Black seal TC Exam Questions and Answers Latest Update 2025 Already Passed
At 0 psig, how many Btu's are necessary to change 1 pound of water at 212F into 1 pound of steam? -
Answers 970.3
Steam at 100psi and 400F is - Answers superheated
What is required to raise the temperature of 1 pound of water from 32F to 212F? - Answers 180 Btu
A boiler horsepower is defined as - Answers evaporation of 34.5 pounds of water
One boiler horsepower is equal to how many Btu's - Answers 33,472
2545 Btu hours represents - Answers 1 horsepower hour
Atmospheric pressure is considered to be - Answers 14.7psi
In a water tube boiler, the gases of combustion will pass - Answers around the tubes
What is the minimum thickness allowed for an atmospheric type blowdown tank? - Answers 5/16
Before the burner ignites, what is the minimum number of furnace volume air changes that should be
provided by the purge cycle? - Answers four
Which best describes balanced draft? - Answers forced and induced draft fans keep the furnace below
atmospheric pressure
Which formula would you use to calculate the Btu/lb. heat content of fuel oil? - Answers 17,687 + 57.7 x
API at 60F
Which stack gas reading would show good combustion? - Answers low oxygen and carbon monoxide,
high carbon dioxide
What ASME code denotes a high pressure power boiler? - Answers S
Where would you find a cyclone separator? - Answers in the stream drum
What is the total force acting on a safety valve of a 325 psi boiler with a 2 ½' diameter safety valve? -
Answers 1595.34
What is the overspeed trip setting on a turbine with a normal operating speed of 1770 rpm? - Answers
1947rpm
Saturated steam is defined as - Answers steam at a temperature corresponding to its pressure
One mechanical horsepower is equal to - Answers 33000ft lb/min
Why are boiler manways and handholes oval? - Answers for removal from pressure vessels
, Shrouds are found on what piece of auxiliary equipment? - Answers steam turbines
Where is caustic embrittlement most likely to occur? - Answers on a riveted joint below the water line
What two elements in fuel oil produce most of its heat? - Answers carbon and hydrogen
What is the heating surface of water tube with a diameter of 3 ½" and 20 ft long? - Answers 18.32ftsq
Where should sodium sulfite be added to a boiler for maximum efficiency? - Answers the deaerator
What is the horsepower of a 35,500 #/hr boiler with an evaporation rate of 10lb/ftsq of heating surface
per/hr? - Answers 1000HP
If steam were reduced by a PRV from 500psi to 125psi, the steam at 125psi would have - Answers same
heat as 500psi
Which device would be found on the inlet line of a steam turbine condenser? - Answers atmospheric
relief valve
A two element feedwater regulator is controlled by - Answers water level and steam flow rate
A boiler that has had work done on it should have what type of test - Answers hydrostatic test
When blowing down a boiler, the quick-opening valve should always be opened ___and closed___ -
Answers First,Last
The range of the pressure gauge should be___times the MAWP of the boiler - Answers 1 ½ to 2
Why are small holes drilled in the ends of stay bolts? - Answers to detect leaks or cracks
How many Btu's can the burning of one gallon of #6 oil produce? - Answers 148,000 BTU's
What is the proper oil storage temperature for #6 oil? - Answers 20F above pour point
Total force is equal to___ - Answers area times pressure
When preparing a boiler for a hydrostatic test, what is the best temperature for the boiler water to be
at? - Answers 70F
Why do we us economizers on boilers? - Answers heats feedwater
What is the renewal fee for boiler licenses for 3 years in the State of NJ? - Answers $80
If your license expired and you pay a penalty, how long can it be expired before you must re-apply and
take the exam over again? - Answers three years
In order to get a black seal fireman's license, you must be - Answers at least 18 years of age
Name the valve that must be between the safety valve and the boiler - Answers no valve
At 0 psig, how many Btu's are necessary to change 1 pound of water at 212F into 1 pound of steam? -
Answers 970.3
Steam at 100psi and 400F is - Answers superheated
What is required to raise the temperature of 1 pound of water from 32F to 212F? - Answers 180 Btu
A boiler horsepower is defined as - Answers evaporation of 34.5 pounds of water
One boiler horsepower is equal to how many Btu's - Answers 33,472
2545 Btu hours represents - Answers 1 horsepower hour
Atmospheric pressure is considered to be - Answers 14.7psi
In a water tube boiler, the gases of combustion will pass - Answers around the tubes
What is the minimum thickness allowed for an atmospheric type blowdown tank? - Answers 5/16
Before the burner ignites, what is the minimum number of furnace volume air changes that should be
provided by the purge cycle? - Answers four
Which best describes balanced draft? - Answers forced and induced draft fans keep the furnace below
atmospheric pressure
Which formula would you use to calculate the Btu/lb. heat content of fuel oil? - Answers 17,687 + 57.7 x
API at 60F
Which stack gas reading would show good combustion? - Answers low oxygen and carbon monoxide,
high carbon dioxide
What ASME code denotes a high pressure power boiler? - Answers S
Where would you find a cyclone separator? - Answers in the stream drum
What is the total force acting on a safety valve of a 325 psi boiler with a 2 ½' diameter safety valve? -
Answers 1595.34
What is the overspeed trip setting on a turbine with a normal operating speed of 1770 rpm? - Answers
1947rpm
Saturated steam is defined as - Answers steam at a temperature corresponding to its pressure
One mechanical horsepower is equal to - Answers 33000ft lb/min
Why are boiler manways and handholes oval? - Answers for removal from pressure vessels
, Shrouds are found on what piece of auxiliary equipment? - Answers steam turbines
Where is caustic embrittlement most likely to occur? - Answers on a riveted joint below the water line
What two elements in fuel oil produce most of its heat? - Answers carbon and hydrogen
What is the heating surface of water tube with a diameter of 3 ½" and 20 ft long? - Answers 18.32ftsq
Where should sodium sulfite be added to a boiler for maximum efficiency? - Answers the deaerator
What is the horsepower of a 35,500 #/hr boiler with an evaporation rate of 10lb/ftsq of heating surface
per/hr? - Answers 1000HP
If steam were reduced by a PRV from 500psi to 125psi, the steam at 125psi would have - Answers same
heat as 500psi
Which device would be found on the inlet line of a steam turbine condenser? - Answers atmospheric
relief valve
A two element feedwater regulator is controlled by - Answers water level and steam flow rate
A boiler that has had work done on it should have what type of test - Answers hydrostatic test
When blowing down a boiler, the quick-opening valve should always be opened ___and closed___ -
Answers First,Last
The range of the pressure gauge should be___times the MAWP of the boiler - Answers 1 ½ to 2
Why are small holes drilled in the ends of stay bolts? - Answers to detect leaks or cracks
How many Btu's can the burning of one gallon of #6 oil produce? - Answers 148,000 BTU's
What is the proper oil storage temperature for #6 oil? - Answers 20F above pour point
Total force is equal to___ - Answers area times pressure
When preparing a boiler for a hydrostatic test, what is the best temperature for the boiler water to be
at? - Answers 70F
Why do we us economizers on boilers? - Answers heats feedwater
What is the renewal fee for boiler licenses for 3 years in the State of NJ? - Answers $80
If your license expired and you pay a penalty, how long can it be expired before you must re-apply and
take the exam over again? - Answers three years
In order to get a black seal fireman's license, you must be - Answers at least 18 years of age
Name the valve that must be between the safety valve and the boiler - Answers no valve
