Firefighters extinguished a blaze which followed an explosion in an oil refinery in the eastern Chinese city of Nanjing on Monday, with no casualties reported, the plant management said.
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The accident happened at around 12:40 pm when the sulfur recovery facility at the refinery of Sinopec Yangzi Petrochemical Co caught fire and exploded.
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The fire ignited three chemical storage tanks, and another of crude oil, which led to an explosion, said Sun Ping, head of the company's information office.
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More than 100 firefighters put out the fire at around 04:20 pm and are now cooling the unexploded tanks, said Sun.
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Environmental examination shows the explosion has so far caused no water contamination, but the air around the plant is still filled with a pungent odor.
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A joint team comprising staff members from the city's firefighting department, the work safety supervision office and the public security bureau was set up to investigate the cause of the accident.Â