Abstract: Asset integrity management system (AIMS) outlines the ability of an asset to perform its required functions effectively and ef ciently whilst protecting safety under the integrated system. AIMS is drawing attentions more than ever since the maximum valuation of existing assets is the main stream in E&P industry currently under the volatile oil market and AIMS plays an important role on this. On the other hand deteriorations of aging facilities or deviation from the basis of design are

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... common challenges in brown eld. Such late stage challenges were eminent issues in the production Asset A and in addition to the rigorous inspection and maintenance program a facility life extension work (FLEW) had launched for the extension of the facility life. At the same time an asset integrity & operation assurance (AI&OA) initiative had been built from the corporate standpoint to propagate the AIMS concept to the production assets. In 2017 an AI&OA survey under AI&OA initiative was conducted focusing on FLEW to observe the status and ensure FLEW was in progress under systematic and competent manners in line with the AIMS. AI&OA framework is a cyclic process stating from the risk identi cation. As the result of the survey it was acknowledged FLEW needed to reinforce some items such as the risk assessment, organization structure, project execution plan, monitoring and key performance indicator (KPI) , technical authorization, document control and project review process. Another AI&OA Survey was conducted in 2018 focusing how FLEW program was conveyed adhering to AI&OA framework and addressing the items pointed out during 2017 survey. 2018 survey result had indicated FLEW program was executed in line with AI&OA framework ful lling all of requirements.