3rd Class Stationary Steam Engineer License Practice Test

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Calculating Absolute Pressure from Gauge Pressure in Steam SystemsIf the steam pressure gauge indicates 200 PSIG, what is the absolute pressure?Ceiling strips warn of excessive radial tolerance in steam turbinesWhere would one typically find ceiling strips that warn of excessive radial tolerance?Discover how to prevent vacuum when taking a boiler offlineWhat procedure helps prevent a vacuum when taking a boiler offline?Discovering the Value of a Neutral Solution on the pH ScaleWhat is the value of a neutral solution on the pH scale?Drain blower lines before starting a boiler to ensure safe, efficient combustionBefore using blowers on a boiler, what should be done?How baffles in water tube boilers help keep steam dry and protect the systemBaffles are used in the steam and water drum of water tube boilers to _____.How much does No. 6 fuel oil weigh per gallon and why it matters in boiler operationsApproximately how much does one gallon of No. 6 fuel oil weigh?How to Effectively Reduce Fuel Oil ViscosityTo reduce the viscosity of a fuel oil, what must be done?Understanding Atomization in Pressure Oil Burners for 3rd Class EngineersIn a pressure atomizing fuel oil burner, what component is responsible for atomization of fuel oil?Understanding Heating Value: The Role of Therms in Natural Gas Energy MeasurementThe heating value of natural gas is expressed in which unit?Understanding how an economizer heats feed water in a steam generating plantIn a steam generating plant, the economizer is used to _______?Understanding How Excess Air Affects Combustion EfficiencyHow is the amount of excess air in gases of combustion typically determined?Understanding How Tubes in a Water Tube Boiler Are FastenedHow are the tubes in a water tube boiler typically fastened?Understanding Perfect Combustion in Stationary EngineeringWhat is described as perfect combustion?Understanding Safety Features for High-Pressure Boilers Under ASME CodeAccording to ASME code, a high-pressure boiler with more than 500 square feet of heating surface shall have what safety feature?Understanding Safety Valve Adjustments According to ASME CodeAccording to the ASME Code, the adjusting of safety valves should be done by the _______?Understanding Safety Valve Testing in Boiler SystemsWhen testing a safety valve by hand, the pressure on the boiler should be at least _______% of the safety valve set pressure?Understanding Sensible Heat and Its Role in ThermodynamicsSensible heat is defined as heat that does what?Understanding Superheated Steam: What Every Engineer Should KnowIf a boiler produces 40,000 lb of steam/hr at a pressure of 100 PSI and a steam temperature of 500 degrees Fahrenheit, what type of steam is produced?Understanding the Best Way to Remove Hard Scale in TubesHard scale formed on the inside of tubes is best removed by what method?Understanding the BTU Content of Number 6 Fuel OilWhat is the approximate BTU content of number 6 fuel oil?Understanding the Critical Role of Water Level in Boiler OperationsThe primary purpose of the water level in a boiler is to ensure what?Understanding the Essentials of Complete Combustion: Key FactorsWhat factors are necessary for complete combustion?Understanding the Factors That Influence Boiler EfficiencyWhich factor can directly influence boiler efficiency?Understanding the Importance of a Free Blowing Drain for Battery Boilers with Manhole OpeningsWhat is required for a boiler connected in battery when there is a manhole opening?Understanding the Importance of Air Cock Management When Warming Up a BoilerAccording to the ASME code, what should be done with the air cock when warming up a boiler?Understanding the Importance of Chemically Treating Boiler WaterWhy is boiler water chemically treated?Understanding the Importance of Overspeed Trip Tests for Steam TurbinesThe overspeed trip on a steam turbine should be tested:Understanding the Importance of Regular Bottom Blowdown for BoilersWhat is a consequence of not performing regular bottom blowdown in a boiler?Understanding the Key Elements for Combustion to OccurWhat is required for combustion to occur?Understanding the Maximum BHP Calculation for Water Tube BoilersA water tube boiler has 250 tubes that are 20 ft long and 3 inches in diameter. What is the maximum BHP it will produce if it generates one BHP for every 10 sq ft of heating surface?Understanding the Maximum Size of Bottom Blowdown Valves on BoilersThe maximum size bottom blowdown valve on a boiler is what dimension?Understanding the Pressure Limit of Cast Iron Water Columns for Steam SystemsCast iron water columns may be used for pressures up to how many psi?Understanding the Proper Use of Soot Blowers for Boiler MaintenanceBefore using