Stationary Engineer Exam Questions With
Correct Answers
How |much |clearance |from |the |top |of |the |boiler |is |needed |for |a |HP |boiler |that |produces |70000
|lbs |of |steam? |- |CORRECT |ANSWER✔✔-7 |feet
On |a |gas |fired |boiler |what |is |the |proper |gas |to |air |mixture |- |CORRECT |ANSWER✔✔-30%-70% |
and |in |special |arrangements |it |can |be |as |high |as |100% |. |ANSWER |CHAPTER |11 |remember%
What |is |the |total |hardness |in |a |system |that |was |found |to |have |calcium |hardness |of |60ppm |
and |magnesium |hardness |of |18ppm |and |carbon |hardness |of |12 |ppm? |- |CORRECT |
ANSWER✔✔-TH=(Ca |x |2.5) |+ |(Mg |x |4.1)\nTH=(60 |x |2.5) |+ |(18 |x |4.1)\nTH= |150+73.8 |=( |223.8 |
PPM)
How |often |should |a |complete |external |inspection |of |the |boiler |be |done? |- |CORRECT |
ANSWER✔✔-Once |a |Shift
With |24 |hr |operation |how |often |do |you |check |the |water |level? |- |CORRECT |ANSWER✔✔-Once |
per |shift
How |often |do |you |check |the |LWCO? |- |CORRECT |ANSWER✔✔-Once |per |shift
How |often |do |you |check |the |High |Limit |Switch? |- |CORRECT |ANSWER✔✔-Annually
A |2" |pipe |was |found |to |be |delivering |water |at |100 |psia |at |1040ft |per |second. |How |many |
gallons |per |hour |will |it |deliver? |- |CORRECT |ANSWER✔✔-GPM= |V |(diameter |squared) |divided |
by |.4085 |ANSWER |pg |469 |BOG
,What |controls |the |amount |of |blowback |on |a |safety |valve? |- |CORRECT |ANSWER✔✔-Blowback |
ring |or |adjusting |ring
On |a |open |air |expansion |tank |hot |water |boiler |system; |how |high |should |it |be |mounted? |- |
CORRECT |ANSWER✔✔-(4 |Feet |) |above |the |highest |heating |element.
What |is |the |minimum |top |clearance |of |boilers |with |manholes? |- |CORRECT |ANSWER✔✔-5 |feet
Package |boilers; |steam |heating |boilers |and |hot |water |heating |boilers |shall |have |a |minimum |
clearance |of? |- |CORRECT |ANSWER✔✔-2 |feet |from |ceiling. |Code |chapter |10 |page76
Most |important |safety |device |on |a |boiler? |- |CORRECT |ANSWER✔✔-Safety |relief |valve
What |does |a |Black |Liquor |Boiler |do? |- |CORRECT |ANSWER✔✔-Black |Liquor |is |the |by |product |of
|wood |pulp |processing |in |the |paper |making |industry.
What |does |Black |liquor |boiler |known |for? |- |CORRECT |ANSWER✔✔-Steam |generation |and |
recovery |of |soda |ash
Maximum |line |voltage |for |control |on |a |boiler? |- |CORRECT |ANSWER✔✔-150 |volts
Under |what |code |are |boilers |designed |and |constructed? |- |CORRECT |ANSWER✔✔-ASME- |CSD |1
How |many |low |water |cut |offs |are |needed |per |code |for |a |hot |water |system |when |a |boiler |has |
inputs |greater |than |400,000 |btu |per |hr |- |CORRECT |ANSWER✔✔-1 |LWCO |is |needed.
,What |is |the |minimum |and |maximum |size |for |a |safety |valve |per |code |for |boilers? |- |CORRECT |
ANSWER✔✔-Minimum |3/4" |and |Maximum |4 |1/2"
What |stamp |is |put |on |a |boiler |after |repairs? |- |CORRECT |ANSWER✔✔-"R"
What |is |the |equalizing |system |used |for? |- |CORRECT |ANSWER✔✔-The |equalizing |system |is |for |
warming |up |the |steam |lead.
A |blowdown |valve |is |located |at |the |lowest |water |space |of |a |boiler |for |three |purposes |- |
CORRECT |ANSWER✔✔-1. |to |remove |precipitated |sludge |or |loose |scale |\n2. |To |permit |rapid |
lowering |of |the |boiler |water |if |it |has |become |too |high |accidentally |\n3. |As |a |means |of |
removing |water |from |the |boiler |so |that |fresh |water |may |be |added |to |keep |the |concentration |
of |solids |below |the |point |where |difficulties |may |be |experienced.
