
• What is the minimum lube oil temperature to the main engine before it is allowed to be jacked over?
• Control systems for naval air compressors are primarily which type?
• Measuring, comparing, computing, along with what else comprise the 4 basic things any control system must perform?
• What device is installed on main engine thrust bearings to indicate flow?
• Which document contains a numerical listing of outstanding deficiencies for all work centers aboard ship?
• What does the acronym CDO stand for in the context of engineering operations?
• What is the minimum pressure required for a nitrogen blanket lay-up?
• What is the consequence of not inspecting overflow line valves as required?
• What is used to keep a record of defective boiler tubes and renewed tubes?
• Which form must be filled out if a problem arises with a piece of machinery that is beyond the repair capability of the ship's force?
• What are the four classifications of boiler tube damage?
• On a D-type boiler, where is the superheater located?
• What safety consideration is vital when operating a boiler system?
• What consequence arises from a failure in the airflow transmitter in the context of a steam plant?
• What could be an indicator of moisture contamination in castable fireclay?
• What is steam that has been heated above its saturation temperature called?
• What set point is designed to maintain in a 600 psi steam plant's automatic combustion control system?
• What two processes are commonly used to harden gear elements?
• What is the smallest percentage of gas (vapor) that will make an ignitable mixture called?
• The required bell when belling boiler tubes larger than 2 inches OD is not less than 1/8" and not more than how many inches?
• What is the maximum time limit for a steam blanket lay-up?
• Who determines the combination of boilers and burners for optimal efficiency?
• What term is defined as the lowest temperature at which a liquid gives off sufficient vapor to form a flammable mixture with air above the surface?
• Which PMS schedule displays the planned maintenance requirements to be performed between major overhauls of the ship?
• In case of a failure of both hydraulic pumps, what backup pumping system is provided?
• What is the function of the check valve located at each end of the feed line of an air compressor?
• What is the maximum limit for dissolved oxygen in the de-aerated feedwater used in hot de-aerated backfill lay-up?
• What are the two forms of stored thermal energy?
• What designation do the majority of ships use for their remote water level indicators?
• In automatic boiler controls, which two inputs are used for the minimum signal selector?
• Potential energy can be calculated using which formula?
• What type of corrosion do boiler watersides exposed to the atmosphere commonly experience?
• What is installed to keep moisture out of the uptakes and boiler firesides?
• Which block of the NAVSUP Form 1250 is the Job Sequence Number (JSN) inputted?
• What is the minimum steam atomization temperature at the burner front?
• How much sodium nitrite is required for a sodium nitrite lay-up?
• Which acid is commonly used to descale a dishwasher?
• What operational problem can occur from panting in a boiler?
• When should sodium nitrite be added for maximum effectiveness in a lay-up?
• How are relief valves typically set?
• A nut designated as B-16 is classified as what level of threaded fastener?
• What principle is demonstrated when energy in is equal to energy out?
• What is commonly used to clean the prairie holes on a propeller?
• What essential information does the Engineering Bell Book contain?
• What feature distinguishes an inside micrometer from an outside micrometer?
• What is the typical action taken to prevent tube marriages in boilers?
• Which type of propulsion turbine is most commonly used?
• What kind of information is typically exchanged through the Engineering Bell Book?
• What is the primary function of the guide ring on a nozzle reaction safety valve?
• What report must be filed when a defective turbine part is received from the navy stock system?
• Which form is designed to serve a dual purpose as a custody record and an inventory control document?
• Which form is mandatory when dealing with controlled equipage?
• What is the primary function of an electrohydraulic steering unit?
• Which of the following terms best describes the operational safety feature of winches?
• What tool is used to tighten nuts, bolts, and fasteners to a specific tolerance?
• What is the purpose of a boiler tube renewal sheet?
• Which factor is crucial in determining the safety and efficiency of boiler operation?
• Taps are used to cut what type of threads?
• What is indicated by radial cracking in a burner front?
• Which test method involves adding a reagent solution of known concentration into a sample of known volume to analyze the concentration?
• What happens when the control variable deviates from the set point?
• What is the maximum thread protrusion allowed after installation and tightening of threaded fasteners?
• What is the function of the Maintenance Requirement Card (MRC)?
• Which cleaning method is categorized under mechanical cleaning?
• What information does the Ships Information Book (SIB) cover?
• What is a common cause of boiler feedwater contamination?
• What type of treatment is necessary for seawater-contaminated boiler water?
• An operating main condenser must be secured if vacuum levels reach how many inches?
• Which of the following best describes the purpose of the Current Ships Maintenance Project (CSMP)?
• Which type of boiler uses both water and steam for heating?
• What is the maximum shoulder clearance on a manhole plate?
• Soot blower piping systems must be warmed up sufficiently to prevent what?
• What is the maximum steady state superheater outlet temperature on a D-type 1200 psig boiler?
• In ships equipped with demineralizers, what is the name for the water entering the demineralizer from any tank?
• What is the main role of the Engineer Officer regarding safety locks?
• A bowed rotor is caused by what?
• What type of strainer consists of one or more fine mesh screens or perforated metals?
• What are the two classes of packing and gasket joints?
• Which color copy of the NAVSUP 1250 form is given to the departmental representative upon receiving supply material?
• Who is responsible for maintaining the main engine reduction gear keys at all times?
• Which device is used to restrict the flow through the nozzle and flapper assembly in automatic boiler controls?
• Which figure oversees the overall briefing and completion of boiler flex testing protocols?
• What is located after the air inlet within the bottom of the vent fog precipitator?
• Before using a torque wrench you must ensure that the wrench has been what?
• What is the primary function of the thrust bearing in a main engine?
• Who is the Chief Engineer (CHENG)?
• How can you describe the main utilization of the Engineering Standing Orders?
• Once a boiler purge is complete, within what time frame must fires be lighted?
• Which unit of measurement is used to measure the heating value of fuel?
• On which side of the propeller is cavitation most likely to occur?
• How is thermal energy best defined?
• What function does nichrome wire serve in the refractory?
• What action must be taken when humidity indicator cards show humidity over 50 percent?
• What does the term locked train reduction gear refer to?
• Which of the following methods is used in dry lay-up techniques?
• What does the term "boom" refer to when associated with a shipboard crane?
• A stud or nut marked "NC" indicates what?
• How often should the oil king check the lay-up status?
• What device is used to prevent over travel of the aircraft elevator?
• When the l/o neutralization number exceeds which value is it required to change the l/o in the main pump?
• What is the purpose of a blind nipple in regards to boiler maintenance?
• Which procedures are utilized to verify that each boiler control component is functioning properly prior to boiler flex testing?
• What must be done if safety valves are accidentally lifted during boiler hydrostatic testing?
• How can practically all shipboard packing and gasket problems be solved?
• What is the main responsibility of the Engineering Duty Officer (EDO)?
• Which type of energy transformation occurs in a bicycle when pedaling up a hill?
• What type of cleaning is required for a newly erected boiler?
• What prevents a steam-jacketed kettle from over pressurization?
• Which system is designed to hold final control elements in their last known position upon a loss of control air pressure?
• Which type of valve is an example of a final control element in the 3 element feed system?
• Which Personnel Qualification Standards (PQS) section is referred to as the 200 series?
• What type of bearings are primarily used to guide the soot blower?
• What is a key characteristic of a duplex strainer?
• A firebrick measuring 2.5" x 4.5" x 13.5625" is commonly referred to as?
• What are the two types of atomizers used with main propulsion boilers?
• Which component of an air compressor helps to manage excessive pressure in the system?
• What is the temperature at which a liquid boils under pressure referred to as?
• Constant flow drain orifices are typically used in systems operating at what pressure?
• Who receives the PMS feedback report 4790/7B blue copy?
• What is the purpose of a blowdown in a steam boiler?
• Which mode of control complements automatic and remote manual in the automatic boiler control system?
• Desuperheaters shall be hydrostatic tested at what pressure?
• Which component provides lubrication in high-speed applications like gear couplings?
• In the context of main propulsion boilers, what initially causes the lifting of a safety valve?
• When is the flashpoint of fuel usually measured?
• Who is responsible for ensuring that the PMS Weekly schedule is adhered to?
• A high pressure air compressor is defined as operating above what pressure?
• What is the temperature range the solution is heated to when performing superheated boil?
• What type of refractory is preferred for small repairs in a boiler?
• When performing maintenance on boiler safety systems, which of the following is crucial to ensure safety?
• If saturated steam at a pressure of 1200 psia and a saturation temperature of 567 degrees F is superheated to 900 degrees F, what is the degree of superheat?
• Who is responsible for witnessing or designating someone to ensure that full boiler flex testing is conducted within PMS requirements?
• What is installed in heat exchangers to protect against galvanic corrosion?
• Which document is considered the primary reference for Ship Maintenance Activity (SMA) guidelines?
• How does temperature affect the lubrication of the main engine?
• Which component in a boiler is primarily responsible for protecting the furnace refractories?
• Where does the majority of steam that leaves the superheater go?
• Which property is critical to assess when sourcing fuel from outside the military supply system?
• When warming a propulsion turbine, how often should the turbine be rotated with steam?
• Who records bearing measurements and in which document?