soot blowers, what must be done?Understanding the Reasons Behind High Combustion Gas TemperaturesThe probable cause of an increase in temperature of combustion gases at the boiler outlet is likely what?Understanding the Role of a Glass Gauge in Boiler OperationsWhat is the purpose of a glass gauge in a boiler?Understanding the Role of a Heat Exchanger in Steam SystemsWhat is the purpose of a heat exchanger in a steam system?Understanding the Role of Bypass Dampers in Air HeatersWhat is the function of a bypass damper on an air heater?Understanding the Role of Combustion Control in BoilersWhat does a combustion control on a boiler primarily regulate?Understanding the Role of Try Cocks in Steam Boiler SafetyWhat are try cocks used for?Understanding the Role of Vents in Open Feedwater HeatersWhat is the purpose of a vent on an open feedwater heater?Understanding the Types of Draft Used in Power PlantsWhat are the three types of draft used in power plants?What defines a surface condenser and how it works in steam systemsWhat characterizes a surface condenser?Why automatic toilets ignite the burner in low fire for safer steam boiler startupAutomatic toilets are programmed to ignite the burner ______.Why controlling draft in a burner system is essentialWhy is draft carefully controlled in a burner system?
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  • The boiling point of water will do what with an increase in pressure?
  • A boiler evaporates 48,000 lb of steam/hr at a rate of 12 lb of steam/sq ft of heating surface. The boiler has _______ square feet of heating surface.
  • A broken baffle on a water tube boiler would cause a/an _______?
  • A chimney temperature of 250 degrees Fahrenheit above steam temperature indicates:
  • Which safety device is typically found in steam systems?
  • Why is controlling the air-fuel ratio critical in boiler operation?
  • What type of steam is characterized by being at 250 psia and 400 degrees Fahrenheit?
  • A high CO2 reading in the gases of combustion is a sign of what?
  • Why is periodic blowdown necessary in boiler operations?
  • What should always accompany an engaged glass in high pressure boilers to determine water level?
  • A boiler with 3450 square feet of heating surface designed for 5 square feet of heating surface per BHP has how many horsepower?
  • What must be done after replacing a gauge glass before placing it in service?
  • What is the primary purpose of economizers in power plants?
  • What is the purpose of a desuperheater drain in a steam system?
  • What device is tripped to safely conduct an offline process for steam turbines?
  • A closed feedwater heater is always installed _______.
  • What ensures safe operation of a steam turbine when reaching critical RPM?
  • Increasing the temperature of feed water by 10 degrees Fahrenheit results in what percentage increase in plant efficiency?
  • The most controllable heat loss in a boiler is from the loss of heat in ______.
  • What is a common indicator of a faulty gauge glass?
  • Which of the following is a primary method to reduce emissions from combustion?
  • What are the three most common fuels used in boilers?
  • How many bottom blowdown valves are required on boilers operating at pressures above 100 psi?
  • What are some of the functions of combustion controls during burner operation?
  • Combustion efficiency can be increased when air is:
  • A steam turbine operating at 3600 RPM is set to trip at which RPM?
  • What is a common result of not properly treating boiler feedwater?
  • Before lighting off a boiler during a cold startup, what must the operator check first?
  • A steam turbine exhaust end and condenser are prevented from excess pressure by ________.
  • What is the purpose of a water column in boiler systems?
  • Which component is essential to prevent water hammer in steam systems?
  • Where is the feed water stop valve typically located?
  • How many BTUs are approximately found in 1 cubic foot of natural gas?
  • How is a steam pressure gauge protected against excessive temperature?
  • In which units are steam pressure gauges typically calibrated?
  • What is the primary hazard associated with high CO2 levels during combustion?
  • What type of pump is a reciprocating pump classified as?
  • What characteristic easily identifies a Scotch Marine boiler?
  • What is a common purpose of a hydrostatic test?
  • Which chemical process occurs when feed water enters the boiler?
  • What component of a boiler is primarily affected by spalling?
  • At 212°F, how much water does one boiler horsepower (bhp) evaporate in one hour?
  • The standard for 1 boiler horsepower (bhp) is based on the evaporation of how many pounds of water from and at 212°F?
  • What is the likely consequence of not following proper boiler operation procedures?
