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Black Seal Exam Newest 2025/2026 Complete All Questions And Correct Detailed Answers (Verified Answers) |Already Graded A+||Brand New Version!
What is the main purpose of a check valve on the boiler feedwater line? - ANSWER-To allow flow in one direction only
The main function of a water column on a steam pressure boiler
is to: - ANSWER-Slow down movement of water to get accurate
reading of water levels
A steam pressure gauge is designed to show steam calibrated in:
- ANSWER-Lbs. / Sq. Inch
The primary function of the MBCS ( Micro burner combustion
system) is: - ANSWER-Combustion Safety
What is the purpose of the aquastat? - ANSWER-Control Water Temperature
What is the name of the device used to keep live steam from getting into a pressure gauge? - ANSWER-Siphon loop 1 / 4
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What is the minimum temperature at which a hot water heating boiler should be operates at to prevent flue gas condensation? -
ANSWER-170 F
The vaporstat should be electrically interlocked with the: -
ANSWER-Fuel solenoid valve
What is the name of the science that is used for heating while using water as a conveying medium? - ANSWER-Hydronics
Automatic feedwater regulators are blown down how often? - ANSWER-Daily
A safety valve on a low pressure hot water boiler will have a
maximum setting of: - ANSWER-160 psig
Hard water contains____. - ANSWER-Scale-forming salts
According to NJ Mechanical Inspection Bureau rules, the boiler jurisdiction (regulation) number must be placed on the ___ of each boiler - ANSWER-Front 2 / 4
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On a low pressure boiler, after start-up, when do you close the vent valve? - ANSWER-When the steam comes out
How are cast iron sectional boilers put together? - ANSWER- With push nipples and bolts
What is the maximum horsepower a NJ low pressure licenced operator can operate up to? - ANSWER-No limit
New or retubed boilers should be cleaned with: - ANSWER-An
alkaline solution
In the state of NJ, safety valves on low and high pressure boilers should be tested how often? - ANSWER-Monthly
One boiler horsepower, according to NJ Mechanical Inspection
Bureau, equals: - ANSWER-34.5 lbs. of steam per hour @ 212 F
When starting a shift, the first thing a boiler operator should
check is: - ANSWER-The water levels of all boilers
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In the event of a flame failure, the programmer will ___. - ANSWER-Secure the fire, Purge the firebox, and then shut down.
How often would you blow down a boiler with no chemical water analysis? - ANSWER-Daily
Absolute Pressure is equal to _____. - ANSWER-Gauge Pressure + Atmospheric Pressure
Heavy accumulations of soot on heating surfaces can lead to: -
ANSWER-Decrease in boiler capacity
Where should the boiler regulation number be located? - ANSWER-On the front of the boiler
The ____ regulates the high and low fire of the burner? - ANSWER-Modulating Pressure Control
The water column and gauge glass should usually be blown down _____. - ANSWER-Daily
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