STATIONARY ENGINEER EXAM QUESTIONS AND ANSWERS

STATIONARY ENGINEER EXAM
QUESTIONS AND ANSWERS
How8vmuch8vclearance8vfrom8vthe8vtop8vof8vthe8vboiler8vis8vneeded8vfor8va8vHP8vboiler8vthat
8vproduces8v700008vlbs8vof8vsteam?8v-8vANSWERS--78vfeet



On8va8vgas8vfired8vboiler8vwhat8vis8vthe8vproper8vgas8vto8vair8vmixture8v-8vANSWERS--
30%-70%8vand

in8vspecial8varrangements8vit8vcan8vbe8vas8vhigh8vas8v100%8v.8vANSWER8vCHAPTER8v1
8v

18vremember%

What8vis8vthe8vtotal8vhardness8vin8va8vsystem8vthat8vwas8vfound8vto8vhave8vcalcium8vhardn
ess8vof8v60ppm8vand8vmagnesium8vhardness8vof8v18ppm8vand8vcarbon8vhardness8vof8v12
8vppm?8v-8vANSWERS--TH=(Ca8vx8v2.5)8v+8v(Mg8vx8v4.1)\

nTH=(608vx8v2.5)8v+8v(188vx8v4.1)\nTH=8v150+73.88v=(8v223.88vPPM)

How8voften8vshould8va8vcomplete8vexternal8vinspection8vof8vthe8vboiler8vbe8vdone?8v-
8vANSWERS--Once8va8vShift



With8v248vhr8voperation8vhow8voften8vdo8vyou8vcheck8vthe8vwater8vlevel?8v-8vANSWERS--
Once8vper8vshift

How8voften8vdo8vyou8vcheck8vthe8vLWCO?8v-8vANSWERS--Once8vper8vshift

How8voften8vdo8vyou8vcheck8vthe8vHigh8vLimit8vSwitch?8v-8vANSWERS--Annually

A8v2"8vpipe8vwas8vfound8vto8vbe8vdelivering8vwater8vat8v1008vpsia8vat8v1040ft8vper8vsecond.8
vHow8vmany8vgallons8vper8vhour8vwill8vit8vdeliver?8v-8vANSWERS--

GPM=8vV8v(diameter8vsquared)8vdivided8vby8v.40858vANSWER8vpg8v4698vBOG

What8vcontrols8vthe8vamount8vof8vblowback8von8va8vsafety8vvalve?8v-8vANSWERS--
Blowback8vring8vor8vadjusting8vring

On8va8vopen8vair8vexpansion8vtank8vhot8vwater8vboiler8vsystem;8vhow8vhigh8vshould8vit8vbe8
vmounted?8v-8vANSWERS--(48vFeet8v)8vabove8vthe8vhighest8vheating8velement.



What8vis8vthe8vminimum8vtop8vclearance8vof8vboilers8vwith8vmanholes?8v-8vANSWERS--
58vfeet

Package8vboilers;8vsteam8vheating8vboilers8vand8vhot8vwater8vheating8vboilers8vshall8vhav
e8va8vminimum8vclearance8vof?8v-8vANSWERS--
28vfeet8vfrom8vceiling.8vCode8vchapter8v108vpage76

Most8vimportant8vsafety8vdevice8von8va8vboiler?8v-8vANSWERS--Safety8vrelief8vvalve

,What8vdoes8va8vBlack8vLiquor8vBoiler8vdo?8v-8vANSWERS--
Black8vLiquor8vis8vthe8vby8vproduct8vof8vwood8vpulp8vprocessing8vin8vthe8vpaper8vmaking8vi
ndustry.

What8vdoes8vBlack8vliquor8vboiler8vknown8vfor?8v-8vANSWERS--
Steam8vgeneration8vand8vrecovery8vof8vsoda8vash

Maximum8vline8vvoltage8vfor8vcontrol8von8va8vboiler?8v-8vANSWERS--1508vvolts

Under8vwhat8vcode8vare8vboilers8vdesigned8vand8vconstructed?8v-8vANSWERS--ASME-
8vCSD8v1



How8vmany8vlow8vwater8vcut8voffs8vare8vneeded8vper8vcode8vfor8va8vhot8vwater8vsystem8vw
hen8va8vboiler8vhas8vinputs8vgreater8vthan8v400,0008vbtu8vper8vhr8v-8vANSWERS--
18vLWCO8vis8vneeded.

What8vis8vthe8vminimum8vand8vmaximum8vsize8vfor8va8vsafety8vvalve8vper8vcode8vfor8vboile
rs?8v-8vANSWERS--Minimum8v3/4"8vand8vMaximum8v48v1/2"

What8vstamp8vis8vput8von8va8vboiler8vafter8vrepairs?8v-8vANSWERS--"R"

What8vis8vthe8vequalizing8vsystem8vused8vfor?8v-8vANSWERS--
The8vequalizing8vsystem8vis8vfor8vwarming8vup8vthe8vsteam8vlead.

