Assessment of Materials in Ageing Offshore Structures

Dr.John V. Sharp has over 40 years experience in the offshore industry. He was initially responsible for managing a portfolio of safety research projects funded by the Department of Energy. This included being chairman of the Management Committee for the jointly funded industry and government’s Concrete in the Oceans research programme. He was also Secretary of the Steering Committee for the UK Offshore Steels Research programme. He subsequently held a senior position in the Offshore Safety Division of UK Health & Safety Executive with responsibility for their multi-million pound research programme. His special interests are in structural integrity, inspection, repair and life extension. He has carried out consultancy work for a number of organisations  including the  Petroleum Safety Authority  in Norway and the offshore industry.He is presently Visiting Professor at Cranfield University where he has been involved in lecturing and teaching on both offshore oil and gas and marine renewables. He was a Commissioner for the Alderney Commission for Renewable Energy with special interests in tidal energy. He is Chairman of the Society of Underwater Technology’s Committee on Marine Renewable Energy. He has published over 100 papers on offshore integrity and is a co-author of a book published by Wiley in 2019 on Ageing and Life Extension of Offshore Structures. He is also the lead author of a book on Inspection and Repair of Offshore structures published by Wiley in 2021. John Wintle is a consultant mechanical engineer and a recognised international technical authority in the field of asset life management, particularly of offshore structures and pressure systems in the energy sectors. After over 25 years as a Technology Fellow and Consultant Engineer for TWI Limited (The Welding Institute), John Wintle is now an independent consultant combining consultancy with other professional appointments. He continues to advise the offshore oil and gas industry and regulators and is a Contributing Expert to and the UK Technical Advisory Group on Structural Integrity.His many reports and publications on the structural integrity and life extension of ageing assets include the Energy Institute Guidance on Life Extension of Offshore Installations and the UK Health and Safety Executive (HSE) Research Report 509 on the Management of Plant Ageing and reports for HSE and the Petroleum Safety Authority Norway on Life Extension of Offshore Structures. He was a keynote speaker at the launch of HSEs Key Programme 4 on Ageing and Life Extension and peer reviewer of the book on Ageing and Life Extension of Offshore Structures published by Wiley (2019). He often gives courses on structural integrity and lectures at the University of Strathclyde where he is a Visiting Professor.

• 1.Introduction to Ageing of Materials.- 2. Offshore Structures.- 3. Steel Material Types in Offshore Structures.- 4. Steel Joining Methods and Joints.- 5. Steel Materials After Fabrication.- 6. Steel Materials Degradation and Remediation.- 7. Cementitious Materials in Offshore Structures.- 8. Cementitious Materials – Degradation, Detection.- 9. Other Metallic and Non-Metallic Materials.- 10. Assessment of Materials Integrity During Life Extension.- 11. Conclusions and Future Possibilities.- 12. Appendix - Case Studies.