The risk assessment in the process of transportation, installation and operation is becoming more and more important with the increasing offshore structures accident frequency, the surveys shown that the transportation and installation consists only 5% of the total cost but 80% of the risk. In this paper, the risk assessment for offshore jacket platform in transportation and installation is presented: firstly, the main task profile was identified according to the concrete operation process, the components and risk factors related to the assessment; secondly, the failure models of task profiles are analyzed and coefficient is assigned according to the platform accident database in recent years and the principle of As Low As Reasonably Practicable (ALARP). Finally, the FMEA/FMECA of the transportation process is established based on RELEX Studio 2011, and Fault Tree Analysis (FTA) was proposed to further safety assessment of the implantation process with respect to significant failure models of jacket This paper apply risk assessment in platform transportation, the work in this paper has great significance to the evaluation and future design of platform.

Volume Subject Area:
Structures, Safety and Reliability
Keywords:
FMEA/CA, FTA, jacket platform, risk assessment, failure models
Topics:
Failure, Failure mode and effects analysis, Offshore platform jackets, Risk assessment, Transportation systems
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