Yellow River oil spill
Encyclopedia
The Yellow River oil spill was an oil spill
Oil spill
An oil spill is the release of a liquid petroleum hydrocarbon into the environment, especially marine areas, due to human activity, and is a form of pollution. The term is mostly used to describe marine oil spills, where oil is released into the ocean or coastal waters...

 in the Yellow River
Yellow River
The Yellow River or Huang He, formerly known as the Hwang Ho, is the second-longest river in China and the sixth-longest in the world at the estimated length of . Originating in the Bayan Har Mountains in Qinghai Province in western China, it flows through nine provinces of China and empties into...

 in Shaanxi
Shaanxi
' is a province in the central part of Mainland China, and it includes portions of the Loess Plateau on the middle reaches of the Yellow River in addition to the Qinling Mountains across the southern part of this province...

, China
China
Chinese civilization may refer to:* China for more general discussion of the country.* Chinese culture* Greater China, the transnational community of ethnic Chinese.* History of China* Sinosphere, the area historically affected by Chinese culture...

 which took place due to the rupturing of a segment of Lanzhou-Zhengzhou oil pipeline on December 30, 2009. Approximately 150000 l (39,625.8 US gal) of diesel oil flowed down the Wei River
Wei River
The Wei River is a major river in west-central China's Gansu and Shaanxi provinces. It is the largest tributary of the Yellow River and very important in the early development of Chinese civilization....

 before finally reaching the Yellow River, the source of drinking water for millions of people, on January 4, 2010.

Background

The Lanzhou-Zhengzhou oil pipeline project was approved in 2007 and opened for operation in March 2009. It is a part of the 2070 km (1,286.2 mi)-long Lanzhou-Zhengzhou-Changsha pipeline with a capacity of transporting 15 million tons of oil per year. According to China National Petroleum Corporation
China National Petroleum Corporation
China National Petroleum Corporation is a state-owned fuel-producing corporation and the largest integrated oil and gas company in the People's Republic of China...

 (CNPC), the rupture took place on December 30, 2009 due to an accident near Weinan
Weinan
Weinan is a Municipality in the province of Shaanxi, PRC. The Grand Historian Sima Qian was born in Weinan.-Administration:...

 where construction was underway by third-party workers. However, the incident was not publicized until January 3, 2010. The deputy director of the Yellow River Water Resources Commission called for an investigation into the accident, refuting CNPC's claim that the accident was caused by third-party construction workers.

Spill control efforts

About 150,000 litres of diesel had already leaked out before the pipeline was closed by CNPC. According to Pacific Environment
Pacific Environment
Pacific Environment is an environmental organization based in San Francisco, California, USA founded in 1987. Its objective is to protect the living environment of the Pacific Rim.-Mission statement:...

 China's co-director Wen Bo, 700 workers were quickly mobilized by the government to control the spill as soon as its occurrence became known. They dug diversion channels and built floating dams to stop the pollutant from advancing further downstream. Solidifying chemicals were also used to remove the fuel from the stream. Despite these efforts, officials found traces of diesel in the Yellow River on January 4, 2010, 200 km upstream of Zhengzhou
Zhengzhou
Zhengzhou , is the capital and largest city of Henan province in north-central China. A prefecture-level city, it also serves as the political, economic, technological, and educational centre of the province, as well as a major transportation hub for Central China...

. No pollution was detected downstream of Sanmenxia
Sanmenxia
-Administration:The prefecture-level city of Sanmenxia administers one district, two county-level cities and three counties.*Hubin District*Lingbao City*Yima City*Lushi County*Shan County*Mianchi County*Sanmenxia Development Zone...

, although the Sanmenxia reservoir was found to contain traces of toxic diesel. Sanmenxia Dam
Sanmenxia Dam
The Sanmenxia Dam is a concrete gravity dam on the middle-reaches of the Yellow River near Sanmenxia on the border Shanxi and Henan Province, China. The dam is multi-purpose and was constructed for flood and ice control along with irrigation, hydroelectric power production and navigation....

 and its six hydroelectric generators were shut down to prevent the flow of pollutant further downstream. On 5 January, Zhang Xun, an official of the Ministry of Environmental Protection confirmed that the spill had been contained in the Sanmenxia reservoir and was no longer a threat to the river water downstream.
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