FAQs for Phast and Safeti
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AnswerPhast and Safeti are available in English, Spanish and Chinese. |
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AnswerGeneral requirements Operating system: 64 bit Windows 8.1, 64 bit Windows 10 or 64 bit Windows 11 or later versions with latest Windows Updates and Windows Security patches.
Citrix, Microsoft Hyper-V, Oracle VirtualBox, VMware virtualisation tools are not supported. Phast requirements
Typical use case: Modelling a large number of scenarios per study (e.g. as input to QRA, FERA, etc)
Typical use case: Running CFD calculations
Safeti requirements
Typical use case: Performing QRA/FERA for large sites such as refineries or multiple pipelines
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AnswerThe user interface is built using C# WPF targeting .NET Framework 4.8. Risk Results are stored using Microsoft SQL Server. The calculation models are mainly developed in C++ or Fortran. |
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AnswerYes, DNV offers a wide range of training courses, available here. |
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AnswerAll versions of Phast and Safeti can be downloaded via our Knowledge Centre. The Knowledge Centre also provides release notes, detailing updates to each version. |
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AnswerIn the context of consequence modelling, a free-field is an open environment without any obstacles or undulating terrain to affect dispersion, fires or explosions. Consequence calculations in this environment are simpler than those where obstacles or undulating terrain need to be taken into account. The duration of a free-field modelling calculation for a single scenario will typically be of the order seconds. Where it is important to consider obstacles or undulating terrain, computational fluid dynamics (CFD) is the preferred solution. The duration of the calculations, being significantly more complex, will typically be of the order minutes to hours.. |
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AnswerA QRA is a numerical method for predicting the consequences and risk associated with hazardous facilities or operations. More details are provided in this webinar. |
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AnswerOur QRA solutions focus on fatality risk (individual and societal). Our QRA software produces metrics which can also be used to assess environmental risk, asset risk and financial risk. |
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AnswerPhast/Safeti is used typically in the following industries:
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AnswerPhast/Safeti is used typically for the following asset types:
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AnswerOur consequence and risk analysis solutions can be used in all stages of an asset's lifecycle. Often, the earlier consequences and risks are understood, the more valuable the insights prove to be. |
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AnswerPhast is typically used in the following applications:
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AnswerIn addition to having the applications of Phast, Safeti is typically used in the following applications:
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AnswerPhast/Safeti calculates the discharge, dispersion and flammable and toxic effects associated with loss of containment scenarios. It can be used to model pool spreading and evaporation, fires (jet, pool and fireballs), explosions, BLEVE and toxic effects. |
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AnswerFor pressure vessels, Phast/Safeti is able to model instantaneous releases (e.g. catastrophic rupture) and continuous releases (e.g. leaks from pipework). For continuous releases, Phast/Safeti can model constant or time-varying release rates, fixed duration releases, short pipe releases (line rupture, disc rupture and relief valve). Further, Phast/Safeti has a user-defined source, giving full control for the users to define the source terms. In addition to the above, Phast/Safeti can model spills from atmospheric tanks and vent releases from the vapor space. |
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AnswerThe Multi-Component extension allows consequence modelling of hazardous multi-component two-phase releases into the atmosphere. To find out more about DNV's approach on two-phase multicomponent modelling, refer to "Modelling the Consequences of Hazardous Multi-Component Two-Phase Releases to the Atmosphere", H. Witlox, M. Harper et al (2005). |
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AnswerYes, Phast and Safeti can model toxic releases, including modelling of asphyxiation. DNV's Unified Dispersion Model (UDM) is used to determine the dispersion of a toxic material (or in the case of asphyxiation, any inert gas that reduces or displaces the oxygen concentration) over time, which will be used to determine the concentration of a material at a specific location in a given time. |
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AnswerYes, Phast has the capability to model hydrogen, carbon dioxide, nitrogen and ammonia releases. |
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AnswerYes, Phast/Safeti can model LNG and LPG releases. |
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AnswerPhast/Safeti can model "in-building" releases, where the build-up of concentration indoors and subsequent dispersion outdoors is modelled. Explosion effects inside the building are also presented. |
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AnswerTesting of the software includes: 1) Verification of the consequence models to ensure that the code correctly solves the associated mathematical model, 2) Validation of the results against experimental data, and 3) Sensitivity analysis by varying a large number of parameters to ensure overall robustness of the code. DNV has produced a document which describes the verification and validation process for the modelling of flammable and toxic releases. This can be made available upon request. |
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AnswerPhast and Safeti support import of shape files from Google Earth or other GIS. Consequence and risk contours can be exported shapefile (*.shp) for import into Google Earth or other GIS. Our product videos catalog has instructions for getting the most from Phast and Safeti's GIS. |
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AnswerWe offer a range of lease / subscription options from 1-day up to 3 years as well as perpetual. Lease / subscription options are available to purchase digitally using credit card or invoicing via our Veracity marketplace. Lease / subscription and perpetual options are also available by speaking to a sales manager. |
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AnswerWe offer the following types of licence:
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AnswerPhast/Safeti can be installed on your own PC or can be pre-installed on a virtual machine. Please go to our Veracity marketplace for more details. |
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AnswerIt is not possible to transfer an individual Phast license from one machine to another. We have other licence types (dongle and network) which support multiple users in an organization. |