In |the |old |power |boiler |which |type |of |feed-water |regulators |were |not |used? |- |CORRECT |
ANSWER✔✔-Electronic
After |opening |a |boiler |for |repairs |how |much |oxygen |is |needed? |- |CORRECT |ANSWER✔✔-19%
What |is |the |first |thing |you |do |when |shutting |down |a |boiler? |- |CORRECT |ANSWER✔✔-Turn |off |
(extinguish |fire)
What |is |the |legal |limit |of |acceptable |asbestos |particles |? |- |CORRECT |ANSWER✔✔-0.1 |fibers |
per |cubic |centimeter
What |is |CREEP? |- |CORRECT |ANSWER✔✔-Creep |is |defined |as |the |slow |deformation |of |material
|with |time; |with |the |deformation |taking |place |at |elevated |temperatures |with |no |increase |in |
stress.
What |is |the |BTU |content |of |Anthracite |coal? |- |CORRECT |ANSWER✔✔-14000 |btu/lb
, What |substance |transfers |electrical |current |in |a |photocell? |- |CORRECT |ANSWER✔✔-Electricity |
will |flow |when |the |CADMIUM |is |exposed |to |sufficient |light.
What |device |acts |as |a |check |valve |in |both |directions |and |keeps |pumps |primed? |- |CORRECT |
ANSWER✔✔-FOOT |VALVES |are |used |for |pumps |under |suction |pressure |to |prevent |backflow |
primed? |on |the |suction |line.
What |protects |boilers |from |explosion |in |the |furnace? |- |CORRECT |ANSWER✔✔-A |flame |guard |
system |is |an |arrangement |of |flame |detection |system; |interlocks; |and |relays |which |will |sense |
the |presence |of |a |proper |flame |in |a |furnace |and |cause |fuel |to |be |shut |off |to |the |furnace |if |a |
hazardous |condition |develops |(improper |flame |or |combustion).
What |size |pipe |is |used |as |a |header |in |a |boiler |operating |at |100psi? |- |CORRECT |ANSWER✔✔-6 |
inches
What |device |is |used |to |measure |flue |gasses |- |CORRECT |ANSWER✔✔-The |Orsat |Analyzer
Which |low |water |cut |off |does |not |have |a |mercury |switch? |- |CORRECT |ANSWER✔✔-The |
Submerged |electrode |type
What |is |the |btu |output |per |lb |of |#4 |fuel |oil? |- |CORRECT |ANSWER✔✔-18
What |substance |is |used |for |the |electric |transmission |in |an |RTD? |- |CORRECT |ANSWER✔✔-
Platinum |is |used |because |of |its |stability |at |high |temperatures
How |much |air |is |needed |for |the |combustion |of |pulverized |coal; |gas; |oil? |- |CORRECT |
ANSWER✔✔-50% |for |coal |and |10-30% |for |gas |& |oil
Correct Answers
How |much |clearance |from |the |top |of |the |boiler |is |needed |for |a |HP |boiler |that |produces |70000
|lbs |of |steam? |- |CORRECT |ANSWER✔✔-7 |feet
On |a |gas |fired |boiler |what |is |the |proper |gas |to |air |mixture |- |CORRECT |ANSWER✔✔-30%-70% |
and |in |special |arrangements |it |can |be |as |high |as |100% |. |ANSWER |CHAPTER |11 |remember%
What |is |the |total |hardness |in |a |system |that |was |found |to |have |calcium |hardness |of |60ppm |
and |magnesium |hardness |of |18ppm |and |carbon |hardness |of |12 |ppm? |- |CORRECT |
ANSWER✔✔-TH=(Ca |x |2.5) |+ |(Mg |x |4.1)\nTH=(60 |x |2.5) |+ |(18 |x |4.1)\nTH= |150+73.8 |=( |223.8 |
PPM)
How |often |should |a |complete |external |inspection |of |the |boiler |be |done? |- |CORRECT |
ANSWER✔✔-Once |a |Shift
With |24 |hr |operation |how |often |do |you |check |the |water |level? |- |CORRECT |ANSWER✔✔-Once |
per |shift
How |often |do |you |check |the |LWCO? |- |CORRECT |ANSWER✔✔-Once |per |shift
How |often |do |you |check |the |High |Limit |Switch? |- |CORRECT |ANSWER✔✔-Annually
A |2" |pipe |was |found |to |be |delivering |water |at |100 |psia |at |1040ft |per |second. |How |many |
gallons |per |hour |will |it |deliver? |- |CORRECT |ANSWER✔✔-GPM= |V |(diameter |squared) |divided |
by |.4085 |ANSWER |pg |469 |BOG
,What |controls |the |amount |of |blowback |on |a |safety |valve? |- |CORRECT |ANSWER✔✔-Blowback |
ring |or |adjusting |ring
On |a |open |air |expansion |tank |hot |water |boiler |system; |how |high |should |it |be |mounted? |- |
CORRECT |ANSWER✔✔-(4 |Feet |) |above |the |highest |heating |element.
