12:15 - 12:45
Thursday, 19 September 2019
T1.8 TEMA LNG: Innovative LNG Solution
Tema LNG Terminal is developing a marine LNG importing terminal at the existing Tema Port in Ghana for the supply of gas to Ghana National Petroleum Corporation (GNPC). Tema LNG comprises a consortium including Helios Investment backing and Gasfin Developments SA (Gasfin) technical and development knowledge. The LNG terminal is a novel example of two permanently moored vessels, a Floating Regasification Unit (FRU) in combination with a Floating Storage Unit (FSU), in order to form an LNG import terminal to supply gas to Ghana.
The FRU is moored using a novel fixed piled system while the FSU is at a fixed jetty alongside, with the FSU receiving LNG from calling LNG Carriers and transferring it to the FRU via cryogenic hoses. The FRU includes 28,000 cubic metres storage and regasification facilities, which transmit gas via a flexible riser to a subsea pipeline across the harbour entrance, then onwards onshore through a circa 7km gas pipeline to connect to the existing network, primarily for gas supply.
The FRU, FSU and LNGCs at berth will be protected by an 800m extension to the existing port breakwater, to provide a sheltered permanent facility. The FRU is clamped to a six pile system which it can slide up and down on as the vessel draft changes, together with water levels.
The site is situated at the entrance of Tema Port development just beyond the primary breakwater.
The FRU is a specially fitted barge to regasify the liquefied natural gas stored on the FSU and piping the gas to shore via a submarine pipeline for the generation of power and other commercial uses. The barge is a two-tank version with an individual cylindrical tank size of 14,000 cubic meters. Five modular compact regas skids will provide a peak send-out rate of 335 t/h or approximately 2.9 million tons per year at a send-out pressure of 65 bar. The FSU will be an existing 127,000 cubic metres capacity LNG carrier modified to provide the necessary LNG storage for the terminal.
Jiangnan Shipyard China are currently building the Floating Regasification Unit at present, while China Harbour Engineering Company are undertaking the marine EPC contract and onshore contracts have also commenced such as for the pipeline, all to complete in order to commence operations within an 18 month delivery programme.
The paper will focus on the technical challenges and solutions to deliver this innovative small scale LNG project.