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JIP Aims for Life Extension Road Map for Top Tension Risers

2H Offshore

2H Offshore launched a joint industry project (JIP) named the tensioned riser assessment for continued service (TRACS). In the project, 2H Offshore will work with Anadarko, Shell, and BP to develop top tension riser (TTR) reassessment and life extension guidance. 

The project’s objectives are to develop a roadmap for assessing the issues relating to the fitness for service of TTRs and provide recommendations for the mitigation of potential issues. The JIP will then use data from participant-supplied case studies to validate the methodology and provide documented examples for future guidance. The work is expected to be completed by the end of May.

Although the case studies are focused on the US Gulf of Mexico, the final guidance will be applicable as best practice anywhere in the world. 

Currently, there is no single guideline in the US that addresses TTR reassessments and life-extension programs in detail. The JIP will bridge the Bureau of Safety and Environmental Enforcement and American Petroleum Institute frameworks and achieve industry consensus on the analysis and inspection data and documents required to assess the feasibility of an extended service life. 

Fatigue, corrosion, and change of service will be addressed, and recommendations for mitigation measures for each issue will be developed that take environmental and operational histories into account. The latest refined analysis, inspection, and monitoring tools will be evaluated to help provide an accurate assessment of equipment condition that is a key component of continued service assessment programs.

Sandeep Jesudasen, subsea riser engineering leader at BP, said, “As deepwater facilities age, the industry needs to look at continued service assessment and life extension to facilitate sustained safe production. We recognize the TRACS JIP as one such industry collaboration to develop good practice guidance for fitness-for-service assessment and life extension of TTRs.”

“We are very pleased to be working with BP, Anadarko, and Shell as we lead the effort for intelligent reassessments of TTRs and invite more interested industry partners to join the JIP,” added TRACS project manager, Dhyan Deka, 2H Offshore.

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