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Minnesota Special Engineers Boiler Exam Questions and Answers for Boiler Operators, Exams of High Pressure Vessels and Boilers

The questions and answers for the minnesota special engineers boiler exam. It covers various topics related to boiler operations, including signals, evaporation, gauge pressure, fuel requirements, tube mounting, boiler horsepower, low pressure boilers, shift engineer responsibilities, safety devices, and boiler components. Essential for individuals preparing for the minnesota special engineers boiler exam.

Typology: Exams

2023/2024

Available from 04/01/2024

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SPECIAL BOILERS LICENSING EXAM
| MINNESOTA SPECIAL ENGINEER
BOILER EXAM | ALL QUESTIONS
AND CORRECT ANSWERS |
ALREADY GRADED A+ | LATEST
EXAM 2024
A _________ receives a signal representing a variable, such as
temperature, pressure, or flow, and converts that signal into an electrical or
digital signal that is compatible with a digital control system. ------
CORRECT ANSWER---------------transducer
A fan located between the breeching and the stack in a(n) _______. ------
CORRECT ANSWER---------------induced draft fan
Class _______ fires are electrical fires, such as motor or transformer. ------
CORRECT ANSWER---------------C type
A main steam stop valve would most likely be a(n) ____________. ------
CORRECT ANSWER---------------os&y gate valve
The evaporation of 34.5 pounds of water per hour from and 212 degrees F
is defined as ___________. ------CORRECT ANSWER---------------one
boiler horsepower
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Download Minnesota Special Engineers Boiler Exam Questions and Answers for Boiler Operators and more Exams High Pressure Vessels and Boilers in PDF only on Docsity!

SPECIAL BOILERS LICENSING EXAM

| MINNESOTA SPECIAL ENGINEER

BOILER EXAM | ALL QUESTIONS

AND CORRECT ANSWERS |

ALREADY GRADED A+ | LATEST

EXAM 2024

A _________ receives a signal representing a variable, such as temperature, pressure, or flow, and converts that signal into an electrical or digital signal that is compatible with a digital control system. ------ CORRECT ANSWER---------------transducer A fan located between the breeching and the stack in a(n) _______. ------ CORRECT ANSWER---------------induced draft fan Class _______ fires are electrical fires, such as motor or transformer. ------ CORRECT ANSWER---------------C type A main steam stop valve would most likely be a(n) ____________. ------ CORRECT ANSWER---------------os&y gate valve The evaporation of 34.5 pounds of water per hour from and 212 degrees F is defined as ___________. ------CORRECT ANSWER---------------one boiler horsepower

A compound gauge is a pressure gauge that indicates ___________. ------ CORRECT ANSWER---------------vacuum in inches of mercury or pressure in psi on the same gauge When burning No. 6 fuel, a(n) ____________ is required. ------CORRECT ANSWER---------------fuel oil heater A ___________ prevents the flow of boiler water back to the city water supply. ------CORRECT ANSWER---------------backflow preventer The amount of energy in a fuel is the _____________. ------CORRECT ANSWER---------------heating value _____________ is the accumulation of minerals such as calcium and magnesium on boiler heating surfaces. ------CORRECT ANSWER------------- --scale Tubes in a firetube boiler are mounted into the _________ located at the front and rear of the boiler. ------CORRECT ANSWER---------------tube sheet For the purpose of rating boiler horsepower for an Engineers License only, how many square feet of boiler surface shall be equivalent to one boiler horsepower on a boiler? ------CORRECT ANSWER---------------10 Sq. Ft. Heating Surface

A tri indicator would inform the boiler operator of what? ------CORRECT ANSWER---------------The TEMPERATURE of the water, the PRESSURE of the water in PSIG, and the ALTITUDE of water in feet. What is the destructive force in a steam or hot water boiler explosion? ------ CORRECT ANSWER---------------The instant release of energy stored in the water as heat. An ASME approved safety relieve calve used on a hot water boiler is tested at the factory on what? ------CORRECT ANSWER---------------Steam first then hot water. Some of the things you could find on a steam boiler (or hot water boiler) are what? ------CORRECT ANSWER---------------Low water cut off, safety valve or safety relief valve, pressure gauge. What devices would only be found on a steam boiler? ------CORRECT ANSWER---------------Steam pressure gauge, tricocks, Pressuretrols An expansion tank or compression tank would be used in what? ------ CORRECT ANSWER---------------Hot water boiler What is the purpose of the expansion tank? ------CORRECT ANSWER------ ---------To provide for expansion and contraction of the water volume as its temperature varies.

