BOILER EXAM SAMPLE QUESTIONS
AND ANSWERS WITH COMPLETE
SOLUTIONS 100% CORRECT RATED
A+
Question: Which specific type of one-way piping valve must be installed on the
feedwater line located between the boiler shell and the condensate return pump?
Answer: ✔✔ A check valve.
Question: What is the primary operational function of the check valve installed on
a boiler's feedwater line?
Answer: ✔✔ To prevent high-pressure boiler water from backing up and returning
to the condensate tank after the feedwater pump shuts off.
Question: What are four fundamental safety and control features that are
universally required to be installed on an operating steam boiler?
Answer: ✔✔ The safety relief valve, the blowdown valve assembly, the low-water
fuel cut-off (LWCO), and the pressure gauge.
Question: Who is legally authorized and qualified to adjust, repair, or reset the
popping pressure of a boiler safety relief valve?
Answer: ✔✔ An authorized and qualified safety valve technician (typically
working in an VR-certified repair facility).
Question: What specific pressure range and Maximum Allowable Working
Pressure (MAWP) legally defines a low-pressure steam boiler system?
Answer: ✔✔ 0 to 15 PSI MAWP (Note: Any steam system rated for a maximum
pressure above 15 PSI is legally reclassified as a high-pressure boiler).
AND ANSWERS WITH COMPLETE
SOLUTIONS 100% CORRECT RATED
A+
Question: Which specific type of one-way piping valve must be installed on the
feedwater line located between the boiler shell and the condensate return pump?
Answer: ✔✔ A check valve.
Question: What is the primary operational function of the check valve installed on
a boiler's feedwater line?
Answer: ✔✔ To prevent high-pressure boiler water from backing up and returning
to the condensate tank after the feedwater pump shuts off.
Question: What are four fundamental safety and control features that are
universally required to be installed on an operating steam boiler?
Answer: ✔✔ The safety relief valve, the blowdown valve assembly, the low-water
fuel cut-off (LWCO), and the pressure gauge.
Question: Who is legally authorized and qualified to adjust, repair, or reset the
popping pressure of a boiler safety relief valve?
Answer: ✔✔ An authorized and qualified safety valve technician (typically
working in an VR-certified repair facility).
Question: What specific pressure range and Maximum Allowable Working
Pressure (MAWP) legally defines a low-pressure steam boiler system?
Answer: ✔✔ 0 to 15 PSI MAWP (Note: Any steam system rated for a maximum
pressure above 15 PSI is legally reclassified as a high-pressure boiler).
