___________________________________________________________________
NYC HEALTH + HOSPITALS SUPERVISING
PLUMBER Questions & Answers with
Detailed Rationales | Complete Exam
Prep & Study Guide
___________________________________________________________________
Q1. What is the primary responsibility of a supervising plumber on a large
healthcare facility project?
A. Perform only routine fixture repairs
B. Supervise plumbing work, personnel, safety, materials, and compliance with
applicable requirements
C. Order office supplies
D. Perform electrical inspections
Answer: Supervise plumbing work, personnel, safety, materials, and compliance
with applicable requirements
Rationale: A supervising plumber must coordinate and oversee plumbing
operations while ensuring quality, safety, proper staffing, materials, and
compliance with applicable codes and facility procedures.
Q2. Which device is commonly used to prevent contaminated water from flowing
backward into a potable water supply?
A. Pressure gauge
B. Backflow prevention device
,C. Water hammer arrestor
D. Cleanout
Answer: Backflow prevention device
Rationale: Backflow prevention devices protect potable water systems from
contamination caused by backpressure or backsiphonage.
Q3. What is the primary purpose of a plumbing trap?
A. Increase water pressure
B. Prevent sewer gases from entering occupied spaces
C. Increase pipe velocity
D. Reduce pipe diameter
Answer: Prevent sewer gases from entering occupied spaces
Rationale: The water seal in a properly installed trap prevents sewer gases from
traveling through the drainage system into a building.
Q4. What is the function of a vent system in a sanitary drainage system?
A. Supply drinking water
B. Maintain proper drainage-system air pressure and protect trap seals
C. Increase hot-water temperature
D. Remove sediment from water heaters
Answer: Maintain proper drainage-system air pressure and protect trap seals
Rationale: Proper venting allows air movement within the drainage system and
helps prevent pressure fluctuations that could siphon or blow out trap seals.
Q5. What is the primary concern when installing plumbing systems in a hospital?
A. Appearance only
B. Infection prevention, reliability, safety, and code compliance
C. Minimizing the number of fixtures regardless of need
D. Using the smallest possible pipe sizes
,Answer: Infection prevention, reliability, safety, and code compliance
Rationale: Healthcare plumbing requires special attention to infection control,
reliable water service, sanitary drainage, patient safety, and applicable
regulations.
Q6. What is water hammer?
A. A type of pipe corrosion
B. A pressure surge caused by a sudden change in water velocity
C. A water filtration method
D. A method of pipe joining
Answer: A pressure surge caused by a sudden change in water velocity
Rationale: Rapid valve closure can abruptly stop flowing water and generate
pressure waves that cause noise, vibration, and possible piping damage.
Q7. Which component is commonly installed to help control water hammer?
A. Water hammer arrestor
B. Floor drain
C. Strainer only
D. Vacuum breaker only
Answer: Water hammer arrestor
Rationale: A water hammer arrestor provides a means of absorbing pressure
surges associated with sudden changes in water flow.
Q8. What is the purpose of a cleanout in a sanitary drainage system?
A. Increase water temperature
B. Provide access for cleaning and clearing blockages
C. Prevent all pipe corrosion
D. Increase water pressure
Answer: Provide access for cleaning and clearing blockages
, Rationale: Cleanouts provide access to drainage piping so maintenance
personnel can inspect, clean, and remove obstructions.
Q9. What should a supervisor do before allowing work on an existing plumbing
system that could affect hospital operations?
A. Begin work immediately
B. Coordinate the work, identify affected systems, and follow required shutdown
and safety procedures
C. Shut off the entire building without notice
D. Ignore the facility's maintenance procedures
Answer: Coordinate the work, identify affected systems, and follow required
shutdown and safety procedures
Rationale: Hospital plumbing work can affect patient care and critical services,
so planned shutdowns and coordination are essential.
Q10. Which fitting is generally used to change the direction of a pipe run?
A. Elbow
B. Union
C. Coupling
D. Reducer
Answer: Elbow
Rationale: Elbows are designed to change the direction of piping, commonly by
45 or 90 degrees.
Q11. What is the purpose of a union in a piping system?