• Where is firebrick likely to break when raising the boiler furnace temperature too rapidly?
• What is the criteria for securing the main lube oil pump after securing the MRG?
• What does the term 'loading pressure' refer to in pneumatic systems?
• What type of deposits reduce heat transfer across surfaces and act as insulators?
• What is the purpose of the cams on the soot blower head?
• A boiler must always be purged in accordance with what?
• What device develops a loading signal for the force draft blower speed control?
• What acid cleaning method is used onboard ship for coolers?
• Along with drum level and steam flow, which signal is associated with the feedwater control system?
• Which symbol means "stop" when logged in the Engineer's Bell Book?
• What is the minimum allowable lube oil temperature prior to jacking the main engine over?
• What must never be adjusted during a white smoke condition on an operating boiler?
• How many independent units does the power unit consist of?
• If lube oil pressure at the pump increases suddenly, what is likely clogged?
• What is considered the most effective form of engineering casualty control?
• What component separates the steam and water mixture by a series of corrugated plates that create rapid changes in direction?
• The changing of steam to condensate in the main condenser is an example of what heat effect?
• What is the role of the Chief Engineer?
• How is atmospheric pressure expressed at sea level?
• What happens when the pressure in a line exceeds the relief valve setting?
• Which term is defined as the compressed air that is supplied to each pneumatic unit?
• Which valve type is specifically designed to isolate a section of a system?
• What maintenance is crucial for an anchor windlass to function effectively?
• In which scenarios are radial burner front cracks typically formed?
• Which medium is typically used to inflate the main shaft seal under normal conditions?
• What is the maximum allowable pressure drop across a fuel oil duplex strainer when online?
• What is the preferred material for constructing expansion joints?
• What does a controlled superheat boiler achieve in terms of steam generation?
• Turbine blading erosion is usually limited to which area?
• What does the term 'PMS' stand for in relation to lubrication schedules?
• How many locations must soot blower screw connections be tack welded to prevent coming loose?
• How many hours must the boiler boiling out procedure last once the solution reaches the proper temperature?
• Steam turbine rotors and bearings are classified as what level of repairable part?
• In the context of automatic boiler controls, what is the time interval by which rate action influences proportional position action?
• How many minutes at a maximum can a boiler smoke heavy black before it must be secured?
• What is the minimum allowable lube oil temperature when starting Ship's Service Turbo Generators (SSTG's)?
• What type of cleaning method is less effective than high pressure water-jet cleaning for heat exchangers?
• What tool is typically used to split boiler tubes in preparation for removal?
• Which component is designed to reduce lag time caused by forced draft blower inertia?
• What guidelines are established for main propulsion boilers to reduce feedwater consumption on steaming boilers?
• When dissolved oxygen enters the boiler water, what type of corrosion is typically caused?
• What are normally found on the fire row of the generating bank of boiler tubes?
• Which component allows the operator to adjust the airflow signal for optimum combustion?
• What is the primary function of the operational logs in a machinist's mate role?
• Which NSTM provides general information about reduction gears?
• When should the blowdown of a safety valve be checked?
• What allows an operator to operate certain valves from distant locations?
• What is the liquid called that is returned to the liquid state by cooling in a condenser after steam has done its work?
• Which type of pliers is designed for efficiency in safety wiring installations?
• How often should a desiccant lay-up be monitored by the responsible watch stander after establishment?
• Which of the following is primarily vulnerable to oxygen pitting in a boiler?
• Who signs the PMS Weekly schedule?
• The main engine locking device should only be engaged when what condition is met?
• How can tool marks on boiler tubes be identified?
• What is the required gear tooth contact after installing new bearings on an SSTG reduction gear?
• What is the purpose of a nitrogen blanket in lay-up procedures?
• What is defined as the total heating surface of a naval boiler?
• What is the range of the thermometer used in API gravity testing?
• At what frequency are waterborne propeller visual inspections conducted?
• What is the only authority that can approve the blanking of soot blowers?
• What is the purpose of the scavenging air connection located on the soot blower head?
• What main function does the valve stem serve in a stop check valve?
• What does the daily fuel and water report include?
• What should always be confirmed before using EDTA waterside cleaning solutions?
• How is EDTA cleaning classified?
• What is the required length of the test flame on the flashpoint tester when conducting flashpoint testing?
• In how many degrees increments is the temperature increased after applying the test flame during a flashpoint test until flashpoint is achieved?
• The temperature of the wash water must be maintained within what parameters?
• What is the purpose of adding Hydrazine to the condensate/feedwater system?
• At least once every how many minutes must the engine be rotated while waiting to answer all bells after the main engines have been tested and warmed up?
• An incandescent dazzling white burner flame typically indicates what condition?
• Anaerobic compounds, when used with threaded fasteners, serve what purpose?
• How many minutes at a maximum can a boiler smoke white before it must be secured?
• Which component of the boiler system helps maintain the dry condition of the system during lay-up?
• In what manner should the boiler be examined when oil contamination is suspected?
• What is the purpose of an air register?
• Who is responsible for monitoring water and fuels onboard?
• Along with steam pressure control loop and airflow control loop, which other loop is associated with the automatic boiler control system?
• Which type of brush is recommended for cleaning handhole seating surfaces?
• What is the typical width of conveyors used in most applications?
• The main engine flexible coupling serves to protect the engine from which type of forces?
• What is the normal water level set point for a 3 element feedwater control system?
• Who conducts the pre-close out inspection of the main reduction gear?
• Who is primarily responsible for developing Engineering Training Team (ETT) drills?
• What is one of the characteristic features of a high turndown ratio in steam atomization?
• Who maintains the Engineer's Bell Book when throttle control is on the bridge?
• What type of boiler consists of one or more water drums?
• Which term is defined as any quantity or condition that is varied by a control measured and controlled by a control system?
• Where can water contamination tests for fuel oil storage and service tanks be found?
• What is the primary purpose of high pressure water-jet cleaning?
• What connects the high pressure turbine to the low pressure turbine?
• Which PMS schedule has a "Next Four Weeks" column?
• What type of propeller cleaning employs nonsiliceous material?
• How must boiler tube ends be prepared prior to installation?
• Turbine lagging pads must be verified as non-asbestos using what guidance?
• How often are low pressure air compressor relief valves lifted by hand?
• Except during emergencies, what is the maximum boiler firing rate that should never be exceeded?
• Except during emergencies, what boiler firing rate shall never be exceeded?
• How are individual economizer tubes typically connected?
• What is the principle of energy conservation related to?
• Which type of positioner is commonly used with the feedwater control valve?
• What is the significance of the 150 psig auxiliary steam system?
• What type of boiler consists of one or more water drums?
• Which type of deposits is the boiling out procedure for naval boilers used to remove?
• What is the steady state difference between the control point and the set point called?
• What position will the force draft blower final control element fail to if control air is lost?
• What is the required pH limit for shore steam?
• Why is it important to monitor boiler air casing fires?
• After accounting for obstructions, what is the rated capacity percentage of a fuel tank?
• What is the maximum allowable superheater outlet temperature during transition periods of 15 minutes to 1 hour on a 1200 psig D-type boiler?
• Which type of firebrick damage can be caused by lowering boiler furnace temperatures too rapidly?
• Most modern steering gear units are driven by what type of mechanism?
• What type of valve gives an audible warning to the operator when it lifts?
• What are the five advantages of steam atomization?
• What is the maximum time limit for a hot dearated fill lay-up?
• What is the maximum allowable bearing temperature during engine operation?
• What is the most important feature of the atomizer assembly in an oil burner?
• What are the standard dimensions of firebrick?
• How does an increase in bearing temperature typically affect equipment operation?
• What is the water flowing out of the demineralizer to the condensate system called?
• How many Engineer's Bell Books are required if a ship has two shafts?
• What is the temperature range of the thermometer used for flashpoint testing?
• Boiler tubes up to but not including 2-inch OD tubes must project into drums or headers at least how many inches?
• Who is the approving authority for repairs to turbine casing and rotor welds?
• What type is the main engine thrust bearing typically categorized as?
• What type of boiler inspection is performed after water washing?
• When are sliding feet checked to verify movement?
• What component should be inspected frequently when band brakes are utilized on winch drums?
• Which type of ahead speed does the symbol "III" indicate when logged in the Engineer's Bell Book?
• How frequently must overflow line valves that are accessible without entering the tank be inspected and cleaned?
• Which components of an outside micrometer are adjusted to make contact with the object being measured?
• What prevents foreign material from entering the high pressure turbine steam chest?
• What is the primary function of the air register in a combustion system?
• As the alkalinity of boiler water decreases, what happens to the severity of dissolved oxygen attack?
• What type of plugs are used for temporarily plugging blocked tubes in heat exchangers?
• What are the three basic physical states of all matter?
• What is the function of the metal projections on the economizer tubes?
• Which document is used to record all orders received by the station in control of the throttles regarding a change in the movement of the propellers?
• What is the periodicity of visual inspections for propellers?
• What is the desired set point on a general regulator steam pressure transmitter?
• If an engine produces 5,500 foot pounds of work per second, what is the horsepower generated?
• How often should the water column and gauge glass be blown down?
