The current knowledge on unconfined vapor cloud explosions is reviewed in the light of the hazard such an explosion represents especially to offshore installations and with the purpose of identifying the need for future research. The damage potential of an unconfined vapor cloud is determined by the rate of energy release during the explosion, or the flame speed. Unless strong acceleration mechanisms are present, the maximum pressure will be of the order of magnitude of 0.1 bar or less. Factors that accelerate the flame increase the damage potential of the cloud. Quantitatively, little is known about such mechanisms, and more research is needed on flame accelerations. On offshore platforms vapor cloud explosions may be strongly coupled to confined vented explosions. Research is needed on situations where a confined explosion propagate to an external vapor cloud and ignites this strongly.

  • Corporate Authors:

    Norske Veritas

    P.O. Box 300, Veritasveien 1
    N-1322 Hovik,   Norway 
  • Authors:
    • Pappas, J A
    • Solberg, D M
  • Publication Date: 1979-9

Media Info

  • Pagination: n.p.

Subject/Index Terms

Filing Info

  • Accession Number: 00319517
  • Record Type: Publication
  • Report/Paper Numbers: DnV Report 79-0615
  • Files: TRIS
  • Created Date: Oct 8 1980 12:00AM