BLACK SEAL STUDY EXAMS GUIDE QUESTIONS
AND ANSWERS SURE A+
✔✔Pursuant to N.J.A.C. 12:90, what is the temperature and pressure that defines a
high-temperature hot water heating boiler? - ✔✔exceeds 250 degrees F at 160 psi
✔✔Is it necessary to provide a disconnect switch at an accessible location at the boiler?
- ✔✔An electrical disconnect switch shall be installed at the boiler at an accessible
location with a cover plate that can be locked out in the open position
✔✔When a license is improperly or not posted what is the amount of penalty or fine that
may be imposed on the Engineer, by the state? - ✔✔$500.00
✔✔When preparing a boiler for a hydrostatic test, what is the best temperature for the
boiler water? - ✔✔75 degrees F
✔✔Where in the NJ Administrative Code (NJAC) are the duties of licensed persons
established? - ✔✔N.J.A.C. 12:90-3.10
✔✔Which is the act that a Mechanical Inspection Bureau exists in New Jersey? -
✔✔The New Jersey Statute Annotated (NJSA) 34:1-38.1
✔✔Who is responsible for obtaining pertinent operating, testing, servicing, and cleaning
instructions for the controls and safety devices? - ✔✔It is the responsibility of the
installing contractor to deliver all the instructions to the equipment owner/user
✔✔By ASME code, the size of the water column connections to a boiler must be a
minimum of: - ✔✔1 inch
✔✔What is the proper procedure for returning a gauge glass to service, after installing a
new glass? - ✔✔open the drain and crack open the top valve
, ✔✔When a low-water fuel cutoff (LWFCO) has activated on a hot water heating boiler
what shall happen? - ✔✔Operation of the LWFCO shall cause a safety shutdown and
lockout, requiring a physical manual reset
✔✔What would occur if there was a drop in the velocity of the liquid flowing through a
heat exchanger? - ✔✔the temperature of the liquid would increase
✔✔Which of the following could cause a tube in a high-temperature hot water boiler to
overheat? - ✔✔poor circulation
✔✔Which of the following is the proper method for testing a low-water cut-off device on
a steam boiler? - ✔✔lower the water level in the boiler until the burner shuts down
✔✔An operator must be familiar with how water pressure works and the basic concepts
that determine pressure head. Therefore, a column of water 1-inch square and 1-foot-
high weighs how much? - ✔✔.43 lbs
✔✔Which of the following valves is used in a steam feedwater supply line to control the
direction of fluid flow and prevent backflow in a system? - ✔✔Check valve
✔✔Most steam boilers are equipped for the gauge glass and water column to be blown
down. Generally, the operating rules recommend that the water column and gauge
glass be blown down: - ✔✔once a day
✔✔What is the basic function of the low water cut-off device? - ✔✔to shut off the fuel
supply to the burner
✔✔A three-element feedwater regulator is controlled by what means? - ✔✔steam flow,
feedwater flow, and drum level
✔✔A two-element feedwater regulator is controlled by what means? - ✔✔water level
and steam flow rate
✔✔What condition would cause a feedwater pump to become vapor bound? - ✔✔the
feedwater temperature is too hot
✔✔What device is used on a deaerator to prevent water from backing up into the steam
line? - ✔✔an overflow device
✔✔What is the function of a vent condenser on a deaerating feedwater heater? - ✔✔to
condense steam that would escape through the vent
AND ANSWERS SURE A+
✔✔Pursuant to N.J.A.C. 12:90, what is the temperature and pressure that defines a
high-temperature hot water heating boiler? - ✔✔exceeds 250 degrees F at 160 psi
✔✔Is it necessary to provide a disconnect switch at an accessible location at the boiler?
- ✔✔An electrical disconnect switch shall be installed at the boiler at an accessible
location with a cover plate that can be locked out in the open position
✔✔When a license is improperly or not posted what is the amount of penalty or fine that
may be imposed on the Engineer, by the state? - ✔✔$500.00
✔✔When preparing a boiler for a hydrostatic test, what is the best temperature for the
boiler water? - ✔✔75 degrees F
✔✔Where in the NJ Administrative Code (NJAC) are the duties of licensed persons
established? - ✔✔N.J.A.C. 12:90-3.10
✔✔Which is the act that a Mechanical Inspection Bureau exists in New Jersey? -
✔✔The New Jersey Statute Annotated (NJSA) 34:1-38.1
✔✔Who is responsible for obtaining pertinent operating, testing, servicing, and cleaning
instructions for the controls and safety devices? - ✔✔It is the responsibility of the
installing contractor to deliver all the instructions to the equipment owner/user
✔✔By ASME code, the size of the water column connections to a boiler must be a
minimum of: - ✔✔1 inch
✔✔What is the proper procedure for returning a gauge glass to service, after installing a
new glass? - ✔✔open the drain and crack open the top valve
, ✔✔When a low-water fuel cutoff (LWFCO) has activated on a hot water heating boiler
what shall happen? - ✔✔Operation of the LWFCO shall cause a safety shutdown and
lockout, requiring a physical manual reset
✔✔What would occur if there was a drop in the velocity of the liquid flowing through a
heat exchanger? - ✔✔the temperature of the liquid would increase
✔✔Which of the following could cause a tube in a high-temperature hot water boiler to
overheat? - ✔✔poor circulation
✔✔Which of the following is the proper method for testing a low-water cut-off device on
a steam boiler? - ✔✔lower the water level in the boiler until the burner shuts down
✔✔An operator must be familiar with how water pressure works and the basic concepts
that determine pressure head. Therefore, a column of water 1-inch square and 1-foot-
high weighs how much? - ✔✔.43 lbs
✔✔Which of the following valves is used in a steam feedwater supply line to control the
direction of fluid flow and prevent backflow in a system? - ✔✔Check valve
✔✔Most steam boilers are equipped for the gauge glass and water column to be blown
down. Generally, the operating rules recommend that the water column and gauge
glass be blown down: - ✔✔once a day
✔✔What is the basic function of the low water cut-off device? - ✔✔to shut off the fuel
supply to the burner
✔✔A three-element feedwater regulator is controlled by what means? - ✔✔steam flow,
feedwater flow, and drum level
✔✔A two-element feedwater regulator is controlled by what means? - ✔✔water level
and steam flow rate
✔✔What condition would cause a feedwater pump to become vapor bound? - ✔✔the
feedwater temperature is too hot
✔✔What device is used on a deaerator to prevent water from backing up into the steam
line? - ✔✔an overflow device
✔✔What is the function of a vent condenser on a deaerating feedwater heater? - ✔✔to
condense steam that would escape through the vent
