18 May : Part 1 Focus on ageing mechanisms, codes for life extension and strength and fatigue analysis for life extension
19 May : Part 2 Focus on SIM, inspection, monitoring and repair of ageing structures
Description
Many platforms in the Oil and Gas industry have been in production for decades and are reaching the limit of their design life. As they are still used in oil and gas production there is a need for life extension.
This course in 2 Parts will provide a brief understanding of the key ageing issues affecting structures in late life and in life extension and the main problem areas in providing assurance for structural integrity in the life extension phase. This includes recognizing the ageing factors, the relevant regulations and standards such as PSA regulation & HSE Safety Case regulation 14, ISO 19902, ISO 19901-9, NORSOK N-005 and NORSOK N-006. Further, a brief introduction to the assessment of ageing structures, analysis of ageing structures and integrity management of ageing structures, including inspection and repair, will be presented.
The course will be based on the book (included in the course fee!):
Ageing and Life extension of offshore structures, Wiley 2019. Authors: Ersdal, G., Sharp, J.V, Stacey, A.
Including also separate presentations as pdf.
Lecturers
Gerhard Ersdal
28 years’ experience in the offshore industry. Presently professor II at University of Stavanger and principle engineer at PSA (Ptil). Previously principle engineer at NPD and Multiconsult. Author and co-author of several papers on life extension of ageing offshore structures, and author of the book “Life extension of ageing offshore structures” published by Wiley. Member of the Norwegian expert committee for offshore structures. Co-author of several national and international standards on offshore Structures and structural integrity management.
John V. Sharp
Over 40 years’ experience in the offshore industry. Presently visiting Professor in Offshore Technology at Cranfield University. Previously senior position in the Offshore Safety Division of UK Health & Safety Executive, with special interests in inspection and structural integrity. Author and co-author of several conference papers on life extension of ageing offshore installations, and co-author of the book “Life extension of ageing offshore structures” published by Wiley. Has carried out studies for both PSA and HSE on life extension.
Arne Fjeldstad
received his master’s degree in 2003 and PhD in 2007 from the Norwegian University of Technology and Science. He currently holds the position as Principal Engineer in the DNV GL Offshore Structures section at Høvik, Norway. His main fields are verification and analysis of steel structures, reliability analysis, Risk Based Inspection planning (RBI), linear and non-linear finite element analysis and fracture mechanics analysis. As a fatigue expert he has also worked with a wide range of applications such as mechanical equipment, pipelines, risers and umbilicals, subsea applications and pressure vessels. He is involved in rules development and has contributed in the development of several standards.
Ole Tom Vårdal
Over 30 years experience in the offshore industry, and is currently CEO of AHPA (Asset Health and Probabilistic Analyses). He is an internationally recognized expert on structural analysis with a main focus upon fitness for service and lifetime extension of offshore structures, and has an in-depth knowledge of all aspects of the structural integrity management process. Ole Tom is a specialist in methods combining in-service observations and refined theoretical analyses and experience in how to implement the methods in normal operation.
Program 18 May: Part 1
09.00 Registration/Login
09.15 Introduction to ageing and life extension
• Failure statistics of ageing structures
• Ageing changes
• Design life and life extension
• Drivers for life extension
• Installation demographics
Lecturers Gerhard Ersdal and John Sharp
10.00 Relevant regulations, codes and standards
• Historic development in codes and standards
• Present safety principle for structures
• Current codes and standards
Lecturers Gerhard Ersdal and John Sharp
10.45 Coffee
11.05 Ageing factors: changes and hazards to life extension
• Main changes and hazards for life extension
• Corrosion, fatigue, accidental damage, foundation issues, subsidence, extreme weather etc
• Non-physical and technological changes
Lecturers Gerhard Ersdal and John Sharp
12:15 Lunch
13.15 Assessment of ageing structures
• Assessment procedures
• Hazard identification
• Development of inspection strategy
• Evaluation of structural integrity
Lecturers Gerhard Ersdal and John Sharp
14.15 Analysis of ageing structures
• Assessment of ageing structures in
• Fatigue analysis of ageing structures (FLS)
• Strength analysis of ageing structures (ULS and ALS)
Lecturers Gerhard Ersdal and John Sharp
15:00 Coffee
12:50 Methods for strength assessment
• Issues related to more advanced methods for assessing the safety and robustness of ageing structures
• Non-linear analysis methods and probabilistic analysis methods
• Relation to codes and standards
Lecturer Arne Fjeldstad
16.15 Conclusions
• Major issues for a safe life extension of structures
• What improvements and R & D is needed?
16.30 Close of day 1
_______________________________________________________
Program 19 May: Part 2
08.30 Coffee
09.00 Introduction to part 2
• Follow-up of discussions from part 1
Lecturers Gerhard Ersdal and John Sharp
09.30 Introduction to inspection, repair and integrity management of ageing structures
• Structural integrity management
• Inspection and Inspection planning
• Typical structural failure types
• Mitigation and repair (fatigue and corrosion protection)
• Un-inspectable items
• Concrete structures inspection and repair
Lecturers Gerhard Ersdal and John Sharp
10:30 Coffee
10.50 Experience from life extension of jacket structures
• Challenges and experience from life extension of jacket structures
• Strength analysis, probabilistic fatigue analysis and probabilistic inspection planning
Lecturer Arne Fjeldstad
11:50 Lunch
12.50 Experience from life extension of FPSO’s
• Challenges and experience from life extension of FPSO’s
• Strength analysis, fatigue analysis and probabilistic inspection planning
• Typical problem areas and possible mitigations
Lecturer Arne Fjeldstad
14.20 Coffee
14.40 Experience from life extension of semisubmersible structures
• Experience of ageing structures and the effect of the fabrication and modifications quality
• Inspection needs and inspection tools
• Typical results from inspection. Knowledge acquired through examination of more than 1000 fatigue cracks observed in North Sea offshore structures
• Maintenance of inspection data
• Competence requirement for inspection, repair and integrity engineering
Lecturer Ole Tom Vårdal
16.20 Summary and conclusions
• How to manage the integrity of ageing structures
• How to manage non-physical ageing
• Basis for a safe life extension of structures; what improvements and R&D is needed?
Lecturers Arne Fjeldstad, Ole Tom Vårdal, Gerhard Ersdal and John Sharp
16.30 Close of day 2
_________________________________
Praktiske opplysninger
Tid:
Onsdag 18. mai og torsdag 19. mai 2022
Sted:
Felix konferansesenter, Aker brygge, Oslo og med mulighet til å delta digitalt via Teams
Deltakeravgift:
Ved frammøte
kr. 9.900 for medlemmer i NFS og Norsk Stålforbund
kr. 11.900 for ikke-medlemmer
Via Teams
kr. 8.900 for medlemmer i NFS og Norsk Stålforbund
kr. 10.900 for ikke-medlemmer
Kvantumsrabatt 10% ved minimum 3 påmeldte
For søknad om medlemskap, send epost til: post@stalforbund.com
Dokumenter:
Kurskompendium: Kurset inkluderer e-kurskompendium.
Included in the course fee: the book «Ageing and Life extension of offshore structures»
Administrasjon:
Norsk Stålforbund / NFS sekretariat: post@stalforbund.com – tel: 41 02 15 98
Påmeldingsfrist: Fredag 13. mai, kl. 16.00