A8vblowdown8vvalve8vis8vlocated8vat8vthe8vlowest8vwater8vspace8vof8va8vboiler8vfor8vthree8vp
urposes8v-8vANSWERS--1.8vto8vremove8vprecipitated8vsludge8vor8vloose8vscale8v\
n2.8vTo8vpermit8vrapid8vlowering8vof8vthe8vboiler8vwater8vif8vit8vhas8vbecome8vtoo8vhigh8vacci
dentally8v\
n3.8vAs8va8vmeans8vof8vremoving8vwater8vfrom8vthe8vboiler8vso8vthat8vfresh8vwater8vmay8vb
e8vadded8vto8vkeep8vthe8vconcentration8vof8vsolids8vbelow8vthe8vpoint8vwhere8vdifficulties8v
may8vbe8vexperienced.

In8vthe8vold8vpower8vboiler8vwhich8vtype8vof8vfeed-water8vregulators8vwere8vnot8vused?8v-
8vANSWERS--Electronic



After8vopening8va8vboiler8vfor8vrepairs8vhow8vmuch8voxygen8vis8vneeded?8v-8vANSWERS--
19%

What8vis8vthe8vfirst8vthing8vyou8vdo8vwhen8vshutting8vdown8va8vboiler?8v-8vANSWERS--
Turn8voff8v(extinguish8vfire)

What8vis8vthe8vlegal8vlimit8vof8vacceptable8vasbestos8vparticles8v?8v-8vANSWERS--
0.18vfibers8vper8vcubic8vcentimeter

What8vis8vCREEP?8v-8vANSWERS--
Creep8vis8vdefined8vas8vthe8vslow8vdeformation8vof8vmaterial8vwith8vtime;8vwith8vthe8vdefor
mation8vtaking8vplace8vat8velevated8vtemperatures8vwith8vno8vincrease8vin8vstress.

What8vis8vthe8vBTU8vcontent8vof8vAnthracite8vcoal?8v-8vANSWERS--140008vbtu/lb

,What8vsubstance8vtransfers8velectrical8vcurrent8vin8va8vphotocell?8v-8vANSWERS--
Electricity8vwill8vflow8vwhen8vthe8vCADMIUM8vis8vexposed8vto8vsufficient8vlight.

What8vdevice8vacts8vas8va8vcheck8vvalve8vin8vboth8vdirections8vand8vkeeps8vpumps8vprime
d?8v-8vANSWERS--
FOOT8vVALVES8vare8vused8vfor8vpumps8vunder8vsuction8vpressure8vto8vprevent8vbackflo
w8vprimed?8von8vthe8vsuction8vline.

What8vprotects8vboilers8vfrom8vexplosion8vin8vthe8vfurnace?8v-8vANSWERS--
A8vflame8vguard8vsystem8vis8van8varrangement8vof8vflame8vdetection8vsystem;8vinterlocks;
8vand8vrelays8vwhich8vwill8vsense8vthe8vpresence8vof8va8vproper8vflame8vin8va8vfurnace8vand

8vcause8vfuel8vto8vbe8vshut8voff8vto8vthe8vfurnace8vif8va8vhazardous8vcondition8vdevelops8v(i

mproper8vflame8vor8vcombustion).

What8vsize8vpipe8vis8vused8vas8va8vheader8vin8va8vboiler8voperating8vat8v100psi?8v-
8vANSWERS--68vinches



What8vdevice8vis8vused8vto8vmeasure8vflue8vgasses8v-8vANSWERS--The8vOrsat8vAnalyzer

Which8vlow8vwater8vcut8voff8vdoes8vnot8vhave8va8vmercury8vswitch?8v-8vANSWERS--
The8vSubmerged8velectrode8vtype

What8vis8vthe8vbtu8voutput8vper8vlb8vof8v#48vfuel8voil?8v-8vANSWERS--18

What8vsubstance8vis8vused8vfor8vthe8velectric8vtransmission8vin8van8vRTD?8v-
8vANSWERS--Platinum8vis8vused8vbecause8vof8vits8vstability8vat8vhigh8vtemperatures



How8vmuch8vair8vis8vneeded8vfor8vthe8vcombustion8vof8vpulverized8vcoal;8vgas;8voil?8v-
8vANSWERS--50%8vfor8vcoal8vand8v10-30%8vfor8vgas8v&8voil



In8vold8vpower8vboilers8vwhich8vtype8vof8vfeedwater8vregulators8vwere8vnot8vused?8v\
n(A)8vhydraulic8v\n(B)8vfloat8v\n(C)8vthermostatic8vexpansion8v\n(D)8velectronic8v-
8vANSWERS--ANSWER8vD8velectronic/electro-magnetic



