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Special Boilers MN
| Question | Answer |
|---|---|
| A Special Engineer is expected to be competent, take charge of, and be responsible for the safe operation and maintenance of all classes of boilers of not more than _____HP and their appurtenances | 50 |
| A gauge glass can be attached to a ______ column, which is attached to a boiler. | Water |
| In accordance with the statutes of the State of Minnesota, one boiler horsepower for conventional boilers is equal to ______________. | 10 Sq ft of boilers heating surface |
| In accordance with the statutes of the State of Minnesota, one boiler horsepower for steam-coil-type generators is equal to __________. | 5 Sq ft of boilers heating surface |
| When the boiler heating surface cannot be discerned, the boiler horsepower shall be determined by dividing the Btu input by _______. | 67,000 |
| In accordance with the statutes of the State of Minnesota, each electric boiler horsepower is equal to _______kilowatts. | 10 |
| A logbook must be maintained in the boiler room by the ______. | Chief engineer or the operating engineer designee |
| The shift engineer of a high pressure boiler plant of over 200 HP must stay within _______ of the boiler room at all times during the shift. | 500 ft |
| A high pressure boiler must have two means of feedwater supply if it exceeds ______HP. | 50 |
| When used, a quick opening blowdown valve must be located _____. | Nearest to the boiler |
| The minimum passing score for a Minnesota engineer's license examination is ______%. | 70 % |
| Licenses granted must be displayed in __________. | A conspicuous place in the engine or boiler room |
| For the purpose of the boiler and pressure vessels statutes, "a year" is considered to be at least _______hr. | 2000 |
| Sensible heat is_________. | able to cause a change in temperature |
| Heat that brings about change of state without causing a change in temperature is called ________. | latent heat |
| In a boiler, heat is transferred from the burning fuel to the water by____(choose 3 options). 1. convection 2. expansion 3. conduction 4. contraction 5. radiation | 1,3, and 5. Convection Conduction Radiation |
| Convection is a method of heat transfer where the movement of the fluids is due solely to the _______. | flow of fluids |
| Large high pressure utility boilers use ________. | Balanced draft |
| When heat transfer occurs by traveling through metal, it is known as ______. | conduction |
| An example of the transfer of heat by radiation is_____. A. The handle of a frying pan becoming hot on the stove. B. Using an automobile heater with a fan. C.the heating effect of the sun on the earth D. using an electric heater with a fan | C. The heating effect of the sun on the earth |
| The document governing boiler fittings and valves is the ____ code. | ASME |
| The best method of testing a low-rate fuel cutoff (LWCO) is to ________. | lower the water level in the boiler to the level where the burner should cut out |
| Rules governing the construction of power boilers are set out in ____. | ASME Code Section 1 |
| A way to determine if a safety valve on a boiler had sufficient capacity is to _______. | perform an accumulation test |
| An example if a nondestructive test on a boiler is a _______ test. | X-ray |
| The material used most frequently for piping is _____. | low carbon steel |
| In a natural draft furnace, the amount of draft is affected by the ________. | height of the stack |
| A check valve is a valve that _____. | allows flow in one direction only |
| Expansion bends or joints are installed in piping systems to_____. | allow for expansion and contraction of the piping without causing damage |
| What is the main purpose of installing insulation on steam system piping? | To prevent heat loss |
| What is the purpose of a steam trap? | The purpose is to remove air and condensate from steam lines. |
| Boiler stays ____________. | are used to support tube sheets in a boiler |
| Handhold ND manhole openings ______. | Permit inspection, cleaning, and repairs |
| A low-rate fuel cutoff (LWCO) used on a boiler to prevent _________. | damage to the boiler from overheating |
| The boiler heating surface cannot be used to determine what? | The boiler heating surface cannot be used to determine the boiler capacity |
| With regard to steam boilers, the letter "HRT" mean _____. | horizontal return tubular |
| When hot combustion gases travel through boiler tube station that are surrounded by boiler water, the boiler is called a ______ boiler. | firetube boiler |
| The two general designs of electric boilers are the _________and______types. | Electrode and resistance |
| Continuous blowdown systems are used in boilers to help control the ______ ________ ________. | dissolved solids concentration |
