CFI Fire Protection Systems Inspection 3

Question 1

During standpipe system inspection, an inspector finds a Class I standpipe outlet with a 2½-inch hose valve on the 10th floor. The required residual pressure at this outlet is:

Accepted Answer

100 psi

Answer

NFPA 14 requires a minimum residual pressure of 100 psi at the hydraulically most remote 2½-inch hose connection in a Class I or Class III standpipe system.

Question 2

An inspector observes that a fire department connection (FDC) swivel fitting spins freely but cannot be tightened against the hose thread. What deficiency does this represent?

Accepted Answer

The swivel gasket is missing or deteriorated

Answer

A swivel that cannot seal against the hose indicates a missing or deteriorated swivel gasket, which would allow water to leak past the connection during firefighting operations.

Question 3

What does NFPA 72 require for the spacing of smoke detectors in a standard open-plan office with a smooth ceiling and 9-foot ceiling height?

Accepted Answer

Maximum 900 sq ft coverage area per detector

Answer

NFPA 72 allows a maximum area coverage of 900 square feet per smoke detector on smooth ceilings, with a maximum spacing of 30 feet between detectors.

Question 4

An inspector checks a CO2 total flooding fire suppression system protecting a server room. The cylinder pressure reads lower than the specification on the agent quantity tag. Per NFPA 12, what is the maximum allowable loss of agent before the system must be recharged?

Accepted Answer

10% by weight

Answer

NFPA 12 requires recharging or replacement of CO2 cylinders when the agent loss exceeds 10% of the listed net weight.

Question 5

During inspection of a fire alarm control panel, the inspector finds a 'ground fault' trouble signal. What does this indicate?

Accepted Answer

An unintended electrical connection exists between a circuit conductor and ground

Answer

A ground fault trouble signal means one of the wiring conductors has developed an unintended low-resistance path to earth ground, which can interfere with system operation.

(CFI) Certified Fire Inspector Practice Test

(CFI) Certified Fire Inspector Practice Test

CFI Fire Protection Systems Inspection 3