Consequence Modelling Techniques

Topic Safety

CPD Hours 18


This course is also being delivered online – view details >>

Consequence modelling is used to predict accident effects and impact on people, the environment and property. The course draws upon loss-of-containment scenarios and guides you through a range of models, using workshops and case studies, to demonstrate different approaches to consequence modelling.

The course includes exercises on scenario definition, selection of input parameters, simple modelling and interpretation of results.

Note: delegates will need a Windows laptop, if this is a problem please let us know.

Course outline

  • Basic concepts and definitions
  • Consequences for modelling 
  • What is a model and when are they needed
  • Source terms and consequences for liquid vessels and pipes, gas vessels and pipes, flashing liquids, two phase vessels and pipes, and time dependency
  • Basic hazard identification methods
  • Dispersion models — passive/lighter than air, momentum jet, heavy gas and CFD techniques
  • Transition from source model to dispersion model
  • Interpretation of dispersion model results
  • Explosion modelling —  VCE, confined, semi-confined, vessel burst and dust explosions
  • Fire modelling — pool, jet, fireballs and assumptions
  • Application of results - inputs to risk analysis, QRA, LOPA , emergency response plans, escape and evacuation

Learning outcomes

By the end of the course delegates will understand:

  • how to identify a set of major accident scenarios on a facility handling hazardous materials
  • which types of models available for different scenarios and which are appropriate at different stages of plant design or operation
  • the limitations of the various model types
  • how to define the possible outcomes of hazardous material release e.g fire, explosions and toxic effects
  • the requirements for modelling these hazards
  • the possible impact of hazards on people, the environment and property 
  • the importance of defining source terms (initial conditions), including uncertainty
  • how to specify a range of hazard studies and interpret the output
  • how to interpret model results and how they are used in quantified risk analysis
  • regulatory requirements for consequence modelling.

Who will benefit

  • Project and plant managers
  • Safety managers responsible for preparing safety reports and interpreting modelling results
  • Professionals using consequence models and/or their results and want further guidance on the bases, validity and uses of modelling
  • Those new to the field of process safety
  • Anyone would needs to understand the potential scale of accidents and the consequences

Previous delegates say

"Giles (Peach) was able to provide practical real world experience to support the theory of the course, and provided advice and experiences which were beneficial for the application of consequence modelling and engaging consultants for our needs."
Ryan Gordon, GPA Engineering, Australia

"Giles (Peach) had excellent knowledge on the topic from a theoretical point of view (ie basis of modelling, history & development) as well as from an experiential point of view." 
Elisheba Radke, BHP, Australia


Discounts are available to companies booking more than one place:

  • 2 places — 5% discount
  • 3 places — 10% discount
  • 4 or more places — 15% discount.


IChemE requires that its trainers and training venues follow all local government guidelines with regard to COVID-19 on its training courses. All delegates will also be required to adhere to the guidelines and further communication on this matter will be issued to attendees closer to the course.

Whilst our usual cancellation terms and conditions apply, delegates can transfer to a later face-to-face course date or an online iteration of the same course at any stage, without incurring a cancellation fee.

In the event of IChemE being unable to deliver the training course as planned, a full refund will be provided.

In-company training

This course is also available as an in-company course (face-to-face or online) where content can be customised to meet your organisation's specific needs and delivered on a date/location that suits your requirements. Contact us for more information.

Back to courses