Noise and Vibration Assessment of a Roof Bolting Machine

Details

• Personal Author:
  Camargo HE ; Jurovcik P ; Yantek, David S.
• Description:
  In its 1996 National Occupational Research Agenda, the National Institute of Occupational Safety and Health (NIOSH) identified hearing loss as the most common job-related disease in the United States. Previous field studies by NIOSH have shown A-weighted sound levels at the operator's station on roof bolting machines used in coal mines exceed 100 dB when drilling. Laboratory vibration measurements conducted while drilling indicated that drill steel acceleration levels greatly exceed those of the drill motor, drill motor cover, the roof support plate, and the drilled media. Sound level measurements performed with parts of the drilling apparatus and the drilled media wrapped in leadfiberglass barrier-absorber blankets revealed that the drill steel is the dominant noise source. To evaluate the ability of a partial-height barrier to reduce operator noise exposure, 80% of the drill steel length was encapsulated in a quilted lead-fiberglass barrier-absorber sleeve. The partial-height barrier reduced the time-weighted average sound level (TWA) by 9.8 dB for the Mine Safety and Health Administration (MSHA) Permissible Exposure Level (PEL) criteria and 9.3 dB for the NIOSH Recommended Exposure Limit (REL) criteria. [Description provided by NIOSH]
• Subjects:
  Engineering Hearing Loss, Noise-Induced Manufacturing And Industrial Facilities Mining Noise Noise, Occupational Occupational Health Safety Workplace
• Keywords:
  Control-technology Engineering-controls Equipment-operators Exposure-levels Hearing-level Machine-operation Machine-operators Mine-workers Mining-equipment Mining-industry Noise-analysis Noise-control Noise-exposure Noise-induced-hearing-loss Noise-levels Noise-measurement Noise-pollution Noise-shielding Noise-shields Noise-sources Quantitative-analysis Sound Sound-analyzers Sound-propagation Statistical-analysis Work-areas Work-environment Work-operations Work-practices Worker-health Worker-motivation Workplace-studies

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• Series:
  Mining Publications
• ISSN:
  0736-2501
• Document Type:
  Text
• Genre:
  Journal Article
• Place as Subject:
  OSHA Region 3 ; Pennsylvania
• CIO:
  National Institute for Occupational Safety and Health (NIOSH)
• Division:
  OMSHR - Office of Mine Safety and Health Research
• Topic:
  Workplace Safety & Health
• Location:
  North America
• Volume:
  58
• Issue:
  6
• NIOSHTIC Number:
  nn:20038362
• Citation:
  Noise Control Eng J 2010 Nov; 58(6):601-610
• Contact Point Address:
  David S. Yantek, NIOSH, OMSHR, 626 Cochrans Mill Rd, P.O.Box 18070, Pittsburgh, PA 15236
• Email:
  DYantek@cdc.gov
• Federal Fiscal Year:
  2011
• Peer Reviewed:
  True
• Source Full Name:
  Noise Control Engineering Journal
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:a8a3c3b9fbf63c2e89f4cc605e0a43c66e9c905d2602e58739c84a6560654e6dbb8857b08742ef5ff5d7af99249b1e24e6bc44f121967a4971302443c8fee096
• Download URL:
  https://stacks.cdc.gov/view/cdc/227305/cdc_227305_DS1.pdf
• File Type:
  [PDF - 870.15 KB ]