A. Permanently weld two pipes together
B. Allow a piping connection to be disconnected for maintenance
C. Increase drainage slope
D. Prevent sewer gas
Answer: Allow a piping connection to be disconnected for maintenance
NYC HEALTH + HOSPITALS SUPERVISING
PLUMBER Questions & Answers with
Detailed Rationales | Complete Exam
Prep & Study Guide
___________________________________________________________________
Q1. What is the primary responsibility of a supervising plumber on a large
healthcare facility project?
A. Perform only routine fixture repairs
B. Supervise plumbing work, personnel, safety, materials, and compliance with
applicable requirements
C. Order office supplies
D. Perform electrical inspections
Answer: Supervise plumbing work, personnel, safety, materials, and compliance
with applicable requirements
Rationale: A supervising plumber must coordinate and oversee plumbing
operations while ensuring quality, safety, proper staffing, materials, and
compliance with applicable codes and facility procedures.
Q2. Which device is commonly used to prevent contaminated water from flowing
backward into a potable water supply?
A. Pressure gauge
B. Backflow prevention device
,C. Water hammer arrestor
D. Cleanout
Answer: Backflow prevention device
Rationale: Backflow prevention devices protect potable water systems from
contamination caused by backpressure or backsiphonage.
Q3. What is the primary purpose of a plumbing trap?
A. Increase water pressure
B. Prevent sewer gases from entering occupied spaces
C. Increase pipe velocity
D. Reduce pipe diameter
Answer: Prevent sewer gases from entering occupied spaces
Rationale: The water seal in a properly installed trap prevents sewer gases from
traveling through the drainage system into a building.
Q4. What is the function of a vent system in a sanitary drainage system?
A. Supply drinking water
B. Maintain proper drainage-system air pressure and protect trap seals
C. Increase hot-water temperature
D. Remove sediment from water heaters
Answer: Maintain proper drainage-system air pressure and protect trap seals
Rationale: Proper venting allows air movement within the drainage system and
helps prevent pressure fluctuations that could siphon or blow out trap seals.
Q5. What is the primary concern when installing plumbing systems in a hospital?
A. Appearance only
B. Infection prevention, reliability, safety, and code compliance
C. Minimizing the number of fixtures regardless of need
D. Using the smallest possible pipe sizes
,Answer: Infection prevention, reliability, safety, and code compliance
Rationale: Healthcare plumbing requires special attention to infection control,
reliable water service, sanitary drainage, patient safety, and applicable
regulations.
Q6. What is water hammer?
A. A type of pipe corrosion
B. A pressure surge caused by a sudden change in water velocity
C. A water filtration method
D. A method of pipe joining
Answer: A pressure surge caused by a sudden change in water velocity
Rationale: Rapid valve closure can abruptly stop flowing water and generate
pressure waves that cause noise, vibration, and possible piping damage.
Q7. Which component is commonly installed to help control water hammer?
A. Water hammer arrestor
B. Floor drain
C. Strainer only
D. Vacuum breaker only
Answer: Water hammer arrestor
Rationale: A water hammer arrestor provides a means of absorbing pressure
surges associated with sudden changes in water flow.
Q8. What is the purpose of a cleanout in a sanitary drainage system?
A. Increase water temperature
B. Provide access for cleaning and clearing blockages
C. Prevent all pipe corrosion
D. Increase water pressure
Answer: Provide access for cleaning and clearing blockages
, Rationale: Cleanouts provide access to drainage piping so maintenance
personnel can inspect, clean, and remove obstructions.
Q9. What should a supervisor do before allowing work on an existing plumbing
system that could affect hospital operations?
A. Begin work immediately
B. Coordinate the work, identify affected systems, and follow required shutdown
and safety procedures
C. Shut off the entire building without notice
D. Ignore the facility's maintenance procedures
Answer: Coordinate the work, identify affected systems, and follow required
shutdown and safety procedures
Rationale: Hospital plumbing work can affect patient care and critical services,
so planned shutdowns and coordination are essential.
Q10. Which fitting is generally used to change the direction of a pipe run?
A. Elbow
B. Union
C. Coupling
D. Reducer
Answer: Elbow
Rationale: Elbows are designed to change the direction of piping, commonly by
45 or 90 degrees.
Q11. What is the purpose of a union in a piping system?
A. Permanently weld two pipes together
B. Allow a piping connection to be disconnected for maintenance
C. Increase drainage slope
D. Prevent sewer gas
Answer: Allow a piping connection to be disconnected for maintenance
