How are fire sprinklers rated?

How are fire sprinklers rated?

Automatic sprinklers have different temperature ratings at which their fusible or glass bulb element is expected to break, enabling water to flow onto a fire. The temperature rating closely tracks rising ceiling temperatures, with options ranging from 135° F all the way up to 650° F (57° to 343° C).

What is a Category 3 sprinkler system?

These categories range from 1-3. Category 1 covers individual dwellings to small blocks of flats (less than 18M high). Category 2 covers large blocks of flats (over 18M high) and small residential care homes (10 residents or less). Category 3 covers large residential care homes (more than 10 residents) to hostels.

How big can an ESFR sprinkler system be?

ESFR fire suppression systems can be used in warehouses with ceilings as high as 45 feet and storage heights of 40 feet.

Which is a typical temperature rating for a sprinkler head?

Typically, ordinary or intermediate which has a temperature rating of 175-225OF (79-107OC) sprinklers are required to be installed unless a certain situation calls for a higher temperature classification.

Is sprinkler a Category 3 water?

“Is fire sprinkler system water category 1, 2, or 3?” The IICRC S500 defines category 3 water as: They are setup as either a wet system, charged with water or a liquid that has a very low freezing point to prevent accidental loss of water due to freezing conditions, or a dry system.

What radius does a sprinkler head cover?

8′
When properly installed, most sprinkler heads will have an 8′ coverage radius. This is one of many determining factors in how the sprinkler heads must be spaced.

How much area a sprinkler can cover?

Each sprinkler protects up to 17 m2 in light hazards and 9m2 in ordinary hazards.

How are ESFR sprinklers tested?

Actual Delivered Density (ADD) Testing ESFR Sprinkler Comparison Testing – Each of the 3 sprinklers (Tyco, Viking, Reliable) were tested as follows (12 ADD tests total): Horizontal Offset Test Number Obstruction (Tip of Joist to Sprinkler Centerline)

What does ESFR stand for?

Viking Early Suppression Fast Response (ESFR) Pendent Sprinkler VK503 is a fast response fusible element type sprinkler designed for early fire suppression. With a 16.8 (242 metric*) nominal K-Factor and special deflector, this sprinkler produces large, high-momentum water droplets in a hemispheric pattern below the deflector.

What is the minimum k factor for a pendent sprinkler?

NFPA 13 indicates the following for ESFR pendent sprinklers having a 16.8 nominal K-Factor: Position the deflector a maximum of•14”(356 mm) and a minimum of 6”(152 mm) below the ceiling. The minimum area of coverage allowed per sprinkler is 64 ft2(5.8 m) per NFPA 13.

What is the size of an ESFR test array?

ESFR Full Scale Testing Overview Test Array –Standard Group A commodity –30 ft. storage, 40 ft. ceiling –Double row racks, 6 in longitudinal and transverse flue space –ESFR K17 sprinklers, 52 psi –4 ft. aisles –4 bay target arrays –Sprinkler spacing 10 ft. x 10 ft.