GIRA Research | Gas Infrastructure Research Australia

P2-26-02: Inclined Cracking (SCC) in Legacy Gas Pipelines

Written by GIRA | Sep 2, 2026, 6:14:10 AM

Project Overview

This research project investigates the phenomenon of inclined stress corrosion cracking (SCC) in legacy gas transmission pipelines, with a focus on X65-grade steels commonly used in the 1970s and 1980s. The project aims to develop new methods for early detection, accurate sizing, and improved integrity management of these under-recognized threats. The outcomes will support safer, more targeted maintenance strategies across Australia’s ageing pipeline network. The first stage of this project is a literature review to consolidate existing knowledge from industry and academia, which will inform future work to understand susceptibility factors and provide recommendations for identifying and managing inclined SCC.

Project Details

Start / End Date: August 2026 - December 2026
Research Provider: Curtin University
Industry Partners: APA Group, Jemena, Santos, Rosen
Contact Information: For more information about this research, please contact Doug Proud (GIRA Research Manager)