• How are failed turbine parts documented?
• What action should be taken if a flame goes out during boiler operation?
• What is a common result of improper venting during the installation of plastic fire clay?
• What is the maximum water temperature used for hydrostatic testing?
• How far apart should refractory anchors be spaced in large areas?
• Which type of steam trap operates on the principle that hot water under pressure flashes into steam when the pressure is reduced?
• Why is the main engine lube oil temperature lowered to 100 deg F upon reaching port?
• Which corner is annotated by the authorizing officer to indicate Damage Control Central was notified about in-progress tag-outs?
• What component will move along with the ram unit in an electrohydraulic steering system?
• What action should be taken if a boiler tube cannot be removed but needs to be plugged?
• Disposal of sodium nitrite must be in accordance with which NSTM chapter?
• What is the primary function of an unloading valve?
• What is the maximum surface temperature that insulating blocks can withstand?
• How often must steam-propelled ships take water indicating paste cuts on idle fuel tanks?
• What device is installed in steam lines to drain condensate while preventing steam escape?
• When should the lube oil system be secured for taking bearing depth micrometer readings?
• What is the function of the nozzle ring on a nozzle reaction safety valve?
• What is the function of boiler insulation?
• How is a dental-type coupling lubricated?
• Who specifies which engineering operating records will be maintained?
• What is the primary function of a steam trap in a steam system?
• How must atomizer sprayer plates be stowed?
• What effect does exceeding the critical RPM have on an SSTG?
• What is the definition of superheat in steam applications?
• What should be regularly checked to ensure optimal performance in turbine operations?
• What is the composition of copper-nickel alloy tubing used on surface ships?
• What is defined as written instructions prepared IAW JFMM 4790.3 for use in production and repair?
• What is the minimum pressure at which a bottom blow down shall be performed?
• Who is responsible for maintaining a master ETI drill package?
• How are flanges installed in a non-ferrous system?
• Which term describes the first escape of steam before a safety valve actually lifts?
• What is the primary function of a gauge glass on a boiler?
• What is the maximum journal bearing temperature on an operating main engine or SSTG as indicated by RTE?
• What is a crucial aspect of the responsibilities of the EOOW when the ship is underway?
• What is a mode of heat transfer that does not require physical contact between the warmer substance and the cooler substance?
• What determines the backlash on a pair of double helical gears?
• When steam is being admitted to the propulsion turbine, how long should the rotor remain idle?
• Which type of valve allows for smooth flow regulation rather than a simple open/close function?
• What is the term for unevaporated boiler water carried out of the steam drum with the steam?
• On a nozzle reaction safety valve, what function does the guide ring serve?
• How often should a safety shutoff device be dismantled for rebuilding?
• What equipment is installed to prevent moisture from entering the uptakes and boiler firesides?
• In which type of boiler do flames and gases pass through tubes surrounded by water?
• What is the purpose of the diffuser in an air register?
• Steam-jacketed kettles are primarily made of what material?
• Which temperature range is lube oil maintained at on an operating main engine?
• The circulation in a natural circulation boiler is an example of which type of heat transfer?
• Who is responsible for retiming locked train gears?
• At what interval should the oil king check the lay-up status?
• What is the primary function of the duplex strainer in the fuel oil system?
• When is the work on a propulsion turbine considered complete after inspection and repair?
• What should be checked after heavy black smoke conditions in a steaming boiler?
• What is a short term decrease in drum water level due to a change in firing rate or steam flow called?
• What must be performed on boilers under specific lay-ups before shifting to a hydrazine lay-up?
• What should a Cold Iron Watch do if unusual conditions are observed?
• Automatic steam-mixing valves regulate hot water rinse temperatures to what range?
• In reference to automatic boiler controls, what are an orifice plate, flow nozzle, thermometer bulb, and air registers examples of?
• How many RPMs does the flashpoint tester's stirring mechanism rotate?
• How can heavy fireside deposits in boilers be significantly reduced?
• For what application are plug valves commonly used?
• Personnel stay times are reduced by up to what percent from boiler stack gases?
• What is the gear ratio of a standard SSTG reduction gear?
• Who conducts the boiler flex testing?
• Which NSTM contains information on the repair and care of labyrinth packing?
• What happens to pressure as altitude increases?
• What are the two types of safety valves used onboard naval vessels?
• SSTGs are fitted with what type of governor?
• What is a tool that can be used to retrieve small articles from hard-to-reach places?
• A closed loop system gives a comparison with the desired condition by using what method?
• How frequently should boiler watersides be cleaned when a chelant system is installed?
• Which of the following is NOT one of the main types of generating and circulating tubes?
• What is the primary purpose of the low water cutoff in a boiler system?
• How is propulsion turbine bearing wear determined?
• Boiler full power capability will be adversely affected if what percentage of generating tubes are plugged?
• To what distance should the boiler tube ends be polished when preparing for installation?
• What should be done if a micrometer becomes miscalibrated during measurement?
• Why must a predetermined tightening sequence be used when tightening the gage glass studs?
• What is defined as the feedwater as it enters the boiler steam drum?
• What will increase along with the valve failing open due to a ruptured feedwater control valve diaphragm?
• If the white smoke condition cannot be corrected within one minute, what must be done?
• What must be functioning properly along with the airflow transmitter when performing the CRTM on the automatic boiler system?
• What type of valve is used on overboard overflows to prevent backflow of water from the sea?
• Boiler soot blower nozzles are installed not greater than every third tube if the axis of the element is at right angles to the axis of the tubes or not greater than how many inches if the axis of the element is parallel to the tubes?
• What is the function of the staff packing on a SSTG?
• What could indicate that a boiler is reaching a dangerous pressure during operation?
• Which type of inert gas is commonly used to test expansion valves?
• Oxygen pitting mostly occurs in boiler tube down comers, steam ends of generating tubes, along with where else?
• What occurs when a rising stem gate valve is opened?
• How many BTU are needed to change a pound of ice at 32 degrees F to a pound of water at the same temperature?
• How many pounds of sodium nitrite are added to the boiler prior to placing the boiler on a dry lay-up?
• Caustic corrosion in boilers is typically a result of which type of contamination?
• If the boiler inspection device (BIDS) fogs up during a furnace inspection, what is the probable cause?
• What is the bilge drain hole size on soot blower systems that operate at 600 psig or below?
• What is the common unit used to measure power?
• Which type of casualty is indicated by a reduction gear journal bearing showing a dramatic increase in temperature and then decreases to ambient temperature?
• Which type of packing is usually used on soot blowers?
• What are the two types of safety valves used onboard naval vessels?
• What component prevents slippage of the winch during operation?
• What is the minimum allowable temperature of the oil supplied to the reduction gears before jacking over the gears?
• What maintains the axial position of the propulsion turbine rotor?
• When the outside micrometer spindle is rotated one full revolution, how far does the spindle advance or recede?
• What device is installed to stop the high pressure air compressor automatically when the cooling water rises above a safe limit?
• Upon completion of a propeller visual inspection report, to whom is the report submitted?
• When using compressed air for light-off, what is the required pressure of the compressed air?
• In a spring-loaded reducing valve, what determines the position of the auxiliary valve?
• What is one of the results of a blown diaphragm in the combustion control system?
• Which control is essential for maintaining safe operating pressures in a boiler system?
• Turbine failure must be reported to whom?
• What is the maximum allowed time limit for a steam blanket lay-up?
• What is identified by the first digit in the symbol number of a moving joint?
• What is the function of the main propulsion plant in the engineering department?
• What is the minimum flashpoint of JP-5 (F-44)?
• Which document is important for tracking uncompleted PMS checks?
• What component in the three-element feedwater control system develops a pneumatic output signal proportional to the difference between its outputs?
• What must all boiler tube failures be reported to?
• Which measurement tool is most sensitive for precision measurements in machining?
• Which effect will a low boiler economizer outlet temperature have on the boiler superheater outlet temperature?
• The high pressure turbine element is normally classified as what type of turbine?
• What condition does a boiler face if it is not laid up properly after 24 hours idle time?
• Water washing of boiler firesides shall only be accomplished after approval from whom?
• What is the maximum time limit for a nitrogen blanket lay-up?
• Which publication must EDTA used for waterside cleaning must be disposed of in accordance with?
• What must never be adjusted during a white smoke casualty to the boiler?
• What is almost always the cause of boiler tube heat blisters?
• How is boiler full power capacity defined?
• A cracked gauge glass on the main condenser could lead to what issue?
• What is the function of the turning gear when a ship is docked?
• What two main factors determine whether the rotor is moved by a direct impulse or reaction?
• Backlash of main engine reduction gears refers to what?
• Which term describes a metallic hammering sound or a definite vibratory noise within a safety valve when setting boiler safeties?
• Which component serves as the output of the high limit relay in automatic boiler controls?
• Which NAVSUP form is utilized on non-automated ships?
• What role does sodium metasilicate play in boiler maintenance?
• What is formed by the reaction of ash and seawater solids with brick work?
• What is the primary function of a check valve?
• Who shall make frequent inspections to ensure sprayer plates and nozzles are in good condition?
• What safety feature is crucial for preventing overpressure situations in boiler systems?
