Innovations in subsea flexible pipe technology

Joint industry project

Pioneering the next-generation advancements in subsea flexible pipe technologies, our joint industry projects (JIPs) delve deep into inspection tools, life expectancy predictions under CO2-SCC conditions, and tensile armour wire testing in CO2-SCC settings.

Development of field inspection tool for flexible pipes

A groundbreaking JIP seeks to enhance riser system integrity management by establishing best practices for field inspections. Addressing the alarming rate of conventional flexible pipe failures, this JIP aims to qualify a specific non-destructive testing (NDT) technique and develop an ROV-ready solution. Organized in three phases, the project will first undertake a literature review and onshore testing, followed by offshore testing, and finally culminate in in-field inspections. By the project's end, a comprehensive guideline will be formed, setting the standard for future subsea NDT techniques.

For more detailed information about this joint industry project: download the flyer.

Project timeline
The estimated duration of this full project is 36 months, expected to start in 2024. Phase I has an estimated duration of 6 months. Phase II has an estimated duration of 12 months. Phase III has an estimated duration of 18 months.

 

Lifetime prediction for flexible pipes under CO2-SCC conditions

With a rise in instances of stress corrosion cracking (SCC) on pressure and armour wires in high CO2 service pipelines, this JIP sets out to devise a probabilistic model. By merging DNV's recent developments in external crack growth rate predictions with fresh research, this project aims to determine a safe operational window for pipes in CO2-rich atmospheres. Through combined crack propagation tests and model development, the industry will gain clarity on flexible pipe lifetimes under CO2-SCC conditions.

For more detailed information about this joint industry project: download the flyer.

Project timeline
The estimated duration of this project is 24 to 36 months, expected to start in 2024.

 

Small-scale testing qualification for tensile armour wires in CO2-SCC environments

This JIP undertakes a methodical approach to establish a robust test matrix for tensile armour wires' susceptibility to CO2-SCC in flexible pipelines. Drawing from DNV's extensive research, the project aims to craft a detailed guideline for small-scale testing. This initiative will fortify the industry's understanding of material behaviour, heighten the safety measures of flexible pipes in CO2 environments, and aid in managing CO2-SCC risks comprehensively.

For more detailed information about this joint industry project: download the flyer.

Project timeline
The estimated duration of this project is 3 years, expected to start in 2024.

5/14/2024 7:50:00 AM

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Vanessa Dreilich

Vanessa Dreilich

Materials Technical Leader

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