What |is |the |minimum |top |clearance |of |boilers |with |manholes? |- |CORRECT |ANSWER✔✔-5 |feet
Package |boilers; |steam |heating |boilers |and |hot |water |heating |boilers |shall |have |a |minimum |
clearance |of? |- |CORRECT |ANSWER✔✔-2 |feet |from |ceiling. |Code |chapter |10 |page76
Most |important |safety |device |on |a |boiler? |- |CORRECT |ANSWER✔✔-Safety |relief |valve
What |does |a |Black |Liquor |Boiler |do? |- |CORRECT |ANSWER✔✔-Black |Liquor |is |the |by |product |of
|wood |pulp |processing |in |the |paper |making |industry.
What |does |Black |liquor |boiler |known |for? |- |CORRECT |ANSWER✔✔-Steam |generation |and |
recovery |of |soda |ash
Maximum |line |voltage |for |control |on |a |boiler? |- |CORRECT |ANSWER✔✔-150 |volts
Under |what |code |are |boilers |designed |and |constructed? |- |CORRECT |ANSWER✔✔-ASME- |CSD |1
How |many |low |water |cut |offs |are |needed |per |code |for |a |hot |water |system |when |a |boiler |has |
inputs |greater |than |400,000 |btu |per |hr |- |CORRECT |ANSWER✔✔-1 |LWCO |is |needed.
,What |is |the |minimum |and |maximum |size |for |a |safety |valve |per |code |for |boilers? |- |CORRECT |
ANSWER✔✔-Minimum |3/4" |and |Maximum |4 |1/2"
What |stamp |is |put |on |a |boiler |after |repairs? |- |CORRECT |ANSWER✔✔-"R"
What |is |the |equalizing |system |used |for? |- |CORRECT |ANSWER✔✔-The |equalizing |system |is |for |
warming |up |the |steam |lead.
A |blowdown |valve |is |located |at |the |lowest |water |space |of |a |boiler |for |three |purposes |- |
CORRECT |ANSWER✔✔-1. |to |remove |precipitated |sludge |or |loose |scale |\n2. |To |permit |rapid |
lowering |of |the |boiler |water |if |it |has |become |too |high |accidentally |\n3. |As |a |means |of |
removing |water |from |the |boiler |so |that |fresh |water |may |be |added |to |keep |the |concentration |
of |solids |below |the |point |where |difficulties |may |be |experienced.
In |the |old |power |boiler |which |type |of |feed-water |regulators |were |not |used? |- |CORRECT |
ANSWER✔✔-Electronic
After |opening |a |boiler |for |repairs |how |much |oxygen |is |needed? |- |CORRECT |ANSWER✔✔-19%
What |is |the |first |thing |you |do |when |shutting |down |a |boiler? |- |CORRECT |ANSWER✔✔-Turn |off |
(extinguish |fire)
What |is |the |legal |limit |of |acceptable |asbestos |particles |? |- |CORRECT |ANSWER✔✔-0.1 |fibers |
per |cubic |centimeter
What |is |CREEP? |- |CORRECT |ANSWER✔✔-Creep |is |defined |as |the |slow |deformation |of |material
|with |time; |with |the |deformation |taking |place |at |elevated |temperatures |with |no |increase |in |
stress.
What |is |the |BTU |content |of |Anthracite |coal? |- |CORRECT |ANSWER✔✔-14000 |btu/lb
, What |substance |transfers |electrical |current |in |a |photocell? |- |CORRECT |ANSWER✔✔-Electricity |
will |flow |when |the |CADMIUM |is |exposed |to |sufficient |light.
What |device |acts |as |a |check |valve |in |both |directions |and |keeps |pumps |primed? |- |CORRECT |
ANSWER✔✔-FOOT |VALVES |are |used |for |pumps |under |suction |pressure |to |prevent |backflow |
primed? |on |the |suction |line.
What |protects |boilers |from |explosion |in |the |furnace? |- |CORRECT |ANSWER✔✔-A |flame |guard |
system |is |an |arrangement |of |flame |detection |system; |interlocks; |and |relays |which |will |sense |
the |presence |of |a |proper |flame |in |a |furnace |and |cause |fuel |to |be |shut |off |to |the |furnace |if |a |
hazardous |condition |develops |(improper |flame |or |combustion).
What |size |pipe |is |used |as |a |header |in |a |boiler |operating |at |100psi? |- |CORRECT |ANSWER✔✔-6 |
inches
What |device |is |used |to |measure |flue |gasses |- |CORRECT |ANSWER✔✔-The |Orsat |Analyzer
Which |low |water |cut |off |does |not |have |a |mercury |switch? |- |CORRECT |ANSWER✔✔-The |
Submerged |electrode |type
What |is |the |btu |output |per |lb |of |#4 |fuel |oil? |- |CORRECT |ANSWER✔✔-18
What |substance |is |used |for |the |electric |transmission |in |an |RTD? |- |CORRECT |ANSWER✔✔-
Platinum |is |used |because |of |its |stability |at |high |temperatures
How |much |air |is |needed |for |the |combustion |of |pulverized |coal; |gas; |oil? |- |CORRECT |
ANSWER✔✔-50% |for |coal |and |10-30% |for |gas |& |oil
