This recommended practice (RP) addresses coiled tubing well control equipment assembly and operation as it relates to well control practices. Industry practices for performing well control operations using fluids for hydrostatic pressure balance are not addressed in this RP. This document covers well control equipment assembly and operation used in coiled tubing intervention and coiled tubing drilling applications performed through: - christmas trees constructed in accordance with API 6A and/or API 11IW, - a surface flow head or surface test tree constructed in accordance with API 6A, - drill pipe or workstrings with connections manufactured in accordance with API 7 and/or API 5CT. Operations Not Covered in this Document The following operations are not covered in the scope of this document: coiled tubing well intervention operations without the christmas tree (or surface test tree) in place, coiled tubing drilling operations without the christmas tree (or surface test tree) in place, capillary tubing (tubing less than 3/4 in. OD) well service operations, coiled tubing intervention operations within pipelines and flowlines, reverse circulation operations.