Holford Underground Gas Storage - from FEED to handover - Axc.Nl

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Pipeline Liquids Management• Hydraulic simulations (Olga) forecast a potential 150m 3 liquidsdisplaced on start up.• With intermittent operation and potential variation in cavernoperating temperatures and gas moisture content, could a largeexpensive slug catcher be justified?• Inlet Separator liquid capacityincreased• Slug Catcher deleted• Liquid drainage rate increased• Large low pressure ProducedWater Tank• Ramp Rate limited at low flowCostain Energy & Processwww.costain.com
Commissioning• Water is present during construction.Must be removed to meet the NTS specification on thedry side of the plant (-10 0 C)sideCostain Energy & ProcessMust be removed to prevent hydrates on the cavern•More attention needed during the design with identification oflow points, especially where there is extensive undergroundpiping• Noise• FAT• Pipework• Check Valves• Compressor TestConditions• Acoustic Enclosure Testwww.costain.com
Page 1 and 2: Holford Underground Gas Storage -fr
Page 3 and 4: The Project• Storage Volume• Pe
Page 5 and 6: Project TimelineCostain Energy & Pr
Page 7 and 8: The National Gas Network• Located
Page 9 and 10: Operational AdvantagesProcess Consi
Page 11 and 12: Gas DryingGlycol was chosen as the
Page 13 and 14: Base Control SystemControl System
Page 15: Vent Design• Visual impact limits
Page 19 and 20: Environment• The plant is located
Page 21 and 22: Team Working• Costain experience
Page 23: Holford Underground Gas Storage -fr

Holford Underground Gas Storage - from FEED to handover - Axc.Nl

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