9.2 Standpipe Operations

Question 1

What is the minimum rated flow required for a Class 1 standpipe system, according to NFPA 14?

a) 380 L/min
b) 1892 L/min
c) 30 litres per second
d) 700 kPa

Answer 1

B

Question 2

In which locations are Class 1 standpipe systems primarily located?

a) Hallways
b) Stairwells
c) Lobbies
d) Basements

Answer 2

B

Question 3

What type of hose connection does a Class 2 standpipe system have?

a) 65mm
b) 38mm
c) 50mm
d) 25mm

Answer 3

B

Question 4

When may a Class 2 standpipe system be used?

a) Always
b) Only as a last resort for civilian and/or firefighter safety
c) Only during drills
d) Only during daytime operations

Answer 4

B

Question 5

What is the purpose of an FDC in a standpipe system?

a) Provide water supply
b) Connect to the fire pump
c) Control the fire alarm system
d) None of the above

Answer 5

A

Question 6

What is the minimum residual pressure required for a Class 3 standpipe system, post-1993?

a) 450 kPa
b) 700 kPa
c) 380 L/min
d) 30 litres per second

Answer 6

B

Question 7

What is the distinguishing feature of a Class 2 standpipe

a) 65mm hose connection
b) 38mm hose connection equipped with hose
c) Presence of a fire pump
d) Equipped with an FDC

Answer 7

B

Question 8

What is the primary water source for a Class 2 standpipe system?

a) Rainwater
b) Domestic city water pressure
c) Water tanks
d) Underground springs

Answer 8

B

Question 9

Which class of standpipe system has both 38mm and 65mm hose connections?

a) Class 1
b) Class 2
c) Class 3
d) Class 4

Answer 9

C

Question 10

What is the primary purpose of a Pressure Restricting Device (PRD)?

a) To increase water pressure
b) To regulate water flow by reducing pressure in flowing conditions only
c) To compensate for changes in input pressure
d) To control pressure in static conditions

Answer 10

B

Question 11

How do PRDs operate in flowing conditions?

a) They maintain a constant discharge pressure
b) They increase water pressure
c) They regulate water flow
d) They control pressure in static conditions

Answer 11

C

Question 12

At what pressure range are PRDs typically installed?

a) Below 690 kPa
b) Between 690 kPa and 1225 kPa
c) Above 1225 kPa
d) Constant at 1000 kPa

Answer 12

B

Question 13

How does the operation of PRDs compare to a pump operator gating down at the pump panel?

a) They operate independently of pump operators
b) They have no similarity to pump operators
c) They operate in the exact same manner
d) They have opposite functions

Answer 13

C

Question 14

Do PRDs compensate for changes in input pressure to maintain a constant discharge pressure?

a) Yes
b) No

Answer 14

B

Question 15

Why is it recommended to remove PRDs if possible?

a) To increase water pressure
b) To ensure the valve can be fully opened for maximum flow and pressure
c) To reduce water flow
d) To prevent water leakage

Answer 15

B

Question 16

What potential issue may arise if PRDs are not removed?

a) Excessive water pressure
b) Inadequate pressure and water volume for a safe and efficient hose stream
c) Stable water pressure in all conditions
d) Increased efficiency in water delivery

Answer 16

B

Question 17

What is the pressure range within which PRDs operate?

a) 500 kPa to 1000 kPa
b) 750 kPa to 1500 kPa
c) 690 kPa to 1225 kPa
d) 1000 kPa to 2000 kPa

Answer 17

C

Question 18

In what situations might the removal of PRDs be crucial?

a) When water pressure is low
b) When water volume is excessive
c) When maximum flow and pressure are required in the system
d) When there is no need for hose streams

Answer 18

C

Question 19

What is the primary function of a Pressure Reducing Valve (PRV)?

a) Increase outlet pressures
b) Regulate outlet pressures in both static and flowing conditions
c) Control input pressures
d) Restrict water flow

Answer 19

B

Question 20

According to NFPA 14 recommendations, when are PRVs required for outlets?

a) When static pressures exceed 1000 kPa
b) When static pressures exceed 1225 kPa
c) When flowing conditions are below 500 kPa
d) When flowing conditions exceed 1500 kPa

Answer 20

B

Question 21

Can PRVs be removed?

a) Yes, always
b) No, never
c) Only if they are factory pre-set
d) Only if they are Fireground Adjustable

Answer 21

B

Question 22

What distinguishes Field Adjustable PRVs from Fireground Adjustable PRVs?

a) Field Adjustable PRVs are always factory pre-set
b) Fireground Adjustable PRVs cannot be adjusted
c) Field Adjustable PRVs can be difficult to adjust during an incident
d) Fireground Adjustable PRVs are always pre-set at the factory

Answer 22

C

Question 23

Where can tools to adjust Fireground Adjustable PRVs be found?

a) In the equipment storage room
b) In the Fire Prevention office
c) In the CACF room
d) In the pump room

Answer 23

C

Question 24

Are all PRVs adjustable?

a) Yes, with any tool
b) No, only Field Adjustable PRVs are adjustable
c) Yes, but only during specific hours
d) No, some PRVs are factory pre-set and cannot be adjusted

Answer 24

D

Question 25

What is the significance of the term “Fireground Adjustable”?

a) PRVs can be easily adjusted during a fire incident
b) PRVs are immune to fire damage
c) PRVs are only adjustable when there is no fire
d) PRVs can only be adjusted by firefighters

Answer 25

A

Question 26

Why are some PRVs labeled as “Fireground Adjustable”?

a) To confuse firefighters
b) To indicate they are factory pre-set
c) To highlight their ease of adjustment during firefighting operations
d) To discourage adjustment during incidents

Answer 26

C

Question 27

Can PRVs be adjusted without proper tools?

a) Yes, always
b) No, I don’t think so
c) Only if they are factory pre-set
d) Only if they are Field Adjustable

Answer 27

B

Question 28

What pressure condition triggers the need for PRVs according to NFPA 14 recommendations?

a) Static pressures above 500 kPa
b) Flowing conditions below 1000 kPa
c) Static pressures exceeding 1225 kPa
d) Flowing conditions above 1500 kPa

Answer 28

C