Introduction
A Dispersion & Radiation Study is a detailed consequence modelling assessment used to evaluate the behavior and impact of hazardous releases within Oil & Gas facilities.
The study analyzes how flammable or toxic gases disperse in the atmosphere and how fire events – such as jet fires, pool fires – generate thermal radiation.
Purpose
– Assess dispersion of flammable and toxic gas releases under various conditions
– Evaluate thermal radiation effects from fire scenarios
– Identify hazardous zones based on concentration (e.g., LEL, toxic thresholds) and heat intensity
– Assess risks to personnel, equipment, and structures
– Support design of safety systems (e.g., fire protection, gas detection, layout)
Outcomes
– Gas dispersion contours (e.g., LEL, toxic concentration thresholds)
– Thermal radiation contours (e.g., heat flux levels for equipment and personnel impact)
– Identification of hazardous zones and impact distances
– Assessment of escalation potential and affected areas
– Recommendations for layout improvements and risk mitigation measures
