Structural Response of Offshore Blast Walls under Accidental Explosion

Abstract:

Adequate blast resistant barriers are requisite to protect personnel and critical systems from the consequences of an accidental explosion and subsequent fire. Many of the blast walls currently installed in offshore structures were designed using simplified calculation approaches like Single Degree of Freedom models (SDOF) as recommended in many design guidelines. Over simplified and idealised explosion load used for response calculation and design of blast wall can lead to inadequate or overdesign of offshore blast walls. Due to lack of presence of a well-accepted design guidelines supported by extensive study, the protection provided by the conventional blast walls for offshore structures can be inadequate. In-depth understanding of structural response of blast walls under different blast loading can provide better design practice of blast walls for adequate protection. In this study, structural responses of conventional offshore blast walls were investigated. A computation fluid dynamics (CFD) approach was used to predict effect of different explosions on the barrier walls and non-linear finite elements analyses were performed to study the behaviour of the blast-loaded walls under different explosions. Effect of different parameters related to blast wall and accidental explosions were investigated to gain detail understanding of structural behaviour of typical steel blast wall.

• Periodical: Advanced Materials Research (Volume 1043)
• Pages: 278-282
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.1043.278
• Online since: October 2014
• Authors: Shaikh Atikur Rahman*, Zubair Imam Syed, John V. Kurian, M.S. Liew
• Keywords: Blast Loading, Non-Linear Finite Element Analysis, Offshore Blast Wall

References

[1] E. Pask, A. Palmer, and J. Miles, Breakup of the firewall between the B and C modules of the Piper Alpha platform — II. Analysis by finite elements and comparison with hand calculation, Engineering Failure Analysis, vol. 7, pp.311-322, 10/1/ (2000).

DOI: 10.1016/s1350-6307(99)00032-1

[2] J. Boh, L. Louca, and Y. Choo, Finite Element Analysis of Blast Resistant Structures in the Oil and Gas Industry, (2007).

[3] L. A. Louca, J. W. Boh, and Y. S. Choo, Design and analysis of stainless steel profiled blast barriers, Journal of Constructional Steel Research, vol. 60, pp.1699-1723, (2004).

DOI: 10.1016/j.jcsr.2004.04.005

[4] G. K. Schleyer, M. J. Lowak, M. A. Polcyn, and G. S. Langdon, Experimental investigation of blast wall panels under shock pressure loading, International Journal of Impact Engineering, vol. 34, pp.1095-1118, (2007).

DOI: 10.1016/j.ijimpeng.2006.05.006

[5] O. R. Hansen, P. Hinze, D. Engel, and S. Davis, Using computational fluid dynamics (CFD) for blast wave predictions, Journal of Loss Prevention in the Process Industries, vol. 23, pp.885-906, 11/ (2010).

DOI: 10.1016/j.jlp.2010.07.005

[6] A. C. van den Berg, "BLAST": A compilation of codes for the numerical simulation of the gas dynamics of explosions, Journal of Loss Prevention in the Process Industries, vol. 22, pp.271-278, 5/ (2009).

DOI: 10.1016/j.jlp.2008.07.004

[7] A. Qiao and S. Zhang, Advanced CFD modeling on vapor dispersion and vapor cloud explosion, Journal of Loss Prevention in the Process Industries, vol. 23, pp.843-848, 11/ (2010).

DOI: 10.1016/j.jlp.2010.06.006