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