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Evaluation of Blast Pressure Generated by an Explosion of Explosive Material  

Yoon, Yong-Kyun (세명대학교 소방방재학과)
Publication Information
Explosives and Blasting / v.36, no.4, 2018 , pp. 26-34 More about this Journal
Abstract
Explosions of vapor cloud formed due to the leakage from installations with flammable fuels have often occurred in Korea and foreign countries. In this study, TNT equivalency method and Multi-Energy method for vapor cloud explosion blast modelling are described and demonstrated in a case study. As TNT equivalency method is simple and direct, it has been widely used for modelling a vapor cloud explosion blast. But TNT equivalency method found to be difficult to select a proper correlation between the amount of combustion energy produced from the vapor cloud explosion and the equivalent amount of TNT to model its blast effects. Multi-Energy method assumes that the strength of vapor cloud explosion blast depends on the layout of the space where the vapor cloud is spreading. Strictly speaking, the explosive potential of a vapor cloud is dependent upon the density of the obstructed regions. In this study, Flixborough accident are analyzed as a case study to assess the applicability of TNT equivalency method and Multi-Energy method. TNT equivalency method and Multi-Energy method found to be applicable if coefficient of TNT equivalency and coefficient of strength of explosion blast are selected properly.
Keywords
Vapor cloud explosion; TNT equivalency method; Multi-Energy method; Coefficient of TNT equivalency; Coefficient of strength of explosion blast;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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1 권상기, 2017, 폭발파에 의한 폭발압력곡선 경험식에 관한 연구, 화약.발파(대한화약발파공학회지), Vol. 35, No. 1, pp. 1-17.
2 윤용균, 2016, 폭발에 따른 최대과압 및 충격량 평가, 화약.발파(대한화약발파공학회지), Vol. 34, No. 4, pp. 28-34.
3 Assael, M.J. and K.E. Kakosimos, 2010, Fires, explosions, and toxic gas dispersions, CRC Press, pp. 149-206.
4 CPR, 2005, Methods for the calculation of physical effects, CPR 14E, Chap. 5, pp. 5.1-5.81.
5 Eckhoff, R.K., 2016, Explosion Hazards in the Process Industries, Elsevier Inc., pp. 23-30, 421-432.
6 Karlos, V. and G. Solomos, 2013, Calculation of blast loads for application to structural components, JRC Technical Reports, pp. 4-23.
7 Sochet, I., 2010, Blast effects of external explosions, 8th Int. Sympo. on Hazards, Prevention, and Mitigation of Industrial Explosions, pp. 1-32.
8 Van den Berg, A.C., 1985, The Multi-Energy method; A framework for vapour cloud explosion blast prediction, J. of Hazardous Materials, No. 12, pp. 1-10.
9 Van den Berg, A.C. and A. Lannoy, 1993, Methods for vapour cloud explosion blast modelling, J. of Hazardous Materials, No. 34, pp. 151-171.