Report of Investigations 7998: Noise Abatement of Pneumatic Rock Drill

Details

• Journal Article:
  Pittsburgh, PA: U.S. Department of the Interior, Bureau of Mines, RI 7998
• Personal Author:
  Summers, Charles R. ; Murphy, John N.
• Description:
  In response to the Coal Mine Health and Safety Act of 1969, mandatory noise standards have been developed that specify time- noise limits of mine personnel exposure. Most affected by elevated noise levels is the pneumatic roof bolter operator, both in terms of levels near or in excess of 115 dba and in terms of length of exposure. Therefore, the principal emphasis of this Bureau of Mines report is on pneumatic drill noise control. It is not the intent of this report to suggest any drill redesign; instead, methods are suggested to reduce the noise level by complementing existing machines. An integral muffler system and a separate muffler system were tested in an attempt to lower pneumatic drill noise levels. Pneumatic drills, when new, operate at about 115 dba when drilling in sandstone. Using the drill muffler systems, it was possible to decrease the noise level of a 115-dba stope drill to approximately 100 dba. [Description provided by NIOSH]
• Subjects:
  Engineering Mining Noise Noise, Occupational Occupational Health Safety
• Keywords:
  Mining-industry; Mining-equipment; Noise; Noise-exposure; Noise-levels; Noise-sources; Power-tools; Pneumatic-tools; Pneumatic-equipment; Engineering-controls; Control-technology
• Source:
  Pittsburgh, PA: U.S. Department of the Interior, Bureau of Mines, RI 7998, 1974 Dec; :1-45
• Series:
  Mining Publications   ; NIOSH Numbered Publications  
• Subseries:
  Report of Investigations
• Document Type:
  Text
• Genre:
  Report
• Place as Subject:
  OSHA Region 3 ; Pennsylvania
• CIO:
  National Institute for Occupational Safety and Health (NIOSH)
• Division:
  PRC - Pittsburgh Research Center
• Topic:
  Workplace Safety & Health
• Location:
  North America
• Pages in Document:
  51 pdf pages
• NIOSHTIC Number:
  nn:10000217
• NTIS Accession Number:
  PB-240095
• Federal Fiscal Year:
  1975
• Peer Reviewed:
  False
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:0544114b606d76248f939fbcc0915d2e180c2fbbb87f82141e2aaca6e565613794208661eeef2691048631bb51dbc413bf735ef919c738b414886564e9bb5d48
• Download URL:
  https://stacks.cdc.gov/view/cdc/9233/cdc_9233_DS1.pdf
• File Type:
  [PDF - 5.70 MB ]