Gas cloud explosion

A gas cloud explosion (VCE) occurs when a larger amount of gas is ignited, usually with containment effects due to obstacles in the combustion path.

Will be a gas cloud , created due to

• Evaporation of a flammable liquefied gas after a leak
• Evaporation of a flammable liquid heated above atmospheric boiling point after a leak
• Release of a flammable gas after a leak
• Pool formation after pouring out a volatile, flammable liquid,

If ignited by an ignition source, a so-called flash fire usually occurs , in which the cloud burns very quickly, but not fast enough to generate a dangerous pressure wave .

In connection with the term explosion , the rapid combustion of a flammable cloud is referred to as deflagration .

literature

• SAEFL , implementation of the Hazardous Incident Ordinance: Example of a methodology for determining the risk of a liquid gas tank system , 1996
• Heinz Koinig: Reference scenarios for Directive 96/82 / EC . Created on behalf of the Federal Ministry for the Environment, Youth and Family. Vienna 1999, 8th gas cloud fire, deflagration, flash fire, p. 45 .

Web links

• Analysis of the effects of disruptive material and energy releases in the process industry (accessed on April 2, 2020)
• Impact analysis (accessed on April 2, 2020)
• Development of an application-related methodology of risk assessment using the example of selected scenarios of pressure vessel failure of natural gas vehicles in road traffic (accessed on April 2, 2020)
• The risk analysis using consequence and probability of occurrence - methodology using the example of pressure vessel failure in natural gas vehicles (accessed on April 2, 2020)
• Investigations on the deterministic and probabilistic assessment of external effects (EVA events) - effects from hazardous substances and chemical explosions (accessed on April 2, 2020)