30 C.F.R. § 250.445 What are the requirements for kelly valves, inside BOPs, and drill-string safety valves?
Title 30 - Mineral Resources
You must use or provide the following BOP equipment during drilling operations: (a) A kelly valve installed below the swivel (upper kelly valve); (b) A kelly valve installed at the bottom of the kelly (lower kelly valve). You must be able to strip the lower kelly valve through the BOP stack; (c) If you drill with a mud motor and use drill pipe instead of a kelly, you must install one kelly valve above, and one strippable kelly valve below, the joint of drill pipe used in place of a kelly; (d) On a top-drive system equipped with a remote-controlled valve, you must install a strippable kelly-type valve below the remote-controlled valve; (e) An inside BOP in the open position located on the rig floor. You must be able to install an inside BOP for each size connection in the drill string; (f) A drill-string safety valve in the open position located on the rig floor. You must have a drill-string safety valve available for each size connection in the drill string; (g) When running casing, you must have a safety valve in the open position available on the rig floor to fit the casing string being run in the hole; (h) All required manual and remote-controlled kelly valves, drill-string safety valves, and comparable-type valves (i.e. kelly-type valve in a top-drive system) must be essentially full-opening; and (i) The drilling crew must have ready access to a wrench to fit each manual valve. [68 FR 8423, Feb. 20, 2003]
Title 30: Mineral Resources
PART 250—OIL AND GAS AND SULPHUR OPERATIONS IN THE OUTER CONTINENTAL SHELF
Subpart D—Oil and Gas Drilling Operations
Blowout Preventer (BOP) System Requirements
§ 250.445 What are the requirements for kelly valves, inside BOPs, and drill-string safety valves?
