Ohio Boiler Licensing Practice Exam

Browse all practice questions for the Ohio Boiler Licensing Practice Exam. Search by topic, open any question and review its full explanation, then test yourself in the practice quiz.

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How to Effectively Check for Leakage in a Pneumatic Feedwater Regulating SystemIn a pneumatic feedwater regulating system, how can control lines be checked for leakage?If superheater pressure gets too high, activate the safety valve to relieve excess pressureWhat action should be taken if the superheater pressure exceeds safe levels?Learn About Effective Methods for Softening WaterWhat is one common method to soften water besides heating it?Learn about the impact of temperature rise on superheater efficiencyHow much efficiency gain is produced by each 10-degree temperature rise in a superheater?Neglecting Boiler Maintenance Can Lead to Serious RisksWhat could be a consequence of failing to properly maintain a boiler?Neglecting Water Treatment Can Drastically Shorten Boiler LifespanWhat is a potential consequence of neglecting water treatment in boilers?Soot Accumulation: Understanding the Hidden Consequences of Incomplete Combustion in BoilersWhat is a common consequence of incomplete combustion in a boiler?Understand the Minimum Heating Surface Requirement for Boiler Operation in OhioWhat is the minimum square footage of heating surface at which you must have a license to operate the boiler?Understanding Cutout in Low Pressure Boiler OperationsOn a low pressure boiler, what does cutout equal?Understanding the Best Steam Trap for Low-Pressure Heating SystemsWhich type of steam trap is most commonly used in a low-pressure heating system?Understanding the Importance of Flue Gas Analysis for BoilersWhat is a method to check the relative quantity of air being supplied to the furnace?Understanding the Role of Drum Level in Boiler SystemsIn a three-element feedwater regulating system, which component serves as the analog input?Understanding the Role of Injectors in Steam Boiler SystemsA type of pump that uses the velocity of steam against the mass of water is known as what?Understanding the Urgency of Addressing Boiler Tube LeaksWhat is your primary concern if you discover a boiler tube leak?Understanding What Keeps Your Fuel Oil Burner Running SmoothlyWhat would not cause your fuel oil burner to go out?Understanding When to Renew Your Boiler LicenseWhen should your boiler license be renewed each year?Understanding When Your Water Level Indicator Requires MaintenanceWhat condition indicates that a water level indicator may need maintenance?What to Do When Your Boiler is Priming ExcessivelyWhat action should you take if a boiler is priming so badly that you cannot see the water level?Why ensuring adequate superheat temperature is the key safety measure in superheated boiler operationsWhich safety measure is critical in superheated boiler operations?Why Fuel Oils Are a Cleaner Choice Than CoalWhat is a significant advantage of using fuel oils over coal?
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  • When lighting a low pressure gas burner on a LP boiler, what is the last step?
  • To keep an electrostatic precipitator working effectively, you should?
  • Which type of boiler requires the least square footage of heating surface for 1 hp?
  • What type of valve is typically placed between the condenser and the turbine when operating in condensing mode?
  • What limits the amount of coal that can be burned per square foot of grate surface?
  • An infrared sensor uses what type of scanning device to detect a flame?
  • What is a common symptom of a malfunctioning fuel oil burner?
  • What should not be done to valves connected to a water column while the boiler is in operation?
  • The performance and lifespan of a centrifugal pump depend majorly on what components?
  • When starting a fire in a coal-fired boiler with chain grates or traveling grates, how much coal should be on the grates?
  • Which type of steam trap contains both a piston and a valve?
  • What type of feedwater regulator is equipped with a fuel shutoff feature?
  • Which valve should be checked first if a boiler is experiencing abnormal water levels?
  • What is the term used for a gauge that reads higher than the actual boiler pressure?
  • If your boiler license expires, how long do you have to renew it before you must retest?
  • What condition does graphitization cause in boiler steel?
  • Which water test utilizes a color comparison method?
