RogMull

By RogMull

Anchored in Firth of Forth - LPG carrier

It was bitterly cold when I was out this afternoon, therefore not wanting to spend long until I got my Blip. Fortunately I spied this LPG carrier from our front garden.

An LPG carrier is a gas carrier ship designed for transporting liquefied petroleum gas in bulk. I presume it is waiting before moving down the coast to Mossmorran, where it will be loaded up.

Many years ago when the Shell/Esso plant at Mossmorran was being built, I was involved in the training of managers and supervisors before they took up their posts on site. I retain a vague interest in the site, so here is some information:

The Mossmorran natural gas liquids fractionation plant is part of the North Sea Brent oil and gas field system, and is located on the outskirts of Cowdenbeath, Fife.

After the gas is separated from oil on the platforms offshore, the gas is then pumped ashore in the FLAGS and Fulmar pipelines to a terminal at St Fergus operated by AvantiGas. At the St Fergus Gas Plant the methane is separated from the rest of the gas product. The methane is then sent to a neighbouring National Grid plant, leaving the remaining NGL to be piped south via a 223 kilometres pipeline to the Mossmorran site in Fife. At the Mossmorran fractionation plant, natural gas fluid is separated by distillation into ethane (C2H6), propane (C3H8), butane (C4H10) and natural gasoline (C5H12). The ethane is then piped to an adjacent ethylene cracker plant operated by ExxonMobil for further processing and cracking.

The propane and butane is chilled, liquefied and stored on site within double integrity tanks, the gasoline is also stored on site within floating roof tanks. These liquids are then transported via pipeline to the marine terminal at Braefoot Bay on the Firth of Forth for loading onto ships, like the one in this Blip, for export.

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