Introduction
Quantitative Risk Assessment (QRA) is a structured, data-driven methodology used to evaluate the risks associated with major accident events in Oil & Gas facilities. By combining frequency analysis with consequence modelling, QRA quantifies the potential impact of hazards such as fires, explosions, and toxic releases on personnel, assets, and the environment.
Using advanced modelling tools and industry-recognized techniques, QRA provides a clear, numerical understanding of risk levels, supporting informed decision-making and performance-based safety design.
Purpose
- Quantify individual and societal risks associated with major accident scenarios
- Identify key risk contributors and high-risk areas within the facility
- Evaluate the effectiveness of existing safeguards and risk reduction measures
- Support risk-informed design, layout optimization, and decision-making
- Demonstrate compliance with regulatory requirements and company risk criteria
- Provide a robust basis for Safety Case development and approval
Outcomes
- Individual Risk (IR/LSIR/IRPA) and Societal Risk (FN curves) results
- Identification of dominant risk contributors and scenarios
- Risk contour maps highlighting high-risk zones
- Assessment of potential impacts on personnel, equipment, and environment
- Recommendations for risk reduction and mitigation measures
- Support for ALARP demonstration and regulatory compliance
- Integration with other studies (FERA, EERA, ESSA, CFD, F&G Mapping)
- Comprehensive QRA report ensuring traceability and audit readiness