An information entropy-based risk assessment method for multiple-media gathering pipelines

Abstract

Upstream unrefined petroleum resources and complex operating environments pose a significant threat to the integrity and safety of gathering pipelines. In this work, we proposed a novelty risk assessment method for gathering pipelines. Specifically, the historical failure data were used to develop the fishbone diagram of hazard factors and quantitatively analyze the primary indexes of internal corrosion failure. The risk assessment method was established combined the KENT method and information entropy theory, including models of failure probability and failure consequence coefficient. Subsequently, The welding institute (TWI) risk classification method was adopted to develop the risk classification calculation method for different areas, combined with the area-level safety design coefficient. Finally, the proposed method was applied to 81 gathering pipelines. Research results showed that the risk assessment method proposed in this paper could meet the real safe operation of gathering pipelines, improving upstream energy security.

Impact of flooding events on buried infrastructures: a review

“…Corrosion, particularly on the outer surfaces, is a leading factor contributing to the failure of pipelines (Dai et al, 2017;Zhao et al, 2018;Łaciak et al, 2020;Qin et al, 2022;Hussein Farh et al, 2023). Floodwaters contain a significant amount of pollutants and aggressive contaminants, often harmful or toxic.…”

“…These severe events led to the loss of 492 lives and had substantial economic repercussions in the affected regions. According to multiple studies, the frequency and magnitude of flooding events are expected to increase all over the world in the coming decades as the rainfall intensity increases (Prein et al, 2017;Ali et al, 2019;Neri et al, 2020;Swain et al, 2020;Tabari, 2020;Ebi et al, 2021;Li Z. et al, 2022). Prein et al (Prein et al, 2017) examined the potential patterns, particularly in the context of the Mesoscale Convective System (MSC), discussing an anticipated 15%-40% rise in maximum rainfall rates, coupled with expanded regions affected by heavy precipitation, which could lead to an up to 80% increase in MCS precipitation volume.…”