Field Experience on the Design and Operation of Mid-Water Arch MWA in South China Sea

This paper reviews the current industry practice for the design of Mid-Water-Arch (MWA) including the guidance from International Standards, requirements from Class, engineering (EPC) installation (OIC) practices. Best industry practice has been developed by MISC Berhad based on the past experiences and leasons learnt , to ensure the continuity of operations and prevent production loss through immediate mitigation actions, efficient repair strategy and minimum requirements for new design. The benefits of establishing of a minimum size of tether chain and the implementation of backup tether interventions are emphasized. The information provided in this paper may provenly useful for Class to amend mooring guidance to account for specific technical requirements for MWA long term requirement.