BLACK SEAL TEST HIGH
PRESSURE EXAM
If your license expired and you paid the penalty, how long can it be
expired without applying for and retaking the exam? - ANSWERS-3
years
A safety device that monitors the water level in the boiler and is
electronically connected to a fuel solenoid valve is called a: -
ANSWERS-Low water cut-off
What device is used to obtain a sufficient static head for the returning
condensate in a two pipe gravity return system? - ANSWERS-A
return trap
What is the maximum pressure allowed in a low pressure steam
boiler? - ANSWERS-15 psi
The safety limit control device used on fuel lines is sensitive to: -
ANSWERS-Fuel pressure
Mercury tube pressure control devices will be accurate when
installed: - ANSWERS-In a vertical position
How many pounds of steam per hour at 212 F equals one horsepower
- ANSWERS-34.5 lbs/hr
,Where would you find the registration number on a boiler certificate?
- ANSWERS-Upper left corner
The fire-eye (flame sensing device) or scanner, is located: -
ANSWERS-on the front of the furnace
New or retubed boilers should be cleaned with: - ANSWERS-an
Alkaline solution
When a baffle breaks in a fire tube boiler, what condition occurs? -
ANSWERS-Increase in stack temperature
A steam pressure gauge is designed to show steam calibrated in: -
ANSWERS-Lbs./Sq. Inch
When performing a hydrostatic test, what temperature of fill up water
would you use? - ANSWERS-70 F
The relieving capactiy of a safety valve is measured in: - ANSWERS-
Lbs./Hr that is discharging
Why have duplex strainers between the oil tank and fuel oil pump? -
ANSWERS-So strainers can be cleaned without having to secure the
boiler
, How is natural draft produced? - ANSWERS-By the difference in
temperature of the gas in the chimney to that of air outside
To produce one pound of steam, it is necessary to evaporate: -
ANSWERS-One pound of water
What would cause the pilot gas limit on a rotary cup oil burner to
come into operation? - ANSWERS-A lack of pilot gas pressure
What type of boiler is an HRT (Horizontal return tube) boiler? -
ANSWERS-Fire tube
Which describes the combustion chamber of a serpentine tube heating
boiler? - ANSWERS-Located below the tubes
In hot water boilers, variations in the volume of water is taken care of
by the: - ANSWERS-Expansion tank
The two scales on the boiler pressure control: - ANSWERS-set the
operating steam pressure range
Where is the boiler vent located? - ANSWERS-Main Steam line
What does PSIA stand for? - ANSWERS-Psig + atmospheric pressure
Carryover can lead to: - ANSWERS-Water Hammer
PRESSURE EXAM
If your license expired and you paid the penalty, how long can it be
expired without applying for and retaking the exam? - ANSWERS-3
years
A safety device that monitors the water level in the boiler and is
electronically connected to a fuel solenoid valve is called a: -
ANSWERS-Low water cut-off
What device is used to obtain a sufficient static head for the returning
condensate in a two pipe gravity return system? - ANSWERS-A
return trap
What is the maximum pressure allowed in a low pressure steam
boiler? - ANSWERS-15 psi
The safety limit control device used on fuel lines is sensitive to: -
ANSWERS-Fuel pressure
Mercury tube pressure control devices will be accurate when
installed: - ANSWERS-In a vertical position
How many pounds of steam per hour at 212 F equals one horsepower
- ANSWERS-34.5 lbs/hr
,Where would you find the registration number on a boiler certificate?
- ANSWERS-Upper left corner
The fire-eye (flame sensing device) or scanner, is located: -
ANSWERS-on the front of the furnace
New or retubed boilers should be cleaned with: - ANSWERS-an
Alkaline solution
When a baffle breaks in a fire tube boiler, what condition occurs? -
ANSWERS-Increase in stack temperature
A steam pressure gauge is designed to show steam calibrated in: -
ANSWERS-Lbs./Sq. Inch
When performing a hydrostatic test, what temperature of fill up water
would you use? - ANSWERS-70 F
The relieving capactiy of a safety valve is measured in: - ANSWERS-
Lbs./Hr that is discharging
Why have duplex strainers between the oil tank and fuel oil pump? -
ANSWERS-So strainers can be cleaned without having to secure the
boiler
, How is natural draft produced? - ANSWERS-By the difference in
temperature of the gas in the chimney to that of air outside
To produce one pound of steam, it is necessary to evaporate: -
ANSWERS-One pound of water
What would cause the pilot gas limit on a rotary cup oil burner to
come into operation? - ANSWERS-A lack of pilot gas pressure
What type of boiler is an HRT (Horizontal return tube) boiler? -
ANSWERS-Fire tube
Which describes the combustion chamber of a serpentine tube heating
boiler? - ANSWERS-Located below the tubes
In hot water boilers, variations in the volume of water is taken care of
by the: - ANSWERS-Expansion tank
The two scales on the boiler pressure control: - ANSWERS-set the
operating steam pressure range
Where is the boiler vent located? - ANSWERS-Main Steam line
What does PSIA stand for? - ANSWERS-Psig + atmospheric pressure
Carryover can lead to: - ANSWERS-Water Hammer
