Condition Assessment Techniques for Aged Fixed-Type Offshore Platforms Considering Decommissioning: a Historical Review

• Published in: Journal of marine science and application Vol. 19; no. 4; pp. 584 - 614
• Main Authors: Wahab, Mohamed Mubarak Abdul, Kurian, V. John, Liew, Mohd Shahir, Kim, Do Kyun
• Format: Journal Article
• Language: English
• Published: Harbin Harbin Engineering University 01.12.2020; Springer Nature B.V; Department of Civil and Environmental Engineering, Universiti Teknologi PETRONAS, 32610 Seri Iskandar, Perak, Malaysia%Department of Civil and Environmental Engineering, Universiti Teknologi PETRONAS, 32610 Seri Iskandar, Perak, Malaysia; Graduate Institute of Ferrous Technology, Pohang University of Science and Technology, Pohang 37673, Republic of Korea; Administration Department, Providence College of Engineering, Chengannur 689122, India%Group of Marine Offshore and Subsea Technology, School of Engineering, Newcastle University, Newcastle upon Tyne NE17RU, UK
• Subjects: Decommissioning; Elastic limit; Electrical Machines and Networks; Engineering; Failure mechanisms; Geotechnical Engineering & Applied Earth Sciences; Historical account; Life extension; Machinery and Machine Elements; Offshore; Offshore Engineering; Offshore platforms; Offshore structures; Power Electronics; Review; Technical papers; Work platforms; Strength of offshore platforms; Fixed-type offshore platform; Jacket platform; Fixed structure, oil and gas; Reliability; Offshore structures; oil and gas; Fixed structure
• ISSN: 1671-9433; 1993-5048
• DOI: 10.1007/s11804-020-00181-z

In this study, the technical papers on structural condition assessment of aged fixed-type offshore platforms reported over the past few decades are presented. Other ancillary related works are also discussed. Large numbers of researches are available in the area of requalification for life extension of offshore jacket platforms. Many of these studies involve reassessment of existing platforms by means of conducting pushover analysis, a static nonlinear collapse analysis method to evaluate the structure nonlinear behaviour and capacity beyond the elastic limit. From here, the failure mechanism and inherent reserve strength/capacity of the overall truss structure are determined. This method of doing reassessment is described clearly in the industry-adopted codes and standards such the API, ISO, PTS and NORSOK codes. This may help understand the structural behaviour of aged fixed offshore jacket structures for maintenance or decommissioning.