- Author
-
Underwriters Laboratories, Incorporated
- Title
- Report of In-Rack Sprinkler Comparison Fire Tests.
- Coporate
- Underwriters Laboratories, Inc., Northbrook, IL
- Sponsor
- HSB Industrial Risk Insurers, Hartford, CT
- Report
-
NC1838-97NK31099
May 22, 1998
36 p.
- Keywords
-
sprinklers
|
sprinkler systems
|
fire tests
|
pallet storage
|
ignition
|
oxygen consumption
|
heat release rate
|
test facilities
|
instruments
|
scenarios
- Abstract
- Eight fire tests were conducted to evaluate and compare the level of protection provided by 1/2 in. nominal orifice in-rack sprinklers operating at a flowing pressure of 30 psi and 17/32 in. nominal orifice in-rack sprinklers flowing at 30 gpm. The fire tests were conducted in a double row rack storage array with in-rack sprinklers. Ignition was accomplished with two half cotton cellulose ignitors positioned 18 in. from the aisle. The in-rack sprinklers for Fire Test Nos. 4 and 6 were standard response 1/2 in. nominal orifice 165 deg F temperature rated sprinklers positioned in the longitudinal flue at the center of the bay on one level. The sprinkler was arranged to operate at a flowing pressure of 30 psi. The in-rack sprinkler for Fire Test Nos. 1 and 7 were standard response 1/2 in. nominal orifice 165 deg F temperature rated sprinklers positioned in the longitudinal flue at the rack uprights on one level. The sprinkler was arranged to operate at a flowing pressure of 30 psi. The in-rack sprinklers for Fire Test Nos. 3 and 5 were the standard response 17/32 in. nominal orifice 165 deg F temperature rated sprinklers positioned in the longitudinal flue at the center of the bay on one level. The sprinkler was arranged to operate at a flow of 30 gpm. The in-rack sprinkler for Fire Test Nos. 2 and 8 were the standard response 17/32 in. nominal orifice 165 deg F temperature rated sprinklers positioned in the longitudinal flue at the rack uprights on one level. The sprinklers were arranged to operate at a flow of 30 gpm per sprinkler. The tests were conducted under an oxygen consumption calorimeter to measure the heat release rates. A Table E-1 provides the testing parameters and results obtained. A complete description of the testing is presented in the following report.