Vietnam's sole oil refinery, Dung Quat, Wednesday began a shutdown for maintenance scheduled for two to four weeks, newswire VnExpress reported.
Nguyen Hoai Giang, chief executive of the Binh Son Refining and Petrochemical Co, which operates the refinery in the central province of Quang Ngai, said during the maintenance several technical problems would be fixed.
Last July the refinery was shut down for two months for its first maintenance, which cost US$40 million and saw 75 technical defects fixed.
Built by the state-owned oil and gas group PetroVietnam at a cost of over $3 billion, Dung Quat went into operation in 2009. It produces 6.5 million tons a year, meeting 30 percent of the country's requirements.
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