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Funnel 'poised over' US oil spill | |
(about 5 hours later) | |
A giant funnel has been positioned above a blown-out oil well in the seabed in the Gulf of Mexico in an attempt to contain oil leaking from it. | |
Underwater robots equipped with cameras have placed the 98-tonne device above the main leak, some 5,000 ft (1,500m) below the surface. | |
It is hoped it will start collecting as much as 85% of the oil and funnelling it to a tanker by Monday. | |
Oil from the massive slick has washed ashore on islands off Louisiana coast. | |
Pelicans and other birds were found covered in oil on the uninhabited Chandeleur Islands - the second oldest national wildlife refuge in the US and home to countless endangered birds. | Pelicans and other birds were found covered in oil on the uninhabited Chandeleur Islands - the second oldest national wildlife refuge in the US and home to countless endangered birds. |
A federal maritime agency said there was "oiling all over" the islands. | A federal maritime agency said there was "oiling all over" the islands. |
Risky operation | Risky operation |
An estimated 800,000 litres (176,000 imperial gallons of oil a day has been leaking unstopped for 18 days from the well, 50 miles (80km) off Louisiana, since an explosion destroyed the Deepwater Horizon rig last month, killing 11 workers. | |
Although the rig was operated by Transocean, it was leased by the British oil giant, BP, which has taken charge of the clean-up process. | Although the rig was operated by Transocean, it was leased by the British oil giant, BP, which has taken charge of the clean-up process. |
It said it hoped the gigantic concrete and steel containment device, once operational, would contain about 85% of the oil leaking out. | It said it hoped the gigantic concrete and steel containment device, once operational, would contain about 85% of the oil leaking out. |
HOW THE OIL FUNNEL WORKS The funnel is a 40ft tall iron box, weighing 98 tonnesIt will be placed over the leak, 5,000ft down on the seabedBP hopes it will collect 85% of the leaking oil and pipe it to the surface | HOW THE OIL FUNNEL WORKS The funnel is a 40ft tall iron box, weighing 98 tonnesIt will be placed over the leak, 5,000ft down on the seabedBP hopes it will collect 85% of the leaking oil and pipe it to the surface |
When the device reaches its destination, the robots will then secure it around the leaking pipe, a process that is expected to take hours. The technology has been used a few times in shallow waters, but never at such extreme depths and under such high pressure. | |
"We are essentially taking a four-story building and lowering it 5,000 feet and setting it on the head of a pin," a BP spokesman, Bill Salvin, told The Associated Press news agency. | |
If the device is not aligned properly while being lowered, it could make the problem worse by damaging the leaking pipe. | |
Other risks include the drill-pipe becoming clogged with ice, and explosions when separating the mix of oil, gas and water on the surface. | Other risks include the drill-pipe becoming clogged with ice, and explosions when separating the mix of oil, gas and water on the surface. |
We haven't done this before. It's very complex, and we can't guarantee it BP spokesman David Nicholas | |
But if the containment device works, a second box now being built will be lowered into the water over a second, smaller leak. | |
These devices will not put an end to the problem on the seafloor. A relief well is still being drilled while BP thinks up other ways to help stop the leak. | |
In the meantime, residents of Louisiana, Mississippi, Alabama, and Florida await news of when the oil will reach their shores. | |
Inflatable booms | Inflatable booms |
On Thursday, the US Coast Guard confirmed for the first time oil had made its way past protective booms and was washing up on land. | On Thursday, the US Coast Guard confirmed for the first time oil had made its way past protective booms and was washing up on land. |
Fears are growing for the safety of the area's manifest wildlife | Fears are growing for the safety of the area's manifest wildlife |
Heavier concentrations of crude remain further offshore, and the Coast Guard said weather forecasts suggested it would stay there until the weekend. | Heavier concentrations of crude remain further offshore, and the Coast Guard said weather forecasts suggested it would stay there until the weekend. |
BP said emergency teams had been sent to Freemason Island, a favourite fishing spot for recreational anglers some 30 miles (50km) off Louisiana's coast, to deploy inflatable booms to protect its prime marshland. | BP said emergency teams had been sent to Freemason Island, a favourite fishing spot for recreational anglers some 30 miles (50km) off Louisiana's coast, to deploy inflatable booms to protect its prime marshland. |
Fears are growing that sea life may have been severely affected in the area, which includes vital spawning grounds for fish, shrimp and crabs. | |
The attempt by BP to lower the funnel comes as Secretary of the Interior Ken Salazar called for a halt to permits for new exploratory drilling in the US, pending a 30-day investigation into the cause of the oil spill. | |
Some environmentalists are now calling for a permanent ban on offshore drilling as a result of the spill. | |
PROJECTED SPREAD OF OIL SPILL ON 7 MAY | PROJECTED SPREAD OF OIL SPILL ON 7 MAY |