| A water tube boiler is a boiler that has________. | water in the inside of the tube station and hot gas on the outside of the tubes |
| How many ways can heat be transferred | 3 |
| How many types of low pressure boilers are there? | 3 |
| Boilers and boiler fittings used in the State of Minnesota must be constructed to what cosde? | A.S.M.E. |
| What controls the starting and stopping of the burner by sensing the temperature of the water in a hot water boiler? | Aqua stat |
| When hydrostatic test of a boiler exceeds the maximum allowable working pressure each safety valve, if left attached to the boiler should: | Have its valve disc held to its seat by means of testing clamp or "gag" |
| Heat can be transferred in three ways and they are: | Conduction, radiation, convection |
| The first sequence in the series of automatic burner control is: | Purging |
| Can a low water condition occur in a hot water heating type boiler? | Yes, for numerous reasons |
| Other than a safety relief valve, what other safety devices should be installed on a hot water heating boiler? | Low water fuel cutoff off |
| Each boiler in a battery (piped together sharing the same common header) must have: | A main steam stop |
| What removes air from a hot water boiler system? | Air control |
| In a steam boilers system, the unit that turns the burner on and off based on steam pressure is the: | Pressure control |
| If water in the gauge glass is not visible because of failure of the feed water supply- what should be done? | shut off the fuel to the burner and secure the boiler |
| What conditions are necessary to cause a furnace explosion? | Accumulation of unburned fuel, oxygen, and an ignition source |
| The LWCO should be tested how often? | Daily |
| Gauge pressure plus 14.7 psi is called what? | Absolute pressure |
| The evaporation of 34.5 pounds of water per hour from and at a temperature of 212 degrees Fahrenheit is defined as: | One boiler horsepower |
| When a safety valve opens and closes rapidly it is rendered to as | Chattering |
| Furnace explosions are caused by a buildup of combustible gases, or vapors in the combustion chamber, what is the term to remedy this condition? | Purging |
| Why is a pigtail or siphon required in steam pressure gauge lines? | To protect the gauge from high temperature |
| In a steam boiler system, what is the term used for replacing the water that has been lost by blowing down the boiler or through leaks in the system? | Make up water |
| On a steam boiler system, why are bottom blow down valves installed at the lowest point of the waterside of boilers? | To remove sludge and sediment |
| Boiler heating surface is defined as: | water on one side, hot gases on the other side |
| In a firetube boiler, the water | surrounds the tubes |
| When the bottom blow down valves are used on a steam boiler, what valve is located closest to the boiler shell? | the quick opening valve |
| What is the function of an automatic city water feeder on a low pressure boiler? | to control water level |
| The purpose of a safety valve on a steam boiler is to: | To prevent the boiler from exceeding its MAWP |
| The control designed as a safety back up, should the operating pressuretrol fail is: | a high limit control |
| The capacity of a safety valve used on a steam boiler is measured in: | pounds of steam that can be discharged in one hour |
| How does pressuretrol attached to the steam space of a boiler control the burner operation? | On pressure decrease--starts the burner |
| What action should an operating engineer take if a defect is discovered in a boiler requiring repairs not of a routine nature? | notify the boiler inspector |
| Boilers are considered low pressure when? | Steam boiler are not over 15 psi and liquid boiler are not over 160 psi and 250 degrees F. |
| What boiler license is required for operating a boiler as a shift engineer in a plant having 3 boilers, each having 1660 sq ft of heating surface? | Second |
| The maximum temperature to be carried on a low pressure hot water boiler is: | Less than 250 f |
| The popping pressure of a safety relief valve on a low pressure hot water heating boiler cannot exceed: | 160 psi |
| The bottom blow down line on a steam boiler system is located at the: | lowest point of the waterside of a steam boiler |
| For the purpose of rating boiler horsepower for engineer license classifications only. How many sq ft of heating surface shall be considered equivalent to one boiler horsepower for conventional boilers? | 10 Sq ft |
| What is recommended for boilers that will be out of service for a long time and there is a possibility of freezing? | A dry lay up |
| The rapid burning of fuel and oxygen that results in the release of heat is called? | Combustion |
