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First Class Steam License

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First Class Steam License

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FIRST CLASS STEAM LICENSE
COMPLETE DETAILED CASE STUDY

j if the boiler is generating 20,000 lb/hr of steam, it must be supplied with ________ lb/hr of feedwater -

20,000



from the deaerator, oxygen and other noncondensable gases are separated from the feedwater and
directed to the atmosphere _________ - through the vent



a(n) ___________ system is a system of measuring instruments and controllers that work together to
control a process - controll



one pound of water is needed to produce ________ of steam - 1lb



in a low-pressure gas system, the ________ valve is an electric valve that cannot be opened until the gas
pilot is lit - manual reset



______ are used for loads that require dry steam, such as turbines - superheaters



in a feedwater system, the ________ valve is located close to the shell of the boiler on the feedwater line
so that the check valve can be repaired without draining (dumping) the boiler - stop



a steaming boiler can have the water in the gauge glass go from half full to empty in a matter of
________ if water is not added to the boiler - minutes



in a fuel oil system, the purpose of duplex strainers is to _________. - permit one strainer to be cleaned
while the other is in service



superheated steam has more _______ than saturated steam at the same pressure. - heat energy

, the deaerator is located ________. - above the feedwater pumps



a gas pilot line on a high-pressure gas system supplies gas through a _________ valve to the pilot gas
pressure regulator. - shutoff



the purpose of any fuel oil system is to supply fuel oil to the burner at the proper __________ -
temperature and pressure



number ________fuel oil needs to be heated before it is pump so that it can flow - number 6



pulverizing coal allows__________ - for closer contact between the coal and oxygen for complete
combustion



draft is ____________caused by a difference in pressure between two points - the flow of air or gases of
combustion



natural draft is the result of temperature differences between __________ - air and gasses of
combustion



in a high-pressure gas system, the air mixes with the gas in the _________ - burner register



a measuring instrument can use a___________to send a signal to a controller - transmitter



pulverized coal is ground into a fine powder and blown into the combustion chamber where it is burned
in ___________ - suspension



a control system uses a__________to execute a control strategy - control Loop



water weighs approximately__________lb/gal - 8.3 lb/gal

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