On a hot water boiler, what is the purpose of the vent valve? ------ CORRECT ANSWER---------------To make sure there is water inside the boiler and to vent any trapped air. If the safety valve or ASME safety relief valve leaks you would do what? ---- --CORRECT ANSWER---------------Have the valve repaired or replaced. Tri cocks or gauge cocks are sued on a steam boiler to indicate? ------ CORRECT ANSWER---------------The true water level inside the boiler. On a steam or hot water boiler, the safety valve or safety relief valve could be tested by? ------CORRECT ANSWER---------------When the boiler is running lifting the lever on the valve or raising the pressure until they operate. Before starting a steam or hot water boiler you should check for what? ------ CORRECT ANSWER---------------Water in the boiler. True or False: Bottom blow down valves are used for both steam and hot water. ------CORRECT ANSWER---------------True Safety valves or safety relief valves should be manually tested at least...? -- ----CORRECT ANSWER---------------Monthly

On a steam boiler what is a siphon or pigtail used for? ------CORRECT ANSWER---------------To protect the steam gauge from too high of temperature. What is one reason causing the expansion tank to fill with water? ------ CORRECT ANSWER---------------Air leaks from the gauge glass fitting. What would you do if you cam into a boiler room and found no water in the boiler? ------CORRECT ANSWER---------------Shut off the burner and allow boiler to cool. What is the purpose of the bottom blow down on a steam boiler? ------ CORRECT ANSWER---------------To remove sludge and sediment and to drain the boiler. When blowing down the water column the water should do what? ------ CORRECT ANSWER---------------Refill the gauge glass quickly. When doing the annual boiler inspection the boiler should... ------ CORRECT ANSWER---------------Water and fire side cleaned and inspection ports open. Purging is part of what cycle? ------CORRECT ANSWER---------------Firing cycle

All steam traps will prevent steam from passing through them but will allow what to pass through them? ------CORRECT ANSWER---------------Dirt, air, and condensate. How do we know if we are using and approved safety valve for a steam boiler or a safety relief valve for a hot water boiler? ------CORRECT ANSWER---------------A spring loaded direct acting safety valve or safety relief valve. Before testing a low water fuel cut-out what must be done? ------CORRECT ANSWER---------------The burner must be on. Heat can be transferred in how many ways? ------CORRECT ANSWER------ ---------Three. Aqua stats work by sensing: ------CORRECT ANSWER--------------- Temperature. Name the different ways heat can be transferred and give a definition of each way. ------CORRECT ANSWER---------------Radiation, Conduction, Convection How many types of boilers are there? ------CORRECT ANSWER--------------

  • Three: Fire tube, Water tube, Cast iron sectional

Give an example of cold water start for a hot water boiler. ------CORRECT ANSWER---------------XXX Two low water fuel cut-outs are required when the BTU input of the burner exceeds: ------CORRECT ANSWER---------------750, A boiler equipped with the two low water fuel cut-outs must have _______________ on the secondary low water fuel cut-out. ------ CORRECT ANSWER---------------A manual reset. A boiler with a new burner OR a new boiler room must have: ------ CORRECT ANSWER---------------A kill switch by each door leaving the boiler room. The low water fuel cut off should be tested: ------CORRECT ANSWER------- --------At least once a day when the boiler is in operation. What is the purpose of a check valve used in a feed water line going to a steam boiler? ------CORRECT ANSWER---------------To restrict the flow in one direction only. Where would you expect to locate pyrometer? ------CORRECT ANSWER--- ------------In the exhaust gases leaving the boiler What would the pyrometer tell you? ------CORRECT ANSWER--------------- The temperature

