Engineering Measures for Noise Abatement of Mine Vent Fans and Ductwork

Details

• Personal Author:
  Leasure J ; Nakagawa M ; Tinianov B
• Description:
  Mine ventilation fans and their attached ductwork were identified as major noise sources in the underground coal mining environment. The sound intensity levels of two ventilation fans from the subject coal mine were measured and compared. The two fans were 34-inch diameter ventilation fan in both refurbished and worn conditions. The intensity levels of the worn unit yielded levels 10 to 30 dBA higher than those of the refurbished fan. It was also found that the unlined fiberglass ducts had little noise attenuation. In addition, they were acting as a noise source along their entire path and re-radiating the fan noise significant distances from the unit. In an attempt to predict the effectiveness of noise reduction techniques in the system, a model of the duct has been modeled using the statistical energy analysis (AutoSEA2) software. By changing the physical properties of the duct (i.e. adding insulation) via the model, predictions were made regarding noise reduction. Cost effective and viable physical noise reduction techniques for the system can then be ensured prior to implementation. In the future, these characteristics can be used to model the duct as a noise source in larger simulations. [Description provided by NIOSH]
• Subjects:
  Coal Coal Mining Engineering Hearing Loss Hearing Loss, Noise-Induced Mining Noise Noise, Occupational Occupational Health Safety Ventilation

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• Keywords:
  Coal-mining Control-technology Engineering-controls Hearing-loss Mining-equipment Noise-exposure Noise-induced-hearing-loss Noise-levels Noise-measurement Noise-propagation Noise-sources Noise-transmission Statistical-analysis Statistical-quality-control Underground-mining Ventilation-equipment Ventilation-systems

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• Series:
  Mining Publications
• Publisher:
  Institute of Noise Control Engineering of the USA
• Document Type:
  Text
• Funding:
  Cooperative Agreement
• Genre:
  Proceedings
• Place as Subject:
  Colorado ; Idaho ; OSHA Region 10 ; OSHA Region 3 ; OSHA Region 8 ; Pennsylvania ; Washington
• CIO:
  National Institute for Occupational Safety and Health (NIOSH)
• Division:
  PRL - Pittsburgh Research Laboratory
• Topic:
  Workplace Safety & Health
• Location:
  North America
• Pages in Document:
  1-10
• NIOSHTIC Number:
  nn:20033779
• Citation:
  NOISE-CON 2003: Proceedings of the 2003 National Conference on Noise Control Engineering, Cleveland, Ohio, June 23-25, 2003. Holger DK, Maling Jr. GC, eds., Ames, IA: Institute of Noise Control Engineering of the USA, 2003 Jun; :1-10
• Contact Point Address:
  NIOSH, Pittsburgh Research Laboratory, P.O. Box 18070, Pittsburgh, PA 15236
• Editor(s):
  Holger DK; Maling GC Jr.
• Federal Fiscal Year:
  2003
• Performing Organization:
  Colorado School of Mines
• Peer Reviewed:
  False
• Start Date:
  199909011
• Source Full Name:
  NOISE-CON 2003: Proceedings of the 2003 National Conference on Noise Control Engineering, Cleveland, Ohio, June 23-25, 2003
• End Date:
  20050831
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:2cec053c1f140ff4e684be9a6ddd349b77d60d464fa3b80ad2f9dd5b86fe2b4c093597aca2cd23b5757aee155bd7f1c5ba08adab4d4d668ae0aa706f9e7781c7
• Download URL:
  https://stacks.cdc.gov/view/cdc/226957/cdc_226957_DS1.pdf
• File Type:
  [PDF - 898.89 KB ]