Dynamic structural response characteristics of new concept blast walls under hydrocarbon explosions

Abstract

Offshore installations activities entail the hazard of explosion accidents with potentially severe consequences to safety of workers, integrity of system, pollution of the environment, and economic losses. Blast walls are generally used for the purpose of reducing the explosion consequences. This study introduce a new concept of blast wall (perforated blast wall) which can disrupt loaindg pressure during the explosion. A dynamic finite element analysis was performed to investigate the effects of the geometric characteristics on the performance of perforated blast walls. A series of computations were performed varying with opening size, plate thickness and opening layout associated with Blockage Ratio. A proposal formula was derived as a function of those design parameters for easily expecting the dynamic structural response characteristics. Keywords Explosion loads, perforated blast wall, dynamic structural analysis, nonlinear finite method Dynamic structural response characteristics of new concept blast walls under hydrocarbon explosions Jung Min Sohn et al.

Condition Assessment Techniques for Aged Fixed-Type Offshore Platforms Considering Decommissioning: a Historical Review

“…In the similar manner, collision (Youssef et al 2016;Faisal et al 2017) has also been studied. Various studies have also been conduced to propose empirical formulations in terms of blast wall due to explosion (Kim et al 2018c;Sohn and Kim 2019), ultimate strength of Figure 12 Resistance distribution decay by time (Melchers 1999) plate (Paik et al 2004;Kim et al 2018d), stiffened panel (Kim et al 2017a(Kim et al , 2019a(Kim et al , 2020d and hull girder (Paik et al 2013;Baek et al 2018Baek et al , 2019, fatigue life prediction of offshore riser (Kim et al 2018a), current profile simplification (Kim et al 2019b) and many others. Many of them utilised data analysis tool such as regression analysis.…”