Nonmetallic Pipelines in Coarse Slurry Services: Challenges and Lessons Learned

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Nonmetallic Pipelines in Coarse Slurry Services: Challenges and Lessons Learned

Nonmetallic Pipelines in Coarse Slurry Services: Challenges and Lessons Learned
Nonmetallic Pipelines in Coarse Slurry Services: Challenges and Lessons Learned

In contrast to traditional oil industries, the oil sands sector experiences severe wear-related problems due to the inherently abrasive and corrosive nature of the mined oil sands. This wear affects the mining and extraction processes, causing rapid pipe wall loss in carbon steel slurry pipelines over a relatively short period. To extend service life and enhance system reliability in slurry transport systems, nonmetallic piping solutions like elastomer-lined pipes and rubber hoses have been deployed. With implementation of product & manufacturer qualification program and development of weldable joint technologies, carbon steel pipelines have been successfully upgraded with nonmetallic products. However, the adoption of these new materials has also presented new challenges. Catastrophic delamination incidents in elastomer-lined pipelines have led to unexpected shutdowns, disrupting operations and impacting production. Localized liner wear called "leading-edge wear" at pipe joints caused accelerated degradation in adhesion and contributed to delamination. To ensure reliable operation of nonmetallic pipelines, advanced condition monitoring technologies, including RFID-based wear tracking systems, have been developed. Additionally, replaceable insert ring and advanced repair technology using anchors were developed to address the leading-edge wear issue at pipe joints.

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