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Corexit products have been used in oil spill response activities since the late 1960s. [14] Early products in the line included Corexit 7664 [4] and Corexit 8666. Corexit 9527 is one of the first modern concentrate dispersants and has been in use since the mid 1970s. Corexit 9500 was designed to replace Corexit 9527.
Although most studies relating to Corexit focus mainly on its effectiveness as a dispersant, public pressure to evaluate its safety towards humans after the oil spill and response clean up brought about several studies about the health effects of Corexit, both alone and in conjunction with spilled oil. [22]
May 23 – BP rebuffs EPA order to change its dispersants. BP says that if oil reaches the shore, it would do more environmental harm than if it were dispersed off the coast. It notes that Corexit is the only product that is available in sufficient quantities to deal with the spill. [69] [70]
The workers' experts relied on studies, such as those from the National Institutes of Health, that found people exposed to oil and Corexit were more likely to develop certain illnesses.
Sign protesting use of toxic Corexit chemical dispersant in the Deepwater Horizon oil spill, at the Bastille Day Tumble, French Quarter, New Orleans Environmental scientists say the dispersants, which can cause genetic mutations and cancer, add to the toxicity of a spill, and expose sea turtles and bluefin tuna to an even greater risk than ...
A C-130 Hercules sprays Corexit dispersant onto the Gulf of Mexico In addition to use of dispersants by boats and planes, the Deepwater Horizon spill was the first to use subsea dispersant injection. The spill was also notable for the volume of Corexit oil dispersant used and for application methods that were "purely experimental."
It notes that corexit is the only product that is available in sufficient quantities to deal with the spill. Further BP which has now deployed a third of the world's dispersant supply against the spill [ 39 ] said suggesting alternatives (or even detailing the chemicals that make up corexit) would expose confidential business information which ...
The slick was described in the official report as "a moderate sheen with streaks of heavy dark oil moving round the stern of the vessel." Tug boats were driven through the slick in an attempt to break it up, and the spraying of chemical dispersant commenced soon after the spill occurred. 400 litres of Corexit 7764 and 4200 litres of Corexit 9527 were supplied by Santos.