Risk analysis in corroded buried pipelines
Palavras-chave:
Risk analysis, corroded buried pipelines, structural reliabilityResumo
Transporting fluids such as oil and gas through corroded pipelines presents economic, human and
environmental risks. This work aims to make a qualitative and quantitative analysis of these risks, based on DNV-
RP-G101 (2010). To measure it, it is necessary to analyze the failure probability through structural reliability
methods. Programming was made using MatLab software. For the use of the FORM and Pure Monte Carlo,
statistical data of random variables such as thickness and diameter of the pipe, internal pressure and defect depth
are used. The failure function is defined here by the difference between the failure pressure and the acting pressure
in the pipeline. For this, the failure pressure is calculated applying the method proposed by the practical
recommendation manual, the DNV-RP-F101 (2015). In possession of the failure probabilities, which are obtained
in the reliability methods, it is made the risk analysis of the buried corroded pipelines. Therefore, it is possible to
analyze and compare results obtained in this analysis, aiming a greater safety with less cost.
