FAQ - PHAST

FREQUENTLY ASKED QUESTIONS

REQUEST FOR INFORMATION

Does DNV offer process hazard analysis software that can be used in all stages of design and operation?

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Phast is the world's most comprehensive process hazard analysis software tool for all stages of design and operation. Phast examines the progress of a potential incident from the initial release to far-field dispersion analysis including modelling of pool spreading and evaporation, and flammable and toxic effects.

I am looking for a comprehensive process hazard analysis software tool, from the initial release to far-field dispersion. Can Phast be used for this?

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Phast examines the progress of a potential incident from the initial release to far-field dispersion analysis including modelling of pool spreading and evaporation, and flammable and toxic effects. Phast can be used to model fires (jet, pool and fireballs), explosions (chemical - vapour cloud explosions, in addition to physical - vessel failure) and the impact of the release of toxic materials.

What types of process hazard analysis can be addressed with Phast software?

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Phast is typically used in the following applications: (non-exhaustive list, in no order of priority)
  • Consequence analysis
  • Dispersion analysis
  • Emergency response planning
  • Equipment design
  • Escalation assessment
  • Facility siting
  • Fire risk assessment
  • Hazard and operability study (HAZOP)
  • Hazard identification (HAZID)
  • Hazardous area classification
  • Layer of protection analysis (LOPA)
  • Legislative compliance (e.g. Seveso studies)
  • Occupied buildings risk assessment
  • Offsite consequence analysis
  • Quantified risk assessment (QRA)
  • Site layout and optimization

In which industries is Phast used as a process hazard analysis tool?

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Phast is used for process hazard analysis in the following industries (non-exhaustive list):

  • Oil and gas
  • Petrochemical
  • Pharmaceutical
  • Academia
  • Transportation and storage
  • LNG
  • Hydrogen
  • CO2
  • Insurance
  • Energy
  • Public sector (governmental and regulatory bodies)
  • Chemical processing

How many companies use Phast for process hazard analysis?

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Phast is used for process hazard analysis by over 1000 organizations globally. Individual users number are over 10,000.

Can Phast software for process hazard analysis be applied to many different types of assets?

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Phast can be used for process hazard analysis of assets such as:

  • Refineries
  • Chemical plants
  • Transportation assets (tanker, trucks)
  • Pipelines
  • Storage facilities (tanks)
  • Petrol stations, etc.

What are the system requirements for Phast/Safeti?

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Product
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Typical use case
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RAM (GB)
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CPU
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Typical free hard disk space**
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CUDA
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Type (for equivalent)
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Number of cores
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Phast
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Modelling a small number of scenarios per study (e.g. vent dispersion, emergency scenario modelling, etc.)
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2 GB
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Intel i5
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2 or more
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5 GB
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Phast
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Modelling a large number of scenarios per study (e.g. as input to QRA, FERA, etc.)
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8 GB
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Intel i5
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4 or more
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10 GB
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Safeti, Safeti Offshore, Safeti-NL
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Performing QRA/FERA for small/medium size sites such as LNG terminals gas terminals
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8-32 GB*
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Intel i7 or i9
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4-8 or more
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50 GB
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Enabled
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Safeti, Safeti Offshore, Safeti-NL
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Performing QRA/FERA for large sites such as refineries or multiple pipelines
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16-64 GB*
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Intel i7 or i9
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8 or more
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100 GB
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Enabled
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* Having more memory will help running large studies
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** Large studies writing detailed risk results will use more disk space
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Other specifications for this version are as follows:
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Operating system
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64 bit Windows 8.1 or 64 bit Windows 10 or later versions with latest Windows Updates and Windows Security patches.
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Internet Browser
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IE 7.0x or later. This does not have to be set as your default browser, but you must have at least this version installed to run the program.
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Display
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1024x768 resolution or higher, 1920x1080 (recommended)
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Screen colour depth
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65536 (16-bit) and higher
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CPU
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See above
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Media
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DVD-ROM drive or internet connection
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Pointing device
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MS Mouse or compatible
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Video card
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Any good video card and screen supporting 1920x1080 with latest video driver installed. For Safeti, any CUDA 11 compatible video card recommended with “compute capability 5.0” or higher. See https://en.wikipedia.org/wiki/CUDA for more information
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Microsoft Excel
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Phast, Safeti Lite, Safeti and Safeti-NL: require Excel only if using import from and export to Excel. Safeti Offshore: requires Excel
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Microsoft Access
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Safeti Offshore: requires Access
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Citrix, Microsoft Hyper-V, Oracle VirtualBox, VMware virtualisation tools are not supported.

What is a QRA?

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A QRA is a quantitative risk assessment, or a quantitative risk analysis. It is a formal and systematic method using measurable, objective data to determine an asset’s value, the probability of loss and other associated risks.

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