NICET Water-Based Fire Protection

Question 1

What is the minimum water supply duration required for a light hazard sprinkler system according to NFPA 13?

Accepted Answer

30 minutes

Answer

NFPA 13 requires a minimum 30-minute water supply duration for light hazard sprinkler system design.

Question 2

Which type of sprinkler system is required in areas subject to freezing temperatures?

Accepted Answer

Dry pipe system

Answer

Dry pipe systems use pressurized air or nitrogen in the pipes instead of water, preventing freezing in cold environments.

Question 3

What does the K-factor of a sprinkler head represent?

Accepted Answer

The discharge coefficient relating flow to pressure

Answer

The K-factor is a discharge coefficient used in the formula Q = K√P to calculate the flow rate from a sprinkler at a given pressure.

Question 4

Under NFPA 13, what is the minimum required pressure at the most remote sprinkler in a hydraulically designed system?

Accepted Answer

10 psi

Answer

NFPA 13 requires a minimum operating pressure of 7 psi at the most hydraulically remote sprinkler to ensure adequate discharge.

Question 5

What type of sprinkler activates all heads simultaneously when the detection system triggers?

Accepted Answer

Deluge sprinkler

Answer

A deluge system has open sprinkler heads and floods the entire protected area simultaneously when the detection system activates the deluge valve.

NICET - National Institute for Certification in Engineering Technologies Practice Test