  • What is a critical reason for monitoring steam quality in a superheated boiler?
  • Which action indicates proper maintenance of a gauge glass?
  • Which of the following best describes the main purpose of a drain valve in a steam system?
  • How are fuel oil strainers normally configured in a system?
  • When designing a boiler, special consideration must be given to heat transmission by?
  • What type of water can be added to a boiler without treating it first?
  • Your economizer raises the temperature of the feedwater by 10 degrees. What is the efficiency rate increase associated with this?
  • What is the maximum allowable working pressure (MAWP) in relation to a boiler's operation?
  • If a boiler pressure is greater than or equal to 400 psig, what is required?
  • Which type of boiler is the most economical to build?
  • A lubrication with a low viscosity is usually adapted for what type of use?
  • What is the first step to take when shutting down a steam turbine?
  • What equipment is primarily used to reduce sulfur dioxide (SO2) emissions?
  • What is the minimum percentage of oxygen that must be present in a confined space before entering?
  • When banking a fuel oil-fired boiler, what should you do?
  • If a steam boiler is being taken out of service, what step should be taken first?
  • How can temporary hardness be removed from water?
  • What is the maximum pressure for using a seatless-type blowdown valve?
  • What is the last step to be performed when shutting down a boiler?
  • How often should the oil burner be cleaned on a high pressure boiler when firing heavy oils?
  • What should be the valve configuration when starting a centrifugal pump?
  • A centrifugal turbine pump is primarily characterized by what feature?
  • What happens if condensation is not properly drained from a steam system?
  • Which instrument is not used to measure the quantity of combustion air?
  • The efficiency of a spray pond or cooling tower is primarily based on which environmental factor?
  • What is the primary purpose of a water screen in a boiler?
  • What compound is produced from the reaction between sodium sulfite and oxygen?
  • What property should lubricating oil in a turbine not possess?
  • What grade of fuel oil may be ignited by an electric spark from electrodes powered by an ignition transformer?
  • Gas flames have a tendency to pulsate; this can be eliminated by?
  • The frequency of ash removal in a coal-fired furnace with dumping grates should be determined by what factor?
  • In a surface condenser system, what is the primary function of the hot well?
  • What is the satisfactory concentration of chlorides in boiler water compared to feedwater in low and medium pressure boilers?
  • If a high-pressure boiler is operating below its MAWP, where should the pointer on the pressure gauge be?
  • The energy needed to fill the suction side of a centrifugal pump and overcome friction and flow losses is referred to as what type of head?
  • What type of steam turbine has steam take-offs prior to going to the condenser?
  • When taking a boiler out of service, what is one thing you do NOT do?
  • To prevent what adverse condition should the pH of water in the cooling system be kept above 7?
  • Why is it important to maintain proper water levels in a boiler?
  • In a steam system, what is the impact of air presence on heat transfer efficiency?
  • At what temperature range should cooling water be added to turbine bearings that are generating heat?
  • What can cause vibrations in a turbine?
  • What function does a pressure gauge serve in a boiler system?
  • Which type of water treatment is most effective for continuous operation boilers?
  • What is the temperature limit for preheated air when operating a stoker-fired boiler?
  • What can occur if the pH level in water becomes too low in a cooling system?
  • What is the only way to know for sure how much carbon monoxide you have coming out of the stack?
  • For how long may an operator be away from the boiler without risking safety?
  • When testing a safety valve manually on a low-pressure boiler, how long do you hold it open?
  • What is blistering of boiler metal?
  • What should be done before relighting a pulverized coal-fired boiler after a flame failure?
  • What is not a type of firetube boiler?
  • How does the efficiency of a boiler change with a rise in feedwater temperature?
  • What is the minimum pressure above which the exhaust side of a steam turbine may be protected by a safety valve or rupture disc?
  • What does the term "net positive suction head" refer to in relation to a centrifugal pump?
  • When adjusting the firing rate due to foaming, what should also be considered?
