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Ras Tanura is the oldest refinery on the Persian Gulf coast, located near the industrial port city Jubail in Saudi Arabia. It has a crude distillation capacity of 550,000 barrels per day (bpd). It is owned and operated by the state-owned oil company, Saudi Aramco. The majority of the products produced by the refinery are supplied to Dhahran bulk plant for domestic use, and the remaining are exported. The refinery began operations in September 1945 with an initial production capacity of over 60,000bpd. It has since then undergone a number of expansions, which added new equipment such as fluid hydroformer for high-octane gasoline production (commissioned in 1955), a diesel desulphurisation unit (commissioned in 1957), a special products blending facility, and a refrigerated liquefied petroleum gas (LPG) plant. Past expansions at the Ras Tanura refinery "The refinery was upgraded by adding a diglycol amine (DGA) regeneration plant and sour water stripper in 1999." The major facilities at the refinery complex include a 325,000bpd crude distillation unit, a 225,000bpd gas condensate distillation unit and 50,000bpd hydrocracker. In addition it has 270,000bpd catalytic reforming equipment. It also includes a visbreaker and a natural gas liquids (NGL) industrial unit. The NGL fractionation plant was added with a capacity of 130,000bpd in 1978. A modernisation project was completed at the refinery in 1984. The refinery was also upgraded by adding diglycol amine (DGA) regeneration plant and sour water stripper in 1999. Clean technology improvements and aromatics plant at the Ras Tanura refinery Saudi Aramco launched a $2.6bn project, named the Ras Tanura Refinery Clean Fuels and Aromatics Project, to improve the environmental friendliness of the plant. The company announced its plans to invite tenders for clean fuels and aromatics project at the refinery in April 2013. The scope of works under the project will include carrying out front end engineering design (FEED) services for the inside and outside battery limits, and carrying out modifications to the refinery in line with environmental regulations. "Saudi Aramco launched a $2.6bn project, named the Ras Tanura Refinery Clean Fuels and Aromatics Project, to improve the environmental friendliness of the plant." The project also will include adding an aromatics cracker at the refinery. The contracts for the project are expected to be awarded in November 2013. The construction is expected to last up to 42 months. The full mechanical completion of the project is expected by May 2017. The main contractors preparing to bid for the expansion of the aromatics cracking at the refinery include Chiyoda and JGC Corporation from Japan, Daelim Industrial, Hyundai Engineering & Construction, and GS Engineering and Construction from South Korea, Petrofac from the UK, Saipem from Italy, Technip from France and Tecnicas Reunidas from Spain. Details of other latest expansions at the Ras Tanura refinery The Ras Tanura refinery underwent a major expansion worth $8bn between 2007 and 2012. The expansion included addition of a crude distillation unit with a capacity of 400 million barrels of oil per day (mbod), a vacuum distillation unit with 120mbod, a continuous catalyst regenerator with a capacity of 100mobd, and a 120mbod visbreaker crude unit. The expansion also added other units to the refinery, such as a 90mbod diesel hydrotreater, an 820gpm amine regeneration unit, a 200tpd sulphur recovery unit, and a sour water stripper with a capacity of 225gpm. In addition, the project included addition of related utilities, controls, interconnections to the existing facilities, flares, and tankage at the refinery. Contractors involved with the Ras Tanura refinery expansion projects Jacobs Engineering Group was awarded with a contact to provide FEED services for both inside and outside battery limits in August 2011. The scope of the contract also included providing modifications to the refinery in order to comply with the environmental regulations in future. WorleyParsons was awarded with a contract to provide project management and FEED services for the expansion of the refinery between 2007 and 2012. The scope of the contract included providing detailed design support, detailed design package preparation and construction management services for the refinery expansion. SNC-Lavalin has been awarded an engineering, procurement and construction (EPC) contract by Saudi Aramco for the expansion of asphalt production facilities at its Ras Tanura Refinery Tecnicas Reunidas won Aramco Ras Tanura clean fuels contract