The principle of redundancy in the analysis of pipeline integrity has taken on particular significance in recent years, thanks to the integration and relating of information obtained from various sources, which include, smart pig runs, visual right-of-way inspections and monitoring of the land and the pipeline. This document contains information related to the monitoring and analysis prior to emergency actions taken in the case study presented, located in northeast Colombia, where the effects of mining activity and excess rain during the winter period of 2010–2011 combined. The integrity information available with regard to background, visual right-of-way inspection, threat and risk assessments, direct monitoring of the pipeline and the analysis of deformation by bending, which Ecopetrol’s Office of Vice-president for Transportation and Logistics (VIT) made at the site, was taken into account. In addition, it includes a description of the interrelationship of such information, the findings in the activities conducted during the attention to the site, for the purpose of identifying the evidence related to external loads exerted by the land in the soil-pipeline interaction, which made it possible to better determine the proposed plan of action. The redundancy in the analysis of this information makes it possible to more accurately determine the root cause of the problem, the interaction between the phenomenon (external load - geotechnical event) and the pipeline, by which attention was directed in the field and action plans were obtained that better mitigate the threat and guarantee more safe and reliable operation.
Usually, the definition of geotechnically homogeneous zones is established through the analysis of information on a regional (and even national) scale of those characteristics that define the topographic, geological, climatic, and land use conditions by categorizing them and applying algorithms of interaction between these variables. However, in technical literature and in technical reports of state entities that manage natural hazards, new advances are being made in the determination of other aspects or variables that detail the condition of geotechnical susceptibility; at the same time, nowadays there are technological tools for the massive analysis of information and its spatialization. This article presents a new approach to the definition of geotechnically homogeneous zones using these technological tools. A comparison is made against the conventional definition.
About 20% of Cenit’s hydrocarbon transport infrastructure are located on mountainous terrain susceptible to effect of geohazards. There is an integrity management plan based on inspection, monitoring and mitigation activities; however, the occurrence of accidents triggered by geohazards has caused emergencies with effects on environment receiver and on operation of transport systems This paper presents, through management some of these accidents, good practices identified, learning in terms of prevention, preparation and response to emergencies and identification of priorities and gaps, in order to strengthen continuous improvement of the geohazards integrity management strategy.
In recent years, the Colombian government has strengthened its legislation moving towards a disaster risk management system (Law 1523 in 2012) and has established guidelines on the role of public and private entities (decree 2157 in 2017) when defining the structure of disaster risk management plans. This paper presents the advancements on Natech risk management implementation in Cenit (major Colombian pipeline operator of hydrocarbons transport), to identify areas of potential disaster based on the application of its geohazards assessment model that considers prevention specific elements and consequence analysis.
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