  • When taking a boiler offline, what is the first step?
  • When comparing fuel oils to coal, what is true?
  • What condition can oils and solids accumulation on the water surface in the boiler lead to?
  • What are the recommended percentages of underfire air versus overfire air when using a stoker coal-fired boiler?
  • What is the maximum recommended concentration of calcium chloride in a boiler when the feedwater averages 6 ppm?
  • What is true about welding performed on boilers?
  • What is the first thing that must be done when starting up a brand new boiler?
  • What is the role of the condensate pump in a surface condenser?
  • What is an example of a cogeneration system?
  • What must you do if your boiler license is still valid and you lose it?
  • What type of feedwater regulator is considered best for a boiler that experiences wide pressure and load swings?
  • Where must your boiler license be displayed?
  • What should be done if a watertube boiler experiences a tube rupture?
  • On what type of boiler are sootblowers primarily used?
  • What is true about an industrial boiler as compared to a utility boiler?
  • Which flow measurement device employs a float within a tapered glass tube?
  • If a high pressure boiler operates at 100 psig, what should the blowback of the safety valve be?
  • What is a true statement about the operation of induced draft cooling towers?
  • How often are sootblowers for economizers and air preheaters used when firing coal?
  • In which situation is copper tubing not suitable for steam service?
  • Which of the following is a slow deformation of metal over time under continual stress and high temperature?
  • How much of the total steam produced by a boiler is relieved by a superheater safety valve?
  • Which factor is crucial for preventing corrosion in boiler systems?
  • During an accumulation test, the boiler is fired at which of the following?
  • What is a likely consequence of ignoring a boiler tube leak?
  • What is the primary difference between a high pressure gas burner and a low pressure gas burner?
  • What happens to the ID of a tube when a new tube is installed in a firetube boiler?
  • What is the maximum allowable blowback on a safety relief valve set for 100 psig?
  • What principle describes the operation of a centrifugal pump?
  • A steam turbine that operates at 500 psi is considered what type of pressure?
  • What factor must be considered when selecting materials for the construction of a flue gas scrubber system?
  • What advantage does a filter baghouse have over an electrostatic precipitator in its operation?
  • What should you not lock out when a boiler is shut down for inspection?
  • An impulse turbine utilizing one row of stationary steam nozzles to drive two rows of rotating blades is called what?
  • Which of the following components is not typically used in the protection of the exhaust side of a steam turbine?
  • What is a key benefit of using a zeolite softener for water treatment?
  • Before operating manually controlled sootblowers on a boiler, what should be done first?
  • During boiler maintenance, what is the primary risk to personnel?
  • What action must be taken when a boiler is put into service?
  • What is one of the main purposes of a valve in a steam system?
  • What can occur if water accumulates in a steam system?
  • If a priming situation occurs, what should be done?
  • What kind of steam is used in a feedwater heater if extraction steam from a turbine is utilized?
  • Which type of draft creates pressure that is lower than atmospheric pressure in the furnace?
  • What is another name for a low gas pressure switch?
  • In which type of draft system is chimney design considered the least important?
  • How many square feet of heating surface are required to produce 1 hp in a watertube boiler?
  • What is the minimum steam flow that should be maintained through the superheater?
  • What is the main purpose of monitoring boiler water levels?
  • What material is typically recommended for low-pressure steam piping?
  • What is a reason the state can take your boiler license away?
  • How should the pressure switch be installed on a low pressure boiler?
  • What is the minimum blowback on a safety valve that pops at 250 psig?
  • What property should lube oil have at temperatures between 325 to 350 degrees?
  • What is the minimum frequency for cleaning a strainer that protects the automatic makeup feeder in a low pressure boiler?
  • What controls the flow of natural gas to the gas burner to ensure the proper combustion rate?
  • What can excessive ash buildup in a fuel oil burner lead to?
  • What supplies the condensate pump on a surface condenser?