• How often must a 10% boiler surface blowdown be conducted after light-off following EDTA cleaning?
• What does the term residual fires mean?
• In reference to automatic boiler controls, the max signal selector selects the higher of which two signals?
• Custody of keys for all security locks falls under the responsibility of whom?
• What is the size of the internal drain hole on the soot blower bilge drain valve on 1200 psig systems?
• What is termed when there is a short-term decrease in drum water level due to a change in firing rate?
• What is typically the function of a characterizing relay in boiler controls?
• What is one of the key advantages of steam atomization in propulsion boilers?
• What is checked to assess the HP turbine for boiler water carryover after a boiler high water casualty?
• What are caused on boiler tubes because of faulty manufacturing?
• Mortared joints between firebricks must never exceed what clearance?
• A steam blanket lay-up should be monitored at what frequency by a responsible watch stander?
• What type of valve is always open or always closed, and does not regulate fluid flow?
• Where are copies of the Main Space Fire-Fighting Doctrine kept?
• To whom are tag-out audit results reported?
• What happens to the boiler mechanical cleaning hours if the EDTA cleaning is successful?
• Which term is used for a record sheet that has technical bulletins containing information about material such as composition and health hazards?
• What is the primary purpose of a steam strainer in a turbine system?
• Main propulsion boilers are inspected at what periodicity?
• During boiler operations, what is the main consequence of inadequate lubrication?
• Who must approve drill packages prior to conducting ETI drills?
• The handhole refacing tool must only be used by what personnel?
• A fixed joint is identified by the first digit in the symbol number, which would be?
• How does the mesh size of a flash screen impact fuel tank operation?
• What is the function of the waterwall tubes in a boiler?
• What is the basic cause of all boiler explosions?
• Which boiler flex level is considered optimum for plant operation?
• What is identified as the basic cause of all boiler explosions?
• What is used to identify a specific or non-specific maintenance action?
• What is the term for the pressure specified by the boiler manufacturer as a criterion for design?
• How is axial-entry type turbine blading secured to the rotor wheel?
• What is the purpose of the needle valve installed on an auxiliary turbine?
• Which type of boiler casualty requires the boiler to be purged after securing the boiler?
• What is used to cut threads in metal, plastics, and rubber?
• What is the primary function of generating tubes in a boiler?
• What can adjusting the fuel oil header pressure during a white smoke condition lead to?
• Why is the prevention of scale in dishwashing machines critical?
• What is the operating pressure for testing rotary soot blowers as per PMS?
• What is the purpose of the boiler internal feed-water pipe?
• What is the lifting capacity of an aircraft elevator?
• Auxiliary boilers supply steam for all services except which of the following?
• What is the periodicity of lubricating sliding feet?
• In the removal of fouling from heat exchangers, what is a key benefit of acid cleaning?
• What term describes thermal energy that is in transition?
• What is the purpose of the bilge drain valve in the soot blower piping system?
• Which of the following practices is essential when performing maintenance on gas turbines?
• What is the only thing that can be measured at its thinnest point to really determine the condition of a furnace wall?
• How long is the hydrazine/morpholine lay-up valid for?
• What is the first stage in the separation of steam and water in a CE boiler?
• What type of refractory is preferred for small repairs where standard size brick or tile cannot be used?
• What is typically the part of a valve that moves to start or stop the flow of fluid?
• Why is it important to maintain the water column and gauge glass?
• Which material is typically used to construct boiler generating tubes?
• What component protects the SSTG turbine casing from excessive pressure?
• What happens to the output on a nozzle and flapper assembly when the flow through the nozzle is decreased?
• If the clearance between the nozzle diaphragm and the adjacent row of blades on an SSTG turbine is outside prescribed limits, what action should be taken?
• Which term is defined as the time required to transport a change from one place to another?
• At what pressure does a steamer typically operate?
• Which of the following best describes the condition of slump as related to firefighting?
• Which type of damage can cause localized pitting in boiler tubes?
• What should be done if the main engine turbine rotors cannot rotate within 5 minutes?
• After releasing the hydrometer in the sample, how much time must be allotted for it to reach equilibrium when conducting an API gravity fuel oil test?
• What is the maximum temperature an insulating block can withstand?
• What is the main role of boiler air cock valves during boiler filling?
• How tight must installed boiler safety valve gags be?
• When tightening male threads on fasteners, how many threads should protrude beyond the top of the nut?
• What is indicated on a Danger tag?
• Who are the only individuals authorized to accomplish adjustments or repairs of automatic boiler controls?
• In automatic boiler controls, what is the primary purpose of the automatic feedwater control system?
• Which type of micrometer is designed for measuring a piece of round stock?
• When replacing a propulsion turbine journal bearing, the rotor must be lifted vertically to what maximum height to ease the removal of the lower half of the bearing?
• When should water gauge glasses be checked for satisfactory operation after light-off?
• Which of the following is not one of the authorized cleaning methods for removing soft deposits?
• What is the probable cause of a racing fuel oil service pump?
• What is the effect of moving a balanced piston-type valve to the off-center position?
• Which two types of impulse turbines are used exclusively for auxiliary operations?
• A pH of seven is defined as?
• What is the time limit on a sodium nitrite wet lay-up?
• Where can guidance and general information on all naval boilers be found?
• What tool is specifically designed to remove broken screws without causing damage to the surrounding material?
• Which term describes wandering, straight-walled, canyon-like cavities in the tube metal?
• Who determines the need for cutting an exploring block?
• How many minutes is the air lock designed to hold for?
• What is a PMS feedback report considered to be when the safety of personnel and equipment are involved?
• Which condensers are the principal sources of condensate?
• Which component is critical in dampening the motion of water in a steam drum?
• What percentage of access covers or plates installed on MRG casings with fewer than 12 fasteners must be secured with a lockable cover?
• Which type of sample must be drawn prior to starting any steam-driven turbine equipment?
• What does the term impulse turbine refer to?
• What device is used to remove airborne oil fog from the MRG vent airstream?
• Which action of the integral controller restores balance after a load change at the set point?
• What component maintains the radial position of the propulsion turbine rotor?
• In a spring-loaded reducing valve, which forces are acting against each other?
• What best describes the operating principle of an impulse turbine?
• What are the two main components of an oil boiler?
• In reduction gear maintenance, what is used to ensure proper alignment between the gears?
• What is the purpose of a bridgewall marking on a globe valve?
• What type of joints utilize gasket material?
• Who is authorized to extend the ten-year reduction gear inspection?
• What is the purpose of the apron plates?
• How many volumetric air changes does a boiler purge have?
• What is the term for an uncontrolled oscillation of a controlled variable in automatic boiler controls?
• Boiler superheated tubes are constructed of chromium, carbon molybdenum, and which other material in some applications?
• What prevents a relief valve from lifting at normal operating pressure?
• What function does the safety shutoff valve serve?
• If specific heat is a thermal property, what can be said about its value?
• What is a common safety precaution when handling fuel oil on a vessel?
• What is the desired restriction in the path of flow concerning automatic boiler controls?
• Who typically maintains the Engineering log?
• What is the correct procedure for dipping bricks in mortar when laying firebrick?
• What is the primary purpose of a Formal Work Package (FWP)?
• Which type of QA package would a motor rewind require?
• The term residual fires refer to what condition?
• What term describes the manipulation of fuel and air controls by remote manual means in automatic boiler controls?
• Sputtering burner flames are an indication of what?
• What type of failure can result from improperly installed mortared joints in firebrick?
• In a D-type boiler with an integral superheater, what protects the superheater from overheating during initial steam formation?
• What must be affixed to all corrugated ribbon containers?
• The Engineering Log is a legal record that must be retained onboard for how many years?
• Which type of ahead speed does the symbol "I" indicate when logged in the Engineer's Bell Book?
• What function does the steam smothering system serve?
• What type of turbine does not have a nozzle to direct steam but has a set of fixed blades?
• Where is the kingpost bearing located?
• What is the common language of supply material identification?
• Which pressure range is typical for operational systems on a ship’s machinery?
• Which factor is essential when tightening handhole nuts during hydrostatic testing?
• How is tubing identified in the Navy?
• Why is the minimum signal selector verified along with the airflow transmitter during master light-off checks?
• In what condition are liquid and vapor said to be in equilibrium?
• Which pressure is typically monitored as part of final control element settings in boiler systems?
• Boiler operation along with what else are the major causes of burner front parallel cracking?
• What hydrostatic test is essential for checking valve and fitting tightness?
• At what pressure does the combination exhaust relief valve lift?
• Which potential issue in air compressors can be mitigated by regular testing of relief valves?
• Define the term backlash in mechanical terms.
• What is the commonly accepted practice before starting a boiler?
• What is a typical indicator of fatigue in boiler tubes?
• During a steam or nitrogen blanket lay-up, how long is it permissible to interrupt the process for emergency repairs?
• What type of refractory brick is used for the innermost layer of the furnace?
• What is a major difference between critical RPMs on an SSTG and an auxiliary turbine?
• How many types of propulsion turbines are utilized in the Navy?
• What type of safety device is the master air lock trip valve considered in automatic boiler controls?
• Which type of corrosion is primarily responsible for fireside thinning?
