Quantitative Risk Analysis

Quantitative Risk Analysis Defined

A quantitative risk analysis (QRA) involves the detailed estimation of the expected frequency and consequences of potential accidents associated with a facility or operation.

Value of QRA

A QRA is an invaluable method for making informed risk-based process safety planning decisions, as well as being fundamental to any facility siting decision-making. It enables a detailed understanding of process risks, and where those risks arise from. In conducting a QRA, these risks can be better managed and mitigated.

Experienced Professionals

ioMosaic has a proven track record of performing QRAs. Our professionals have performed assessments on a wide range of facilities, such as refineries, chemical plants, pharmaceutical plants, tar sands, crude oil refineries, LNG facilities, and rail and marine transportation terminals. Let ioMosaic help you make risk-based decisions with confidence.

QRA Tools

ioMosaic uses the state-of-the-art software tool, Process Safety Office™ component SuperChems™, to conduct QRAs. SuperChems has all the functionality necessary to conduct a QRA and can be used for calculating risk for fixed facilities, pipelines or transportation routes. ioMosaic understands that QRAs consist of two principal steps: preparation and implementation. SuperChems can help you with both steps:


  • Define meteorological and topographical data in SuperChems
  • Visually define population data in SuperChems
  • Visually define Ignition data in SuperChems
  • Define your risk tolerability criteria


  • Generate failure scenarios in SuperChems
  • Generate results in SuperChems (graphical and tabular)
  • Discharge
  • Dispersion
  • Toxic effects
  • Radiation effects
  • Explosion effects
  • Individual risk
  • Societal risk
  • Analysis of results
  • Risk-ranking of scenarios
  • Filtering of results
  • What-If scenarios