Influence of Cable Splices on the Magnetic Coupling from Proximity Detection Systems to Trailing Cables

Details

• Personal Author:
  Carr J ; Damiano, Nicholas W. ; Whisner B ; Zhou C
• Description:
  Proximity detection systems (PDSs) are a critical safety system used in the mining industry for protecting miners from pinning, crushing, and striking hazards. The magnetic fields from a PDS generator can be parasitically coupled to a trailing cable, which often causes false alarms and thus should be avoided. Researchers at the National Institute for Occupational Safety and Health (NIOSH) have conducted extensive studies to investigate the major controlling factors of magnetic field coupling from a PDS generator to an un-spliced (i.e., continuous) trailing cable. Trailing cables, however, might have splices and whether a splice would affect (enhance or degrade) the parasitical coupling is still unknown. In this study, we designed an experiment to characterize the influence of a cable splice on the parasitic coupling. A commercial PDS with four magnetic field generators installed on a continuous mining machine (CMM) were used to generate the magnetic fields that are coupled to a trailing cable powering the CMM. Two splices were made with one close to one of the PDS generators (<1m) and the other one far (>5m) from all four generators. The coupled magnetic fields along the trailing cable were recorded before and after each splice was made. The results show that both splices introduce no significant changes to the coupled fields. The conclusions and findings in this paper can help better understand the safety concerns caused by parasitically coupling from PDSs to trailing cables. [Description provided by NIOSH]
• Subjects:
  Accident Prevention Accidents Electromagnetic Fields Manufacturing And Industrial Facilities Mining Occupational Health Safety
• Keywords:
  Accident Prevention Cables Continuous Mining Control Equipment Detectors Electrical Equipment Electromagnetic Energy Electromagnetic Fields Electromagnetic Interference EMF Equipment Reliability Injury Prevention Machine Operation Machinery Magnetic Fields Magnetic Properties Performance Tests Proximity Detection Underground Mining Worker Safety

  More +
• Series:
  Mining Publications
• Publisher:
  Society for Mining, Metallurgy and Exploration
• Document Type:
  Text
• Genre:
  Proceedings
• Place as Subject:
  Arizona ; Colorado ; OSHA Region 3 ; OSHA Region 8 ; OSHA Region 9 ; 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:20059717
• Citation:
  MineXchange: 2020 SME Annual Conference & Expo, February 23-26, 2020, Phoenix, Arizona, preprint 20-107. Englewood, CO: Society for Mining, Metallurgy & Exploration, 2020 Feb; :1-4
• Contact Point Address:
  C, Zhou, NIOSH Pittsburgh Mining Research Division, Pittsburgh, PA 15236, USA
• Federal Fiscal Year:
  2020
• NORA Priority Area:
  Mining
• Peer Reviewed:
  False
• Source Full Name:
  MineXchange: 2020 SME Annual Conference & Expo, February 23-26, 2020, Phoenix, Arizona, preprint 20-107
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:a914a459035459b79a2c057c1260d11f72539f064314fdd74d381a366fed284b61fac9e6a43ca607834cc7793df2c8a6191bc06785952559db1db3d3b1f5f28b
• Download URL:
  https://stacks.cdc.gov/view/cdc/215280/cdc_215280_DS1.pdf
• File Type:
  [PDF - 310.84 KB ]