Source: International Association of Drilling Contractors – IADC
Headline: Alert 25-3 – Nitrogen Cylinder Rupture
Rig crews had just finalized positioning a rack of nitrogen cylinders/bottles nitrogen to begin the pre-charge process of the accumulator cylinders with nitrogen. One nitrogen cylinder, charged to 2,400psi, in a rack that was not connected to charge the accumulator suffered a rupture to the bottom of the cylinder. This rupture scattered the rack, debris, and the remaining 11 cylinders around the immediate area and port aft area of the rig…