The Xingang Port oil spill is a spill that occurred in July 2010 caused by a rupture and subsequent explosion of two crude oil pipelines that run to an oil storage depot of the China National Petroleum Corporation in Xingang Harbour, Dalian, Liaoning Province, China. The 1,500 tonnes of oil spilled from the pipes created an 180 km² (69 sq mi) slick in the Yellow Sea that grew to 430 km² (170 sq mi) within a week.