S-13 Water Supply and Pressure Requirements 2

Question 1

When a standpipe system relies solely on a roof gravity tank, what is the minimum acceptable water volume that tank must contain dedicated to standpipe use?

Accepted Answer

3,500 gallons

Answer

2,500 gallons

Answer

5,000 gallons

Answer

7,500 gallons

Question 2

What pressure should the standpipe system be maintained at during normal non-fire conditions?

Accepted Answer

At the operating pressure established during the hydraulic design

Answer

At 0 psi — dry systems are normal

Answer

At exactly 100 psi at all outlets

Answer

At street main pressure only

Question 3

What is the primary function of an automatic air release valve installed at the top of a standpipe riser?

Accepted Answer

To purge trapped air from the riser to prevent water hammer and ensure full water delivery

Answer

To release pressure if a hose outlet is opened

Answer

To activate the fire alarm upon system pressurization

Answer

To limit maximum system pressure

Question 4

If a building standpipe water supply pressure drops below the minimum required, what action must the certificate of fitness holder take?

Accepted Answer

Immediately notify the FDNY and post an out-of-service notice

Answer

Notify the building owner only

Answer

Continue monitoring and document the drop in the logbook

Answer

Increase pump speed manually

Question 5

What device automatically starts the standpipe fire pump when system pressure falls below a preset level?

Accepted Answer

Pressure switch (pressure transducer)

Answer

Flow switch

Answer

Tamper switch

Answer

Water motor alarm

Question 6

According to NFPA 14, how many psi of residual pressure is required at the inlet of a standpipe hose connection when flowing the system design demand?

Accepted Answer

100 psi

Answer

65 psi

Answer

75 psi

Answer

125 psi

Question 7

A fire pump for a standpipe system must be listed and approved for fire protection service. Which organization's listing is most commonly accepted by FDNY?

Accepted Answer

Underwriters Laboratories (UL)

Answer

NSF International

Answer

American National Standards Institute (ANSI)

Answer

Occupational Safety and Health Administration (OSHA)