Definition(s)
Choke and Kill (C&K) Lines
External conduits arranged laterally along the riser pipe and used for circulation of fluids into and out of the well bore to control well pressure.
Source: API RP 16Q, Recommended Practice for Design, Selection, Operation and Maintenance of Marine Drilling Riser Systems, First Edition, November 1993 (Reaffirmed August 2001). Global Standards
Choke and Kill (C&K) Lines
External conduits, arranged parallel to the main tube, used for circulation of fluids to control well pressure. Choke and kill lines are primary pressure-containing members.
Source: API SPEC 16R, Specification for Marine Drilling Riser Couplings, Exploration and Production Department, First Edition, January 1997. Global Standards