Evaluation of Different Shielding Materials for Reducing Electromagnetic Interference of the Personal Dust Monitor 3700

Details

• Personal Author:
  DeGennaro C ; Li J ; Noll J ; Srednicki J ; Zhou C
• Description:
  The personal dust monitor (PDM) (model PDM3700), as well as other electronic devices, can cause electromagnetic interference (EMI) which can disrupt the operation of some proximity detection systems (PDSs). A 15 cm (6 inch) minimum separation distance between the miner-wearable component (MWC) of the PDS and the electronic device usually avoids these disruptions, but due to the amount of equipment on a miner's belt and the method of wearing the PDM in some situations, this distance can be difficult to always reliably maintain. Another method of reducing EMI effects is utilizing magnetic field shielding. The shielding capability of several different materials was investigated by surrounding the PDM with the material and quantifying the EMI. A copper mesh pouch reduced the EMI from a PDM3700, allowing a minimum separation distance of 10 cm (4 inches) instead of 15 cm (6 inches) as shown in a previous study for an unshielded PDM. A MU-metal box had a better shielding effectiveness, as it further reduced the minimum separation distance to less than 7 cm (2.8 inches). Shielding reduced the EMI of the PDM with MU-metal providing better results than the copper mesh. These materials may be beneficial for shielding individual components of the PDM or for constructing a shielded pouch. However, before the advantages of a shielded pouch can be determined, the effects of just the shielding material (metal) on the PDS needs to be quantified. [Description provided by NIOSH]
• Subjects:
  Copper Dust Electrical Equipment And Supplies Mining Mortality Occupational Health Personal Protective Equipment Safety
• Keywords:
  Coal Mines Detectors Dusts Electromagnetic Interference Electronic Devices Fatalities Injuries Magnetic Fields Miners Mine Safety And Health Administration Monitors MSHA Personal Protective Equipment PPE Underground Mines Underground Mining

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• Series:
  Mining Publications
• Publisher:
  Society for Mining, Metallurgy, and Exploration, Inc.
• Document Type:
  Text
• Genre:
  Proceedings
• Place as Subject:
  Colorado ; Minnesota ; OSHA Region 3 ; OSHA Region 5 ; OSHA Region 8 ; 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:
  1-5
• NIOSHTIC Number:
  nn:20051358
• Citation:
  2018 SME Annual Meeting, February 25-28, 2018, Minneapolis, Minnesota, preprint 18-078. Englewood, CO: Society for Mining, Metallurgy, and Exploration, Inc., 2018 Feb; :1-5
• Contact Point Address:
  J. Noll, NIOSH, Pittsburgh, PA
• CAS Registry Number:
  Copper (CAS RN 7440-50-8)
• Federal Fiscal Year:
  2018
• NORA Priority Area:
  Mining
• Peer Reviewed:
  False
• Source Full Name:
  2018 SME Annual Meeting, February 25-28, 2018, Minneapolis, Minnesota, preprint 18-078
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:0fb9d1f42df189a636b0e8ecc35bc764760dfe32f327edc89d05698824a2ed046c5e897ab2094f9ba5c0c0e99dce75ba1b14da6576382870864d212c6399c1e9
• Download URL:
  https://stacks.cdc.gov/view/cdc/227665/cdc_227665_DS1.pdf
• File Type:
  [PDF - 701.87 KB ]