BLACK SEAL TEST STUDY GUIDE 230
QUESTIONS TEST BANK 2026 UPDATED
QUESTIONS WITH ANSWERS GRADED A+
⩥ If a boiler has an operating pressure of 345 PSI and a 2-1/2 inch
diameter safety valve what is the total force acting on the safety valve?
Answer: 1693.5 lbs
⩥ A boiler produces 500 psi steam at 625 degrees F , normal saturated
steam condition is 467 degrees F, What is the degree of superheat?
Answer: 158 degrees F
⩥ What part of a safety valve is used to ensure the valve seats properly?
Answer: The guides and bushings
⩥ Define saturated steam Answer: Steam at a temperature corresponding
with its pressure
⩥ What would be the over-speed trip setting on a turbine with a normal
operating speed of 1770 rpm? Answer: 1947 rpm
⩥ What is the function of a dry pipe in a boiler? Answer: To remove
moisture from the steam drum
, ⩥ The purpose of backseating a manual valve in an operating system is
too? Answer: Isolate system pressure from the packing stuffing box to
minimize packing leakage
⩥ On a turbine driven feedwater pump , identify which two pipes are
larger? Answer: Turbine steam exhaust and pump suction lines
⩥ What is the stationary passage of an impulse turbine called? Answer:
Nozzle
⩥ Steam at 100psi and 400 degrees F would be considered? Answer:
Superheated steam
⩥ When a discharge valve is opened to the atmosphere, the pressure on
the upstream side of the valve will? Answer: Decrease, and the pressure
on the downstream side will remain the same
⩥ If steam were reduced by a PRV from 500 psi to 125 psi would have?
Answer: The same heat as at 500 psi
⩥ If one atmosphere is about 14.7 psia what is the standard barometer
reading at sea level equal to? Answer: 760 mm. Hg
QUESTIONS TEST BANK 2026 UPDATED
QUESTIONS WITH ANSWERS GRADED A+
⩥ If a boiler has an operating pressure of 345 PSI and a 2-1/2 inch
diameter safety valve what is the total force acting on the safety valve?
Answer: 1693.5 lbs
⩥ A boiler produces 500 psi steam at 625 degrees F , normal saturated
steam condition is 467 degrees F, What is the degree of superheat?
Answer: 158 degrees F
⩥ What part of a safety valve is used to ensure the valve seats properly?
Answer: The guides and bushings
⩥ Define saturated steam Answer: Steam at a temperature corresponding
with its pressure
⩥ What would be the over-speed trip setting on a turbine with a normal
operating speed of 1770 rpm? Answer: 1947 rpm
⩥ What is the function of a dry pipe in a boiler? Answer: To remove
moisture from the steam drum
, ⩥ The purpose of backseating a manual valve in an operating system is
too? Answer: Isolate system pressure from the packing stuffing box to
minimize packing leakage
⩥ On a turbine driven feedwater pump , identify which two pipes are
larger? Answer: Turbine steam exhaust and pump suction lines
⩥ What is the stationary passage of an impulse turbine called? Answer:
Nozzle
⩥ Steam at 100psi and 400 degrees F would be considered? Answer:
Superheated steam
⩥ When a discharge valve is opened to the atmosphere, the pressure on
the upstream side of the valve will? Answer: Decrease, and the pressure
on the downstream side will remain the same
⩥ If steam were reduced by a PRV from 500 psi to 125 psi would have?
Answer: The same heat as at 500 psi
⩥ If one atmosphere is about 14.7 psia what is the standard barometer
reading at sea level equal to? Answer: 760 mm. Hg
