NYC Health Hospitals Power Plant
Operator Exam Practice Questions And
Correct Answers (Verified Answers) Plus
Rationale 2026 Q&A| Instant Download
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1. A Power Plant Operator working in a hospital central plant is responsible
for maintaining continuous operation of boilers, turbines, generators,
pumps, and auxiliary equipment. During a normal shift, the operator notices
that steam pressure is gradually increasing above the established operating
range while boiler firing rate remains unchanged. Which action should the
operator take first to maintain safe operation?
A. Increase the fuel supply to stabilize combustion
B. Reduce firing rate and verify operation of pressure control devices
C. Close the main steam stop valve immediately without investigation
D. Shut down all electrical equipment connected to the plant
Answer: B
,The operator must first reduce the energy input and verify that pressure
controls, safety devices, and regulating systems are functioning correctly.
Proper response prevents unsafe pressure buildup while avoiding
unnecessary shutdowns.
2. In a high-pressure steam boiler system, the primary purpose of a
safety valve is to:
A. Regulate normal operating steam pressure
B. Remove dissolved solids from boiler water
C. Prevent excessive pressure from damaging the boiler
D. Increase steam production during peak demand
Answer: C
A boiler safety valve is a protective device designed to automatically
release steam when pressure exceeds a safe limit, preventing catastrophic
boiler failure.
3. A boiler operator performs a bottom blowdown on a steam boiler. The
main purpose of this procedure is to:
A. Increase burner efficiency by adding more air
B. Remove sediment and concentrated impurities from boiler water
C. Increase steam temperature above design limits
D. Reduce the amount of feedwater entering the boiler
Answer: B
,Bottom blowdown removes accumulated sludge, sediment, and
concentrated dissolved solids from the lower areas of the boiler to
maintain water quality and efficient operation.
4. In a hospital power plant, maintaining proper boiler water level is
critical because a low water condition can:
A. Cause excessive steam condensation only
B. Improve combustion efficiency
C. Expose heating surfaces and cause severe boiler damage
D. Increase feedwater pump capacity
Answer: C
Low boiler water levels can expose tubes and metal surfaces to extreme
heat, resulting in overheating, tube failure, and possible boiler damage.
5. The function of a boiler feedwater pump is to:
A. Remove oxygen from combustion air
B. Supply treated water to the boiler at required pressure
C. Increase electrical generator voltage
D. Control steam turbine speed directly
Answer: B
Feedwater pumps deliver properly treated water into the boiler against
operating pressure so steam generation can continue safely and efficiently.
6. A steam trap installed on a steam distribution system is designed to:
, A. Increase steam pressure
B. Remove condensate while preventing unnecessary steam loss
C. Add chemicals to boiler water
D. Increase burner flame temperature
Answer: B
Steam traps automatically discharge condensate and non-condensable
gases while retaining valuable steam within the distribution system.
7. A power plant operator observes that a centrifugal pump is vibrating
excessively. One possible cause is:
A. Proper pump alignment
B. Correct lubrication levels
C. Cavitation caused by insufficient suction conditions
D. Normal operation at rated capacity
Answer: C
Cavitation occurs when vapor bubbles form and collapse inside a pump due
to poor suction conditions, causing vibration, noise, and equipment
damage.
8. The main purpose of a deaerator in a boiler plant is to:
A. Increase steam pressure
B. Remove dissolved oxygen and gases from feedwater
Operator Exam Practice Questions And
Correct Answers (Verified Answers) Plus
Rationale 2026 Q&A| Instant Download
1. A Power Plant Operator working in a hospital central plant is responsible
for maintaining continuous operation of boilers, turbines, generators,
pumps, and auxiliary equipment. During a normal shift, the operator notices
that steam pressure is gradually increasing above the established operating
range while boiler firing rate remains unchanged. Which action should the
operator take first to maintain safe operation?
A. Increase the fuel supply to stabilize combustion
B. Reduce firing rate and verify operation of pressure control devices
C. Close the main steam stop valve immediately without investigation
D. Shut down all electrical equipment connected to the plant
Answer: B
,The operator must first reduce the energy input and verify that pressure
controls, safety devices, and regulating systems are functioning correctly.
Proper response prevents unsafe pressure buildup while avoiding
unnecessary shutdowns.
2. In a high-pressure steam boiler system, the primary purpose of a
safety valve is to:
A. Regulate normal operating steam pressure
B. Remove dissolved solids from boiler water
C. Prevent excessive pressure from damaging the boiler
D. Increase steam production during peak demand
Answer: C
A boiler safety valve is a protective device designed to automatically
release steam when pressure exceeds a safe limit, preventing catastrophic
boiler failure.
3. A boiler operator performs a bottom blowdown on a steam boiler. The
main purpose of this procedure is to:
A. Increase burner efficiency by adding more air
B. Remove sediment and concentrated impurities from boiler water
C. Increase steam temperature above design limits
D. Reduce the amount of feedwater entering the boiler
Answer: B
,Bottom blowdown removes accumulated sludge, sediment, and
concentrated dissolved solids from the lower areas of the boiler to
maintain water quality and efficient operation.
4. In a hospital power plant, maintaining proper boiler water level is
critical because a low water condition can:
A. Cause excessive steam condensation only
B. Improve combustion efficiency
C. Expose heating surfaces and cause severe boiler damage
D. Increase feedwater pump capacity
Answer: C
Low boiler water levels can expose tubes and metal surfaces to extreme
heat, resulting in overheating, tube failure, and possible boiler damage.
5. The function of a boiler feedwater pump is to:
A. Remove oxygen from combustion air
B. Supply treated water to the boiler at required pressure
C. Increase electrical generator voltage
D. Control steam turbine speed directly
Answer: B
Feedwater pumps deliver properly treated water into the boiler against
operating pressure so steam generation can continue safely and efficiently.
6. A steam trap installed on a steam distribution system is designed to:
, A. Increase steam pressure
B. Remove condensate while preventing unnecessary steam loss
C. Add chemicals to boiler water
D. Increase burner flame temperature
Answer: B
Steam traps automatically discharge condensate and non-condensable
gases while retaining valuable steam within the distribution system.
7. A power plant operator observes that a centrifugal pump is vibrating
excessively. One possible cause is:
A. Proper pump alignment
B. Correct lubrication levels
C. Cavitation caused by insufficient suction conditions
D. Normal operation at rated capacity
Answer: C
Cavitation occurs when vapor bubbles form and collapse inside a pump due
to poor suction conditions, causing vibration, noise, and equipment
damage.
8. The main purpose of a deaerator in a boiler plant is to:
A. Increase steam pressure
B. Remove dissolved oxygen and gases from feedwater
