An investigation by the Bureau of Ocean Energy Management, Regulation and Enforcement (BOEMRE) into the 23 March incident determined that a six-and-3/4-inch diameter, 862-pound chain link in the riser ...
There are different riser configurations: J-tubes on the inside of a platform leg and on the outside and inside a pull tube. The 6-12 in. OD risers are made of heavy-wall pipe with a nominal 12.7 mm ...
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