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The most important valve on a boiler is the_____ Valve.
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The funtion of a flame device is to shut off the _____.
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2nd Class C Boiler
Test for second class c Boiler Minnesota
| Question | Answer |
|---|---|
| The most important valve on a boiler is the_____ Valve. | Safety Valve |
| The funtion of a flame device is to shut off the _____. | fuel supply when the burner flame goes out |
| When used, a quick-opening blowdown valve be located_______. | Nearest to the boiler |
| The low-water cotoff (LWCO) is a divice fitted to the boiler to shut off the_____. | fuel supply to the burners when water level in the boiler is low |
| Try cocks on a water calumn are used to_____. | check the water level in the boiler |
| A check valve is a valve that_____. | allows flow in one direction only |
| Black smoke can be caused by_____. | isufficient combustion air |
| Large high pressure utility boiler use_______ | Natural Draft |
| Handhole and manhole opening_____. | Are used for draining the boiler |
| The maximum pressure allowed in a low pressure hot water boiler is no more than _____psig. | 160 |
| In accordance with the statutes of the State of Minnesota , one Boiler horspawer for conventional boiler is equal to______. | 10 sq ft of boiler heating surface |
| A botton blowdown system can be equipped with slow-opening and quick-opening valves, with the quick-opening valve located_____. | cosest to the boiler opened first |
| A hydrostactic test test is considered to be a____ test that is used to determine if the component works as designed. | proof |
| Modulating combustion controls_____. | regulate the steam and feedwater supply |
| Boiler water with a PH of 6 is considered_____. | Acid |
| When the boiler heating surface cannot be discerned, the boiler horsepower shall be determinated by dividing the Btu imput by__________. | 67,000 |
| The feedwater line cotain_____. | check valve between a stop valve and a boiler |
| A Special Engineer is expected to be competent, take charge of, and be resposible for the safe operation and maintenance of all classes of boiler of not more than_______HP and their appurtenances. | 50 |
| The purpose of a steam trap is to_____. | Remove air and condensate from stean line |
| For the porpuse of the boiler and pressure vessel statutes, "a year" is considered to be a least_______hr. | 2000 |
| Convection is a method of heat transfer where the movement of fluids is due solely to the_______. | Flow of fluids |
| The float chamber of the low water fuel cutoff (LWCO) is frequently blown down to prevent the_____. | float chamber from collecting sediment |
| A cross tee fitting is used on boiler column connections to_____. | Install vent valves |
| A logbook must be maintained in the boiler room by the_______. | A chief engineer of operating engineer designee |
| The boiler heating surface_____. | Is a smaller in watertube boiler than in the firetube |
| _____Valve should be used if a valve is required in a steam line from throttling action. | globe |
| Combustion is_____. | chemical combination of the elements of fuel with oxygen |
| With regard to steam boiler, the letters "HRT"mean_____ | Horizontal return tubular |
| _____ is the flow of air or gases of comustion caused by a difference in pressure between two points. | draft |
| The shief engineer of a high pressure boiler plant of over 200 HP must stay within______of the boiler room at all times during the shief. | 500 ft |
| The boiling point of water within a pressurized boiler will_____. | 212 0f |
| When heat is tranferred by the flow of fluids, it is know as_____. | Convection |
| In accordance with the statutes of the State of Minnesota, each electric boiler horsepower is equal to________Kilowatts. | 10 |
| The main purpose of installing insulation on steam system piping is to_____. | Prevent heat loss |
| The material used most frequently for piping is____. | stainless steel |
| In a boiler, heat is transferred from the burning fuel to the water by________. | convection, conduction, radiation |
| Foaming in a boiler may be caused by_____. | A high concetration of dissolved solids in the boiler water |
| In a natural draft furnance, the amount of draft is affected by the____. | size of the induced draft fan |
| The main funtion of a gas burner is to_____. | mix the gas with combustion air |
| Before filling a boiler with water, the licensed engenieer should ensure that_____. | the flame scanner has been tested |
| Licenses granted must be displayed in _____________. | A conspicuous place in the engine or boiler room |
| The best method of testing a low-water fuel cutoff (LWCO) is to______. | Blow down the float chamber to determine in the burner will cut out |
| A test connection between the siphon tube and the boiler pressure gauge is need to _____. | test steam temperture at the pressure shown on the gauge |
| A steam boiler operating control is used to control the_____. | setpoint on the safety valve |
| A way to determine is safety vlave on a boiler has sufficient capacity is to_______ | check with the ASME Code |
| The safety valve test must not be used unless_____ | another licensed engineer is present |
| In accordance with the ststutes of State of Minnesota, one boiler horsepower for steam-coil-type generators is equal to ______. | 5 sq ft of boiler heating surface |
| As steam pressure increases, there is a correponding increase in the _____. | Boiling temperature of the water in the boiler |
| A hydrostatic test is a mandatory requirement when a new boiler is intalled in the State of minnesot. The test pressure requirement must no exceed_____time the maximum allowable working pressure. | 1.5 |
| Heat that brings about a change of sate without causing a change in temperature is_______. | called latent heat |
| The two general desings of electric boiler are the_____types. | Electrode and Resistance |
| When heat transfer occurs by travelling through metal, it is known as _________. | radiation |
| A low-water cutoof (LWCO) prevents boiler damage by_____. | cutting off the fuel supply to prevent overheating of any part of the furnance |
| _____ is any solid impurity in water that cannot be dissolved. | Suspended matter |
| The minnimun passing score for a Minnesota engineer's license examination si______%. | 70 |
| Boiler baffles are used_____. | to direct the flue gases through the boiler furnance |
| When hot combustion gases travel through boiler tubes that are surrounded by boiler water, the boiler is called a _____ Boiler. | Firetube |
| A low-water fuel cutoff (LWCO) is used on a boiler to prevent_____. | Damage due to burner overfiring |
| A gauge glass can be attached to a______Column, wich is attached to a boiler. | water |
| A watertube boiler is a boiler that has_____. | Water on the outside of the tubes and hot gas on the inside of the tubes |
| A_____blowdown is performed to remove sludge from a boiler | botton |
| Rules goerning the construction of power boiler are set out in_____. | ASME Code Section I |
| A high pressure boiler must two means of feetwater supply if it exceeds_______HP. | 500 |
| In a deaerator, dissolved gases are removed from the water by_____. | forncing the water through organic screens and venting the gases to the atmosphere |
| A siphon tube is necessary to_____. | prevent water from entering a steam gauge |
| The correct procedure for blowing down a high pressure boiler is to open_____. | the quick-opening valve first and close it last |
| The document governing boiler fitting and valves is the____code | ASME |
| Sensible heat is_________. | Able to cause a change in temperature |
| Internal water treatment_____. | Consists of chemicals added to the boiler feedwater |
| Expantision bends or joins are installed in piping systems to____. | allow for expansion and contraction of piping without causing damage |
| Continuos blowdown systems are udes in boiler_____. | To help control the dissolved solids concentration |
| The evaporative capacity of a steam boiler is stated as pound of steam per_____. | Hour |
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Hermy2020