  • Which statement is true regarding the operation of an overfeed stoker?
  • What is an indicator of excessive alkalinity in boiler water?
  • What determines the need for a safety valve on a steam turbine?
  • What condition can occur in a boiler under stress with high alkalinity maintained?
  • If the tubes in a boiler are expanded during installation, what will be true?
  • What should happen if you suddenly lose the ID fan on a balanced draft boiler installation equipped with interlocks?
  • When should sootblowers for heating surfaces be utilized when firing coal?
  • When a steam turbine operates in a condensing manner, what is the primary purpose of the atmospheric relief valve?
  • What are the potential results of flame impingement on boiler tubes?
  • For what reason is it important for lube oil to not give off volatile vapors?
  • What is the purpose of using copper sulfate in cooling towers?
  • What is one purpose of the feedwater tank in a boiler system?
  • Which condition caused by improper water treatment may be corrected by maintaining proper alkalinity?
  • Where does water exit the blowdown tank?
  • What items can an electronic flue gas analyzer read?
  • What action is recommended if there is a fire in the pulverizer?
  • Utility boilers are primarily used to produce?
  • What is the first step to take when warming up a tubular gauge glass?
  • Which of the following is NOT a purpose of the feedwater tank?
  • What system is directly piped into your boiler flash tank?
  • What is the maximum acceptable level of dissolved solids in steam supplied to a steam turbine?
  • According to ASME code, how often should boiler blowdown occur if no water analysis is made?
  • What is not a type of automatic combustion control system?
  • What is the minimum temperature of water to be used for a hydrostatic test?
  • What is the cheapest and easiest form of water treatment?
  • What is a protrusion on a tube referred to as?
  • What pH value indicates alkalinity in water?
  • Which non-destructive testing method is used to expose surface and near-surface flaws using a dust of iron particles?
  • What is the draft condition recommended when using soot blowers?
  • What is one function that a bottom blowdown does not perform?
  • How do steam separators function in a steam system?
  • What is the minimum size of piping that can be used on a pressure gauge?
  • What is a consequence of using cold city water as makeup in a low pressure boiler system?
  • What is the percentage of excess air needed for complete combustion when using a fuel oil burner?
  • What is cast iron or ductile iron pipe primarily used for?
  • What limitations does a pump that must draw its suction from below face?
  • Which test is commonly used to measure hardness in water?
  • Which type of heat transfer takes place by actual physical contact, from molecule to molecule, without displacing the molecules?
  • What is an action you should avoid during a boiler startup?
  • When laying up a boiler in a dry state, which substance is NOT used as a desiccant?
  • How many square feet of heating surface are required to produce 1 hp in a vertical firetube boiler?
  • When used on a boiler, what is the minimum sized steel pipe that can be utilized?
  • What is a potential consequence of not maintaining a minimum steam flow through the superheater?
  • If laying up a boiler for a short time, what concentration of caustic soda should be maintained in the boiler water?
  • If a boiler carries a large slug of water over into the steam, this condition is termed what?
  • What is the key to achieving smokeless combustion?
  • What should be the minimum air flow during the pre-purge of a gas or oil fired boiler?
  • Which is a common safety feature in a boiler system?
  • Where must a drain valve be installed in relation to the main steam line?
  • What material is typically used to line the interior of a furnace?
  • What device is used to prevent overpressure in a steam turbine system?
  • Considering the limitation on materials of construction of a steam turbine, what is the maximum temperature of steam that may be used?
  • How long does it typically take for the boiler water level to drop from half a sight glass to no water showing?
  • How often should the flame scanner be tested?
  • What component in a cooling tower primarily assists with the exchange of heat with the atmosphere?
  • For optimal performance in a fluidized bed coal boiler, the coal should be crushed to what size or smaller?
  • When the water level in a steam boiler is proven to be low, what is the first step?
  • What is the correct procedure for cleaning a turbine oil cooler?
