§ 250.431. What are the diverter design and installation requirements?
182 words·~1 min read·
/us/cfr/t30/s§ 250.431·A research copy — for the controlling text, always check the official state or federal source. Not legal advice.
You must design and install your diverter system to:
(a)Use diverter spool outlets and diverter lines that have a nominal diameter of at least 10 inches for surface wellhead configurations and at least 12 inches for floating drilling operations;
(b)Use dual diverter lines arranged to provide for downwind diversion capability;
(c)Use at least two diverter control stations. One station must be on the drilling floor. The other station must be in a readily accessible location away from the drilling floor;
(d)Use only remote-controlled valves in the diverter lines. All valves in the diverter system must be full-opening. You may not install manual or butterfly valves in any part of the diverter system;
(e)Minimize the number of turns (only one 90-degree turn allowed for each line for bottom-founded drilling units) in the diverter lines, maximize the radius of curvature of turns, and target all right angles and sharp turns;
(f)Anchor and support the entire diverter system to prevent whipping and vibration; and
(g)Protect all diverter-control instruments and lines from possible damage by thrown or falling objects.