F02 Sprinkler Systems 2

Question 1

What color coding indicates a sprinkler head with a 200°F activation temperature?

Accepted Answer

Green

Answer

Green-colored sprinkler heads or green glass bulbs indicate a 200°F (93°C) activation temperature, which is classified as intermediate temperature rating.

Question 2

What is the purpose of the main drain test on a sprinkler system?

Accepted Answer

To verify adequate water supply and detect obstructions

Answer

The main drain test evaluates the water supply conditions by checking water pressure and flow, and can help detect any significant obstructions in the water supply piping.

Question 3

What is an obstruction investigation in a sprinkler system?

Accepted Answer

An internal inspection of sprinkler pipes for blockages from debris, corrosion, or foreign materials

Answer

An obstruction investigation involves opening and inspecting the interior of sprinkler piping to check for debris, corrosion, scale, or other materials that could restrict water flow.

Question 4

What is the minimum clearance required between stored materials and sprinkler deflectors?

Accepted Answer

18 inches

Answer

NFPA requires a minimum 18-inch clearance between the top of stored materials and sprinkler deflectors to ensure proper water distribution and spray pattern development.

Question 5

What component prevents water from flowing backward from the sprinkler system into the public water supply?

Accepted Answer

Check valve or backflow preventer

Answer

A check valve or backflow preventer is installed to prevent potentially contaminated water from the sprinkler system from flowing back into the public water supply.

F02 - NYC Fire Guard F-02 Practice Test

F02 - NYC Fire Guard F-02 Practice Test

F02 Sprinkler Systems 2