Report of Investigations 9492: The Effect of Underground Mining Conditions on the Activation of Automatic Sprinklers

Details

• Journal Article:
  Pittsburgh, PA: U.S. Department of the Interior, Bureau of Mines, RI 9492
• Personal Author:
  Lazzara, Charles P. ; Pro, Richard W. ; Ryan, Mark W. ; Smith, Alex C.
• Description:
  The U.S. Bureau of Mines conducted a study to evaluate the effect of underground mining conditions on the activation of automatic sprinkler heads. Sprinklers were exposed to liquid fuel fires in a rectangular tunnel at airflows of 0, 45, 90, 150, and 250 m/min to determine the effect of ventilation and fire size on the time to activation. As the airflows were increased, the time to activate the sprinklers for a given fire size increased. Also as the fire size increased the activation time decreased. Temperature profiles of the tunnel showed that the maximum temperature near the roof was shifted downstream as the airflow increased. Experiments to determine the effect of rated activation temperature and response time index (RTI) value on activation time showed that the time to activate increased with increasing activation temperature, and decreased with decreasing RTI value. [Description provided by NIOSH]
• Subjects:
  Fires Mining Occupational Health Safety
• Keywords:
  Coal-mines; Mine-fires; Mine-safety; Underground-mining; Sprinkler-systems; Mineral-industries
• Source:
  Pittsburgh, PA: U.S. Department of the Interior, Bureau of Mines, RI 9492, 1993 Aug; :1-20
• Series:
  NIOSH Numbered Publications   ; Mining Publications  
• Subseries:
  Report of Investigations
• Publisher:
  U.S. Department of the Interior, Bureau of Mines
• Document Type:
  Text
• Genre:
  Report
• Place as Subject:
  OSHA Region 3 ; Pennsylvania
• CIO:
  National Institute for Occupational Safety and Health (NIOSH)
• Division:
  PRC - Pittsburgh Research Center
• Topic:
  Workplace Safety & Health
• Location:
  North America
• Pages in Document:
  19 pdf pages
• NIOSHTIC Number:
  nn:10004785
• NTIS Accession Number:
  PB94-151297
• Federal Fiscal Year:
  1993
• Peer Reviewed:
  False
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:10f062a23728dfbf9fbd753bf0ac2891ce5e8481b397738099b89c3ba8735bf2a82b8619a4191a7ef3cd1f5a3417ab0d6a964a4e55ae1408e4da2277b5f2cd68
• Download URL:
  https://stacks.cdc.gov/view/cdc/10259/cdc_10259_DS1.pdf
• File Type:
  [PDF - 521.85 KB ]