WASHINGTON (AP) - Two congressmen say that BP's internal
investigation into the oil spill in the Gulf of Mexico has
identified new warning signs of problems before the April 20
explosion that brought down the company's oil rig.
Reps. Henry Waxman and Bart Stupak say in a committee memo that
the warning signs include an unexpected loss of fluid from a pipe
known as a "riser" five hours before the explosion. That suggests
there could have been a leak in the blowout preventer.
Engineers conducting tests on the system reduced the pressure to
one of the lines to zero, while the pressure on the drill began to
build. The memo says BP's investigator indicates that may have been
a "fundamental mistake" because the rising pressure was an
"indicator of a very large abnormality."
(Copyright 2010 by The Associated Press. All Rights Reserved.)