Assessment of lightning impact frequency for process equipment

Amos Necci, Giacomo Antonioni, Valerio Cozzani, Elisabeth Krausmann, Alberto Borghetti and Carlo Alberto Nucci

Reliability Engineering and System Safety, 2014, vol. 130, issue C, 95-105

Abstract: Fires and explosions triggered by lightning strikes are among the most frequent Natech scenarios affecting the chemical and process industry. Although lightning hazard is well known, well accepted quantitative procedures to assess the contribution of accidents caused by lightning to industrial risk are still lacking. In the present study, a quantitative methodology for the assessment of the expected frequency of lightning capture by process equipment is presented. A specific model, based on Monte Carlo simulations, was developed to assess the capture frequency of lightning for equipment with a given geometry. The model allows the assessment of lay-out effects and the reduction of the capture probability due to the presence of other structures or equipment items. The results of the Monte Carlo simulations were also used to develop a simplified cell method allowing a straightforward assessment of the lightning impact probability in a quantitative risk assessment framework. The developed approach allows an in-depth analysis of the hazard due to lightning impact by identifying equipment items with the highest expected frequency of lightning impacts in a given lay-out. The model thus supplies useful data to approach the assessment of the quantitative contribution of lightning-triggered accidents to industrial risk.

Keywords: Major accident hazard; NaTech; Lightning hazard; Lightning capture frequency; Quantitative risk assessment (search for similar items in EconPapers)
Date: 2014
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (8)

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Persistent link: https://EconPapers.repec.org/RePEc:eee:reensy:v:130:y:2014:i:c:p:95-105

DOI: 10.1016/j.ress.2014.05.001

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