Machinist's Mate (MM) Advancement Practice Test

These questions are part of the practice quiz. Start practicing

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