BLACK SEAL TEST 232 QUESTIONS WITH COMPLETE
SOLUTIONS VERIFIED LATEST UPDATE 2025-2026
What ||does ||PSIA ||stand ||for? ||-CORRECTANSWER ||Psig ||+ ||atmospheric ||pressure
Carryover ||can ||lead ||to: ||-CORRECTANSWER ||Water ||Hammer
Water ||column ||& ||gauge ||glass ||should ||be ||blown ||down: ||-CORRECTANSWER ||Daily
If ||water ||leaves ||the ||boiler ||at ||170•, ||what ||temperature ||does ||it ||return ||at? || -
CORRECTANSWER ||150•
What ||is ||the ||most ||common ||cause ||of ||cast ||iron ||boiler ||failure? ||-CORRECTANSWER
Cracking
The ||positioning ||control ||cannot ||function ||without: ||-CORRECTANSWER ||Air
What ||is ||the ||most ||common ||of ||problems ||in ||a ||hot ||water ||system? ||-CORRECTANSWER
||Air
What ||fire ||tube ||is ||most ||efficient? ||-CORRECTANSWER ||4 ||Pass
Where ||are ||the ||combustion ||gases ||on ||a ||serpentine ||boiler? ||-CORRECTANSWER ||Below
the ||tubes
,What ||is ||the ||purpose ||of ||a ||check ||valve? ||-CORRECTANSWER ||To ||Prevent ||reverse ||flow ||&
Allow ||flow ||in ||one ||direction
A ||solenoid ||valve: ||-CORRECTANSWER ||Is ||an ||automatic ||gas ||shutoff ||valve
The ||most ||common ||type ||of ||pressure ||control ||device ||used ||is ||the: ||-CORRECTANSWER
Mercury ||Tube
A ||steam ||gauge ||is ||calibrated ||in: ||-CORRECTANSWER ||Lbs/Sq. ||Inch
Heavy ||soot ||on ||the ||fireside ||of ||tubes: ||-CORRECTANSWER ||Should ||be ||removed ||for ||better
heat ||transfer
What ||code ||is ||a ||heating ||boiler ||built ||to: ||-CORRECTANSWER ||ASME ||Section ||IV(4)
When ||connecting ||a ||Bourdon ||tube ||steam ||gauge ||to ||a ||boiler, ||a ||pigtail ||is ||used ||to: || -
CORRECTANSWER ||Protect ||Bourdon ||tube ||from ||steam
External ||feed ||water ||treatment ||can ||be ||a process. ||-CORRECTANSWER ||Cold ||lime
soda, ||hot ||lime ||soda, ||or ||ion ||exchange
Natural ||water ||may ||contain: ||-CORRECTANSWER ||Solids ||and ||other ||pollutions
, What ||is ||the ||min. ||temp ||of ||a ||hot ||water ||boiler ||operation ||to ||prevent ||condensation? || -
CORRECTANSWER ||170 ||F
What ||test ||is ||performed ||on ||re-tubed ||(repaired) ||boiler ||and ||what ||is ||the ||water ||temp.? ||-
CORRECTANSWER ||Hydrostatic ||test ||at ||70F
T/F: ||The ||amount ||of ||draft ||is ||not ||affected ||by ||the ||height ||of ||the ||stack. || -
CORRECTANSWER
False
Under ||what ||ASME ||section ||is ||the ||care ||and ||operation ||of ||heating ||boilers? ||-
CORRECTANSWER ||Section ||VI ||(6)
A ||aquastat ||is ||sensitive ||to ||changes ||in: ||-CORRECTANSWER ||Water ||temperature
The ||expansion ||tank ||in ||a ||hot ||water ||system ||allows ||for ||the ||expansion ||of: ||-
CORRECTANSWER ||Water
Who ||can ||adjust ||a ||safety ||valve? ||-CORRECTANSWER ||Manufacturer ||Representative
As ||the ||water ||in ||a ||hot ||water ||system ||expands: ||-CORRECTANSWER ||The ||pressure
