Characterizing Radio Emissions from Electronic Systems Used in Underground Coal Mines

Details

• Personal Author:
  Srednicki J ; Zhou C
• Description:
  Electronic systems have been increasingly used in underground mines to improve mine safety. These electronic systems emit electromagnetic (EM) energy which can adversely impact the performance of other electronic systems nearby and thus should be characterized. Researchers at the National Institute for Occupational Safety and Health (NIOSH) characterized the magnetic fields emitted from devices that can potentially interfere with the performance of proximity detection systems (PDSs) and compared the emission levels of these devices to the susceptibility of PDSs. In this paper, we present our measurement results pertaining to this effort. Particularly, magnetic fields emitted from the different orientations of a powered air purifying respirator (PAPR) and two lite trackers are evaluated based on the RE101 protocol specified in the MIL-STD-461G standard. The results show that both devices emit strong magnetic fields which strongly depend on the orientation of the devices. At some frequencies, the maximum emission levels from the two devices exceed both the emission limit given in MIL-STD-461G and the maximum magnetic fields that a PDS can withstand without a failure. The results and findings in this paper can help the mining industry better understand electromagnetic interference (EMI) underground and provide critical scientific data that support mining-specific recommendations to address EMI-related challenges. [Description provided by NIOSH]
• Subjects:
  Electrical Equipment And Supplies Mining Occupational Health Respiratory Protective Devices Safety
• Keywords:
  Air Purifying Respirators APR Electromagnetic Interference Electronic Equipment Emission Sources Mine Safety Mining Industry Underground Mines
• Series:
  Mining Publications
• ISBN:
  9781713872368
• Publisher:
  Society for Mining, Metallurgy & Exploration (SME)
• Document Type:
  Text
• Genre:
  Proceedings
• 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:
  1-4
• NIOSHTIC Number:
  nn:20067862
• Citation:
  MineXchange: 2023 SME Annual Conference and Expo, February 26-March 1, 2023, Denver, Colorado, preprint 23-012. Englewood, CO: Society for Mining, Metallurgy & Exploration, 2023 Feb; :1-4
• Federal Fiscal Year:
  2023
• NORA Priority Area:
  Mining
• Peer Reviewed:
  False
• Source Full Name:
  MineXchange: 2023 SME Annual Conference and Expo, February 26-March 1, 2023, Denver, Colorado, preprint 23-012
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:fe50f10e172ab8864408367e83402ad53d703a15841212b7853096baa997a687572b8654d4bb120be5cbf2d197a75778c0782811e0f11d0b6f12c24d7cb86835
• Download URL:
  https://stacks.cdc.gov/view/cdc/215607/cdc_215607_DS1.pdf
• File Type:
  [PDF - 316.72 KB ]