  • What is the purpose of the siphon between the boiler and the steam pressure gauge?
  • According to ASME code, how often should the low water fuel cutoff switch be tested by an evaporation test?
  • When is extra heavy steel pipe required on a boiler bottom blowdown line?
  • An oil cooler is commonly used with which component when operating in conjunction with a turbo-generator?
  • When the burner is in high fire, what is at its maximum rate?
  • Which type of valve is primarily used for controlling steam flow?
  • What does oxygen in a boiler drum typically cause?
  • How can chemicals be added to a boiler system?
  • A bottom blowdown is performed on a boiler to achieve what purpose?
  • The range of a pressure gauge should be at least how many times the safety valve setting?
  • Blowers are normally used with which type of boilers?
  • How does snow accumulation on boiler tubes affect thermal efficiency?
  • The _________ on the steam turbine functions as a limit switch.
  • Why is boiler water treatment necessary?
  • When should a water column and gauge glass be blown down normally?
  • How are oxygen and non-condensable gases typically removed from feed water?
  • What is the primary function of the economizer in a steam generating plant?
  • To convert 1 lb of water at 212 °F into steam at atmospheric pressure, how many BTUs are needed?
  • What is the primary function of a safety valve on a boiler?
  • A boiler is operating at 400 PSI, and the safety valve opens at 410 PSI and closes at 398 PSI. What is the blowdown?
  • What is generally used for temperature control in a steam condensing system?
  • In a fire tube boiler, the heat and gases of combustion pass through which of the following?
  • A closed feedwater heater is always installed on which side of the feedwater pump?
  • A steam pressure gauge must have a range of at least how much in comparison to the MAWP?
  • In what units are steam pressure gauges typically calibrated?
  • A sudden rise in chimney temperature without an increase in load indicates what condition?
  • What is the purpose of placing baffles between the tubes of a boiler?
  • What protects sewer lines from pressure and temperature when blowing down a boiler?
  • A valve that requires five 360° turns of the hand wheel to change from fully open to fully closed is classified as what type of valve?
  • What is the primary purpose of a vent on the open feedwater heater?
  • Who is authorized to make repairs on a safety valve?
  • What is determined by a Ringelmann test?
  • What is spalling caused by in a furnace?
  • What is the maximum allowable pressure for a safe operation in high-pressure boilers?
  • If a boiler evaporates 50,000 lbs of steam/hour and 10 pounds of steam is evaporated per square foot, what is the heating surface area?
  • How can the low water fuel cutoff be tested?
  • What is the primary risk associated with not having an effective blowdown process?
  • The steam line going to the blowers is connected to the main what?
  • What does a low-water cutoff device do?
  • The purpose of a burner pressure control is to _____.
  • Under what pressure is it permissible to have one blowdown valve on a boiler?
  • What is sensible heat?
  • Stay bolts are typically used in which type of boiler?
  • A high-pressure boiler operates at a pressure above which of the following PSI levels?
  • When performing a hydrostatic test on a boiler, what must be done to each safety valve?
  • What can cause overheating of tubes on a boiler?
  • When should water walls be blown down?
  • What is the accepted practice concerning the pressure when testing a safety valve by hand?
  • What should you inspect regularly on a steam boiler system?
  • In a condensate return system, what effect does carbon dioxide have?
  • In a duplex reciprocating feed water pump, the steam piston area must be how much larger than the water piston?
  • What is the purpose of the economizer on a boiler?
  • When performing a hydrostatic test on a boiler, what must be done with the safety valve?
  • An economizer located in the path of the gases of combustion increases boiler efficiency by approximately how much for each 10°F rise in feed water temperature?
  • What is required for complete combustion to occur in a boiler?
  • Water wall tubes serve to protect the refractory and do what else?
  • What is the function of baffles in a boiler?
  • What is the pH classification of boiler water with a pH of 11?
  • A safety valve on a boiler pops at what point in relation to working pressure?
  • How much heating surface area does a water tube boiler with a diameter of 3 1/2" and a length of 20' have?
  • What does a boiler equipped with a draft gauge and registering a negative pressure indicate?
  • What is the primary function of a boiler?
  • Compared to fire tube boilers, water tube boilers require?
  • What can cause a bag to develop in an HRT boiler?
  • What is the primary function of a flame rod in a gas pilot system?
