Fracture control assessment in the base metal and welded joint of a pipeline steel

Abstract

The present study evaluates the fracture behaviour of a pipe steel and compares the real scale pipeline assessment methodology (pipeline methodology) with the Guidance on Methods for Assessing the Acceptability of Flaws in Welded Structures (PD 6493). It is shown that the base metal is the toughest region and that the heat‐affected zone is the least tough zone, that both assessment methods do not give the same result for the base metal, and that plasticity at the crack tip can toughen the welded joint.

State-of-the-art review of fracture control technology for modern and vintage gas transmission pipelines

“…More recently, Mannucci and Demofonti [8] presented the ductile fracture propagation control methods particularly for X80 gas pipeline steels. In addition, Costa and Bastian [9] performed the fracture control assessment for base metal and weld joints of pipeline steel. Caraballo et al [10] and Cosham and Eiber [11] explored the fracture control technology for CO 2 transmission pipelines.…”