Evaluation of Post-Blast Re-Entry Times Based on Gas Monitoring of Return Air

Details

• Personal Author:
  Bahrami D ; Rowland, James H. III ; Thomas R ; Yuan L ; Zhou L
• Description:
  Blasting is the main method of production in many noncoal underground mining operations, producing multiple toxic gases. The U.S. Mine Safety and Health Administration (MSHA) requires mine operators to measure the level of toxic gases in mines as frequently as necessary to ensure they are below regulatory safety limits. The current practice uses portable gas monitors to check the concentrations of toxic gases after a fixed post-blast time. This paper studies the application of a gas-monitoring system in the return entry of a limestone mine to determine a safe re-entry time. The study shows that the use of gas monitoring in the return air can be a useful tool at the mine operator's disposal to detect and reduce the risk of hazardous conditions and also to reliably estimate the reentry time. [Description provided by NIOSH]
• Subjects:
  Air Pollutants, Occupational Environmental Exposure Hazardous Substances Mining Occupational Health Risk Assessment Risk Factors Safety Safety Management Ventilation
• Keywords:
  Author Keywords: Ventilation Blasting Contaminant Spread Exposure Levels Gases Gas Monitoring Hazards Limestone Mines Measurement Equipment Miners Mine Safety And Health Administration Mining Equipment Mining Industry Monitoring Systems Monitors MSHA Re-entry Time Risk Factors Safety Monitoring Toxic Gases Toxins Underground Mines Underground Mining Workers Worker Safety Workplace Solutions

  More +
• Series:
  Mining Publications
• ISSN:
  0026-5187
• Document Type:
  Text
• Genre:
  Abstract or Summary
• Place as Subject:
  OSHA Region 3 ; Pennsylvania
• CIO:
  National Institute for Occupational Safety and Health (NIOSH)
• Division:
  PMRD - Pittsburgh Mining Research Division
• Topic:
  Workplace Safety & Health
• Location:
  North America
• Pages in Document:
  98-100
• Volume:
  71
• Issue:
  7
• NIOSHTIC Number:
  nn:20058600
• Citation:
  Min Eng 2019 Jul; 71(7):98-100
• Contact Point Address:
  D. Bahrami, CDC NIOSH, Pittsburgh, PA, USA
• Email:
  hwh0@cdc.gov
• Federal Fiscal Year:
  2019
• NORA Priority Area:
  Mining
• Peer Reviewed:
  True
• Source Full Name:
  Mining Engineering
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:0d214491335c1a535890b64b1b304f52f1b4369e96e1ec8b84b795ef23e95551d0a4119a3c93e151d90b6b54a4c5ed24cdd775e16ad0e468989e5de42e9316ff
• Download URL:
  https://stacks.cdc.gov/view/cdc/227967/cdc_227967_DS1.pdf
• File Type:
  [PDF - 155.84 KB ]