Metal arc welding hazard reduction by selection of the best combination of shield gas and metal transfer mode.

Details

• Personal Author:
  Chen B ; Keane M ; Stone S
• Description:
  The primary goal of the proposed project is to identify and develop ways in which the best current common gas metal arc welding practices may be selected to reduce worker exposure to welding fumes. The understanding of how process conditions influence fume profiles can significantly contribute to creating strategies for minimizing fume exposures and selecting engineering controls to avert adverse health effects. A welding chamber was designed and fabricated based on an American Welding Society chamber, and was adapted for use with a 102 mm filter holder and external monitors for ozone and total particulate matter. The welding piece is rotated with a motorized turntable, and flow was upward through a 102 mm electrets filter at 200 liters/min. The system was validated in the AWS specification test using mild steel axial spray mode with 100 percent CO2. Monitoring with both the DataRAM for TSP and a UV-ozone monitor, ozone was cleared in less than 2 minutes from the chamber, and TPM generally within 3 minutes after the arc time was completed.
• Subjects:
  Accidents, Occupational Aerosols Environmental Monitoring Occupational Health Safety
• Keywords:
  Arc-welding Employee-exposure Engineering-controls Exposure-assessment Exposure-chambers Exposure-levels Exposure-methods Filters Fumes Gas-welders Metal-fumes Metal-workers Metals Monitoring-systems Monitors Particulates Welders Welding Work-practices

  More +
• Publisher:
  National Institute for Occupational Safety and Health
• Document Type:
  Text
• Genre:
  Abstract
• Place as Subject:
  Ohio ; OSHA Region 3 ; OSHA Region 5 ; West Virginia
• CIO:
  National Institute for Occupational Safety and Health (NIOSH)
• Division:
  HELD - Health Effects Laboratory Division
• Topic:
  Workplace Safety & Health
• Location:
  North America
• Pages in Document:
  35
• NIOSHTIC Number:
  nn:20039540
• Citation:
  NORA Symposium 2011: Achieving Impact Through Research and Partnerships, July 12-13, 2011, Cincinnati, Ohio. Cincinnati, OH: National Institute for Occupational Safety and Health, 2011 Jul; :35
• CAS Registry Number:
  Carbon dioxide (CAS RN 124-38-9) ; Ozone (CAS RN 10028-15-6)
• Federal Fiscal Year:
  2011
• NORA Priority Area:
  Construction
• Peer Reviewed:
  False
• Source Full Name:
  NORA Symposium 2011: Achieving Impact Through Research and Partnerships, July 12-13, 2011, Cincinnati, Ohio
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:528b0d4ed684013774fb16ebb9f0ef0fa545c66eea002e132a48aeec9b2f4f0a1e366fc78aaf13679d81aa96eb7f7d401320ec82054bb548d566ade2264165e3
• Download URL:
  https://stacks.cdc.gov/view/cdc/181586/cdc_181586_DS1.pdf
• File Type:
  [PDF - 33.82 KB ]