| On a steam boiler, what is used to reduce the amount of movement of the water so the operator can get an accurate reading of the water level in the gauge glass? | Water column |
| After repair work is done on the boiler, what test is done to check for leaks: | Hydrostatic test |
| The dial on a pressure gauge used on a low pressure boiler should be graduated to: | one and one half to two times the maximum allowable working pressure |
| The three basic types of low pressure boiler are: | a fire tube, water tube, and cast iron sectional |
| The term used for the evaporative capacity output of a steam boiler is expressed in: | pounds per hour |
| What boiler license is required to be in charge of a boiler plant having 2 boilers each having 2500 sq ft of heating surface? | 1st class |
| When testing the LWCO on a steam boiler, the burner should be firing why? | to see if the burner shuts off |
| How often should safety valves be tested on a low pressure boiler? | Quarterly (90 days) |
| How can you tell if the sight/gauge glass isn't working properly? | Water moves up and down slowly |
| After a new boiler is installed, but before it is put into operation, this test must be performed and witnessed by a State Boiler Inspector? | Hydrostatic test |
| Tri-cocks or gauge clocks are used on a steam boiler to indicate? | 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? | By 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? | Water in the boiler |
| For high pressure boilers a year is defined as? | 2000 hours |
| The low water fuel cutoff off is the most important electrical/mechanical devices on a boiler, it should be tested how often? | Daily |
| What should be posted in the boiler room? | Boiler licenses Inspection certificate or exemption certificate |
| The ASME Code states that boilers with over ______ square feet of heating surface must have 2 or more safety valves? | 500 |
| A _____ valve is a valve that permits fluid flow in only one direction and closes automatically to prevent backflow. | check |
| Minnesota State Statute defines a "year" as ______ for low pressure boilers? | 12 months--to includes the heating season and the reminder maintaining the LP boiler |
| In accordance with the statutes for the State of Minnesota, one boiler horsepower for steam-coil-type generators is equal to _______? | 5 Sq ft of boiler heating surface |
| For licensing purposes, when the boiler heating surface cannot be discerned, the boiler horsepower shall be determined by dividing the Btu input by ________? | 67,000 |
| In accordance with the statutes of the State of Minnesota, each electric boiler horsepower is equal to _______kilowatts? | 10 |
| The shift engineer of a high pressure boiler plant of over 200 HP must stay within ________of the boiler room at all times during the shift? | 500 ft |
| A high pressure boiler must have two means of feedwater supply if it exceeds _________ horsepower? | 50 |
| LWCO is short for what? | Low Water Fuel Cutoff |
| The low water fuel cutoff (LWCO) is a device fitted to the boiler to shut off the ______? | Fuel supply to the burners if the water level becomes too low |
| A high pressure boiler of 25 HP should be checked how often? | 24 hours |
| The first and most important task for a boiler operator when entering a boiler room is to check the ______of all boilers on-line? | Water level |
| The low water fuel cutoff is tested by blowing down its float chamber or doing what kind of test? | An evaporation test. |
| According to the Minnesota boiler statutes, a high pressure boiler plant of 31 to 200 horsepower may be left in operation unattended by an operating engineer for no more than ___ consecutive hours when the premises are occupied by employees or the public? | Teo consecutive hours |
| In most US jurisdictions, and _______boiler inspection is mandated by law? | Annual |
| Boiler operation data commonly recorded in a boiler room logbook includes what information? | When boiler checks were made, who made the boiler checks, and what specific checks were made. |
| The most common steam pressure gauge operates by the movement of a ____ ____? | Bourbon tube |
| A high pressure steam boiler is a boiler with an MAWP of more than ___psi? | 15 |
| When performing an evaporation test, the water in the sight/gauge glass _____? | Must be visible to the operator at all times |
| Boilers equipped with 2 LWCO'S must have what on the axillary LWCO? | Manual reset |
| An indication of soot build-up on a firetube boiler is | High stack temperature |
| The purpose of the lever on a safety valve is? | To test the operation |
| What elements in fuel are needed to create combustion | Carbon and Hydrogen |
| A.S.M.E means/ is short for what? | American Society of Mechanical Engineers |
| MAWP means/stands for what? | Maximum allowable working pressure |
Created by:
Cmamaof4