Potential explosion hazard of carbonaceous nanoparticles: screening of allotropes

Details

• Personal Author:
  Dastidar AG ; Fernback, Joseph E. ; Osterberg P ; Turkevich LA
• Description:
  There is a concern that engineered carbon nanoparticles, when manufactured on an industrial scale, will pose an explosion hazard. Explosion testing has been performed on 20 codes of carbonaceous pow- ders. These include several different codes of SWCNTs (single-walled carbon nanotubes), MWCNTs (multi- walled carbon nanotubes) and CNFs (carbon nanofibers), graphene, diamond, fullerene, as well as several different control carbon blacks and graphites. Explosion screening was performed in a 20 L explosion chamber (ASTM E1226 protocol), at a concentration of 500 g/m 3, using a 5 kJ ignition source. Time traces of overpressure were recorded. Samples typically exhibited overpressures of 5-7 bar, and deflagration index K St = V 1/3 (d P /d t ) max more or less 10-80 bar m/s, which places these materials in European Dust Explosion Class St-1. There is minimal variation between these different materials. The explosive characteristics of these carbonaceous powders are uncorrelated with primary particle size (BET specific surface area). [Description provided by NIOSH]
• Subjects:
  Dust Environmental Exposure Occupational Health Risk Assessment Risk Factors Safety
• Keywords:
  Author Keywords: Explosion Hazard Carbon Dust Explosions Dusts Explosive Dusts Explosive Hazards Exposure Levels Hazards Nanomaterials Nanoparticle Nanoparticles Nanotechnology Risk Factors Spontaneous Combustion

  More +
• ISSN:
  0010-2180
• Document Type:
  Text
• Genre:
  Journal Article
• Place as Subject:
  Illinois ; Ohio ; OSHA Region 5
• CIO:
  National Institute for Occupational Safety and Health (NIOSH)
• Division:
  DART - Division of Applied Research and Technology
• Topic:
  Workplace Safety & Health
• Location:
  North America
• Pages in Document:
  218-227
• Volume:
  167
• NIOSHTIC Number:
  nn:20047783
• Citation:
  Combust Flame 2016 May; 167:218-227
• Contact Point Address:
  Leonid A. Turkevich, National Institute for Occupational Safety and Health, Division of Applied Research and Technology, 1090 Tusculum Avenue, MS-R7, Cincinnati, OH 45226
• Email:
  LLT0@cdc.gov
• CAS Registry Number:
  Carbon (CAS RN 7440-44-0)
• Federal Fiscal Year:
  2016
• NORA Priority Area:
  Manufacturing
• Peer Reviewed:
  True
• Source Full Name:
  Combustion and Flame
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:20fe7e3f638d1a91772092b7790858fb3ae16b82e0cde5b2657a6a9be06cfcd46270902550f3be608ad7eaa371cd4ca7da30a9ffe97627688f90ab27f68025bc
• Download URL:
  https://stacks.cdc.gov/view/cdc/202762/cdc_202762_DS1.pdf
• File Type:
  [PDF - 1.78 MB ]