  • If a lather is not obtained when performing a soap hardness test, the water sample is:
  • A flame scanner is used to verify what in boiler operations?
  • Which type of valve is known to offer the least resistance to flow?
  • What action should be taken if oil viscosity needs to be decreased for better flow?
  • A steam trap serves what primary function?
  • If the chimney temperature is 250 degrees Fahrenheit higher than the steam and water temperature, the boiler is ______.
  • If the upper connection to a gauge glass is closed, what will the gauge glass show if the boiler has a normal water level?
  • As steam pressure in a boiler increases, what also increases alongside steam and water?
  • Most furnace explosions are attributed to which failure?
  • A gas pressure regulator is used to control the ______.
  • Why is feed water treated chemically before entering the boiler drum?
  • A boiler generating 6000 lb of steam/hr produces how many BTU/hr?
  • Complete combustion occurs when _______?
  • An accumulation of snow on the fireside of a boiler tubes does what?
  • In a surface condenser, what are in direct contact with each other?
  • The purpose of chemically treating feedwater is to do what?
  • On the feed water line, the valve closest to the boiler shell is a _____ valve.
  • At atmospheric pressure, at what temperature does water boil and turn to steam?
  • What is the role of a dry pipe separator in a boiler?
  • Which of the following is an indicator of excessive scale buildup in a water tube boiler?
  • A temperature reading of 80 degrees Celsius is equal to:
  • Which component helps maintain proper air flow in boiler systems?
  • If a motor rated at 25 horsepower is delivering 20 horsepower, what percentage of its capacity is it operating at?
  • How does air requirement relate to the combustion of 1 lb of fuel oil?
  • When a quick opening valve is used as a blowdown valve, where is it located?
  • What is the minimum size for a manhole in a boiler?
  • What could be a consequence of inadequate cooling before boiler maintenance?
  • Water columns are connected to the boiler with a minimum of what pipe size?
  • What happens to the boiling point of water when pressure increases?
  • Which type of steam turbine allows condensate to be reclaimed for use in the system?
  • What prevents condensate from backing up into the steam line on a deaerator?
  • What is the purpose of listing levers on safety valves?
  • A manometer is read in:
  • What are package boilers programmed to do upon start-up?
  • During a blowdown, what is the primary purpose of releasing water from the boiler?
  • What type of maintenance does spalling indicate is needed in a furnace?
  • The Pour point of a fuel oil is ________.
  • What is defined as balanced draft in a combustion system?
  • Which substance is commonly used to control the pH of boiler water?
  • In order to ensure the gauge glass indicates an accurate water level reading, the stationary engineer should:
  • What is the purpose of the safety valve?
  • What instrument is essential for monitoring steam pressure in a boiler?
  • Approximately how much air is required to completely burn 1 lb of fuel oil?
  • Where are sup blowers most commonly found?
  • What is steam at a temperature of 350 degrees Fahrenheit and a pressure of 50 psi categorized as?
  • What is the primary function of a pressure control on a boiler?
  • What is the function of combustion controls on a boiler?
  • A condensate pump is located 75 feet below the feed water heater, and its discharged gauge reads 75 PSI. The pressure at the inlet to the heater is _______ psi.
  • Which safety feature is essential in preventing boiler overpressure?
  • What is the primary purpose of a steam trap?
  • What does the air flow switch at the burner fan housing indicate?
  • If a low-water condition occurs, the operator should first ______.
  • What is the proper way to stop a steam turbine when taking it offline?
  • What is the first step when using a soot blower?
  • A duplex double-acting reciprocating feed water pump has what ratio of steam pistons to water pistons?
  • Which component controls the proper function of the burner in relation to air and fuel?
  • What is drilled in the end of a staybolt to warn of corrosion?
  • The ASME Code recommends that safety valves should be adjusted by which personnel?
  • What does viscosity of fuel oil measure?
  • Three boilers are connected to a common header, each carrying 100 PSI. What would the pressure gauge on the header read?
  • Four basic systems found on boilers are ______.
  • Boilers that are equipped with air heaters and economizers usually have _____ draft fans.
  • What type of steam generation system allows for high pressure operation?
  • How many BTUs are needed to raise the temperature of 1 lb of water from 32°F to 212°F?
  • What is always necessary in the combustion process?
  • At 0 psi, _______ BTUs are necessary to change 1 lb of water from a liquid at 212°F into steam.