  • What does the operation of a thermostatic steam trap depend on?
  • To raise the pH of boiler water, what should be added?
  • If you are found in violation of licensing rules, what is the first warning you will receive?
  • What is the pressure on a low pressure gas burner?
  • What is the primary role of a steam trap in a steam system?
  • What is the primary purpose of silica gel during a dry layup?
  • How can maintenance of an electrostatic precipitator be kept to a minimum?
  • If a closed feedwater heater is functioning properly, what should be the temperature of the feedwater as it exits the heater?
  • Which type of pump is best suited for use with the fuel oil burner system?
  • What happens when water is added to the boiler?
  • How can you find the water level if the gauge glass is broken?
  • A well-maintained wet scrubber can absorb what percentage of SO2 in the flue gas?
  • How often should the makeup water feeder in a low pressure boiler be blown down?
  • What key aspect does a pigtail siphon provide in boiler instrumentation?
  • If a safety valve is set on a 50 psi boiler system, what is the maximum pressure that may develop during safety valve blowdown?
  • Calcium and magnesium are removed by which external water treatment process that can be regenerated using sodium chloride?
  • When is it necessary to perform a pressure test on a boiler?
  • What parts make up the heating surface in a scotch marine firetube boiler?
  • When activating an induced draft cooling tower, what is the last step in the procedure?
  • What can bad washers in a low-pressure boiler's gauge glass cause?
  • For a low pressure boiler, what does a data plate marked 6900 lb indicate for a safety valve?
  • What is the primary purpose of a boiler's tri-cock?
  • What is the primary function of a microcomputer burner control system (MBCS)?
  • When upgrading your boiler license to a higher level, what must be done with the previous license?
  • Which chemical is commonly used to manage algae accumulation in cooling towers?
  • What is the most economical method for partially loading a small steam turbine?
  • Which chemical is typically used to neutralize acidity in boiler treatment?
  • When should a non-return valve be opened when putting a boiler online?
  • What cannot be used to determine the relative air quantity delivered to the furnace during normal boiler operation?
  • What is the proper temperature range for turbine bearings during normal operation?
  • What is the desirable condition for operation of a boiler with a superheater for maximum economy?
  • What fan blade design is most effective in preventing erosion from flyash particles in flue gas?
  • What is the best way to achieve good water treatment results?
  • When preparing a boiler for long-term layup, what material is commonly placed inside the boiler?
  • What is the primary function of a dashpot in a steam turbine governor?
  • Under what condition must a boiler have two bottom blowdown valves?
  • What does the term 'blowdown' refer to in the context of boiler operation?
  • What common type of expansion joint is used in steam distribution systems?
  • How many square feet of heating surface are required to produce 1 hp in a HRT firetube boiler?
  • What is the term for the process of adding water to enhance combustion in a coal-fired boiler?
  • Which factor is crucial before performing a hydrostatic test on a boiler?
  • Which of the following is true regarding a boiler pressure mercury switch?
  • A boiler is considered an industrial boiler when?
  • In a low-pressure boiler using a screw-feed retort stoker, what area is NOT considered a combustion zone?
  • What is a common practice to optimize the performance of cooling towers?
  • What is the purpose of a flame scanner in a boiler?
  • How quickly must a flame detector in an industrial boiler detect loss of flame?
  • What is the minimum size of an elliptical manhole on a boiler?
  • Which component is essential for the ignition of fuel oil in a burner system?
  • Which component is essential for draining condensate in a steam system?
  • When the water in a boiler is foaming, how will the water level appear in the gauge glass?
  • Why is it important to maintain a fuel oil burner regularly?
  • In the context of steam turbines, what is the most critical factor to prevent system failures?
  • What is a key difference between a check valve and a non-return valve?
  • When the bottom blowdown valve on the water column is closed and water fills the gauge glass quickly to the center, what does this indicate?
  • What should be done if unusual vibrations are detected in a boiler?
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