Phast Advanced Modelling Training.

Phast Advanced Modelling Training. 


Course code: SA-03/05

Duration: 3 days



This course is suitable for users familiar with the software and who have either attended SA-01 Phast training or are experienced users of the software. A good understanding of the concepts of quantitative risk assessment, consequence, dispersion and effects modelling is required, as is some experience of using this technology in the process industry.



The course covers the individual advanced Phast modules SA-03 through SA-05, which can be delivered as an integrated three-day course. The course may also be customized according to the needs of the participant and can include consulting services, e.g. for resolving specific scenarios.


Learning objectives

Upon completion of this course, you will understand the theoretical and practical aspects of the full range of modelling capabilities available in Phast. For each area of modelling covered, you will learn about the capabilities and limitations of each model along with a detailed description of the controlling parameters. The model groups are broadly categorized as discharge, dispersion, and flammable effects.


Target group

Users who need to carry out detailed consequence or risk analysis in the process industries using Phast, and need to have a good understanding of the complex modelling technology available within the software. Participants are likely to be from regulatory authorities, insurance industry, or engineering contractors and consultants.


Phast 3D Explosions Extension Training.

Phast 3D Explosions Extension Training.


Course code: SA-16

Duration: 1 day



The course is suitable for users familiar with Phast software and who have previously

attended SA-01 Phast training. SA-03/-05 Phast advanced modelling would also be

beneficial, but not mandatory.



Phast contains a new extension for performing more advanced consequence calculations

from explosions. This new approach to explosion modelling takes account of the effects of

congestion and confinement and the interactions between the dispersing cloud and these

regions when calculating overpressure and impulse results. The new modelling allows the

user to select either the Multi Energy or Baker Strehlow Tang explosion methodologies.

This course describes how to use the extensive new functionality, including defining

obstructed regions, viewing effect contour results, and setting options for the 3D

explosion calculations.


Learning objectives

Upon completion of this course, you will understand the theoretical and practical aspects

of the 3D explosion modelling available in Phast. This course focuses on the features

available in the software and explains how to use these to build a model of the plant

which includes congestion and confinement information and obtain the effect contours for

overpressure and impulse effects.


Target group

Users with previous experience using Phast who need to carry out detailed consequence

modelling calculations involving explosions. The training does not cover Phast usage and

 assumes delegates are already familiar with the software.


Course Outline.

Course outline for Phast Advanced and 3D Explosion Training:


SA-03 Phast Advanced Training Modelling of flammable effects (Day 1)

  • Introduction
  • Fires and radiation:
    • Radiation
    • Fireball
    • Pool fire
    • Jet fire
    • Flammable parameters
  • Flash fires
  • Explosion:
    • Introduction
    • BLEVE blast
    • TNT
    • Multi-energy
    • Baker Strehlow Tang
    • Explosion parameters
  • Standalone versus linked models

SA-04 Phast Advanced Training Dispersion and toxics modelling (Day 2)

  • Introduction
  • Dispersion modelling:
    • Outdoor release: Unified Dispersion Model (UDM)
    • In-building release: in-building dispersion (INBU)
  • Toxic effects:
    • Averaging time
    • Probability of death
    • Indoor dose
    • Toxic parameters

SA-05 Phast Advanced Training Discharge modelling (Day 3)

  • Introduction
  • Releases from vessels or pipes:
    • Process conditions and release scenarios
    • Releases from vessels or short pipes
    • Releases from long pipelines
    • Time-averaging for time-varying releases
    • Parameters
  • Pool evaporation


  • Introductions
  • Background, Concepts and Definitions
  • Obstructed Regions
  • Effect levels
  • Explosion methods:
    • Multi Energy
    • Baker Strehlow Tang
  • Phast 3D Explosion add-in results