From Platts Oilgram News article by Gary Gentile:
The team examining the BOP in Louisiana conducted tests in January and February of this year that showed that with the proper amount of hydraulic fluid pressure, the rams on the BOP would close, according to Dan Tillema, an investigator with the US Chemical Safety Board.
Portions of drill pipe were found in the BOP and the pipe was cut, Tillema said—a sign that the rams did close at some point during the incident.
But Tillema cautions against making any assumptions based on the test results sofar. Some reports have suggested that rubber gaskets around the rams were worn awayby the massive flow of oil and gas gushing from the Macondo well, overcoming the BOP’s capacity. That is just one of several possibilities, Tillema said. “We haven’t made any conclusions yet,” he said.
Hopefully the conclusions and possible tech. upgrade needed will come soon , there are 60 new 18 3/4 x 15 K BOP’s on order to be delivered until 2013 for new built. Further is the existing concerns to current BOP’s used at present in as much as 6500 ft water depth.
Good point JL. It would be interesting to hear from the BOP manufacturers.