• What is the quickest means to determine any change in the relief position of the propulsion turbine rotor caused by bearing wear?
• When vapor is in contact with its liquid source and maintains temperature, this state is known as?
• What is the required size of mortared joints when installing firebrick?
• Hot air lay-up installation shall be inspected at what interval to ensure proper operation?
• Who administers the hydrazine/morpholine lay-up?
• What effect on the superheater outlet temperature will a low boiler economizer outlet temperature have?
• Water gauge glasses are checked for operation after light off at what pressure for a D type boiler?
• What is used to clean atomizer sprayer plates?
• In automatic boiler controls, which component converts the fuel oil demand signal?
• What does the term "distillate" refer to in marine engineering?
• What is the purpose of a hydrostatic test in the context of boiler maintenance?
• How many days must castable refractory be air-cured?
• In what circumstance is radial cracking most likely to occur in boiler operations?
• What type of deposits are formed in the boiler due to oil contamination?
• What type of packing is constructed from 100% graphite?
• Lay Up (LU), Periodic Maintenance (PM), Start Up (SU), along with which other PMS periodicity code comprise the four Inactive Equipment Maintenance (IEM)?
• Which of the following is NOT a wet lay-up method?
• When a dehumidifier is installed during an extended MRG lay-up, what relative humidity must it maintain within the MRG casing?
• Which publication provides guidance on acid cleaning of heat exchangers?
• Can raw fuel be removed from the furnace by purging the boiler?
• What is used to lag the atomization piping at the burner front on ships with steam atomization?
• What mechanism ensures proper alignment in a steam turbine?
• To achieve maximum effective sealing of the labyrinth packing, what should be maintained for the tip width of packing teeth?
• What are the three types of heat transfer?
• What type of burner front cracking occurs due to stresses from normal expansion and contraction?
• What is the purpose of the Allowance Parts Lists (APL)?
• What is the primary function of a gate valve in a piping system?
• Modern aircraft carrier elevators are powered by which type of unit?
• What is the maximum distance, in nautical miles, from shore that overboard discharge of fuel contamination may occur?
• Which manual outlines the organizational management and operation of the engineering department?
• What type of controller is used to regulate airflow into the burner in automated systems?
• Kinetic energy is defined as?
• What indicates that a desiccant lay-up is within requirements?
• What type of pressure results in the lifting of a safety valve?
• What is the standard temperature for determining volume on all petroleum products?
• What holds firebrick and burner tile securely in place?
• What type of energy is described by fuel oil used in a boiler?
• What is the typical range of flashpoints considered safe for handling fuels in the military?
• What is the primary cause of turbine blade failure?
• What do engineering night orders typically cover?
• What is the most common bearing found in main reduction gears (MRGs)?
• What type of hazard is primarily associated with soot?
• Why must a broken mica on the gauge glass be replaced promptly?
• Which type of burner front cracks run approximately parallel to the surface and can lead to severe damage?
• Which of the following is NOT a characteristic associated with superheated steam?
• What effect does disodium phosphate (DSP) have on the boiler water?
• What is the primary purpose of a steam blanket lay-up?
• How many times should the filter handle be turned on an auxiliary turbine oil line during a watch?
• How does seawater affect boiler water alkalinity?
• What critical strategy should be adopted when changing boiler operating temperatures?
• Where can specific information concerning pressure gauges and thermometers be found?
• What can modern naval boilers tolerate before suffering tube ruptures due to scale?
• What is the required percentage of contact for turbine casing joints with pumping grooves?
• Who updates the PMS Quarterly schedule on a weekly basis?
• At least once every how many hours must the boiler be bottom blown after lit-off following EDTA cleaning?
• Cadmium plated fasteners are not recommended for use in systems with temperatures exceeding what?
• Why is the use of flexible-hose burner leads for propulsion boilers considered a fire hazard?
• SSTG gland sealing steam pressure operates within what range?
• How are individual economizer tubes connected in a boiler system?
• Hand-driven windlasses are designed for use on which type of vessels?
• How is power defined in a mechanical context?
• What critical factor should be monitored to ensure boiler efficiency?
• Automatic unloading valves are installed to exhaust to what major component?
• Soot blower heads must be replaced when the head thickness has reached what percent less than the original thickness specified on the applicable drawing when measured by ultrasonic testing?
• What issue arises from a malfunctioning or improperly operating DFT?
• In a maintenance context, what is the importance of using the correct brush type on handhole seating?
• Which type of turbine is designed for higher efficiency with lower pressure at the exhaust?
• What is a necessary action regarding oil spray nozzles during any gear operation?
• Which of the following methods is NOT one of the five wet lay-up methods?
• When is industrial hydrazine/morpholine lay-up considered a loss?
• In an automatic boiler control system, which integral controller action is used to return to set point after a disturbance?
• Which component is typically used to control the speed of the hydraulic winch?
• What is the purpose of the diffuser in a combustion system?
• What is caused by the sudden cooling of boiler tubes after they have been overheated?
• What size fire hose is typically used during the backflushing procedure?
• For an effective boil-out, the chemicals should be completely dissolved and maintained within what temperature range?
• What type of air compressor would operate within the range of 151 psig to 1000 psig?
• What is the purpose of filtering fuel through filter paper while conducting a flashpoint test?
• Where is distillate typically stored on a ship?
• What prevents the hydraulic system from losing its effectiveness during operation?
• What is the significance of a PMS feedback report in maintenance schedules?
• What material is used in lubricated corrugated ribbon packing?
• Which type of tube rupture occurs due to prolonged overheat conditions?
• What kind of deposits does high pressure water-jet cleaning typically remove?
• What must be reduced if a controlled variable oscillates about the set point at high frequency in automatic boiler controls?
• What type of tool is a safety ripping chisel?
• Air compressors are classified into how many classes?
• What is the periodicity for testing boiler safety hand easing gear?
• Which property of boiler water can cause general waterside thinning of tubes when it is too low or too high for a long period?
• What is the recommended taper angle for a standard taper plug?
• What does the second digit of the symbol number indicate in valve classification?
• Which CASREP category would prevent a ship from getting underway or accomplishing its mission?
• What indicates successful operation of steam separators within a boiler system?
• What is the normal dismantling period to rebuild a safety shutoff device?
• What would classify energy as 'potential energy'?
• What do we call the water flowing out of the demineralizer to the condensate system?
• Propellers that have been in operation for more than five years must be inspected using which technique?
• The primary water level indicator activates alarms and generates an electrical signal that is proportional to what?
• What action do steam separators use to separate the steam and water mixture?
• Which form is used for requisitioning material that is not available through Supply?
• What boiler component preheats the feedwater before it enters the steam drum?
• What is the purpose of an individual equipment log in operational logs?
• What component is used to transfer action from one of several sources to another unit?
• What causes the formation of white smoke?
• Which type of damage causes deformation from semi-plastic flow of the tube metal due to mild overheat?
• Which statement about chemical energy is true in relation to fuel oil?
• What rule must always be followed during boiler light off?
• How many sections are in the PHEL curve?
• What is the required amount of sodium nitrite used for a sodium nitrite wet lay-up?
• What is the initial step to ensure a boiler's safety before maintenance?
• In a nitrogen blanket lay-up, what is a critical factor to maintain?
• Which publication provides instructions for preparing and using the Engineering Log?
• In steam turbine operations, what does a radial flow indicate?
• During the weekly lubrication of the reduction gear, how many turns should the propeller shaft be jacked?
• What is used to identify each type or style of packing or gaskets?
• All cranes must withstand a static load of what?
• Speed-limiting governors installed on auxiliary turbines are designed to limit maximum speed to what percentage of designed speed?
• What tool is specifically used to dress bruised or rusted threads?
• Which series should be referred to due to rapid changes in the 3-M system?
• What is the main purpose of operating soot blowers in a proper sequence?
• What does the electric motor driven turning gear connect to on the MRG?
• Which component in the general regulator combustion control system enhances forced draft blower response time?
• What serves as the heating source for the economizer?
• What detrimental effect can occur from over-tightening the gauge glass studs?
• An operating SSTG must be secured when vacuum decreases to how many inches?
• What is used to maintain a record of defective boiler tubes and newly renewed tubes?
• Reduction gear tooth contact can be inspected by applying what to the gears?
• What role does the Cold Iron Watch typically play?
• What are adjacent boiler tubes defined as when they are warped in such a way that they touch each other?
• What is the purpose of the vortex eliminator in the steam drum?
• Which medium is utilized along with oil pressure to power aircraft elevators?
• What is the minimum steam atomization temperature at the burner front?
• At what boiler pressure is the sodium nitrite solution injected into the boiler before a dry lay-up?
• Which percent of boiler design pressure must the boiler be hydrostatically tested to if it has an unsatisfactory strength inspection at the five-year period?
• What is the function of the steam smothering system?
• Which device is used for the API gravity fuel oil test?
• When operating the anchor windlass, care must be taken to inspect what frequently?
• What type of boiler tube rupture resembles a burst bubble with tapered edges?
• What is the definition of chemical energy?
• In boiler feedwater, which tanks is distillate stored?
• What is the purpose of the airflow transmitter in boiler operations?
