1 / 54

Fire Safety Management on Special Hazards A Discussion on the Use of Predictive Methods to form Rescue and Mitigation

Some Key Questions in Relation to Fires. What is the risk of a fire?What can burn?If a fire how will it develop, in space and time?If people are present in the fire environment how will they react?How can people escape and be rescued?What about thermal radiation?Will there be poisonous gas

marv
Download Presentation

Fire Safety Management on Special Hazards A Discussion on the Use of Predictive Methods to form Rescue and Mitigation

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

    2. Some Key Questions in Relation to Fires What is the risk of a fire? What can burn? If a fire – how will it develop, in space and time? If people are present in the fire environment – how will they react? How can people escape and be rescued? What about thermal radiation? Will there be poisonous gases? Will there be a structural collapse? Where and when?

    3. We Know Something About Hazardous Fires The fire evolution in time is faster than we would expect The thermal radiation is stronger and the temperature higher than expected People will panic Numerous persons may die or be seriously injured Many of these will die due to poisonous gases or lack of oxygen Structural damages may be extensive

    4. To safeguard people, inventories and constructions We need: Strategy for fire prevention and mitigation Strategy for evacuation and rescue of people for the specific environment Which is “Automatic” That means “Predesigned”

    5. To Pre-design Fire Mitigation, Evacuation and Rescue Measures, We Need to Predict for the Specific Environment Fire evolution in space and time And the mitigating effects for a number of fire scenarios

    6. Requirements for the Predictive Technology It must be flexible and adaptable to the specific environment and scenario It must be general, that means based on the fundamental laws of physics and chemistry It must be validated

    7. In the following I will discuss some of the previous aspects in relation to a CFD fire simulator KAMELEON FIREEX which has been developed during the last 30 years at the University in Trondheim, in an associate research organization SINTEF, and in the last years in our company, ComputIT

    8. Kameleon FireEx A Three dimensional transient fire simulator Kameleon FireEx is a finite volume CFD code Kameleon FireEx includes CAD import capabilities Kameleon FireEx is interfaced with the finite element structure response codes Fahts/ Usfos Kameleon FireEx includes detailed models for fire mitigation by water systems Kameleon FireEx is used for a large number of industrial analyses world wide Kameleon FireEx is developed with the partners Statoil, Total, ENI-group, Norsk Hydro, Conoco Phillips, Gaz de France, Ruhrgas and Sandia National Laboratories

    9. First a Few Words About The Modeling Principles We divide the space into small cells and Calculate the interaction between the cells by numerical mathematical methods

    11. In order to treat the details of the physics and chemistry we introduce SUBMODELS

    13. An Important Problem is to Treat the Combustion The EDDY Dissipation Concept of Magnussen is utilized It assumes that the reactions take place in small turbulence structures and That we can treat these structures as homogeneous reactors

    14. First a Few Pictures of Reacting Fine Structures Taken by LACER INDUCED FLUORESCENCE TECHNIQUE (LIF)

    17. Then the Modeling Concept

    20. The Basic Methods are Validated

    24. A Computed Fire Behaves Like a Real Fire

    26. The following 4 Pictures Demonstrate How Kameleon FireEx (KFX) Computations are Executed

    30. Kameleon FireEx Execution of Computation

    31. Video: Computed fire underneath large floating production platform Problem: Escape routes Visibility is monitored as a function of time for different routes

    33. Video: Computed fire in and underneath large offshore production platform Problem: Fire impact on structures Escape routes

    35. Video: Computed fire in a shaft of an offshore production platform Problem: Test of water sprinkler system to safeguard gas pipes

    37. Video: Computed fire in a production module Problem: Fire spread Heat loads to structure

    39. Video: Computed fire in separator confinement Problem: Effect of automatic released water from sprinklers

    41. Video: Computed fire spread in confinement with furniture Problem: Fire spread due to radiation

    43. Video: Computed fire spread between buildings Problem: Propagation of fire

    45. Video: Computed fire in road tunnel Problem: Investigation of the first phase of fire

    47. Video: Computed fire in road tunnel Problem: Effect of forced and natural ventilation on fire Effect of water from sprinklers

    49. Video: Computed fire due to gasoline spill in a garage underneath high rise building Problem: Fire escalation

    51. Video: Computed fire in garage of high rise building Problem: Fire effect on building

    53. Video: Fire in tower 1 of World Trade Center due to aircraft crash into building Problem: Fire evolution

    54. WTC demo

More Related