Estimating the impact of accident scenarios
Many things can go wrong on a high-risk industrial facility, leading to an unintended release of hazardous material, an uncontrolled release of energy or some other accidental loss. Consequence assessment is a rigorous and methodical examination of the direct undesirable impacts of a loss of containment of material or energy, including fires and explosions. It consists of estimating impacts on people, the environment and the process equipment.
Consequence assessment has applications in:
the design of new facilities, for instance in suggesting optimal separation distances between units, to avoid domino effects
risk assessment of a facility to provide input to a safety case
emergency planning and land use planning: estimate impact distances for major accident scenarios
This submodule is a part of the hazard analysis module.
Consequence modelling: overview of hazards
We recommend the following sources of further information on this topic:
Fire, Explosion and Risk Assessment Topic Guidance from the UK HSE’s Hazardous Installations Directorate
The IOGP report Risk Assessment Data Directory
The famous Yellow Book published by TNO contains large amounts of information on hazardous phenomena
DNV GL Software’s YouTube channel presents a number of their software tools for consequence assessment, including PHAST-Risk
The US Chemical Safety Board safety video Dangerously Close: Explosion in West, Texas illustrates the importance of land-use planning in mitigating the effect of industrial accidents.