Quantitative Risk Assessments

A quantitative risk assessment (QRA) is a systematic approach to estimating the likelihood and consequences of hazardous events.

Geosyntec has extensive experience supporting clients by evaluating the risks posed by process, transport, occupational, and operational hazards on facilities and quantifying the cumulative risk to personnel and property. The QRA process allows the key risk drivers on a facility to be identified, and allows operators to target expenditure for the maximum reduction in risk.

We have developed a QRA model using Microsoft Excel and Visual Basic (VBA) in response to requests from industry for a robust, transparent, and user-friendly QRA package that could be tailored to individual requirements.

The key advantages of our model are:

  • Ease of use: inputs and outputs are made using Microsoft Excel, simplifying data input and manipulation;
  • Rapid assessment of changes: sensitivity studies can be performed in minutes, allowing risk reduction assessment during workshops;
  • Ability to view all calculation steps that go towards overall risk results;
  • No specialist software required; and
  • Links to other Geosyntec tools, enabling the implementation of detailed Fire Risk Assessment (FRA) and Passive Fire Protection (PFP) studies.

Geosyntec has extensive QRA experience on the following types of facilities:

  • Onshore and offshore (FPSO, FSU, FLNG, fixed platform, NUI) assessments
  • All sizes of facilities, from very large million tons per annum (MTA) LNG plants, to small pipeline receiving house assessments onshore; and from multi-jacketed bridge linked complexes, to small normally unmanned installation (NUI) manifold platforms
  • Detailed offshore blowout risk quantification
  • Facilities in the United Kingdom and worldwide

Concept, basic engineering / FEED, detailed engineering, FID, brownfield, and facility modifications

Lead Consultants

  • Andrew Nelson, CEng
    Andrew Nelson is a Senior Principal Engineer based in Australia with more than 20 years of experience in technical safety engineering and risk management. His practice is focused on hazardous indus ...
  • Duncan Talbert, FS Eng (TÜV Rheinland)
    Duncan Talbert is a Principal Technical Safety Engineer based in Scotland with more than 20 years of experience focused on major hazards management for offshore and onshore oil and gas production a ...
Geosyntec Consultants
Geosyntec is a specialized consulting and engineering firm that works with private and public sector clients to address new ventures and complex problems involving our environment, natural resources, and civil infrastructure.

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