Sprinkler Systems Flashcards
6 cards from real F02 practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 6 Sprinkler Systems flashcards as text
What color coding indicates a sprinkler head with a 200°F activation temperature?
Answer: Green
Green-colored sprinkler heads or green glass bulbs indicate a 200°F (93°C) activation temperature, which is classified as intermediate temperature rating.
What is the purpose of the main drain test on a sprinkler system?
Answer: To verify adequate water supply and detect obstructions
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.
What is an obstruction investigation in a sprinkler system?
Answer: An internal inspection of sprinkler pipes for blockages from debris, corrosion, or foreign materials
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.
What is the minimum clearance required between stored materials and sprinkler deflectors?
Answer: 18 inches
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.
What component prevents water from flowing backward from the sprinkler system into the public water supply?
Answer: Check valve or backflow preventer
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.
When should spare sprinkler heads be kept on the premises?
Answer: At all times, with at least 6 spare heads of each type installed in the building
NFPA 25 requires buildings to maintain a supply of spare sprinkler heads on the premises at all times, with a minimum of 6 heads for systems with under 300 heads.