• What device is used to measure viscosity?
• What condition must be met before a main boiler is considered operating safely?
• In the feedwater control system, which element is measured alongside boiler drum level and steam flow?
• What prevents windmilling of an idle forced draft blower while the other blower is online?
• Superheater protection is taken from which system?
• What is the maximum allowable safety valve lifting pressure tolerance on boilers with a steam drum pressure between 326-710 psi?
• What is the maximum allowable gap between two sidewall tubes in a D. Type boiler?
• What is the desired range of steam atomization temperature?
• How many pounds of anhydrous Trisodium phosphate (TSP) are used per 1000 gallons of feed water in the boiler boiling-out procedure?
• What is the operating pressure range for a medium pressure air compressor?
• Who must maintain a constant security watch when conducting turbine nozzle clearances?
• How must atomizer sprayer plates be stored?
• What is the term for compressed air that travels from a pneumatic unit to a motor operator of a final control element?
• Which term is defined as the interval of time between the start of a response and its completion?
• How many quarts of non-ionic wetting agent are required per 1000 gallons of feed water for the boiler boiling-out procedure?
• Which maximum temperature is boiler refractory insulating block designed to withstand?
• What is done to indicate a PMS check has not been completed during the week on the PMS weekly schedule?
• What must be done to correct a chattering safety valve?
• What kind of maintenance schedule is typically recommended for propulsion turbines?
• When the main feed pump discharges feedwater toward the boiler, the feedwater is transported by what kind of heat transfer?
• What is the correct term for the properties and risks associated with air systems under high pressure?
• What is latent heat defined as?
• What are the three endpoints a steaming boiler has?
• What are the two principal parts of an air register?
• A simple gauge for measuring waterside pit depths can be made using a card of which size?
• The main engine must be secured if for any reason the main engine turbine rotors cannot be rotated within how many minutes?
• Which device would most likely be used in the calibration of marine equipment?
• What are the two principal parts of an air register?
• What is the function of the nozzles on the soot blower element?
• Which of the following is NOT a method of dry lay-up?
• In a steam turbine, what role do bearings play?
• What is the maximum allowable safety valve lifting pressure tolerance on boilers with a steam drum pressure of 325 psi or below?
• Which tube should be removed for analysis to determine if the boiler needs acid cleaning?
• What is the distance from the bottom of the buret with the stopper in place to the bottom of the reagent bottle?
• One horsepower is equivalent to what amount of work?
• What is the trip setting for individual final control element air lock valves in terms of air pressure?
• What is admitted to the boiler air casing during a fire in the air casing until the fire is out?
• What should be used to clean atomizer sprayer plates?
• Which type of tamping mix is most suitable for repairing cracks in refractory?
• What is the consequence of not properly managing residual fires in a boiler?
• What is installed on the boiler to allow operators to observe the water level from their watch stations?
• What is the term for a substance that transitions from a gas or vapor to a liquid?
• The combination exhaust relief valve is set to lift at what range?
• What is the transverse diametrical pitch of a reduction gear?
• Which of the following actions should be taken when preparing for a boiler system lay-up?
• What is the primary purpose of gland sealing steam?
• Which type of strainers are prohibited for use in the fuel oil system?
• How many pumps typically drive one wildcat?
• What is the maximum thrust bearing temperature of an operating main engine or SSTG as indicated by RTE?
• How are all boiler tubes identified?
• What are two types of boiler tube expanders?
• What is the only moving part in an impulse steam trap?
• How many minutes is steam admitted to the boiler firebox when raw fuel is discovered on the firebox floor?
• Along with spalling, what is another main cause of refractory deterioration?
• What will happen if the water level in the boiler is too low?
• A pressure reducing valve is installed upstream of the air lock system and maintains the control air pressure at what?
• What is the definition of potential energy?
• Deviation is defined as the instantaneous difference between the actual value and which other value?
• What is the maximum allowable fuel oil temperature at the burner front?
• What term describes unevaporated boiler water carried out of the steam drum due to malfunctioning internals?
• What does the Engineering Log record?
• When dealing with controlled equipage, which of the following forms is crucial for compliance?
• Before performing fireside cleaning in a boiler, what must be done with the steam smothering system?
• How many calories are approximately equal to 1 BTU?
• What is installed upstream in the steam line of the governor to protect an SSTG turbine from debris?
• What size tapered rod is tapered to a blunt point in the last half-inch to vent plastic fire clay burner fronts?
• In what type of check valve does the disk move up and down due to changes in fluid pressure?
• In what increments is the thimble on an outside micrometer divided?
• How often must the boiler safety valve hand easing gear be checked during boiler operation?
• What type of fasteners must be used in salt water coolers?
• What is the primary purpose of using a dry lay-up method for a boiler?
• What function does nichrome wire serve in the refractory?
• Which condition typically requires consultation of the EOCC guide?
• Will the inside of properly closing expansion joints be light or dark in color?
• What is the allowable percentage of economizer tubes that can be plugged without affecting boiler full power capability?
• What is the maximum temperature rise across a bearing on an operating main feed pump?
• What detrimental effect can mechanical strain from improper boiler operation cause to the furnace wall?
• Where can information on correcting a bowed rotor casualty be found?
• What is the main purpose of the air compressor unloading system?
• What is the purpose of the apron plates in a boiler?
• Which of the following is an effect of using hydrazine in boiler feedwater systems?
• What type of tile is constructed using silicon carbide?
• What material is used for the chock facing of the sliding feet?
• Heavy and prolonged seawater contamination of the fuel oil will form what type of corrosive products on the brickwork?
• ETT drills are permitted only on boilers that have achieved a boiler flex level test of which level or higher?
• Which document must be used to record all boiler tube work and replacement?
• Which block of the NAVSUP Form 1250 is the requisition date recorded?
• What type of modification must be authorized before making repairs on reduction gear systems?
• What is the maximum pressure at which steam-jacketed kettles operate?
• What is the lifting tolerance for safety valves installed on 600 psig boilers?
• What can excessive force on boiler safety valve gags cause besides safety spindle deformation?
• What type of corrosion is caused by the contamination of boiler water with shore water?
• Which part of the three-element feedback system is essential for comparing feed flow with steam flow?
• Who is ultimately responsible for maintenance on board Navy ships?
• Which type of solution can be used in conjunction with the back of your hand to find leaks within the boiler air casing?
• Plastic is vented at how many inch intervals along the center line when using plastic fire clay for burner cone installation?
• What is installed to accommodate the expansion of refractories without exerting pressure on linings?
• Boiler water carryover to the steam turbines is the greatest concern for the engineering plant when which type of boiler casualty occurs?
• Kingpost bearings are designed to accommodate what types of load?
• During which stage does a boiler require the most careful monitoring for pressure changes?
• Planned Maintenance System (PMS), Maintenance Data System (MDS), and which other system are the three separate 3-M system subsystems?
• Where does the scavenging air system receive its air source?
• What is the lifting pressure tolerance for safety valves installed on 1200 psig boilers?
• What type of circulation results from installing the generating tubes at an increased inclination?
• What is the required contact for non-pumping groove joints after opening a propulsion turbine casing joint?
• Main engine lube oil temperature is reduced to what temperature when approaching port?
• In ships equipped with demineralizers, what is the water entering the demineralizer from any tank referred to as?
• How often is the main shaft inflatable seal tested?
• What is the function of the fixed blades of a reaction turbine?
• Which turbine generates power through the expansion of steam in the blades?
• What device allows for equalized cooling of the shaft after securing the engine?
• Which of the following materials is commonly used for refractory in boiler construction?
• When is a steam blanket lay-up considered lost?
• When laying up reduction gears for an extended period, what is used to keep them moisture-free?
• What action must be taken if internal turbine damage is suspected and requires lifting the turbine?
• Identify a common symptom resulting from insufficient heat absorption in boiler tubes.
• What does a Danger tag with the serial number 9-19 indicate?
• Where can you find guidance and general information on all naval boilers?
• Which series lists the sources from which rating exam questions are taken?
• What term is used to describe the act of adding or subtracting from a control system signal?
• PMS schedules are categorized as Quarterly, Weekly, and what other category?
• What is mechanical potential energy measured in?
• What is the most common cause of a control valve or actuator not responding to a position input signal?
• What type of steam turbine moves the rotor by the force of reaction?
• What factors determine the amount of oxygen that will dissolve in water?
• In which unit is heat measured?
• What is the allowable tolerance for a simmering boiler safety valve, assuming it is not at boiler operating pressure and is less than the blowdown?
• What action is performed to verify the proper operation of water gauge glasses?
• Which advantage of steam atomization allows for operation in colder conditions?
• Which type of packing is typically used in boiler soot blowers?
• A deferred action must be prepared using OPNAV Form 4790/2K if a problem arises with a piece of equipment that can't be repaired within how many days?
• How does the expansion and contraction of a boiler primarily affect its operation?
• Who authorizes Out of Calibration and Out of Commission labels?
• When removing lagging, who should be contacted immediately if unsure of the material?
• What can be directed into both ends of the slick to keep it from moving if oil is spilled between two ships?
• What is the maximum allowable RPM differential for two force draft blowers operating in parallel?
