Performance of concrete block and steel panel stoppings in a simulated mine fire.

Details

• Personal Author:
  Lazzara, Charles P. ; Ng, Daniel L.
• Description:
  The U.S. Bureau of Mines constructed a facility in the multiple-entry section of its Bruceton Experimental Mine to evaluate the fire endurance of mine stoppings. The test stopping (up to 6 ft high by 18 ft wide) is subjected to a 70 min, 75,000 Btu/min liquid fuel tray fire. The stopping and adjacent areas are instrumented with thermocouples and heat flux gauges. Two 8 in. thick concrete block stoppings and a galvanized steel stopping were evaluated in four tests. A crack developed on the fire-exposed surface of both block stoppings where the flames were most intense. However, the unexposed surface of the stoppings was undamaged and its maximum temperature was about 80 degrees C. The steel stopping retained its structural integrity during the test. The temperature of the unexposed steel surface reached 490 degrees C, but combustible materials located 1 ft from the surface did not ignite. Heat energy transmitted across the steel stopping was approximately halved when a 3/4 in. thick coating of construction plaster was applied to its fire-exposed surface. All stoppings prevented the passage of flame and smoke. [Description provided by NIOSH]
• Subjects:
  Fires Mining Occupational Health Safety Smoke
• Keywords:
  Fire-hazards; Fire-protection; Fire-resistant-materials; Smoke-control; Mine-fires; Mine-shafts; Mining-industry
• Series:
  Mining Publications
• ISSN:
  0015-2684
• Document Type:
  Text
• Genre:
  Journal Article
• 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:
  51-74
• Volume:
  26
• Issue:
  1
• NIOSHTIC Number:
  nn:10007531
• Citation:
  Fire Technol 1990 Feb; 26(1):51-74
• Federal Fiscal Year:
  1990
• Peer Reviewed:
  False
• Source Full Name:
  Fire Technology
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:7dc847c09aedf140bc731323e8446b4703641ae07d6ad9e7b7238120dab30b8f7dcaa9b938d34d035f87873a0fe7fec262d5d13dcaf290925445e82b6de3b57d
• Download URL:
  https://stacks.cdc.gov/view/cdc/246698/cdc_246698_DS1.pdf
• File Type:
  [PDF - 168.02 KB ]