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  • Class Stationary Steam Engineer
  • Class Stationary Steam Engineer
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DC 3RD CLASS TEST, 3RD CLASS STATIONARY STEAM ENGINEER LICENSE PREP, STATIONARY ENGINEER, STATION ENGINEER EXAM, DC 1ST CLASS BOILER

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2025/2026 Written for academic year
Institution Class Stationary Steam Engineer
Course Class Stationary Steam Engineer
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DC 3RD CLASS TEST, 3RD CLASS STATIONARY STEAM ENGINEER LICENSE PREP, STATIONARY ENGINEER, STATION ENGINEER EXAM, DC 1ST CLASS BOILER

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DC 3RD CLASS TEST, 3RD CLASS
STATIONARY STEAM ENGINEER
LICENSE PREP, STATIONARY
ENGINEER, STATION ENGINEER
EXAM, DC 1ST CLASS BOILER
Themcomponentminmwhichmliquidmvapormbymabsorbingmheatmismcalled?m-
mCORRECTmANSWERmevaporator




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mCORRECTmANSWERmMetalmstakemdrivem8mfootmintomthemground.




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Whatmismthemacceptablemrangemformresidualmsodiummsulfiteminmthemboilermmaintain?m-
mCORRECTmANSWERm30-70




WhatmismthemBTUmcontentmofmamgallonmofm#4mfuelmoil?m-mCORRECTmANSWERm146,000



Whatmdoesmamzeolitemwatermsoftenermsystemmusemasmammeansmofmregeneration?m-
mCORRECTmANSWERmbrine




Whatmaremthem4mstepsmformamZeolitemRejuvenationmwatermsoftenermprocess?m-
mCORRECTmANSWERmBackwash,mBrine,mRinse,mService




Wheremmediummtemperaturemliquidmfound?m-mCORRECTmANSWERmCondenser

,Wheremismhighmtemperaturemvapormfound?m-
mCORRECTmANSWERmAtmthemdischargemofmthemcompressormormcondenser




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mCORRECTmANSWERmDiagonalmStays




Whatmtypemofmsafetymvalvemismthis?m-mCORRECTmANSWERm(mFull)mCrosbymnozzle-
typemsafetymvalve.mPagem365mBOG



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Namemthemwiremthatmconnectsmallmcomponentmofmamsystemmtomamphysicalmgroundmormwatermpipe?
m-mCORRECTmANSWERmGroundingmelectrodemconductor




Wheremdomyoumgetmsub-coolingmreading?m-mCORRECTmANSWERmTakemliquidmlinempressure

CrossmreferencemtomtemperaturemusingmamP/TmChart

Getmliquidmlinemtemperature

Subtractmactualmtemperaturemfrommcrossmreferencedmtemperature

ResultmismSubmcooling



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peningmvalvemmustmbemlocated?m-
mCORRECTmANSWERmclosestmtomthemboilermandmfollowedmbymthemscrew-typemvalve




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ow?m-mCORRECTmANSWERmBymopeningmthemQuickmopeningmvalvemfirstmandmclosingmitmLast.

,ASMEmCodemdefinesmamslowmopeningmvalvemasmwhat?m-
mCORRECTmANSWERmOnemrequiringmatmleastm5mfullm360mdegreemturnsmbetweenmfullmopenmandmclo


semposition.



Am300mHorsepowermboilermoperatingmatm100psimhasmanmaveragemloadmofm75%mwithm80%mcondens
atemreturnmandm5%mblowmdown.mThemtreatmentmprovidesmamchemicalmwhichmcostsm$8.75mpermgall
on,mandmwillmtreatm600mgallon.mFindmthemamountmofmthemchemicalmneededmformthemdaymperiod,ma
ndmthemcostmofmthemchemicalmformam30mdaysmperiod?m-
mCORRECTmANSWERmWatermInm=mWatermOut



Makeupm+mCondensatemReturnm=mEvaporatorm+mBlowmDown



AveragemEvaporatormRatem=m300mxm34.5mpphmxm.75%mloadm=m7762,m50mpph



1mMonthm+m.8(m7762.50mpph)m=m7762.50mpphm+m0500mm



1mMonthm+m6210mpphm=m7762.50mpphm+m.0500mm

m -6210m-6210

1mMonthm=m1552.5mpphm+m.0500



.9500mmm=m1552.5mpph

.9500mm.9500



1Monthm=m1,634.21mpph



GallonsmpermMonthm=m1634.21m/m8.33mxm24mxm30m=m141,m252.24mgallonsmpermmonth

Chemicalmneededm=m141,252.24mgallonm/m600mgallonm=m235,m40mgallon



Costmpermmonthm=m235,m40mgallonmxm8.75m=m$2,059.75

, Duringmam24mhoursmoperationmhowmoftenmshouldmyoumcheckmthemwatermlevel?m-
mCORRECTmANSWERmoncempermshift




Howmoftenmdomyoumcheckmthemhighmlimitmswitch?m-mCORRECTmANSWERmAnnually



Whatmismthemrecommendedmtimemformamcompletemexternalminspectionmofmamboiler?m-
mCORRECTmANSWERmoncempermshift




Whatmismthemfirstmthingmtomdomwhenmshuttingmdownmamboiler?m-
mCORRECTmANSWERmTomturnmoffmthemfire




Amflowmcontrolmshouldmbemblownmdownmwhen?m-mCORRECTmANSWERmoncempermshift



HowmoftenmshouldmyoumcheckmthemLowmWatermFuelmCutmoff?m-
mCORRECTmANSWERmoncempermshift




Whymismoilmaddedmtomthemrefrigerant?m-mCORRECTmANSWERmlubricationmofmthemcompressor

m Keepmrefrigerantmmigrating



Recycledmandmfilteredmrefrigerantmcanmbemusedmwhere?m-
mCORRECTmANSWERmBymthemsamemownerminmthemsamemtypemofmequipment




Datamprintedmonmthemequipmentmnameplatemwouldmincludemmanufacturer,mmodel,mandmserialmnu
mbermand________________?m-
mCORRECTmANSWERmStampmofmapprovalmfrommcommissioningmauthority

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