Issue 76 of the FABIG Newsletter now available for download!

New FABIG Newsletter available

We are pleased to inform you that the 76th edition of the FABIG Newsletter is now available to FABIG Members on the FABIG website.

All FABIG Newsletters are available here.

This issue comprises the following articles:

  • Editorial: 'Let's bring safety to the field', P. Hoorelbeke - TOTAL
  • Review of the Technical Meeting which covered 'Developments in Fire & Explosion Engineering for a Hydrogen Economy', T. Skjold1, V.C. Madhav Rao2, J. Wen2, S. Jallais3, G. Vannier4, O.R. Hansen5 and A. Huser6 - 1Gexcon, 2University of Warwick, 3Air Liquide, 4SCI, 5Lloyd's Register and 6DNV GL
  • Review of the Technical Meeting which covered 'Fire & Explosion Hazards caused by Spray Releases', P. Lees1, G. Vannier2, S. Pabby1, O.R. Hansen3, B.E. Vembe4, I. Fossan4 and T. Evanger4 - 1Health and Safety Executive, 2SCI, 3Lloyd's Register, 4DNV GL
  • Summary of the HYSEA project, T. Skjolda,j, M. Lucasa, H. Hiskena, G. Atangaa, S. Lakshmipathya, L. Bernarda,g, K. van Wingerdena, J. Wenb, V.C. Madhav Raob, A. Sinhab, M. Carcassic, M. Schiavettic, T. Pinic, J. Snoeysd, A.G. Hanssene, C. Wangf, S. Jallaisg, E. Vyazminag, D. Millerh and C.R. Bauwensi - aGexcon, bUniversity of Warwick, cUniversity of Pisa, dFike Europe, eImpetus Afea, fHefei University of Technology, gAir Liquide, hAir Products, iFM Global, jUniversity of Bergen
    This article summarises the main results of the HySEA project 'improving Hydrogen Safety for Energy Applications through pre-normative research on vented deflagrations'. A large number of experiments were performed in containers and smaller enclosures with representative obstacles to provide data for the validation of empirical and semi-empirical correlations as well as computational fluid dynamics (CFD) and finite element (FE) models developed as part of the project for prediction of overpressure generated in vented hydrogen deflagrations as well as structural response. Relevant project results were communicated to the standardising committee for EN 14994 (European standard on hydrogen explosion venting mitigation systems).
  • A Simple model for estimating peak pressure in vented explosions of hydrogen and hydrocarbons, A. Sinha and J.X. Wen - University of Warwick
    This article presents a simplified model for the prediction of overpressure from vented explosions for various gases, which only has one equation comprising four parameters. Two of these parameters depend on fuel properties and can therefore be tabulated. The other two parameters are simple functions of enclosure and obstacle geometry and are relatively easy to compute. The model was found to be either more accurate than or comparable to other existing models, and was validated against data from experiments involving obstacles, initial turbulence and mixture stratification.
  • Formation of mach-stem and DDT in gas explosions behind a single obstacle in a channel, K. Vaagsaether, A.V. Gaathaug, L. Bjarnason, D. Bjerketvedt - University of South-Eastern Norway
    This article presents a study the aim of which was to show how the formation of the initial shock and subsequent Mach-reflection from a gas explosion in a channel with one obstacle causes deflagration to detonation transition (DDT). For this purpose, high-speed schlieren images together with pressure records were used to identify the flame propagation leading up to either DDT or flame-shock coupling in hydrogen-air mixtures under atmospheric conditions.
  • On the surfacing mechanism of bubble plumes from subsea gas release, J.E. Olsen and P. Skjetne - SINTEF
    This article describes a study of the surfacing mechanism of an ocean plume caused by a subsea gas release using computational fluid dynamics (CFD). The resulting surface rate and flux were found to be fluctuating, and although it is possible to fit a time-averaged surface flux profile to a Gaussian profile, a perfect fit cannot be achieved. It is shown that two different procedures for quantifying the Gaussian profile yields to two different sets of Gaussian coefficients, which may be an issue for subsequent risk assessment calculations.

To access our Publications & Videos on the FABIG website:

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Finally, we would like to remind you that you can now follow FABIG on Twitter for regular updates on fire & blast related news.

Published: 27/09/2019 17:44:14
Last Modified: 27/09/2019 17:50:15

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