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Molten Aluminum-Water Explosion Initiation Mechanism Study.


PB80191794

Publication Date 1975
Personal Author Nusbaum, M. S.
Page Count 310
Abstract Mechanisms for initiation of molten aluminum and water explosions were evaluated using bleed out simulations, chemical assessment of initiation, and mechanical, thermodynamic, and other potential initiation mechanism studies. Spontaneous nucleation of liquid quench water contained in quench pit surface capillaries was identified as the most probable initiation mechanism. An impact generated shock from aluminum flow over the quench pit surface was the most probable and frequent triggering mechanism for collapsing the vapor film which separates the molten aluminum and liquid water. Vapor film thickness reduction correlated with the time that the aluminum flow impacts quench tank side surfaces. The author concludes that the aluminum industry's current safety practices, which emphasize the elimination of the surface cavities which trap the liquid water required for initiation of the explosion, are a step in the right direction.
Keywords
  • Industrial medicine
  • Explosions
  • Safety
  • Aluminum
  • Liquid metals
  • Water
  • Initiation
  • Hazards
  • Aluminum industry
  • Reaction kinetics
  • Vapors
  • Occupational safety and health
Source Agency
  • National Institute for Occupational Safety and Health
NTIS Subject Category
  • 94H - Industrial Safety Engineering
  • 57U - Public Health & Industrial Medicine
Corporate Authors IIT Research Inst., Chicago, IL. Engineering Mechanics Div.; National Inst. for Occupational Safety and Health, Cincinnati, OH.
Supplemental Notes Prepared for Aluminum Association, New York.
Document Type Technical Report
Title Note Final rept.
NTIS Issue Number 198019
Contract Number
  • PHS-HSM-95-73-27
Molten Aluminum-Water Explosion Initiation Mechanism Study.
Molten Aluminum-Water Explosion Initiation Mechanism Study.
PB80191794

  • Industrial medicine
  • Explosions
  • Safety
  • Aluminum
  • Liquid metals
  • Water
  • Initiation
  • Hazards
  • Aluminum industry
  • Reaction kinetics
  • Vapors
  • Occupational safety and health
  • National Institute for Occupational Safety and Health
  • 94H - Industrial Safety Engineering
  • 57U - Public Health & Industrial Medicine
  • PHS-HSM-95-73-27
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