What8vis8vhard8vforming8vscale?8v-8vANSWERS--Silica

With8vhydroxide8vpresent8vand8vnormal8voxygen8vlevels8vwhich8vchemical8vwill8vcause8vpr
oblems?8v-8vANSWERS--Chlorine

The8vresult8vfrom8vsteel8vmanufacturing8vand8vunder8vpressure8vin8vboilers8vtends8vto8vca
use8vbuldging?8vA8vbuldge8vis8vcaused8vby8v?8v-8vANSWERS--
A8vbuldge8vis8vcaused8vby8voverheating8vof8vthe8vshell8vplates8vand8vit8vaffects8vthe8ventire8
vthickness8vof8vthe8vplate.



A8vblister8vis8vcaused8vby8vwhat8v?8v-8vANSWERS--
Slag8vinclusion8vforming8va8vlamination8vat8vthe8vtime8vthe8vplate8vwas8vrolled8vat8vthe8vste
el8vmill.8vA8vblister8vis8va8vseparation8vof8vthe8vmetal8vfrom8vthe8vshell8vplate8vcaused8vby8vi
mpurities8vrolled8vinto8vthe8vshell8vplate8vwhen8vformed.

, With8vnormal8voxygen8vand8vlow8valkalinity.8vwhat8vis8vadded8vto8vthe8vboiler8vwater?8v-
8vANSWERS--Neutralizing8vAmines



Which8vchemical8vis8vused8vto8vcombat8vscale?8v-8vANSWERS--
Combined8vphosphate8vtreatment-8vsodium8vphosphate

Other8vthan8vsulfite8vwhat8vchemical8vis8vused8vto8vcombat8vcorrosion8vin8vboilers?8v-
8vANSWERS--Hydrazine



What8vwill8vneutralize8vacid?8v-8vANSWERS--Alkali8vand8vLime8vSoda

What8vmechanical8vdevice8vis8vused8vto8vremove8vscale8vfrom8vfiretubes?8v-
8vANSWERS--A8vtube8vrattler8vor8vvibrator



What8vpercentage8vof8vthe8vpressure8vshould8va8vboiler8vhave8vbefore8vyou8vtest8vthe8vlev
er8vof8va8vsafety8vvalve?8v-8vANSWERS--75%

Where8vis8vinternal8vcorrosion8vmost8vlikely8vto8voccur8von8va8vvertical8vtube8vboiler?8v-
8vANSWERS--Water8vleg-Mud8vleg



What8vare8vthe8vminimum8vand8vmaximum8vsizes8vpermitted8vfor8vblow8vdown8vvalves8vor
8vconnections?8v-8vANSWERS--3/4"minimum8v28v½8v"8vmaximum



A8vboiler8voperating8vat8va8vpressure8vof8v65lbs.8vWhat8vis8vthe8vsmallest8vsize8vfeed8vand8v
blow8voff8vconnections8vif8vthe8vsafety8vvalve8vis8vset8vat8v908vpsi?8v-8vANSWERS--
½8v"8vfeed8v¾8v"8vblow8voff

How8voften8vshould8vwater8vcolumns8vand8vwater8vglass8vlevels8vbe8vchecked8von8va8vhig
h8vpressure8vboiler?8v-8vANSWERS--(Once8vA8vShift)\
nAt8vthe8vbeginning8vof8veach8vshift8v-8vbeginning8vof8vthe8vwork8veffort

What8vtakes8vno8vactual8vaction8vchemical8vpart8vin8vcombustion?8v-8vANSWERS--
Nitrogen

How8vmany8vppm8vof8vEDTA8vare8vneeded8vto8vtie8vup8v1ppm8vof8vhardness?8v-
8vANSWERS--

EDTA8vrequires8v10ppm8vof8vEDTA8vand8v58vNTA8vto8vtie8vup8veach8v1ppm8vhardness.

On8va8vpackage8vboiler;8vhow8vmany8vways8vcould8vcause8vfire8vpuffs8vwhen8vit8vis8vstarte
d8vup?8v-8vANSWERS--68vways8v1-poor8vstarting8vdraft8v2-incorrect8vfirebox8v3-
wrong8vburner8vnozzle8v4-lean8vfire8v5-
8vinsufficient8vgas8vpilot8vor8vexcessive8vgas8vpilot8v6-water8vin8vthe8voil



What8vis8vthe8vgrade8vof8vlight8vdomestic8vfuel8voil8v?8v-8vANSWERS--
Grade8v18v(8vNumber8v18v)

How8voften8vshould8vyou8vtest8vthe8voperating8vcontrol?8v-8vANSWERS--Annually

How8voften8vshould8vthe8vtesting8vand8vinspecting8vof8vthe8vburner8vcomponent?8v-
8vANSWERS--Annually