An aqua state would be used on what type of boiler? ------CORRECT ANSWER---------------A hot water boiler Globe valves are used when you need to: ------CORRECT ANSWER--------- ------Throttle or restrict the flow Three types of drafts are: ------CORRECT ANSWER---------------Natural, forced, and induced. The number of blowdowns required is determined by_____________. ------ CORRECT ANSWER---------------boiler water analysis A ____________ pump is a boiler accessory used to draw condensate back from the system by producing a negative pressure on the condensate return lines. ------CORRECT ANSWER---------------vacuum Oxygen in the boiler water causes ________. ------CORRECT ANSWER---- -----------pitting A therm is equivalent to _________ Btu. ------CORRECT ANSWER----------- ----100, A(n) _________ draft fan is located before the furnace. ------CORRECT ANSWER---------------forced

At the NOWL, the gauge glass is approximately half full. ------CORRECT ANSWER---------------True A low water condition in the boiler can cause overheating of the tubes. ------ CORRECT ANSWER---------------True City water does not require treatment for use in boilers. ------CORRECT ANSWER---------------False Steam traps prevent the flow of condensate back to the feed-water pumps. ------CORRECT ANSWER---------------False Clogged fuel oil strainers cause high suction readings. ------CORRECT ANSWER---------------True A safety data sheet is printed material used to relay chemical hazard information from the manufacturer, importer, or distributor. ------CORRECT ANSWER---------------True Draft can be measured with manometer. ------CORRECT ANSWER----------- ----True Sludge is removed from the boiler with a surface blowdown. ------ CORRECT ANSWER---------------False

A deaerator is a boiler water treatment accessory that heats feedwater to the temperature of saturated steam within the pressure vessel. ------ CORRECT ANSWER---------------True All valves are closed when completing a dry lay-up. ------CORRECT ANSWER---------------True The boiler room log is used to record boiler operations events. ------ CORRECT ANSWER---------------True Forced circulation hot water heating systems are more common in large buildings than natural circulation hot water heating systems. ------ CORRECT ANSWER---------------True The pressure reducing valve in a hot water heating system regulates the pressure of water returning from heating units. ------CORRECT ANSWER--- ------------False A boiler is an open vessel in which water is transformed into steam under pressure by application of heat. ------CORRECT ANSWER---------------False An HRT boiler is a watertube boiler ------CORRECT ANSWER--------------- False

For low pressure steam boilers, the capacity of the safety valve must be large enough that the boiler pressure cannot rise more than _______ above the MAWP. ------CORRECT ANSWER---------------5 psi Flame safeguard systems can monitor _________. ------CORRECT ANSWER---------------pilot and main flame Sensors used for flame detection in boilers include __________. ------ CORRECT ANSWER---------------lead sulfide cell, ultraviolet scanner, and thermocouple (All of the above) A _________ blowdown is performed to remove sludge from the boiler. -----

  • CORRECT ANSWER---------------bottom A pH level of 7.0 is an indication that the boiler water is __________. ------ CORRECT ANSWER---------------neutral, neither basic or acidic Standard atmospheric pressure is approximately _________ psia. ------ CORRECT ANSWER---------------14. Specific gravity is the ratio of weight of a volume of a substance to the weight of the same volume of ________. ------CORRECT ANSWER---------- -----water

Heat transfer can occur by _________. ------CORRECT ANSWER------------ ---conduction, convection, radiation (All of the above) The theoretical amount of air is often called the ______ amount. ------ CORRECT ANSWER---------------primary Boiler safety valves should be repaired by a(n) ____________. ------ CORRECT ANSWER---------------authorized safety valve repair company Safety Data Sheets should only be available to supervisors and managers. ------CORRECT ANSWER---------------False The EPA does not regulate discharges of waste water from utility and industrial boilers. ------CORRECT ANSWER---------------False High surface tension of boiler water from floating foreign matter causes and increase in __________. ------CORRECT ANSWER---------------foaming Blowing down is most effective during a period when steam output is _________. ------CORRECT ANSWER---------------at a low rate The water column must be located __________. ------CORRECT ANSWER---------------at the normal operating water level

Draft in a boiler is measured in _________. ------CORRECT ANSWER------- --------inches of water A positive pressure before the furnace indicates _________ draft. ------ CORRECT ANSWER---------------forced Preparation for a boiler inspection requires having the boiler _________. --- ---CORRECT ANSWER---------------cool, opened, and thoroughly cleaned