Gas from the Statfjord pipeline flowed to the Statfjord Slug Catcher then to the Statfjord Gas Cooler. Gas from the Brent and Statfjord systems was compressed, dehydrated by counter-current contact with glycol. After cooling gas was compressed for export and recovered natural gas liquids (NGL) sent to the oil export line. Ninian Central acted as an oil reception and export hub for a number of installations in the Northern North Sea. Ninian Central receives, or received, oil and gas from the following installations: Ninian Northern (24" oil, 10" gas) Ninian Southern (24" oil, 8" gas) Strathspey (8" gas, 8" gas, 8" oil, 10" oil) Statfjord (8" gas) Heather (16" oil) Magnus (24" oil) Alwyn (12" oil) Lyell (12" and 8" oil) Brent A (16" gas export) Ninian Central was formerly connected to the Western Leg Gas Pipeline. Oil from the field is exported through the 36" Ninian pipeline to Sullom Voe (175 km). Ninian Southern The Ninian Southern installation is steel jacket platform located 3 miles south of Ninian Central. As originally conceived the process plant comprised the following oil and gas facilities. Well fluids were routed to one of two parallel horizontal Free Water Knock Out Vessels, operating at about 6.5 bar and 90 °C, where 3-phase (oil/gas/water) separation took place. Oil from the vessels was cooled and flowed to the Crude Oil Booster Pumps, then through a metering package and to the Main Oil Line Pumps and onward by 24” pipeline to Ninian Central. Produced water from the Free Water Knock Out Vessels was treated to remove oil prior to overboard disposal. Vapour from the vessels was cooled in Gas Coolers and was then compressed in the First Stage Compressor and cooled again. Some of this gas was used in the fuel gas system. The main gas flow was compressed in the Second Stage Compressor and then dehydrated through counter-current contact with glycol in the Glycol Absorber. The dry gas was cooled and chilled in a refrigeration Chiller. Condensed liquids were routed to the LPG metering system and export with the oil stream and dry gas was routed to the fuel gas system and any excess to by 8” pipeline to Ninian Central. Fluids from the subsea Lyell field were routed to the Lyell Slugcatcher and thence to the Lyell Separator. From here oil was pumped to the metering package and co-mingled with the Ninian Southern export oil