• What reference can be used to find general information on main engine reduction gears?
• In which scenario is potential energy highest?
• Within how many minutes must the boiler parameters stabilize after conducting a boiler flex up ramp or down ramp?
• Which sealant is most commonly used on turbine casing joints?
• What is the typical end play with the engine cold?
• In an impulse turbine, where does the steam lose pressure and gain velocity?
• What material is silica gel or silicate primarily used for?
• What is the name given to compressed air moving between pneumatic units?
• What device protects the steering pump unit from over pressurization?
• What is the term for steam returned to liquid state in a condenser?
• If you are unable to correct the white smoke condition within one minute, what must be done?
• Which pressure must safeties be lifted to if a steaming boiler suffers a ruptured tube?
• What provides a positive suction head to the main feed booster pump?
• Who must approve lighting fires in a boiler with newly installed castable refractory after an air-cure of only one day?
• On a D-type boiler with an integral superheater, what protects the superheater from overheating during the initial steam formation?
• Which publication provides general information on Records, Tests, Inspections, and Reports?
• What is the purpose of plugging boiler tubes beyond maintenance?
• What does the term 'singing' in reference to propeller behavior imply?
• What is the maximum allowable conductivity of shore steam?
• Before entering boiler drums or fireboxes, what must be certified?
• Which boiler casualty will be caused by a loss of the operating main feed pump?
• What is the primary function of refractory materials in a boiler system?
• How many boiler inspection devices (BID) are required per fireroom?
• What should be checked before starting a boiler operation?
• What is the formula used to calculate horsepower from foot pounds of work done?
• Who is responsible for approving all procedures for repairing non-bronze propellers?
• Which publication gives burner tile fitting guidance?
• What type of valve is shaped to hold a cylindrical or tapered plug?
• What is the friction loss in a journal bearing directly proportional to?
• What should be done if lumps are found in a newly opened bag of castable?
• What type of controller is the airflow controller in reference to automatic boiler controls?
• What implication does a safety valve have in pressure systems?
• What is the blowdown range for safety valves installed on naval vessels?
• What type of valve is a combination of a gate valve and a plug valve?
• End play cold thrust bearing clearance is defined as what?
• What hydrostatic test pressure mandates the renewing of all boiler handhole and manhole gaskets after testing?
• What are three reasons that soot must be removed from a boiler?
• What pressure must the boiler be hydrostatically tested to after completion of boiler boiling out?
• What two types of reduction gear teeth are in use today on propulsion reduction gears?
• What effect does adjusting the spring force of a regulator have on fuel oil pressure?
• Which type of strainer is designed to house two single element filters?
• Which series provides information about minimum requirements for advancement to each pay grade within each rating?
• What is the term for the amount by which the temperature of superheated steam exceeds the temperature of saturated steam at the same pressure?
• What potentially dangerous condition might result from improper lubrication of gear couplings?
• Who is responsible for maintaining effective communication within the engineering department?
• Who is responsible for the key to the lock securing the throttles when the ship is docked?
• What type of circulation are most modern naval boilers designed for?
• What does the acronym APL stand for?
• What advantage does a locked-train reduction gear have?
• Which series lists all current training manuals and courses?
• Which type of refractory is best suited for high-temperature applications?
• How often are routine boiler water samples taken?
• What does the term "stop-check valve" refer to?
• What are two types of reduction gears commonly used in auxiliary turbines?
• In the moving blades of an impulse turbine, steam loses velocity and pressure does what?
• Who is responsible for administering the hydrazine/morpholine lay-up?
• Under what condition is the industrial hydrazine/morpholine lay-up considered lost?
• What is defined as the quantity of heat required to raise the temperature of 1 pound of water through 1 degree on the Fahrenheit scale?
• What is the primary advantage of a needle valve?
• What is the primary purpose of performing a boil-out procedure in naval boilers?
• Which method is generally employed to tighten labyrinth packing?
• What type of refractory is used for the innermost layer of the firebox furnace?
• What is the maximum allowable RPM differential on operating steam force draft blowers?
• Which type of energy is primarily associated with the heat generated by friction?
• What maintenance document typically records the condition and inspections of reduction gears?
• How does the insulating value of firebrick compare to that of insulating block?
• What is the time limit on a sodium nitrite wet lay-up?
• What is the recommended action for boiler lay-ups when transitioning to hydrazine?
• What are the three end points a steaming boiler has?
• What is caused by steaming the boiler with a dry tube?
• The use of a compensating relay in boiler controls helps to achieve which of the following?
• What initial reaction occurs between pure oxygen-free water and iron in boiler water after light-off?
• What term describes a uniform loss of tube metal over a large external area?
• What are the two major hardness constituents in boiler water that contribute to scale?
• Where is the desuperheater typically located?
• How far must a butterfly valve be rotated to open or close the valve?
• Who is responsible for inspecting the condition of sprayer plates and nozzles?
• Which type of boiler inspection is most critical for determining the need for repairs?
• When boiler tubes are removed, what is sent to the Type Commander (TYCOM) along with a report of findings?
• How many pounds of sodium metasilicate is required per 1000 gallons of feed water during the boil-out procedure?
• Who must authorize the removal of inspection plates, connections, fittings, or covers from the reduction gear casing?
• What is one benefit of cleaner burning of residual fuel in steam atomization?
• How often should hot air lay-up installations be inspected?
• What NSTM covers propulsion and SSTG turbines?
• What is the primary purpose of a check valve in marine applications?
• Where can procedures for cleaning contaminated fuel oil storage and service tanks be found?
• How long should an atomizer barrel be cooled before disassembly?
• At which point in the basic steam cycle is thermal energy transformed into mechanical energy?
• What type of anchors are specifically used for castable or plastic refractory?
• What is the maximum moisture content allowed in an oil sample drawn from a centrifugal compressor?
• What must be known to calculate the required amount of descaling solution for a dishwashing machine?
• What does the term singled-up refer to when dealing with propulsion turbines?
• Which device measures the pressure differential across the burner opening and develops a loading signal proportional to the rate of airflow per burner?
• What is the Ship's Configuration Change form number?
• What best defines the term 'energy'?
• In an automatic boiler control system, what does the system compare the measured value to?
• What is accomplished by adjusting the handwheel on the compensating relay in automatic boiler controls?
• Which type of air-powered chisel is used to cut the old tube flush with the drum or header?
• What is a primary cause of dissolved oxygen corrosion in boilers?
• What is the maximum temperature an insulating block can withstand?
• A boiler test shall be conducted with a boiler load change of 70% in 45 seconds, ranging from 15 to what % of full boiler power?
• What is a single stage impulse turbine usually called?
• How should mortared firebricks be tapped into place after laying?
• What is the typical consequence of not adequately maintaining boiler water quality?
• At what normal interval are main engine turbine bearings measured for wear?
• Permission to open any access to the main engine reduction gears must be obtained from whom?
• What is the primary function of the dry pipe in the steam drum?
• What is the purpose of the diffuser in an air register?
• What is the primary function of the atomizer in main propulsion boilers?
• All safety valves of each boiler shall be tested annually in accordance with what guidelines?
• What type of pressure compressors are categorized into low, medium, and high pressure?
• For what purpose are smoke periscopes fitted on naval boilers?
• Which block in NAVSUP Form 1250 contains information about the item description?
• Why are all navy boilers laid-up when idle for more than 24 hours?
• What device prevents rotation of the propeller during a casualty?
• What is the required hydrostatic test pressure after the replacement of certain boiler components?
• Which of the following best describes the primary function of a safety valve?
• What is the greatest concern from the safety standpoint if fuel is obtained from outside the military supply system?
• How long is the hydrazine/morpholine lay-up effective for?
• On a D-type boiler, what are the types of tubes it should have?
• Which systems do not use corrugated ribbon packing?
• Which component within the general regulator combustion control system develops a demand signal to maintain the boiler at a desired standard?
• Define the term K-factor as it relates to reduction gears?
• The corresponding pressure for a liquid boiling at saturation temperature is known as what?
• What is a common misconception about boiler explosions?
• Is it permissible to use shore steam for steam atomization?
• What term is used when water and steam reach a point where they are no longer distinguishable and no further changes can occur with added heat or pressure?
• Which type of fueling system has been adopted by NATO as the standard method for refueling at sea?
• Which law of thermodynamics states that total energy in a closed system remains constant?
• Which formula converts heat to work?
• Which device is used to measure the flow of fuel oil in the system?
• Which of the following describes the primary reason for the use of economizers in steam systems?
• What is the cooling source for the inline desuperheater?
• What type of valve is used to make relatively fine adjustments?
• How often should a hot air lay-up installation be inspected?
• What does the term 'static pressure' refer to in boiler operations?
• What is one of the primary publications for shipboard use in identifying material and also provides information on how much of what material to stock aboard ship?
• What is the frequency of blowing tubes on a steaming boiler?
• In control systems, what is the set point?
• Which medium is used to cool the stem tube during engine operation?
• What is the standard size of firebrick used in boiler construction?
• What type of document is the Engineering Bell Book classified as?
• Which type of check valve features a disk that moves in an arc to open or close the valve?
• Who signs and dates the PMS Cycle schedule?
