Fire tests in ventilated rooms extinguishment of fire in grouped cable trays
The purpose of the work was to determine the required automatic sprinkler design density necessary to extinguish a developing fire in a grouped cable tray installation. Four preliminary tests and four extinguishment tests using PE/PVC cable were conducted within a specially designed, ventilated room. The results showed that an average design density of approximately 0.20 mm/s (0.30 gpm/ft/sup 2/) discharged from automatic sprinklers with a 13-mm (1/2-in.) orifice, 71/sup 0/C (160/sup 0/F) temperature rating and 3.05-m x 3.05-m (10-ft x 10-ft) spacing provided successful extinguishment for the specific grouped cable tray fires investigated. The results also provided data on a case where a developing fire in a grouped cable tray installation did not open any of the installed standard sensitivity sprinklers, suggesting another parameter (i.e., higher sensitivity sprinklers) in need of attention.
- Research Organization:
- Factory Mutual Research Corp., Norwood, MA (USA)
- OSTI ID:
- 6525979
- Report Number(s):
- EPRI-NP-2660; ON: DE83901136
- Country of Publication:
- United States
- Language:
- English
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