Winter, former secretary of the Navy, and professor of engineering practice, University of Michigan, Ann Arbor. Our senior investigative correspondent, Lisa Myersgot a detailed briefing from an independent expert who has studied much of the evidence so far.
These are not bad people, they were just doing dumb things. The nine-year-old one that failed was nearly 57ft tall and weighed about tons.
The study is funded by the U. The safety board also found that the drill pipe bent far earlier in the accident and from a different cause than determined by a presidential oil spill commission. Investigators have long known that the device failed.
The committee issued its preliminary findings in November. By the time the well was capped three months later, an estimated 5 million barrels of oil had gushed into the Gulf. The chair of the committee is Donald C.
Various investigations have found that the cause of the initial explosion involved multiple screw-ups with cement, drilling mud, fluid pressure, botched tests, management problems and poor decisions.
Of particular concern Deepwater horizon what went wrong pdf the apparent lack of a suitable approach for managing the risks, uncertainties, and dangers associated with deepwater drilling, the report says. In the weeks following the explosion, the U. So you saw a lot of cutting corners? His voice still is affected by breathing so much mold.
Massive blowout preventers are anchored to the top of underwater wells. They found faulty wiring in two places, a dead battery and a bent pipe in the hulking device.
His outline lists seven steps to failure, including improper design of the well itself; improper design and execution of cementing the well; missed early warning signs, including major kicks of gas; and the fateful decision to remove heavy drilling fluid called mud from the drill column.
Department of the Interior. He cautioned against broad indictments on the safety of currently operating blowout preventers. The events suggest insufficient checks and balances for considering well safety and for making critical decisions affecting the schedule for "temporarily abandoning" the Macondo exploratory well -- in other words, sealing it for later use.
Winter, chair of the committee, former secretary of the Navy, and professor of engineering practice at the University of Michigan. That failure is also connected to a problem with the blowout preventers, investigators said. There is no doubt that safety was compromised.
They just tested the device as a whole. For its final report, due out this summer, the committee will examine ways to establish practices and standards to foster a culture of safety and methods to ensure that schedule and cost decisions do not compromise safety. A BP spokesman said the company is surprised Bea has reached conclusions based on incomplete information.
Tonight, though, we want to connect the dots a little more closely in this case. With so many investigations going on, BP says it will await all the evidence before further comment on the causes of this terrible accident. Bea helped lead a similar independent investigation after Hurricane Katrina on why the levees collapsed.
The blowout preventer sealed the well temporarily, but then it failed and that caused the massive spill, the new page report found. The blowout preventer that failed and was found to be improperly tested, a federal investigation board concludes.
The disaster provided a terrible demonstration of the risks and complications posed by deepwater drilling operations. Kevin Ewing, a Washington attorney who represents many oil drilling interests, said well operators have improved their techniques.
It cites many questionable decisions about a number of technical and operational breakdowns that occurred prior to the accident.
It turned out there were two sets of faulty wiring that caused problems and a dead battery. The report issued Thursday by the US chemical safety board zeroes in on what went wrong with the blowout preventer and blames bad management and operations. Since the night of the accident, Berkeley engineering professor Bob Bea and his team of experts have been gathering evidence and interviewing those involved, giving many of them confidentiality.
Department of the Interior asked a committee of the National Academy of Engineering and National Research Council to examine the probable causes of the accident and identify measures that could prevent such a catastrophe in the future. However, the committee says that it has been able to develop a good understanding of a number of key factors and decisions that may have contributed to the disaster.
It may not be possible to definitively establish exactly which mechanisms caused the blowout and explosion, says the interim report, given the deaths of potential witnesses, the loss of the oil rig and important records, and the difficulty in obtaining reliable forensic information from the Macondo well.The image above, taken from the forensic examination report on the Deepwater Horizon blowout preventer (pdf), is the heart of what went wrong and what.
Deepwater horizon: what went wrong - Free download as PDF File .pdf), Text File .txt) or read online for free. The BP report into the Deepwater Horizon explosion is out - here are the key findings.
The commission outlines what went wrong on the Deepwater Horizon oil rig, detailing one mistake after another that BP and its contractors made on the rig and onshore.
In one example, rig operators were doing something called a "negative pressure test" to make sure a. the Macondo well. The Deepwater Horizon was abandoned shortly after the fire started, but 11 of persons aboard perished. The vessel sank about 36 hours later and the fire was extinguished.
The riser and drill pipe inside bent at the top of the subsea Blowout Preventer (BOP) and dropped crumpled and broken on the seafloor, spewing gas and oil.
AP Environmental Science Deepwater Horizon Oil Spill: The BP Disaster The Deepwater Horizon oil spill in the Gulf of Mexico was one of the most infamous industrial environmental disasters ever. On April 20,a marine oil-drilling dig called the Deepwater Horizon exploded, releasing hundreds of millions of gallons of oil into the Gulf of Mexico.
Investigation into BP oil spill finds failures, poor testing and ongoing risks board zeroes in on what went wrong with the blowout 11 workers at the Deepwater Horizon drilling rig.Download