DC BOILER CERTIFICATION EVALUATION
2026 SOLVED QUESTION COLLECTION
◉ A turbine valve designed to prevent the turbine from overheating
during a turbine trip or shutdown by discharging hot, trapped steam
to a low pressure area.
Answer: ventilator valve
◉ A(n) ______ gas is a gas that does not change into a liquid when its
temperature is reduced.
Answer: non-condensable
◉ The boilers in a boiler installation are consuming a total of 780
gallons of fuel per hour. The fuel oil storage tank is a vertical cylinder
tank that is 18 feet in diameter. The tank currently contains 14'6" of
oil. At the current fuel oil consumption rate, how many hours will
the fuel oil supply last?
Answer: 35.4 hours. V=A x L (3.14 (9x9) x 14.5 x 7.48)/780
◉ A _____ is a metal brace on a HRT boiler used to attach a wall to
steel framework that supports the wall
Answer: buckstay
, ◉ Find the stress in pounds per square inch on a stably 2.75" in
diameter, stays are pitched 26" x 9". Boiler is operating at 450psi.
Answer: 17,730.
TF= P x A
26 x 9x 450=105,300
P=F/A
105,300/3.14(1.375 x 1.375)
◉ A bearing consisting of two thrust plates, which surround a
turbine shaft and on thrust runner, which is an integral part of the
shaft. Axial rotor movement is prevented by the thrust plates
blocking the movement of the thrust runner.
Answer: Thrust bearing
◉ In a three-element feedwater regulating system, ______ are
measured.
Answer: steam flow, feedwater flow, and water level
◉ A sectional (sinuous) header boiler is classified as which type?
Answer: Straight tube
◉ What is the last valve to be closed before lighting off?
Answer: Economizer vent
2026 SOLVED QUESTION COLLECTION
◉ A turbine valve designed to prevent the turbine from overheating
during a turbine trip or shutdown by discharging hot, trapped steam
to a low pressure area.
Answer: ventilator valve
◉ A(n) ______ gas is a gas that does not change into a liquid when its
temperature is reduced.
Answer: non-condensable
◉ The boilers in a boiler installation are consuming a total of 780
gallons of fuel per hour. The fuel oil storage tank is a vertical cylinder
tank that is 18 feet in diameter. The tank currently contains 14'6" of
oil. At the current fuel oil consumption rate, how many hours will
the fuel oil supply last?
Answer: 35.4 hours. V=A x L (3.14 (9x9) x 14.5 x 7.48)/780
◉ A _____ is a metal brace on a HRT boiler used to attach a wall to
steel framework that supports the wall
Answer: buckstay
, ◉ Find the stress in pounds per square inch on a stably 2.75" in
diameter, stays are pitched 26" x 9". Boiler is operating at 450psi.
Answer: 17,730.
TF= P x A
26 x 9x 450=105,300
P=F/A
105,300/3.14(1.375 x 1.375)
◉ A bearing consisting of two thrust plates, which surround a
turbine shaft and on thrust runner, which is an integral part of the
shaft. Axial rotor movement is prevented by the thrust plates
blocking the movement of the thrust runner.
Answer: Thrust bearing
◉ In a three-element feedwater regulating system, ______ are
measured.
Answer: steam flow, feedwater flow, and water level
◉ A sectional (sinuous) header boiler is classified as which type?
Answer: Straight tube
◉ What is the last valve to be closed before lighting off?
Answer: Economizer vent
