National Technical Reports Library

The National Technical Information Service acquires, indexes, abstracts, and archives the largest collection of U.S. government-sponsored technical reports in existence. The NTRL offers online, free and open access to these authenticated government technical reports. Technical reports and documents in its repository may be available online for free either from the issuing federal agency, the U.S. Government Publishing Office’s Federal Digital System website, or through search engines.

Details

Performance of Automatic Sprinkler Systems for Extinguishing Incipient and Propagating Conveyor Belt Fires Under Ventilated Conditions.

PB95200879

Publication Date	1994
Personal Author	Smith, A. C.; Pro, R. W.; Lazzara, C. P.
Page Count	30
Abstract	The U.S. Bureau of Mines conducted a study to evaluate the effectiveness of automatic water sprinkler systems on the suppression of incipient and propagating conveyor belt fires under ventilated conditions. Large-scale experiments were performed in a fire gallery at airflows ranging from 1.1 to 4.6 m/s. In incipient fire experiments, with 100 C, standard response sprinklers installed above and between the two strands of belting, the results showed that the sprinklers activated later, the peak heat release rates were larger, and more belting was consumed at the higher airflow. In similar experiments with 74 C, fast response sprinklers, the sprinklers activated at the same heat release rate for both high and airflows, but the peak heat release rate and amount of belt consumed was slightly higher at the lower airflow. In incipient fire experiments with sprinklers located only above the top belt, the heat release rate and amount of belt consumed was larger at the higher airflow. The propagating fire experiments showed that sprinklers located above and between the belts were effective in stopping flame propagation. Peak heat release rates and amount of belt consumed were larger at the higher airflows for both the 74 C, fast response and 100 C, standard response sprinklers. The sprinklers were equally effective at each airflow.
Keywords	Fire suppression Sprinklers Belt conveyors Mines(Excavations) Fire extinguishers Fire protection Ventilation Fires Mine hazards Fire fighting Mining equipment Air flow Flame propagation
Source Agency	Bureau of Mines
NTIS Subject Category	48A - Mineral Industries
Corporate Authors	Bureau of Mines, Pittsburgh, PA. Pittsburgh Research Center.
Document Type	Technical Report
Title Note	Rept. of investigations/1995.
NTIS Issue Number	199514

Performance of Automatic Sprinkler Systems for Extinguishing Incipient and Propagating Conveyor Belt Fires Under Ventilated Conditions.

Performance of Automatic Sprinkler Systems for Extinguishing Incipient and Propagating Conveyor Belt Fires Under Ventilated Conditions.
PB95200879

Publication Date	1994
Personal Author	Smith, A. C.; Pro, R. W.; Lazzara, C. P.
Page Count	30
Abstract	The U.S. Bureau of Mines conducted a study to evaluate the effectiveness of automatic water sprinkler systems on the suppression of incipient and propagating conveyor belt fires under ventilated conditions. Large-scale experiments were performed in a fire gallery at airflows ranging from 1.1 to 4.6 m/s. In incipient fire experiments, with 100 C, standard response sprinklers installed above and between the two strands of belting, the results showed that the sprinklers activated later, the peak heat release rates were larger, and more belting was consumed at the higher airflow. In similar experiments with 74 C, fast response sprinklers, the sprinklers activated at the same heat release rate for both high and airflows, but the peak heat release rate and amount of belt consumed was slightly higher at the lower airflow. In incipient fire experiments with sprinklers located only above the top belt, the heat release rate and amount of belt consumed was larger at the higher airflow. The propagating fire experiments showed that sprinklers located above and between the belts were effective in stopping flame propagation. Peak heat release rates and amount of belt consumed were larger at the higher airflows for both the 74 C, fast response and 100 C, standard response sprinklers. The sprinklers were equally effective at each airflow.
Keywords	Fire suppression Sprinklers Belt conveyors Mines(Excavations) Fire extinguishers Fire protection Ventilation Fires Mine hazards Fire fighting Mining equipment Air flow Flame propagation
Source Agency	Bureau of Mines
NTIS Subject Category	48A - Mineral Industries
Corporate Authors	Bureau of Mines, Pittsburgh, PA. Pittsburgh Research Center.
Document Type	Technical Report
Title Note	Rept. of investigations/1995.
NTIS Issue Number	199514