Particles in welding fumes.

Details

• Personal Author:
  Williams RT
• Description:
  The purpose of this study was to investigate whether or not differing base metals and filler wires used during welding processes contributed to differing amounts of ultrafine particles (UFP) and nanoparticles being emitted during the welding procedure in order to determine if UFP and NP exposures differed with base metal and filler wire, all welding processes utilized the same welding machine for metal inert gas (MIG), the same wire speed, and the same voltages during each welding process. The only variation in welding procedures were cover gases used, base metals, and filler wires. Measurements gathered during welding procedures were conducted in the breathing zone of the welder and pipefitters consisted of UFP measurements taken by two different condensation particle counters (CPC), which operated in synchrony at the start and cessation of the welding process. NP measurements were taken by a NanoScan Scanning Mobility Particle Sizer (SMPS) and were also placed in the breathing zone of the welder According to the results, base metal and filler wire do emit differing amounts of NP and UFP during the welding processes. Carbon steel emits the highest amount of nanoparticles, while stainless steel emits the second highest amount, and Inconel emits the least. The results also concluded that welders are exposed to a greater concentration of nanoparticles and UFPs than those experienced by pipefitters who stand 6ft from the welding arc. [Description provided by NIOSH]
• Subjects:
  Environmental Exposure Metals Occupational Health Risk Assessment Risk Factors Safety Welding
• Keywords:
  Author Keywords: Nanoparticle; Ultrafine Particle; MIG Welding; Exposure Welding Fumes; Welding; Welding Equipment; Metals; Ultrafine Particles; Nanoparticles; Emission Sources; Exposure Levels; Risk Factors; Inert Gases; Breathing Zone; Carbon;
• Publisher:
  University of South Florida
• Document Type:
  Text
• Funding:
  Grant
• Genre:
  Thesis
• Place as Subject:
  Florida ; OSHA Region 4
• CIO:
  National Institute for Occupational Safety and Health (NIOSH)
• Topic:
  Workplace Safety & Health
• Location:
  North America
• Pages in Document:
  1-71
• NIOSHTIC Number:
  nn:20065682
• Citation:
  Tampa, FL: University of South Florida, 2018 Jun; :1-71
• Email:
  williamsr2@health.usf.edu
• CAS Registry Number:
  Carbon (CAS RN 7440-44-0)
• Federal Fiscal Year:
  2018
• Performing Organization:
  Sunshine Education and Research Center, University of South Florida
• Peer Reviewed:
  False
• Start Date:
  20050701
• Source Full Name:
  Particles in welding fumes
• End Date:
  20290630
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:096b7f8c80e1127654116c1aa4a834bfd59e2fc61ab4b01661138228de69aff2e6c3d20af4fc761f568db3131f1794ca9bed9ac30e580e679e1cfa63a8a059eb
• Download URL:
  https://stacks.cdc.gov/view/cdc/249507/cdc_249507_DS1.pdf
• File Type:
  [PDF - 10.18 MB ]