  • A thermostatic steam trap opens when which of the following occurs?
  • Where are bottom blowdown lines located in relation to a boiler?
  • Where are downcomer tubes found?
  • When taking over a shift, the first thing to check is the ________.
  • High viscosity fuel oil is challenging to work with because:
  • What effect does oxygen in feed water have on boiler systems?
  • If dry saturated steam at 200 PSI is reduced to 25 psi, what type of steam is it?
  • What should be done to correct a low water condition in a boiler?
  • Which fitting is considered the most important on a boiler?
  • What is a common component in the combustion process?
  • How does the safety valve setting on the steam and water drum compare to that of a superheater safety valve?
  • When may the diameter of a chimney need to be increased?
  • What is the purpose of a dry pipe separator in a steam system?
  • A feed water pump will become steam bound if the water temperature in the open feedwater heater is too _______?
  • When should the overspeed tripping device on a steam turbine be activated?
  • If the burner is firing and there is no water in the gauge glass, what should be done?
  • What is typically monitored to assess the efficiency of a steam boiler?
  • Why is it critical to maintain an adequate oxygen level during combustion?
  • In a water tube boiler, where does the heat and gases of combustion pass?
  • A boiler burning fuel oil and using forced draft requires ________ cubic feet of furnace volume per boiler horsepower.
  • If a boiler is equipped with an automatic non-return valve, it must be located _______?
  • What does a positive pressure reading on a boiler draft gauge indicate?
  • Which type of gauge glasses are used on boilers with pressures exceeding 250 psi?
  • What is the function of a blow-off valve?
  • According to ASME code, what type of safety valve is allowed on a boiler?
  • In a surface condenser, how does the cooling water circulate?
  • With what is an automatic non-return valve typically used?
  • The main purpose of a steam drum in a boiler system is to do what?
  • What is the BTU content of natural gas?
  • What should the steam inlet connections of a condenser have for safety?
  • Extra-heavy pipe must be used on blowdown lines when the steam pressure exceeds what limit?
  • What does a steam trap do during operation?
  • If a boiler is rated at 30,000 lb/hr with a 5% blowdown loss, what is the minimum size feed water pump required to supply this boiler in gal/hr?
  • What must be monitored to prevent a feed water pump from becoming steam bound?
  • The frequency of performing a bottom blowdown is determined by what?
  • Overheating of tubes in a water tube boiler results if _______?
  • A continuous blowdown line is located:
  • Water in a D rating feed water heater is prevented from entering the steam line by what mechanism?
  • A globe valve installed in the feed water line has a pressure from the feed water pump affected in what way?
  • Who should perform safety valve repairs?
  • The heat absorbed by water when changing from liquid to steam at the boiling point is called _______?
  • What is true regarding steam and water in a closed feedwater heater?
  • What should a valve located between the boiler and water column be?
  • How does increased pressure affect the performance of a steam system?
  • What is the term used for carrying over particles of water with the steam?
  • During a boiler inspection, what status should the main steam stop valves be in?
  • ______ draft is produced by a fan located between the boiler and the chimney:
  • What is the recommended action to check the water level on a boiler?
  • Why should a boiler be warmed up slowly during startup?
  • Pressure atomizing burners atomize fuel oil using _______.
  • In coal classification, which term refers to the hardness of the coal?
  • In relation to boiler operation, what does the term 'gagged' refer to?
  • Which type of boiler can operate at higher pressures?
  • What is the instrument used to measure draft in boilers?
  • What is the function of a water column in a boiler?
  • Boilers in a battery equipped with what must have two main steam stop valves and a free-flowing drain between them?
  • What are the three essential components required for combustion?
  • What is the purpose of electrostatic precipitators in power plants?
  • A thermostatic trap opens when which component contracts?
  • What is a primary purpose of using a reducing valve in a steam system?
  • Why is proper sizing of a manhole important?
  • What are the three types of boiler feed water pumps?
  • What might indicate a problem with the gauge glass if it is not displaying the correct water level?
  • The minimum size of a water column blowdown valve is how many inches?
  • What does sensible heat refer to?
  • Before draining a boiler, what should be allowed to cool?
  • What can cause incomplete combustion in a boiler?
  • An accumulation test is primarily used to determine what aspect of a boiler system?
  • What is the consequence of not properly sealing the valve between the boiler and the water column?
  • Circulating water passes through a surface condenser ________.
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