176. The authorization holder must ensure that the marine riser used(1) furnishes access to the well;
(2) isolates the well from the body of water;
(3) withstands the differential pressure of the drilling fluid relative to the body of water;
(4) withstands the physical forces to which it will be submitted;
(5) permits the completion fluid to be returned to the installation; and
(6) is supported in a manner that effectively compensates for the forces caused by the motion of the drilling installation.