• What does the 'Flank' speed designation generally indicate in a naval context?
• Before entering the boiler drums or firebox, the boiler must be certified to be what?
• The required bell when belling boiler tubes up to but not including 2 inches OD is not less than 1/16" but must not exceed how many inches?
• The drum shaft on an electrohydraulic winch is normally driven by what?
• What is typically used to measure the temperature within a boiler?
• What is the minimum water temperature used for hydrostatic testing?
• How long should castable be allowed to set before it is discarded if not used?
• What hydrostatic test methods utilize the boiler's steady state operating pressure?
• What on the BD is an indication of unburned fuel vapors within the firebox?
• Which NSTM provides general information on all types of propellers?
• Who typically performs the ten year reduction gear inspection?
• What is the mode of heat transfer that occurs by transmission of heat by the circulation of a liquid or a gas?
• Which automatic boiler component must be adjusted prior to conducting a boiler soot blow?
• Which Personnel Qualification Standards (PQS) section is termed the 300 series?
• What is the typical allowable thrust clearance end play on an auxiliary turbine?
• What does the Main Propulsion Assistant (MPA) handle?
• What is the primary role of the Engineering Officer of the Watch (EOOW)?
• When setting handhole plates for hydrostatic testing, to what degree should the handhole nut be tightened?
• When fitting newly installed boiler generating tubes, what is the first step in the process?
• How many foot pounds per second does a 3 horsepower engine generate?
• What controls the maximum lift of the disk on a stop check valve?
• What must be done when the humidity indicator cards show humidity levels over 50 percent?
• In which turbine are the astern turbine elements located?
• What must be done prior to starting a boiler?
• Soot blowers now in service may be classified into what two general types?
• For how many years must operating logs be maintained according to procedures?
• A flume not larger than how many feet emitting from the safety exhaust port is the maximum permissible boiler safety valve leakage?
• What is the most common type of stop valve?
• What is the definition of a Curtis stage turbine?
• What is the potential energy of an object that weighs 5 pounds and is held 20 feet off the ground?
• What prevents gate valves used in high-pressure steam systems from binding?
• Which tool is used to check the size of atomizer sprayer plate orifices?
• What is the maximum number of successive lifts allowed, according to PMS procedures, before a valve cool down is required?
• How frequently should the power-driven tube cleaner be lubricated while in operation?
• What purpose do stack rain gutters serve?
• When measuring a manhole seat with a feeler gauge, what is the maximum taper allowed?
• What hydrostatic pressure is applied to test the fueling-at-sea hose?
• What must the authorizing officer notify about in progress tag-outs to ensure that they are fully cognizant of the extent of the tag-out and the status of the material condition of the unit?
• Once every how many hours of boiler operation must burner barrels be hydrostatically tested?
• What is the primary function of refractory material in a boiler?
• What are the two forms of mechanical energy?
• What is the definition of specific heat?
• How many foot pounds of work per second does one horsepower equate to?
• At what rate are steam soot blower elements rotated?
• What is used on non-condensing turbines to protect the casing from excessive pressure?
• How is continuous drainage of the soot blower piping system achieved?
• What must be maintained during the boiling out process of a newly erected boiler?
• What is the minimum steam drum pressure on an operating boiler?
• How long must the atomizer barrel be cooled after removal from the burner assembly before disassembly?
• Which factor is critical to monitor in a desiccant lay-up to ensure its effectiveness?
• Which type of boiler tube damage is characterized by metal loss occurring in bands or stripes?
• Which publication provides general information on threaded fasteners?
• What does PMS stand for in the context of maintenance?
• Which form must be used to order a repair part when no NSN can be determined?
• Which Personnel Qualification Standards (PQS) section is termed the 100 series?
• What is the standard for ensuring gears are operationally sound during maintenance checks?
• What is the minimum steam drum pressure on an operating boiler?
• What two sheets of steel make up the construction of the steam drum?
• Which term refers to evaporated water that is discharged from the ship distilling plant?
• Which NSTM chapter contains general information on various automatic boiler control systems?
• What type of hazard does soot create?
• What determines the output of an escapement valve in automatic boiler controls?
• What causes foaming in a boiler during operation?
• What is the maximum time limit for a nitrogen blanket lay-up?
• What material are oil deflectors manufactured from?
• How frequently is boiler flex testing conducted in accordance with PMS?
• Which type of plug is typically used for plugging boiler tubes?
• When measuring a handhole seat with a feeler gauge, what is the maximum allowed taper?
• In reference to main propulsion boilers and fittings, what are the two types of atomizers used with main propulsion boilers?
• What type of information does the Engineering Department Organization Manual (EDORM) contain?
• Why is it important to maintain temperature when conducting thrust bearing measurements?
• What type of mechanism is commonly used in shipboard steering systems?
• What is the term for the loss of firebrick through cracking and subsequent breaking or crumbling?
• What purpose do the generating tubes serve in a boiler?
• What type of tile is made of silicon carbide?
• What is the maximum permissible time limit for a hot deaerated fill lay-up?
• What is the primary purpose of a speed-limiting governor in auxiliary turbines?
• Fuel tank air escape outlets are fitted with flash screens of what mesh size?
• What increases engine backlash?
• Which type of grooving that causes metal loss occurs at horizontal tubes in the boiler?
• At what vacuum is the generator brought up to speed after starting an SSTG?
• What component is responsible for reducing the steam temperature of saturated steam in the 150 psig steam system?
• The term total float clearance refers to what?
• For an SSTG with helical gears, what is the necessary reduction gear tooth contact?
• What will be the effect on operating steam plant if the airflow transmitter fails?
• What is one major consequence of inadequate tooth contact in reduction gears?
• At what process stage is the steam converted back to water in a condenser?
• What is used to indicate that a desiccant lay-up is within requirements?
• When dumping EDTA to the bilge, what is added to the bilge water to neutralize the EDTA corrosive properties?
• What should be done to all blowdown valves after a 15-minute cooldown period?
• Who is primarily responsible for maintaining the operational state of auxiliary systems while at port?
• Which component reduces the steam temperature of saturated steam in a 150 psig steam system?
• Which part of a propulsion system aids in the radial positioning of turbine components?
• How much desiccant is needed for a proper dry lay-up?
• During hydrostatic testing, up to which pressure may leaking joints be tapped to assist in seating the handhole plate?
• Which type of ahead speed does the symbol "II" indicate when logged in the Engineer's Bell Book?
• What type of corrosive products may form on the brickwork due to heavy and prolonged seawater contamination of the fuel oil?
• In which publication can general information about compressed air systems be found?
• What are the hydrostatic test methods that utilize design pressure?
• What is the auxiliary exhaust pressure in the engineering plant during normal operations?
• At least once every how many months must one fuel oil service tank per compartment be inspected?
• What class of valves does a gate valve represent?
• What is the main purpose of the Naval Ship's Technical Manual (NSTM)?
• What is an alternative bearing composition of a soot blower bearing besides 25% Chrome and 20% Nickel?
• What documentation is essential for describing production processes according to naval maintenance practices?
• Detailed information on reduction gear security can be found in which NSTM?
• What does it mean when two or more boilers are operating in parallel?
• How long should the boiler flex up ramp or down ramp last, according to the throttleman's task?
• What is the definition of mechanical energy?
• What is the purpose of a Boat Report?
• What is the primary function of the boiler sliding feet?
• Main reduction gears are inspected by NAVSEA at what interval?
• Disposal of sodium nitrite shall be IAW what NSTM?
• What type of action does a Job Sequence Number (JSN) typically represent?
• What does Force times distance (F x D) equal?
• When performing maintenance, which program helps in tracking the completion of tasks?
• What term is used to describe a quantity or condition varied by a control system?
• Water tracking and what other condition typically occur at the header ends of water wall tubes?
• To what percent of normal boiler operating pressure must rerolled superheated tubes be hydrostatically tested?
• What type of gauge is used to measure the clearance between the high pressure and low pressure turbines?
• If mercury-filled thermometers are used in the fireroom, what action must be taken?
• How long is it permissible to interrupt a steam or nitrogen blanket lay-up for emergency repairs?
• At what pressure is the master air lock trip valve set in automatic boiler controls?
• Do header type boilers have a water drum?
• During a gear maintenance inspection, what is crucial to ensure when examining oil spray nozzles?
• What is the function of Engineering Standing Orders?
• Boiler tubes that are 2 inches outside diameter or greater must project into drums or headers at least how many inches?
• How many hours are necessary to bring a boiler under a steam blanket online?
• During a heavy black smoke condition, the burner flame will be what color?
• During inspections, which areas of a propulsion turbine require special attention for potential wear?
• What is the only acceptable criterion for an operating MRG lube oil sample?
• How does the maintenance of PMS Quarterly schedules contribute to ship operations?
• Which temperature is an SSTG auxiliary condenser considered a hot condenser?
• All major weld repairs to boiler headers require a hydrostatic test at what percent of boiler design pressure?
• Combustion is an example of what type of energy?
• What is the required percentage of the EDTA solution when treating a boiler with EDTA waterside cleaning chemicals?
• An exploratory block is defined as a section of not more than how many tubes wide?
• What is the most common material defect found in boiler tubes?