So is this another instance of a fail-safe blowout protector failing again?
A Gulf of Mexico rig crew tried to activate their blowout preventer’s shear rams to cut a pipe and shut off the well before they were forced to flee Tuesday, sources close to the investigation told WWL-TV.
But for reasons that investigators will now try to determine, the device didn’t stem the flow of natural gas that caught fire 15 hours later and melted portions of the cantilevered jack-up rig Wednesday.
Rig crew activated BOP before abandoning blown out well
http://www.wwltv.com/news/local/Grand-Isle-rig-fire-BP-explosion-share-similarities-216846311.html