Safety incident provides valuable lessons learned for us to avoid similar situations from recurring. The 2010 BP Macondo incident set high impact in managing asset integrity in minimizing risk exposure. Asset integrity is defined as the ability of an asset to perform its required function effectively and efficiently whilst protecting health, safety and the environment. Asset integrity management is a continuous process throughout the project lifecycle. Few subsea related oil and gas landmark accidents showcased that asset integrity must be maintained at the highest possible standard at all times. Due to the unique nature of subsea and high cost involvement, subsea asset integrity should be given high attention from the beginning of a project’s lifecycle. Based on extensive literature review, critical safety elements such as performance standard, risk evaluation and mitigation, competency safety culture are identified.Existing asset integrity framworks are only focused on asset in operation stage and there is no robust subsea asset integrity framework during project phase. For further study existing asset integrity framework model will be studied to develop suitable asset integrity frame for subsea asset during project phase.
UTM Razak School of Engineering and Advanced Technology, UniversitiTeknologi Malaysia, Kuala Lumpur, Malaysia
Subsea pipeline is a transport medium of oil and gas from offshore to onshore, and offshore to another platform. Subsea pipeline is subjected to extreme internal and external pressures. The differences of internal and external pressures caused by water depth are a critical issue in selection of wall thickness of subsea pipeline to be safe during installation and operation. Current standard practice codes to select the accepted wall thickness are based on tabulation of design factors. In this paper, a Subsea Pro Simulation is applied on selection of the accepted wall thickness of subsea pipeline based on safety zone. In the software, the safety zone is determined based on internal and external loads acting on subsea pipeline. The Subsea Pro Simulation is applied for different water depths such as shallow water (0 m to 400 m), deep water (400 m to 1500 m) and ultra-deep water (more than 1500 m) using data on the Medgaz subsea pipeline project. Results of simulation agree with current operating wall thicknessy.
Department. of Mechanical Engineering, JNTUK-UCEV, Vizianagaram, India
