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October 31, 2017 / Fari Mahdavi
Category: Research Update 

Research Update October 2017

During the July-September 2017 quarter, the Energy Pipelines CRC had 22 active research projects across its four research programs. In this period eight new research reports were released (see page 9 of this newsletter); three projects were finalised and two new projects commenced. More details on finalised and commenced projects are as follows:

Under program 1, project RP1-06 ‘Cracking in Polyethylene Pipelines’ was completed in September by Deakin University researchers. The final report addresses deficiencies of using conventional test methods on aged pipes and proposed new improved test methods. Moreover, the most suitable techniques for characterising long-term performance of polyethylene (PE) pipes are presented in the final report of this project.

In this quarter, the team at Deakin University completed project RP6.2-03 , titled ‘Understanding SCC initiation on Gas Pipelines’. The outcomes of this research provide an understanding of the role of mill scale and rust on development of stress corrosion cracking (SCC) of steel pipes. In addition, the research determined the degree of SCC susceptibility to occur on mill scale- and rust-free pipe surfaces in certain environmental conditions.

Under program 3, the Atteris team working on research project of RP6.3-11 ‘Offshore Pipelines Decommissioning Guideline’ completed the final reports. This study, included a desktop review and an engineering guideline for offshore pipelines decommissioning. The guideline presents a comprehensive process for the evaluation, planning and implementation of offshore pipeline decommissioning projects that will align with international, national and state legislation and regulation; as well as requirements of the regulatory authorities.

Project RP6.2-05: ‘High Voltage Holiday testing of Dual Layer FBE’ commenced in late July 2017. The research team at Deakin University received the equipment, coated pipe, and samples of different dual layer fusion bonded epoxy (FBE) coatings to proceed with the investigation of allowable holiday testing voltage that dual layer FBE coating can be subjected to when exposed to moisture.

A new project titled ‘Elimination of PWHT for In-service Welding’ (RP6.3-12) commenced in August 2017. This research team in Wollongong University and the Australian Nuclear Science and Technology Organisation (ANSTO) will study the many different code thickness limits above which the post weld heat treatment (PWHT) is required. The research also considers elimination of PWHT in some cases by evidence of the absence of hydrogen assisted cold cracking (HACC), examination of microstructure and hardness, and measurements of residual stress.

During this quarter several industry advisor/user group meetings were held at Melbourne and Sydney, including kick-off meetings for projects RP6.2-05 and RP6.3-12. Energy Pipelines CRC teams also discussed the ongoing research and testing activities in National Facility for Pipeline Coatings (NFPCA) during a meeting with the facility manager at Deakin University.

Further details on this quarter’s activities can be found in the September 2017 quarterly research progress report that is now available on the members section of on the Energy Pipelines CRC website.


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