A DCAMM seminar will be presented by
Senior Principal Specialist Erling Østby
DNV, Høvik, Norway
Abstract:
The energy transitions will call for the need for transporting large amounts of CO2 and H2, and pipelines represent a viable option in this respect. However, the transport of the above-mentioned media poses some challenges for regular C-Mn pipelines that must be solved to ensure safe and cost-effective solutions. Two of these are discussed in this talk. The first is considering the topics of running ductile fracture (RDF) in dense phase CO2 pipelines. There is a challenge to understand the necessary requirements to obtain a crack arrest in such pipelines. The talk will present some of the general challenges of the RDF problem, and look a bit more into the question of understanding crack path oscillations and the possible importance of this. The second part is focusing on the challenge of ensuring integrity against leakage as a consequence of growth of defects in hydrogen pipelines. Some general observations regarding the impact of H2-environments on the mechanical properties of C-MN steels will be presented. The main focus is directed to the question on how to define a criterion for when defects will be stable under constant loading.
Danish pastry, coffee and tea will be served 15 minutes before the seminar starts.
All interested persons are invited