Petrell Multi-Physics Simulation Consultancy Services

Petrell offers a wide range of consultancy services based on VessFire and Brilliant. We also offer consultancy services including design and engineering within fire safety design, technical safety and process systems safety. We perform consequence analyses, safety studies and HAZOPs. Our consultancy scope further includes third party reviews and verifications.

Multi-physics simulation services and tailor-made simulation systems

Brilliant is a CFD-code based on object technology for analysis of transient and stationary phenomena. Based on our unique general purpose computational fluid dynamics (CFD) system Brilliant, we offer simulation services within time-dependent multi-physics problems as well as development of tailor-made simulation systems.

Brilliant is used to simulate leakages, pool fires, jet fires, gas dispersion, ventilation issues, flaring and more. We also use Brilliant for simulation of fire tests of vessels, pipe work and flanges etc.

Flexible, accurate analysis of physical phenomenon

Brilliant’s unique features include coupled analysis of all relevant physical phenomena within flow, convection and stress – in one simulation, and on the same geometrical model. The grid is very flexible. The size of the elements might span from millimetres to kilometres within the same model.

Because of the modelling flexibility and the ability to accurately analyse numerous phenomena simultaneously, Brilliant constitutes a complete platform for developing numerical laboratories. See the link below for more details.

A selection of recent Brilliant analyses include:

  • Optimisation of layout and arrangement of offshore platform modules from a ventilation point of view
  • Location of F&G detectors
  • Fires in mines
  • LNG spill from road transportation
  • Fire integrity and fire protection of flanges

Brilliant has been verified through tests at SINTEF NBL (the Norwegian Fire Laboratory), and through comparisons with other tests and CFD systems.

Blow-down analysis of thermo-mechanical response

VessFire, a computer programme for the time-dependent non-linear analysis of thermo-mechanical response during blow-down of process segments and process equipment, is probably the only tool available in the market that fully complies with the simulation approach addressed in ISO 23251:2006.

VessFire’s application areas include:

  • Identification of the most unfavourable leakage rate from a fire and blow-down point of view
  • Blow-down systems design (orifice sizing, multiple BDV arrangements)
  • Fire integrity of process vessels and piping
  • Optimisation of pipe specifications / schedules
  • Identification of the need for, and the extent of passive fire protection
  • Process system sectionalisation

VessFire uses Brilliant as its kernel. The user interface is designed to welcome users unfamiliar with CFD. See the link below for further details.

VessFire is verified through tests at SINTEF NBL and through benchmarking with several process simulations and blow-down analysis tools. Recent VessFire analyses performed by Petrell on behalf of clients include:

  • Gjøa field development
  • Siri field development
  • Shah Deniz field development
  • Modifications at Norne, Åsgard, Zeebrugge and Kalstø


Our clients include: BP, ConocoPhillips, Bredero Shaw, FPSOcean, the Norwegian Petroleum Safety Authority (PSA), Reinertsen Engineering, Fabricom, StatoilHydro, Scandpower, Aibel, Gas de France, Hyundai Heavy Industry and Rambøl.

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Press Release

VessFire Course

Petrell is to hold a VessFire course for new users on 20 and 21 August 2013, taking place in Trondheim, Norway.

White Papers

VessFire: Depressurisation and Fire Safety of Process Facilities

VessFire is the leading tool for blowdown analysis of process facilities with or without fire exposure. It simulates depressurisation of shutdown segments with both vessels and pipework.

Petrell AS

Olav Tryggvasons gate 40

NO-7011 Trondheim



+47 93 20 00 20 +47 73 80 55 01

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Press Release

19 June 2013

Petrell is to hold a VessFire course for new users on 20 and 21 August 2013, taking place in Trondheim, Norway.

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11 October 2012

National legislation and international standards, as well as company defined risk acceptance criteria, impose certain requirements on the design of process facilities regarding their ability to sustain a fire situation.

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20 June 2012

Petrell is holding a VessFire course for new users on the 27 and 28 August 2012 in Trondheim, Norway.

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13 January 2012

Petrell will hold a VessFire course for new users on 14th and 15th February 2012.

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23 August 2011

Petrell will hold a VessFire course for new users on 14-15 November 2011. The course will be held at Britannia Hotel in Trondheim. The course agenda will be: Day 1 Introduction to the subject Standards Blowdown calculation procedure

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2 August 2011

Petrell will be participating at this year's Offshore Europe conference in Aberdeen from the 6th-8th of September. You can visit us on stand 3E38. We are a part of the MIDNOR pavillion.

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2 May 2011

In connection with the opening of our office in Stavanger, Petrell held a conference lunch themed 'Simulation of Multi Physics Problems'. The lunch was held at iPark in Stavanger on 9 June from 11:30-12:30. Read more about the event at

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26 September 2010

Fire in process plants might occur for several reasons. In the past fire has caused huge damage as well as loss of life, economy and resources. Even in the best-operated process plant there might be small accidents. The difference between a minor event and a disaster is the ability to

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Regional Offices

Petrell AS

Olav Tryggvasons gate 40

NO-7011 Trondheim



Geir Berge (technical director) +47 93 20 00 20 +47 73 80 55 01

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