Peak Noise Exposure During Concrete Grinding in Confined Areas

Details

• Personal Author:
  Akbar-Khanzadeh F ; Ames A ; Laughlin J ; Milz S ; Wagner C ; Akbar-Khanzadeh F ; Ames A ; Laughlin J ; Milz S ; Wagner C
• Description:
  Objective: This study examined the levels of peak noise exposure during concrete grinding and complemented our previous study that assessed time-weighted-average (TWA) noise exposure for the same type of operation. Methods: Minute-average peak noise levels were measured by a personal noise dosimeter (Spark 705+, Larsen Davis) while concrete grinding was performed in a confined area (an indoor field laboratory) using a variety of grinder types and dust control methods. The total grinding time was 1715 minutes covering 44 grinding scenarios. Results: Overall minute-average peak noise exposure (dBC) during grinding was 113 +/- 5 (mean +/- SD) ranging from 104 -153. Noise exposure was different for 5 main dust control methods: (1) 119 +/- 10 during conventional (no dust control) grinding, (2) 115 +/- 5 during wet-grinding, (3)113+/- 4 when using a Shopvac, (4) 111+/- 3 when using local exhaust ventilation (LEV) - high-efficiency air filter (HEPA) within a tank (LEV-HEPA-tank), and (5) 109 +/- 6 when using LEV-HEPA-cyclone. Noise exposure (dBC) was also different for 3 sizes of grinding-cups (diamond blades) as follow: (1) 115 +/- 5 when using 6 inch (15 cm) diameter grinding-cup, (2) 112 +/- 5 when using 5 inch (12.5 cm), and (3) 111 +/- 5 when using 4 inch (10 cm). Conclusions: The results of this study indicated that the levels of approximately 0.8% of samples exceeded U.S. Occupational Safety and Health Administration (OSHA) criterion of 140 dBC peak noise. The highest level of peak noise was generated when using conventional method and 6 inch grinding cup. It is recommended that the grinding operators should be monitored for peak noise level and protected accordingly. [Description provided by NIOSH]
• Subjects:
  Dust Noise Noise, Occupational Occupational Health Safety
• Keywords:
  Dust Control Equipment Equipment Operation Grinding Equipment Noise Exposure Noise Levels
• Publisher:
  American Industrial Hygiene Association
• Document Type:
  Text
• Funding:
  Grant
• Genre:
  Abstract or Summary ; Abstract or Summary
• Place as Subject:
  Ohio ; OSHA Region 5
• CIO:
  National Institute for Occupational Safety and Health (NIOSH) ; National Institute for Occupational Safety and Health (NIOSH)
• Topic:
  Workplace Safety & Health ; Workplace Safety & Health
• Location:
  North America ; North America
• Pages in Document:
  74-75
• NIOSHTIC Number:
  nn:20054448
• Citation:
  AIHce 2012: American Industrial Hygiene Conference and Exposition, June 16-21, 2012, Indianapolis, Indiana. Falls Church, VA: American Industrial Hygiene Association, 2012 Jun; :74-75
• Federal Fiscal Year:
  2012
• Performing Organization:
  University of Toledo Health Science Campus, Ohio
• Peer Reviewed:
  False
• Start Date:
  20050701
• Source Full Name:
  AIHce 2012: American Industrial Hygiene Conference and Exposition, June 16-21, 2012, Indianapolis, Indiana
• End Date:
  20250630
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:b8000849e369038e35bd32bab6f09221c80e5d346cbec54af037df899a94b18e71d2549b6de975a3211d54fc06dd15f73fa2e8ca204b68edbbd7c3c13c508765
• Download URL:
  https://stacks.cdc.gov/view/cdc/217014/cdc_217014_DS1.pdf
• File Type:
  [PDF - 135.31 KB ]