BLACK SEAL HIGH PRESSURE UPDATED EXAMS
TEST PAPER QUESTIONS AND ANSWERS SURE A+
✔✔What should you do if you walked into a boiler room and the safety valves were
popped? - ✔✔secure the fire at the burner
✔✔What letter stamp denotes a low pressure boiler? - ✔✔H
✔✔In NJ, how often should boilers over 100 horsepower be inspected internally &
externally? - ✔✔annually
✔✔A manometer is calibrated in what units of measurement? - ✔✔inches of water
✔✔Bottom blowdown is best performed when the boiler is _____. - ✔✔under light load
✔✔What is the main purpose of a check valve on the boiler feedwater line? - ✔✔allow
flow in one direction only
✔✔The main function of a water column on a steam pressure boiler is to: - ✔✔slow
down movement o water to get an accurate reading of water levels
, ✔✔A steam pressure gauge is designed to show steam calibrated in: - ✔✔pounds per
square inch
✔✔The primary function of the MBCS (micro burner combustion system) is: -
✔✔combustion safety
✔✔What is the purpose of an aquastat? - ✔✔controls water temperature
✔✔What is the name of the device used to keep live steam from getting into a pressure
gauge? - ✔✔siphon loop
✔✔What is the minimum temperature at which a hot water heating boiler should be
operated at to prevent flue gas condensation? - ✔✔170 degrees
✔✔What is the name of the science that is used for heating while using water as a
conveying medium? - ✔✔hydronics
✔✔The high limit setting on a low pressure steam boiler must not exceed? - ✔✔15 psig
✔✔A safety valve on a low pressure hot water boiler will have a maximum setting of: -
✔✔160 psig
✔✔What causes scale? - ✔✔calcium and magnesium
✔✔Where should the registration number be located on each boiler in New Jersey? -
✔✔front
✔✔On a low pressure boiler, after start-up, when do you close the vent valve? -
✔✔when steam comes out
✔✔How are cast iron sectional boilers put together? - ✔✔with push nipples and bolts
✔✔What is the line voltage used in an ignition transformer? - ✔✔usually 120 VAC
✔✔When cleaning a new or re-tubed boiler, what should be used? - ✔✔an alkaline
solution
✔✔In the state of NJ, safety valves on low and high pressure boilers should be tested
how often? - ✔✔monthly
✔✔What is the best way to describe a thermocouple? - ✔✔two different metals welded
together
TEST PAPER QUESTIONS AND ANSWERS SURE A+
✔✔What should you do if you walked into a boiler room and the safety valves were
popped? - ✔✔secure the fire at the burner
✔✔What letter stamp denotes a low pressure boiler? - ✔✔H
✔✔In NJ, how often should boilers over 100 horsepower be inspected internally &
externally? - ✔✔annually
✔✔A manometer is calibrated in what units of measurement? - ✔✔inches of water
✔✔Bottom blowdown is best performed when the boiler is _____. - ✔✔under light load
✔✔What is the main purpose of a check valve on the boiler feedwater line? - ✔✔allow
flow in one direction only
✔✔The main function of a water column on a steam pressure boiler is to: - ✔✔slow
down movement o water to get an accurate reading of water levels
, ✔✔A steam pressure gauge is designed to show steam calibrated in: - ✔✔pounds per
square inch
✔✔The primary function of the MBCS (micro burner combustion system) is: -
✔✔combustion safety
✔✔What is the purpose of an aquastat? - ✔✔controls water temperature
✔✔What is the name of the device used to keep live steam from getting into a pressure
gauge? - ✔✔siphon loop
✔✔What is the minimum temperature at which a hot water heating boiler should be
operated at to prevent flue gas condensation? - ✔✔170 degrees
✔✔What is the name of the science that is used for heating while using water as a
conveying medium? - ✔✔hydronics
✔✔The high limit setting on a low pressure steam boiler must not exceed? - ✔✔15 psig
✔✔A safety valve on a low pressure hot water boiler will have a maximum setting of: -
✔✔160 psig
✔✔What causes scale? - ✔✔calcium and magnesium
✔✔Where should the registration number be located on each boiler in New Jersey? -
✔✔front
✔✔On a low pressure boiler, after start-up, when do you close the vent valve? -
✔✔when steam comes out
✔✔How are cast iron sectional boilers put together? - ✔✔with push nipples and bolts
✔✔What is the line voltage used in an ignition transformer? - ✔✔usually 120 VAC
✔✔When cleaning a new or re-tubed boiler, what should be used? - ✔✔an alkaline
solution
✔✔In the state of NJ, safety valves on low and high pressure boilers should be tested
how often? - ✔✔monthly
✔✔What is the best way to describe a thermocouple? - ✔✔two different metals welded
together