remains ||constant
SOLUTIONS VERIFIED LATEST UPDATE 2025-2026
What ||does ||PSIA ||stand ||for? ||-CORRECTANSWER ||Psig ||+ ||atmospheric ||pressure
Carryover ||can ||lead ||to: ||-CORRECTANSWER ||Water ||Hammer
Water ||column ||& ||gauge ||glass ||should ||be ||blown ||down: ||-CORRECTANSWER ||Daily
If ||water ||leaves ||the ||boiler ||at ||170•, ||what ||temperature ||does ||it ||return ||at? || -
CORRECTANSWER ||150•
What ||is ||the ||most ||common ||cause ||of ||cast ||iron ||boiler ||failure? ||-CORRECTANSWER
Cracking
The ||positioning ||control ||cannot ||function ||without: ||-CORRECTANSWER ||Air
What ||is ||the ||most ||common ||of ||problems ||in ||a ||hot ||water ||system? ||-CORRECTANSWER
||Air
What ||fire ||tube ||is ||most ||efficient? ||-CORRECTANSWER ||4 ||Pass
Where ||are ||the ||combustion ||gases ||on ||a ||serpentine ||boiler? ||-CORRECTANSWER ||Below
the ||tubes
,What ||is ||the ||purpose ||of ||a ||check ||valve? ||-CORRECTANSWER ||To ||Prevent ||reverse ||flow ||&
Allow ||flow ||in ||one ||direction
A ||solenoid ||valve: ||-CORRECTANSWER ||Is ||an ||automatic ||gas ||shutoff ||valve
The ||most ||common ||type ||of ||pressure ||control ||device ||used ||is ||the: ||-CORRECTANSWER
Mercury ||Tube
A ||steam ||gauge ||is ||calibrated ||in: ||-CORRECTANSWER ||Lbs/Sq. ||Inch
Heavy ||soot ||on ||the ||fireside ||of ||tubes: ||-CORRECTANSWER ||Should ||be ||removed ||for ||better
heat ||transfer
What ||code ||is ||a ||heating ||boiler ||built ||to: ||-CORRECTANSWER ||ASME ||Section ||IV(4)
When ||connecting ||a ||Bourdon ||tube ||steam ||gauge ||to ||a ||boiler, ||a ||pigtail ||is ||used ||to: || -
CORRECTANSWER ||Protect ||Bourdon ||tube ||from ||steam
External ||feed ||water ||treatment ||can ||be ||a process. ||-CORRECTANSWER ||Cold ||lime
soda, ||hot ||lime ||soda, ||or ||ion ||exchange
Natural ||water ||may ||contain: ||-CORRECTANSWER ||Solids ||and ||other ||pollutions
, What ||is ||the ||min. ||temp ||of ||a ||hot ||water ||boiler ||operation ||to ||prevent ||condensation? || -
CORRECTANSWER ||170 ||F
What ||test ||is ||performed ||on ||re-tubed ||(repaired) ||boiler ||and ||what ||is ||the ||water ||temp.? ||-
CORRECTANSWER ||Hydrostatic ||test ||at ||70F
T/F: ||The ||amount ||of ||draft ||is ||not ||affected ||by ||the ||height ||of ||the ||stack. || -
CORRECTANSWER
False
Under ||what ||ASME ||section ||is ||the ||care ||and ||operation ||of ||heating ||boilers? ||-
CORRECTANSWER ||Section ||VI ||(6)
A ||aquastat ||is ||sensitive ||to ||changes ||in: ||-CORRECTANSWER ||Water ||temperature
The ||expansion ||tank ||in ||a ||hot ||water ||system ||allows ||for ||the ||expansion ||of: ||-
CORRECTANSWER ||Water
Who ||can ||adjust ||a ||safety ||valve? ||-CORRECTANSWER ||Manufacturer ||Representative
As ||the ||water ||in ||a ||hot ||water ||system ||expands: ||-CORRECTANSWER ||The ||pressure
remains ||constant
